A heat monitoring device and heat management system for R290 refrigerant

Abstract

This invention discloses a heat monitoring device and thermal management system for R290 refrigerant, relating to the field of electric vehicle testing equipment. The device includes an electric vehicle testing machine, which comprises a monitoring module and a thermal management module. The monitoring module includes a noise sensor, an acceleration sensor, a temperature sensor, a pressure sensor, an R290 explosion-proof concentration sensor, a humidity sensor, and an airflow sensor. Based on the setup of the electric vehicle testing machine, this invention can monitor temperature, pressure, R290 refrigerant, humidity, acceleration, and noise during electric vehicle testing. It can also be used in-vehicle to manage abnormal heat generated by R290 refrigerant leakage.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle testing equipment, and in particular to a heat monitoring device and thermal management system for R290 refrigerant. Background Technology

[0002] In electric vehicles, R290 refrigerant is used in the air conditioning system. When the amount of R290 refrigerant is abnormal (too much or too little), it may cause poor flow or pressure changes, which may produce a hissing sound. If R290 refrigerant leaks due to loose pipes or damaged components, the gas flow or escape may be accompanied by noise. Moreover, as a flammable refrigerant, R290 refrigerant can easily cause a fire when it leaks, as it may be ignited by electronic components such as thermostats, compressor relays, lights, and defrost buttons that are used as ignition sources during the operation of the electric vehicle.

[0003] When R290 refrigerant enters an electric vehicle through the air intake, it can cause mild neurological symptoms such as dizziness, headache, and fatigue. High-concentration exposure can cause confusion, drowsiness, and impaired reaction time. In severe cases, it can suppress breathing, leading to suffocation or even death.

[0004] When R290 refrigerant enters the vehicle through the air intake, it causes the interior temperature to be significantly higher than the normal temperature threshold, which not only affects the riding experience but also causes abnormal heat distribution in the vehicle. Furthermore, excessive R290 refrigerant entering the vehicle can pose a threat to the health of the occupants.

[0005] Existing testing equipment for electric vehicles is difficult to manage R290 refrigerant leaks and the resulting thermal anomalies.

[0006] Therefore, it is necessary to propose a heat monitoring device and thermal management system for R290 refrigerant to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a heat monitoring device and thermal management system for R290 refrigerant, which solves the problem that it is difficult to manage R290 refrigerant leakage and the abnormal heat caused by R290 refrigerant leakage in test equipment for electric vehicles.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a heat monitoring device for R290 refrigerant, comprising:

[0009] An electric vehicle testing machine, the electric vehicle testing machine including a monitoring module and a thermal management module;

[0010] The monitoring module includes a noise sensor, an acceleration sensor, a temperature sensor, a pressure sensor, an R290 explosion-proof concentration sensor, a humidity sensor, and an airflow sensor. The noise sensor, acceleration sensor, temperature sensor, pressure sensor, R290 explosion-proof concentration sensor, humidity sensor, and airflow sensor are all connected to a microcontroller. The microcontroller is connected to a display module and an alarm module.

[0011] The thermal management module includes a base, a suction seat, and an air outlet arranged sequentially from bottom to top. The suction seat has multiple air inlets, which are arranged in a circular array around the suction seat. The air outlet has multiple air outlets, which are arranged in a spiral trajectory around the outer ring of the air outlet.

[0012] The suction base is equipped with a fan that provides power. The fan transports the air drawn in from the suction port to the air outlet and discharges it. The air outlet duct has a purification chamber inside, in which a filter assembly is installed to filter the air before it enters the air outlet.

[0013] Preferably, the purification chamber extends through both the upper and lower surfaces of the air outlet duct. A lower support plate is fixedly installed inside the lower end of the purification chamber, and an upper pressure cover is connected to the inner ring of the upper end of the purification chamber by a threaded connection. The filter assembly is pressed and fixed between the upper pressure cover and the lower support plate, and an upper air outlet is provided on the upper pressure cover.

[0014] Preferably, the upper surface of the air outlet duct is provided with four threaded grooves, and a fan assembly is installed in the threaded grooves.

