Super capacitor voltage detection and sectional type discharge device

Abstract

The utility model discloses a super capacitor voltage detection and sectional type discharging device which comprises a PVC box body, a panel is fixedly connected in the PVC box body, a display screen is installed at the bottom of the panel, a switch button is arranged on the panel and located below the display screen, and a charging interface is arranged on one side, located on the display screen, of the panel. The utility model relates to the technical field of super capacitor monitoring equipment, and solves the problems that in the prior art, a super capacitor lacks an effective detection means, the problem that the capacity of the super capacitor is insufficient cannot be found in time, and the super capacitor cannot be replaced in time before the capacity is reduced to a safety threshold, so that a potential risk source of operation of a wind turbine generator is caused. And the safe and stable operation of the wind power plant is seriously threatened.

Description

Technical Field

[0001] This utility model relates to the technical field of supercapacitor monitoring equipment, specifically a supercapacitor voltage detection and segmented discharge device. Background Technology

[0002] As a key energy storage component of the wind turbine pitch system, the supercapacitor provides power to adjust the blade angle to cope with different wind speeds and ensure the safe and stable operation of the wind turbine. If the performance of the supercapacitor deteriorates or fails, the pitch system will not be able to work properly, and the blade angle will be difficult to adjust according to changes in wind speed. Under the continuous impact of strong winds, the stress on the blades will far exceed the design limit, and the blades are prone to breakage. With the increase of service time and the influence of the operating environment, the capacity of the supercapacitor will gradually decrease. When the capacity decreases to a certain level, although it will not cause obvious failure of the wind turbine in the short term, it will slow down the response speed of the pitch system, reduce the adjustment accuracy, and increase the probability of wind turbine failure under extreme weather conditions.

[0003] In the existing technology, due to the lack of effective detection methods for supercapacitors, it is impossible to detect the problem of insufficient supercapacitor capacity in time, and it is impossible to replace them in time before the capacity drops to the safe threshold. This leads to potential risk sources for the operation of wind turbine units, which seriously threatens the safe and stable operation of wind farms. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a supercapacitor voltage detection and segmented discharge device. This solves the problem that, due to the lack of effective detection methods for supercapacitors, insufficient supercapacitor capacity cannot be detected in time, and timely replacement cannot be carried out before the capacity drops to a safe threshold. This leads to potential risks to the operation of wind turbine units and seriously threatens the safe and stable operation of wind farms.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a supercapacitor voltage detection and segmented discharge device, comprising a PVC housing, a panel fixedly connected inside the PVC housing, a display screen mounted at the bottom of the panel, a switch button located below the display screen, a charging interface located on one side of the panel near the display screen, and supercapacitor detection wiring ports equidistantly arranged on the side of the panel away from the charging interface. A voltage and current acquisition module is installed inside the PVC housing, a switching contactor is located on one side of the inner wall of the PVC housing, a discharge resistor module is installed inside the PVC housing, and a lithium battery pack is installed on the side of the PVC housing away from the switching contactor. A PLC controller is installed inside the PVC housing. The display screen, switch button, charging interface, supercapacitor detection wiring ports, voltage and current acquisition module, switching contactor, discharge resistor module, and lithium battery pack are all electrically connected to the PLC controller.

[0006] Preferably, temperature sensors are equidistantly arranged inside the PVC enclosure, heat dissipation holes are equidistantly opened on both sides of the panel, a fan is installed on the panel at the bottom of the heat dissipation holes, the temperature sensors and the fan are electrically connected to the PLC controller, and a sound-generating device is installed on the inner wall of the PVC enclosure below one of the heat dissipation holes, the sound-generating device is electrically connected to the PLC controller.

[0007] Preferably, a PVC box cover is rotatably connected to the top of the PVC box body, a limiting edge is provided on the top of the outer wall of the PVC box body, the PVC box cover is connected to the limiting edge, fixing buckles are provided on both sides of the front of the PVC box body, and a snap-fit ​​is provided on both sides of the top of the PVC box cover, the fixing buckles are connected to the snap-fit.

[0008] Preferably, the front of the PVC box is rotatably connected to a handle, and the outer wall of the handle is provided with a grip rubber sleeve.