[0015] Preferably, a first spring telescopic rod is fixedly provided on the upper surface of the suction seat, and the upper end of the first spring telescopic rod is fixedly connected to the bottom of the lower support plate.

[0016] Preferably, the filter assembly includes a filter screen sleeve, a filter cotton sleeve, and an activated carbon filling layer. The filter screen sleeve is a cylindrical shell structure with an open bottom. An interlayer is provided in the wall structure of the cylindrical shell structure, and the activated carbon filling layer is installed in the interlayer. The filter cotton sleeve is disposed inside the cylindrical shell structure and is a cylindrical structure with an open bottom. A trapezoidal groove is provided at the upper end of the filter screen sleeve, and a locking block that cooperates with the trapezoidal groove is fixedly provided at the bottom of the upper pressure cover.

[0017] Preferably, a dust removal component is movably disposed inside the lower end of the filter cotton sleeve. The dust removal component includes a column structure with a rectangular air channel in the middle of the column structure, which penetrates both the upper and lower surfaces of the column structure. A collection groove is also disposed on the column structure, which is distributed around the rectangular air channel. The upper end of the collection groove penetrates the upper surface of the column structure. The outer ring of the column structure is movably fitted against the inner ring wall of the filter cotton sleeve. A pair of elastic baffles are disposed at the upper opening of the rectangular air channel, and the upper ends of the pair of elastic baffles are movably fitted against each other.

[0018] Preferably, the inner ring wall structure of the filter sleeve is provided with an elastic element, the elastic element including a spring and a pressure plate. One end of the spring is fixedly connected to the inner ring wall structure of the filter sleeve, and the other end of the spring is fixedly connected to the pressure plate. The pressure plate is movably attached to the outer ring wall of the filter cotton sleeve. Multiple sets of elastic elements are provided, and the multiple sets of elastic elements are distributed at equal distances.

[0019] Preferably, the fan is fixedly installed in the middle of the upper surface of the suction base. The suction base has a central cavity inside, which is simultaneously connected to multiple suction ports. The lower end of the fan is connected to the middle of the central cavity. An air compression and discharge assembly is provided above the fan. The air compression and discharge assembly includes a compression box fixedly installed on the upper surface of the fan and a discharge pipe fixedly installed on the upper end of the compression box. A flared pipe is integrally provided in the middle of the discharge pipe. A second electromagnet and a movable sealing plate are respectively provided above and below the flared pipe. The outer ring of the movable sealing plate is movably attached to the discharge pipe. On the inner wall of the lower end of the discharge pipe, a second electromagnet is fixed to the inner wall of the upper end of the discharge pipe by a bracket. A first electromagnet is fixedly installed in the middle of the upper surface of the movable sealing plate. The first electromagnet corresponds to the second electromagnet. A second spring telescopic rod is fixedly connected to the bottom of the movable sealing plate. The lower end of the second spring telescopic rod is fixedly installed on the bottom surface of the compression box. The lower end of the discharge pipe is connected to the inside of the compression box. A flexible hose is connected to the upper end of the discharge pipe. A round hole is provided in the middle of the lower support plate. The lower end of the round hole is connected to the flexible hose, and the upper end of the round hole is connected to the lower end of the rectangular air channel.

[0020] Preferably, the base has an electrical slot inside, which contains a controller and a DC lithium battery. The outer ring of the base has a wire slot, and the side of the base has a USB connector. The wires on the USB connector are wound in the wire slot. A suction cup is fixedly installed at the bottom of the base. The base is fixedly connected to the suction base, and the suction base is movably fitted to the air outlet.

[0021] Preferably, an electromagnetic valve is provided in the air outlet.

[0022] The present invention also discloses a thermal management system for R290 refrigerant, including a heat monitoring device for R290 refrigerant, and further including the following modules:

[0023] The monitoring module uses noise sensors, acceleration sensors, temperature sensors, pressure sensors, R290 explosion-proof concentration sensors, humidity sensors, and airflow sensors to monitor noise, acceleration, temperature, in-vehicle pressure, R290 agent concentration, humidity, and airflow during the electric vehicle test process.

[0024] The thermal management module utilizes a purification mechanism to purify leaked R290 refrigerant and manage the heat inside the vehicle.

[0025] The technical effects and advantages of this invention are as follows:

[0026] 1. The electric vehicle testing machine in this invention can monitor temperature, pressure, R290 refrigerant, humidity, acceleration and noise during electric vehicle testing. It can also be used in vehicles to manage abnormal heat caused by R290 refrigerant leakage.

[0027] 2. In this invention, when an anomaly is detected, the display module can be controlled by a single-chip microcomputer to display the information and the alarm module can be triggered to provide early warning of potential vehicle malfunctions. This improves vehicle safety performance, reduces losses caused by vehicle malfunctions, and fully addresses and resolves a series of problems caused by R290 refrigerant.

[0028] 3. When the R290 explosion-proof concentration sensor detects that R290 refrigerant has entered the vehicle, the temperature sensor detects that the heat inside the vehicle is too high, or the pressure sensor detects that the air pressure inside the vehicle is abnormal, the starting power of the fan can be increased to achieve rapid management of the heat inside the vehicle and reduce the amount of residual R290 refrigerant inside the vehicle.

[0029] 4. The activated carbon filling layer 33 can adsorb or intercept R290 refrigerant molecules, reducing their concentration in the vehicle and reducing safety issues caused by R290 refrigerant leakage.

[0030] 5. When the purified air is discharged, it can be discharged around the circumference of the air duct, which can be discharged to the areas of the driver's seat, the front passenger seat and the rear seats, so that all occupants in the car can breathe fresh air and maintain good air quality.

[0031] 6. The spiral-shaped air outlets create a more layered feel to the exhaust air, ensuring good air quality in the space.

[0032] 7. When there is only the driver in the car or the car is not full, the solenoid valve corresponding to the driver or other people can be opened so that the exhaust fresh air is discharged towards the driver or other people, making full use of the fresh air. You can choose to use it reasonably according to the actual situation.

[0033] 8. It achieves full utilization of fresh air and ensures that the air inhaled by passengers is fresh air, replacing the way that ordinary purification mechanisms and smart purifiers in the existing technology ignore the role of fresh air.

[0034] 9. The fresh air discharged from the air outlet is discharged in a vertical shaking manner to avoid direct blowing. In addition, the invention utilizes the bumpy force during the operation of the car to make the discharged fresh air shake vertically, which is more energy-efficient. Attached Figure Description

[0035] Figure 1 This is a block diagram of the heat monitoring device for R290 refrigerant according to the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of the electric vehicle testing machine of the present invention;

[0037] Figure 3 This is a front view of the electric vehicle testing machine of the present invention;

[0038] Figure 4 This is a cross-sectional view of the electric vehicle testing machine of the present invention;

[0039] Figure 5 This is a schematic diagram of the air outlet structure of the present invention;

[0040] Figure 6 This is a schematic diagram of the internal structure of the suction base of the present invention;

[0041] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle;

[0042] Figure 8 This is a schematic diagram of the structure of the movable sealing plate of the present invention when it is opened upwards;

[0043] Figure 9 This is a schematic diagram of the filter assembly structure of the present invention;

[0044] Figure 10 This is a schematic diagram of the filter sleeve structure of the present invention;

[0045] Figure 11 This is a schematic diagram of the filter cotton sleeve structure of the present invention;

[0046] Figure 12 This is a schematic diagram of the dust removal component structure of the present invention;

[0047] Figure 13 For the present invention Figure 9 Enlarged schematic diagram of the structure at point B;

[0048] Figure 14 This is a schematic diagram of the elastic baffle of the present invention when it is open;

[0049] Figure 15 This is a wind direction diagram when the fan assembly of the present invention is installed above the air outlet;

[0050] Figure 16 This is a wind direction diagram when the fan assembly of the present invention is installed on the side of the air outlet.