[0009] Preferably, the outer wall of the PVC box is provided with reinforcing strips at equal intervals at the bottom of the limiting edge.

[0010] This invention provides a supercapacitor voltage detection and segmented discharge device. It offers the following advantages: Through the cooperation of a PVC enclosure, panel, display screen, switch button, charging interface, supercapacitor detection wiring port, voltage and current acquisition module, switching contactor, discharge resistor module, lithium battery pack, and PLC controller, this device achieves high-precision real-time monitoring of the supercapacitor's voltage and current. It promptly and accurately captures changes in the supercapacitor's state. Throughout the detection and discharge process, the PLC controller continuously and dynamically adjusts the state of the switching contactor based on a preset advanced control algorithm, ensuring that the discharge current remains stable between 0.5 and 1.5 times the supercapacitor's rated current. This improves the overall efficiency and safety of the discharge process. It can accurately detect supercapacitor performance, promptly identify insufficient capacity, and perform highly safe detection and discharge operations, thus ensuring the urgent need for safe wind farm operation and reducing economic losses. This helps improve the reliability of wind turbine units, extend equipment lifespan, increase power generation efficiency, and protect the lives of personnel.

[0011] Through the coordinated operation of the PVC enclosure, panel, PLC controller, heat dissipation holes, fan, sound-emitting device, and temperature sensor, and by installing high-precision temperature sensors in key internal components, the PLC controller quickly takes measures to reduce the discharge current or suspend discharge when the detected temperature exceeds the set safety threshold of 60°C. Simultaneously, it activates cooling measures such as the cooling fan, effectively preventing equipment failure and safety hazards caused by overheating, thus ensuring the stable operation of the device. Furthermore, the internal sound-emitting device emits alarm sounds of different frequencies and rhythms for different types of abnormalities, allowing staff to handle them promptly and quickly distinguish fault types. This makes the entire detection and discharge process more intelligent and automated, improving the stability and ease of operation of the detection device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0014] Figure 3 for Figure 1 A magnified view of a portion of region A in the middle;

[0015] Figure 4 This is a partial circuit diagram of the present invention;

[0016] Figure 5 This is another part of the circuit diagram of this utility model.

[0017] In the diagram: 1. PVC enclosure; 2. Panel; 3. Display screen; 4. Switch button; 5. Charging interface; 6. Supercapacitor detection wiring port; 7. Voltage and current acquisition module; 8. Switching contactor; 9. Discharge resistor module; 10. Lithium battery pack; 11. PLC controller; 12. Heat dissipation holes; 13. Fan; 14. Sound generating device; 15. PVC enclosure cover; 16. Limiting edge; 17. Fixing buckle; 18. Bayonet; 19. Handle; 20. Grip rubber sleeve; 21. Reinforcing strip; 22. Temperature sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the existing technology, due to the lack of effective detection methods for supercapacitors, it is impossible to detect the problem of insufficient supercapacitor capacity in time, and it is impossible to replace them in time before the capacity drops to the safe threshold. This leads to potential risk sources for the operation of wind turbine units, which seriously threatens the safe and stable operation of wind farms.

[0020] In view of this, this utility model provides a supercapacitor voltage detection and segmented discharge device. Through the cooperation of a PVC housing, panel, display screen, switch button, charging interface, supercapacitor detection wiring port, voltage and current acquisition module, switching contactor, discharge resistor module, lithium battery pack, and PLC controller, it can monitor the real-time voltage and current of the supercapacitor with high precision, and capture changes in the supercapacitor's state in a timely and accurate manner. Throughout the detection and discharge process, the PLC controller continuously and dynamically adjusts the state of the switching contactor according to a preset advanced control algorithm to ensure that the discharge current remains stable between 0.5 and 1.5 times the rated current of the supercapacitor, thereby improving the overall efficiency and safety of the discharge process. It can accurately detect the performance of the supercapacitor, promptly identify insufficient capacity problems, and perform highly safe detection and discharge operations. This is of paramount importance for ensuring the safe operation of wind farms, reducing economic losses, improving the reliability of wind turbine units, extending equipment lifespan, increasing power generation efficiency, and protecting the lives of personnel.