[0051] In the diagram: 1. Base; 2. Suction seat; 3. Air outlet; 4. Upper pressure cover; 5. Cable channel; 6. Suction port; 7. Air outlet; 8. Upper air vent; 9. Threaded groove; 10. Fan assembly; 11. Electrical compartment; 12. Controller; 13. DC lithium battery; 14. USB connector; 15. Fan; 16. Centralized chamber; 17. First spring telescopic rod; 18. Purification chamber; 19. Air compression and emission assembly; 20. Lower support plate; 21. Filter assembly; 22. Solenoid valve; 23. Round hole; 24. Hose; 25. Emission. 25. Pipe 26. Compression box 27. Flared pipe 28. Second spring telescopic rod 29. Movable sealing plate 30. First electromagnet 31. Second electromagnet 32. Filter screen sleeve 33. Activated carbon filling layer 34. Filter cotton sleeve 35. Elastic element 36. Dust removal assembly 37. Trapezoidal slot 38. Column structure 39. Rectangular air channel 40. Collection tank 40. Elastic baffle 41. Filter screen sleeve cover 42. Filter screen sleeve housing 43. Spring 44. Pressure plate 45. Suction cup 46. Detailed Implementation

[0052] This invention provides, for example Figures 1-16 The diagram shows a heat monitoring device and thermal management system for R290 refrigerant.

[0053] Among them, the heat monitoring device uses an electric vehicle testing machine to monitor the temperature, noise, pressure, acceleration, humidity and airflow velocity in the electric vehicle;

[0054] It should be noted that noise sensors, acceleration sensors, temperature sensors, pressure sensors, R290 explosion-proof concentration sensors, humidity sensors, and air flow rate sensors can be integrated into the electric vehicle testing machine and placed inside an electric vehicle for monitoring.

[0055] The noise sensor, acceleration sensor, temperature sensor, pressure sensor, R290 explosion-proof concentration sensor, humidity sensor, and air flow rate sensor are all connected to the microcontroller, which is connected to the display module and alarm module.

[0056] When testing electric vehicles, noise sensors can be used to monitor the noise generated inside the electric vehicle. If the noise level is higher than the normal value, it indicates that there is an abnormality in the braking system of the electric vehicle, an abnormality in the R290 refrigerant charge, or that the R290 refrigerant is leaking due to loose pipes or damaged components.

[0057] If the acceleration sensor detects abnormal acceleration in the car, it indicates that the car's braking performance is abnormal.

[0058] If the temperature sensor detects that the temperature inside the car is too high, it indicates that the temperature of the electronic components inside the car may be too high, which could easily lead to a fire.

[0059] If the pressure sensor detects an increase in pressure inside the car, it may be due to excessive R290 refrigerant charge, leading to increased system pressure; it may also be due to non-condensable gases mixing into the system, causing increased pressure and deteriorating the air quality inside the electric vehicle.

[0060] If the R290 explosion-proof concentration sensor detects that R290 refrigerant has entered the vehicle through the air intake, it can easily cause safety problems.

[0061] If the humidity sensor detects abnormal humidity inside the car, it can easily affect the experience of the driver and passengers.

[0062] When R290 refrigerant enters the vehicle through the intake, it reduces the effectiveness of the electric vehicle's air conditioning system, increases the interior temperature, and the temperature sensor detects an abnormally high interior temperature (e.g., when the electric vehicle's air conditioning is on, the interior temperature is significantly higher than the normal temperature threshold). Effective measures are taken to first cool the interior of the electric vehicle to reduce the air temperature and prevent fires. Then, the abnormal information is simultaneously triggered by an alarm for timely handling.

[0063] In this invention, a purification mechanism is installed inside the vehicle to monitor the heat inside the vehicle and to deal with a series of problems caused by R290 refrigerant leakage; the purification mechanism is installed on the electric vehicle testing machine.

[0064] Specifically, the purification system uses the principle of rapidly reducing the air temperature by compressing and then releasing air to lower the air temperature inside the vehicle. This prevents R290 refrigerant from entering the vehicle's refrigeration system and causing excessive heat inside the vehicle, thus reducing the likelihood of fire. Furthermore, the purification system can adsorb and intercept R290 refrigerant, reducing the threat to human health caused by R290 refrigerant entering the vehicle.

[0065] In summary, the electric vehicle testing machine of this invention can monitor temperature, pressure, R290 refrigerant, humidity, acceleration and noise during electric vehicle testing. It can also be used in vehicles to manage abnormal heat generated by R290 refrigerant leakage.

[0066] Correspondingly, the air velocity sensor can also detect the decrease in air velocity inside the car. The purification mechanism in this invention can also improve the experience of electric vehicles. The purification mechanism also includes a base 1, a suction seat 2, and an air outlet 3 arranged sequentially from bottom to top. The suction seat 2 has a suction port 6 for air intake, and the air outlet 3 has an air outlet 7 for air exhaust. The air outlet 3 has a purification chamber 18 inside, and a filter component 21 for filtering air is installed in the purification chamber 18. When air is drawn in from the suction port 6, it is filtered by the filter component 21 and then discharged from the air outlet 7, thus achieving the purpose of purifying the air.

[0067] The base 1 is fixedly installed at the bottom of the suction seat 2 to serve as the main support. The bottom of the base 1 is fixedly provided with a suction cup 46, which can be attached to the cover above the storage compartment at the center armrest of the car, so that the base 1 is located between the driver's seat and the passenger seat.

[0068] It should be noted that, in actual use, the base 1 can be installed in a suitable position according to actual needs; when the base 1 is installed on the cover above the storage compartment in the center armrest of the car, the base 1 can move with the opening and closing of the cover, and the opening and closing of the cover will not affect the purification mechanism.

[0069] In this invention, the suction base 2 has multiple suction ports 6, which are arranged in a circular array around the suction base 2. This allows the air around the suction base 2 to enter the purification mechanism evenly for purification, replacing the method of drawing air in from a single direction in the prior art, and can handle a wider range of air.

[0070] Existing air purification systems often fail to allow occupants in the driver's seat and rear seat to breathe fresh air simultaneously. This invention addresses this by providing multiple air outlets 7 arranged in a spiral pattern around the outer edge of the air duct 3. When purified air is discharged, it is directed around the circumference of the air duct 3, effectively reaching the areas of the driver's seat, front passenger seat, and rear seat. This ensures that all occupants in the vehicle breathe fresh air, maintaining good air quality. The air exhaled by occupants is typically heavier and is drawn into the lower part of the vehicle's interior space for further filtration by multiple air intakes 6.

[0071] Furthermore, the spiral-shaped air outlets 7 make the exhaust air more layered, ensuring good air quality within a certain height range and reducing the impact of excessively high air pressure, abnormal temperature, or poor-quality gas inside the electric vehicle, thus improving safety.

[0072] Therefore, the electric vehicle testing machine of this invention, installed in an electric vehicle, can not only monitor the temperature, pressure, R290 refrigerant, humidity, acceleration, and noise of the electric vehicle, but also provide a comfortable riding environment inside the electric vehicle. The electric vehicle testing machine is used with the vehicle, and when an abnormality is detected, it can display the information through the microcontroller control display module and alarm the alarm module, effectively providing early warning of potential faults in the vehicle, improving vehicle safety performance, and reducing losses caused by vehicle malfunctions.

[0073] In this invention, an electromagnetic valve 22 is also provided in the air outlet 7, and an electrical slot 11 is provided inside the base 1. The electrical slot 11 is provided with a controller 12 and a DC lithium battery 13. The DC lithium battery 13 is used to store electrical energy to supply the purification mechanism. The controller 12 is used to control the opening or closing of the electromagnetic valves 22 at different positions. When there is only the driver in the car or the car is not full, the electromagnetic valves 22 corresponding to the driver or other people's positions can be opened, so that the fresh air is discharged towards the driver or other people, making full use of the fresh air. The appropriate use can be selected according to the actual situation.