[0021] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0022] Depend on Figure 1-5 It is known that a supercapacitor voltage detection and segmented discharge device includes a PVC housing 1. The PVC housing 1 is made of PVC material, which has excellent insulation performance, effectively ensuring the electrical safety of the device during detection and discharge. At the same time, it has good heat dissipation capacity, which can ensure the stable operation of internal components and provide a good physical environment for the long-term reliable operation of the device. A panel 2 is fixedly connected inside the PVC housing 1. A display screen 3 is installed at the bottom of the panel 2. A real-time communication link is established between the display screen 3 and the PLC controller 11, which transmits various key data (such as voltage, current, discharge status, etc.) during the detection and discharge process to the touch screen for intuitive display. At the same time, it receives user commands from the touch screen (such as threshold setting, start / stop discharge, etc.) and responds quickly, realizing efficient human-machine interaction and providing operators with a convenient and intuitive operating experience. A switch button 4 is set below the display screen 3 on the panel 2. A charging interface 5 is set on one side of the panel 2 on the display screen 3. Supercapacitor detection wiring ports 6 are equidistantly arranged on the side of the panel 2 away from the charging interface 5. The device is equipped with a voltage and current acquisition module 7. A switching contactor 8 is installed on one side of the inner wall of the PVC box 1. A discharge resistor module 9 is installed inside the PVC box 1. The discharge resistor module 9 uses a combination of 3 sets of discharge resistors to enable it to perform optimally at different discharge stages. Among them, the series resistor effectively limits the current at high voltage stages, providing reliable protection for the equipment; the parallel resistor accelerates the discharge at low voltage stages, significantly improving the overall discharge efficiency. This greatly improves the adaptability of the device to supercapacitors of different voltage levels, broadens the application range of the device, and enables it to work stably and efficiently under various complex working conditions. A lithium battery pack 10 is installed on the side of the PVC box 1 away from the switching contactor 8. A PLC controller 11 is installed inside the PVC box 1. The PLC controller 11 serves as the control center of the device, comprehensively coordinating the work of each part and ensuring the orderly progress of the entire detection and discharge process. The display screen 3, switch button 4, charging interface 5, supercapacitor detection wiring port 6, voltage and current acquisition module 7, switching contactor 8, discharge resistor module 9, and lithium battery pack 10 are all electrically connected to the PLC controller 11.