[0074] It should be noted that the noise sensor, acceleration sensor, temperature sensor, pressure sensor, humidity sensor, and air flow rate sensor are all integrated in the electrical tank 11. The electrical tank 11 is equipped with inlet and outlet and filter screen, which are not shown in the figure and will not be described in detail here.

[0075] In summary, this invention achieves the goal of fully utilizing fresh air and ensuring that the air inhaled by passengers is fresh air, replacing the approach of ordinary purification mechanisms and smart purifiers in the prior art that ignores whether fresh air can be inhaled by passengers.

[0076] Considering that the purification mechanism is usually installed between the driver's seat and the passenger seat, and the air outlet 7 is close to the driver's seat and the passenger seat, the direct blowing of fresh air from the air outlet 7 can easily make the occupants sick or cold. Therefore, a structure that can shake up and down is designed so that the fresh air from the air outlet 7 is discharged in a shaking manner to avoid direct blowing.

[0077] To save energy, this invention utilizes the bumps and vibrations of the car during operation to cause the exhaust air to vibrate up and down. Specifically, the purification chamber 18 extends through both the upper and lower surfaces of the air outlet duct 3. A lower support plate 20 is fixedly installed inside the lower end of the purification chamber 18. A first spring telescopic rod 17 is fixedly installed on the upper surface of the suction seat 2. The upper end of the first spring telescopic rod 17 is fixedly connected to the bottom of the lower support plate 20. When the car bumps up and down during operation, the first spring telescopic rod 17 extends and retracts, thereby causing the air outlet duct 3 to vibrate up and down above the suction seat 2. The fresh air output from the air outlet 7 is delivered in a vibrating up and down manner to avoid direct blowing.

[0078] The power mechanism for drawing air from the air intake 6 to the air outlet 7 in this invention is a fan 15. The fan 15 is fixedly installed in the middle of the upper surface of the air intake base 2. The air intake base 2 has a central cavity 16 inside, which is connected to multiple air intakes 6. The lower end of the fan 15 is connected to the middle of the central cavity 16. When the fan 15 is started, it can draw external air into the air intake 6, the central cavity 16 and the fan 15 in sequence.

[0079] Fan 15 can use a conventional adjustable power fan, such as a waterproof fan of model KFL17251HB2-7. When the R290 explosion-proof concentration sensor detects that R290 refrigerant has entered the vehicle, the temperature sensor detects that the heat inside the vehicle is too high, or the pressure sensor detects that the air pressure inside the vehicle is abnormal, the starting power of fan 15 can be increased, thereby achieving rapid management of the heat inside the vehicle and reducing the residual R290 refrigerant inside the vehicle.

[0080] In this invention, the filter assembly 21 includes a filter screen sleeve 32, a filter cotton sleeve 34, and an activated carbon filling layer 33. Air is discharged after being filtered through the filter cotton sleeve 34 and the activated carbon filling layer 33, resulting in good air quality. In practice, the activated carbon filling layer 33 can be replaced with other filter materials (HEPA filter layer) to meet different needs. Furthermore, the activated carbon filling layer 33 can adsorb or intercept R290 refrigerant molecules, reducing their concentration in the vehicle and reducing safety issues caused by R290 refrigerant leakage.

[0081] To facilitate the assembly and disassembly of the filter assembly 21, the filter sleeve 32 is a cylindrical shell structure with an open bottom. A sandwich structure is provided within the wall of the cylindrical shell structure, and the activated carbon filling layer 33 is installed within this sandwich structure. The filter cotton sleeve 34 is located inside the cylindrical shell structure and is also a cylindrical structure with an open bottom. A trapezoidal groove 37 is provided at the upper end of the filter sleeve 32. A locking block that mates with the trapezoidal groove 37 is fixedly provided at the bottom of the upper pressure cover 4. The upper pressure cover 4 is connected to the inner ring of the upper end of the purification chamber 18 via a threaded connection. The filter assembly 21 is pressed and fixed between the upper pressure cover 4 and the lower support plate 20. A detachable filter sleeve cover 42 and a filter sleeve shell 43 are provided at the upper end of the filter sleeve 32. The filter sleeve cover 42 is connected to the upper end of the filter sleeve shell 43 via a threaded connection, facilitating the installation and removal of the activated carbon filling layer 33. When the upper pressure cover 4 is opened, the entire filter assembly 21 can be removed from the purification chamber 18 along with the upper pressure cover 4, making it convenient to use.