[0023] In the specific implementation process, it is worth noting that the PVC enclosure 1 is made of PVC material, which has excellent insulation properties, effectively ensuring the electrical safety of the device during detection and discharge. At the same time, it has good heat dissipation capabilities, ensuring stable operation of internal components and providing a good physical environment for long-term reliable operation of the device. A real-time communication link is established between the display screen 3 and the PLC controller 11, transmitting various key data (such as voltage, current, discharge status, etc.) during the detection and discharge process to the touch screen for intuitive display. Simultaneously, it receives user commands from the touch screen (such as threshold setting, start / stop discharge, etc.) and responds quickly, achieving efficient human-machine interaction and providing operators with convenient and direct... For a superior user experience, switch button 4 is used to power on / off the detection device. PLC controller 11 acts as the control center, coordinating all parts to ensure the orderly execution of the entire detection and discharge process. Discharge resistor module 9 uses a combination of three discharge resistors to achieve optimal performance at different discharge stages. The series resistor effectively limits current at high voltage, providing reliable protection for the equipment; the parallel resistor accelerates discharge at low voltage, significantly improving overall discharge efficiency. This greatly enhances the device's adaptability to supercapacitors of different voltage levels, broadening its application range and enabling stable and efficient operation under various complex conditions. The device is controlled via PVC enclosure 1, panel 2, supercapacitor detection wiring port 6, and voltage / current detection. The cooperation between the acquisition module 7, the switching contactor 8, the discharge resistor module 9, and the PLC controller 11 enables real-time and precise monitoring of the voltage and current signals of the supercapacitor by inserting the supercapacitor detection line into the supercapacitor detection terminal 6. These signals are then transmitted to the PLC controller 11, achieving real-time detection of the supercapacitor's voltage and current. Furthermore, the switching contactor 8 precisely controls the connection and disconnection of the discharge resistor according to instructions from the PLC controller 11, enabling flexible control of the discharge process. The cooperation between the PVC housing 1, the panel 2, the charging interface 5, the lithium battery pack 10, and the PLC controller 11, along with the rechargeable lithium battery pack 10, provides power to the detection device, ensuring... To ensure the stable operation of the entire device, the PVC housing 1, panel 2, display screen 3, switch button 4, charging interface 5, supercapacitor detection wiring port 6, voltage and current acquisition module 7, switching contactor 8, discharge resistor module 9, lithium battery pack 10, and PLC controller 11 work together to monitor the real-time voltage and current of the supercapacitor with high precision, timely and accurately capturing changes in the supercapacitor's state. Throughout the detection and discharge process, the PLC controller 11 continuously and dynamically adjusts the state of the switching contactor 8 according to a preset advanced control algorithm, ensuring that the discharge current remains stable between 0.5 and 1.5 times the rated current of the supercapacitor. When the discharge current exceeds 1.2 times the rated voltage of the supercapacitor or 1.5 times the rated current, the system will stop operation.When the current reaches 5 times the rated current, the PLC controller 11 immediately triggers the overcurrent protection action, instantly cutting off the discharge circuit to prevent excessively long discharge time due to insufficient current, which would affect working efficiency. It also effectively prevents damage to the supercapacitor and other equipment due to excessive current, extending the supercapacitor's lifespan and improving the overall efficiency and safety of the discharge process. It can accurately detect supercapacitor performance, promptly identify insufficient capacity issues, and perform highly safe detection and discharge operations. This is crucial for ensuring the safe operation of wind farms, reducing economic losses, improving the reliability of wind turbine units, extending equipment lifespan, increasing power generation efficiency, and protecting the lives of personnel. The specific models of the display screen 3, switch button 4, charging interface 5, supercapacitor detection wiring port 6, voltage and current acquisition module 7, switching contactor 8, discharge resistor module 9, lithium battery pack 10, and PLC controller 11 are not limited; any model that meets the usage requirements is acceptable.

[0024] Furthermore, temperature sensors 22 are equidistantly arranged inside the PVC housing 1, and heat dissipation holes 12 are equidistantly opened on both sides of the panel 2. A fan 13 is installed at the bottom of the heat dissipation hole 12 on the panel 2. The temperature sensors 22 and the fan 13 are electrically connected to the PLC controller 11. A sound-generating device 14 is installed on the inner wall of the PVC housing 1 below a heat dissipation hole 12. The sound-generating device 14 is electrically connected to the PLC controller 11.

[0025] In the specific implementation process, it is worth noting that through the cooperation between the PVC box 1, panel 2, PLC controller 11, heat dissipation holes 12, fan 13, and temperature sensor 22, and by installing high-precision temperature sensors 22 in key parts inside the device, when the detected temperature exceeds the set safety threshold of 60℃, the PLC controller 11 quickly takes measures to reduce the discharge current or suspend the discharge, and simultaneously activates cooling measures such as the cooling fan 13. Discharge resumes only after the temperature drops to the normal range, effectively preventing equipment failure and safety hazards caused by overheating, and ensuring the stable operation of the device. Through the cooperation between the PLC controller 11 and the sound-emitting device 14, at the start of the test, the sound-emitting device 14 emits a short "beep" sound to inform the staff that the test has started; during the test, it emits a rhythmic "beep" sound at regular intervals to let the staff know the progress of the test; at the end of the test, it emits a long "beep" sound to indicate that the test is complete. Furthermore, when the voltage or current of the supercapacitor exceeds the preset threshold, or when the waveform is abnormal, the sound-emitting device 14 emits a sharp, continuous alarm sound to remind the staff that there is a problem with the supercapacitor, so that the staff can handle it in time. At the same time, different... Different alarm sounds with varying frequencies and rhythms can be set for different types of abnormal situations, allowing staff to quickly distinguish the fault type. If insufficient supercapacitor capacity is detected, a specific frequency alarm sound will be emitted to highlight the need for capacitor replacement. Through the cooperation between the PVC housing 1, panel 2, PLC controller 11, heat dissipation holes 12, fan 13, sound-emitting device 14, and temperature sensor 22, and by installing high-precision temperature sensor 22 in key parts inside the device, when the detected temperature exceeds the set safety threshold of 60℃, the PLC controller 11 quickly takes measures to reduce the discharge current or suspend the discharge, and simultaneously activates cooling measures such as the cooling fan 13, effectively preventing equipment failure and safety hazards caused by overheating, ensuring the stable operation of the device. Furthermore, by setting the sound-emitting device 14 inside the device, different alarm sounds with varying frequencies and rhythms can be emitted for different types of abnormal situations, allowing staff to handle them in a timely manner. At the same time, it facilitates staff to quickly distinguish the fault type, making the entire detection and discharge process more intelligent and automated, improving the stability and ease of operation of the detection device. The specific models of fan 13, sound-emitting device 14, and temperature sensor 22 are not limited, as long as they meet the usage requirements.

[0026] Furthermore, a PVC box cover 15 is rotatably connected to the top of the PVC box body 1, a limit edge 16 is provided on the top of the outer wall of the PVC box body 1, the PVC box cover 15 is connected to the limit edge 16, a fixing buckle 17 is provided on both sides of the front of the PVC box body 1, and a bayonet 18 is provided on both sides of the top of the PVC box cover 15, the fixing buckle 17 is connected to the bayonet 18.

[0027] In the specific implementation process, it is worth noting that, through the cooperation between the PVC box body 1, PVC box cover 15, limiting edge 16, fixing buckle 17 and bayonet 18, the box body of the detection device adopts an openable design. By fastening the fixing buckle 17 to the bayonet 18, the PVC box cover 15 can be firmly covered on the PVC box body 1, preventing accidental opening during transportation or storage, and ensuring the safety and stability of the internal components. At the same time, the cooperation between the limiting edge 16 and the PVC box cover 15 further enhances the sealing and stability of the box body, effectively preventing external factors such as dust and moisture from corroding the internal components, improving the safety of the device, and extending the service life of the device.

[0028] Furthermore, a handle 19 is rotatably connected to the front of the PVC box 1, and a grip rubber sleeve 20 is provided on the outer wall of the handle 19.

[0029] In the specific implementation process, it is worth noting that, through the cooperation between the PVC box 1, the handle 19 and the grip rubber sleeve 20, a rotating handle 19 is designed on one side of the front of the PVC box 1, and a soft grip rubber sleeve 20 is provided. This not only makes it easier for staff to move and carry the testing device, but also provides a comfortable grip, reduces fatigue caused by holding the device for a long time, and improves the convenience and comfort of operation.

[0030] Furthermore, the outer wall of the PVC box 1 is provided with reinforcing strips 21 at equal intervals at the bottom of the limiting edge 16;

[0031] In the specific implementation process, it is worth noting that the reinforcing strip 21 is used to improve the structural strength of the PVC box 1, prevent the box from being deformed or damaged due to external impact during transportation or use, further ensure the safety and stability of the internal components, improve the overall durability of the device, and ensure the smooth progress of the detection and discharge process.

[0032] Working principle:

[0033] S1. Data Acquisition and Monitoring: The PLC controller continuously receives signals from the voltage and current acquisition module every 10 milliseconds to perform high-precision monitoring of the real-time voltage and current of the supercapacitor, providing a data basis for subsequent control operations;

[0034] S2. Discharge Threshold Judgment and Switching: Operators can set the discharge voltage threshold within the range of 0-100V via a 10-inch touchscreen. When the PLC controller detects that the supercapacitor voltage is higher than the set high threshold of 60V, it controls the sound-emitting device to emit an alarm sound to remind the staff and quickly controls the switching contactor to connect the discharge resistor in series to the circuit, starting the mode of discharging with a smaller current. As the supercapacitor voltage gradually decreases, once it reaches the low threshold of 20V, the PLC controller immediately switches the switching contactor to connect the resistor in parallel, significantly increasing the discharge current and accelerating the discharge process. At the same time, by analyzing the voltage and current data and combining it with a specific calculation model, the capacity of the supercapacitor is calculated.

[0035] S3. Series Discharge Stage (High Voltage Range): When the supercapacitor voltage is at a high level, the discharge resistor is connected in series in the circuit. At this time, according to Ohm's law (I=U / R), since the total resistance of the series resistor is large, the discharge current is relatively small, and its waveform shows a slow downward trend. The initial discharge current is about 0.071A. As the capacitor voltage gradually decreases, the current also decreases steadily. Considering factors such as the equivalent internal resistance of the actual capacitor, the current is about 0.05A at the end of the series stage. The current change is relatively gentle throughout the process, effectively avoiding the impact of sudden current changes on the equipment. At the same time, the voltage waveform decreases at a relatively fast speed because when the series resistance is large, the supercapacitor voltage is mainly consumed by the resistance, realizing a safe and stable discharge process in the high voltage range.

[0036] S4. Parallel Discharge Stage (Low Voltage Range): When the supercapacitor voltage drops below the set threshold, the discharge resistors switch to parallel connection. At this time, the total circuit resistance decreases. According to Ohm's law (I=U / R), the discharge current will experience a significant jump, rising rapidly from about 0.05A at the end of the series stage. Considering factors such as the equivalent internal resistance of the capacitor and the line resistance, the current stabilizes at about 0.15A after the jump and gradually decreases. This change in current accelerates the capacitor discharge speed, making the voltage waveform drop faster in this stage until the supercapacitor voltage approaches zero, ensuring that the supercapacitor can discharge quickly and completely.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A super capacitor voltage detection and segmented discharge device comprising a PVC box (1), characterized in that: The inside of the PVC box (1) is fixedly connected with a panel (2), the bottom of the panel (2) is provided with a display screen (3), the panel (2) below the display screen (3) is provided with a switch button (4), the panel (2) on one side of the display screen (3) is provided with a charging interface (5), the panel (2) on the side away from the charging interface (5) is provided with a super capacitor detection wiring port (6) equidistantly, the inside of the PVC box (1) is provided with a voltage current acquisition module (7), one side of the inner wall of the PVC box (1) is provided with a switching contactor (8), the inside of the PVC box (1) is provided with a discharge resistance module (9), the inside of the PVC box (1) on the side away from the switching contactor (8) is provided with a lithium battery pack (10), the inside of the PVC box (1) is provided with a PLC controller (11), the display screen (3), the switch button (4), the charging interface (5), the super capacitor detection wiring port (6), the voltage current acquisition module (7), the switching contactor (8), the discharge resistance module (9) and the lithium battery pack (10) are electrically connected with the PLC controller (11).

2. A supercapacitor voltage detection and segmented discharge device according to claim 1, characterized in that: The inside of the PVC box (1) is provided with a temperature sensor (22) equidistantly, both sides of the panel (2) are provided with a heat dissipation hole (12) equidistantly, the bottom of the panel (2) is provided with a fan (13) at the heat dissipation hole (12), the temperature sensor (22) and the fan (13) are electrically connected with the PLC controller (11), the inner wall of the PVC box (1) is provided with a sound generating device (14) below one heat dissipation hole (12), the sound generating device (14) is electrically connected with the PLC controller (11).

3. A supercapacitor voltage detection and segmented discharge device according to claim 1, wherein: The top of the PVC box (1) is rotatably connected with a PVC box cover (15), the top of the outer wall of the PVC box (1) is provided with a limiting rail (16), the PVC box cover (15) is connected with the limiting rail (16) in cooperation, both sides of the front of the PVC box (1) are provided with a fixed buckle (17), both sides of the top of the PVC box cover (15) are provided with a bayonet (18), the fixed buckle (17) is connected with the bayonet (18) in cooperation.

4. A supercapacitor voltage detection and segmented discharge device according to claim 1, wherein: The front of the PVC box (1) is rotatably connected with a handle (19), the outer wall of the handle (19) is provided with a handle rubber sleeve (20).

5. A supercapacitor voltage detection and segmented discharge device according to claim 3, wherein: The outer wall of the PVC box (1) is provided with a reinforcing strip (21) equidistantly at the bottom of the limiting rail (16).

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