[0082] Furthermore, the upper pressure cover 4 is equipped with an upper air vent 8, and the upper end of the purification mechanism also emits air, making the fresh air exhaust direction wider.

[0083] When air passes through the filter cotton sleeve 34, dust and other particulate matter in the air are filtered out and usually adhere to the surface of the filter cotton sleeve 34. This not only reduces the filtration efficiency but also shortens the service life of the filter cotton sleeve 34. Therefore, a dust removal component 36 is movably installed inside the lower end of the filter cotton sleeve 34. The dust removal component 36 includes a column structure 38, with a rectangular air channel 39 in the middle of the column structure 38. The rectangular air channel 39 penetrates both the upper and lower surfaces of the column structure 38. A collection groove 40 is also provided on the column structure 38, surrounding the rectangular air channel. The rectangular air channel 39 is arranged in a ring. The upper end of the collection tank 40 penetrates the upper surface of the column structure 38. The outer ring of the column structure 38 is movably attached to the inner ring wall of the filter cotton sleeve 34. A pair of elastic baffles 41 are provided at the upper opening of the rectangular air channel 39. The upper ends of the pair of elastic baffles 41 are movably attached to each other. When working, the air passes through the rectangular air channel 39 and pushes the pair of elastic baffles 41 to open relative to each other before entering the interior of the filter cotton sleeve 34 to achieve filtration. Some of the filtered dust and other particles fall into the collection tank 40 for collection. When the filter assembly 21 is removed, it is convenient for cleaning.

[0084] In addition, an air compression and discharge assembly 19 is provided above the fan 15 in this invention. The air compression and discharge assembly 19 includes a compression box 26 fixedly installed on the upper surface of the fan 15 and a discharge pipe 25 fixedly installed on the upper end of the compression box 26. A flared pipe 27 is integrally provided in the middle of the discharge pipe 25. A second electromagnet 31 and a movable sealing plate 29 are respectively provided above and below the flared pipe 27. The outer ring of the movable sealing plate 29 is movably attached to the inner wall of the lower end of the discharge pipe 25. The second electromagnet 31 is fixed to the inner wall of the upper end of the discharge pipe 25 by a bracket. A first electromagnet 30 is fixedly installed in the middle of the upper surface, corresponding to a second electromagnet 31. A second spring telescopic rod 28 is fixedly connected to the bottom of the movable sealing plate 29. The lower end of the second spring telescopic rod 28 is fixedly installed on the bottom surface of the compression box 26. The lower end of the discharge pipe 25 communicates with the inside of the compression box 26, and a flexible hose 24 is connected to the upper end of the discharge pipe 25. A circular hole 23 is provided in the middle of the lower support plate 20. The lower end of the circular hole 23 communicates with the flexible hose 24, and the upper end of the circular hole 23 communicates with the lower end of the rectangular air channel 39. When the second When electromagnets 31 and 30 are energized, they repel each other, causing the air output from fan 15 to converge in compression box 26. When the air in compression box 26 reaches a certain pressure, the pressurized air pushes the movable sealing plate 29 upward, causing it to move into flared pipe 27. At this time, the air in compression box 26 can enter the upper end of discharge pipe 25 and then pass through hose 24, round hole 23, and rectangular air channel 39 before being discharged into the interior of filter cotton sleeve 34 for filtration. After the air in the compression box 26 is discharged, the movable sealing plate 29 is reset with the assistance of the second spring telescopic rod 28 and magnetic force, so that air is re-accumulated in the compression box 26. This forms an intermittent pressurized airflow into the rectangular air channel 39, causing the column structure 38 to move upward in the filter cotton sleeve 34. After moving upward, the column structure 38 resets downward due to gravity. During the up-and-down movement of the column structure 38, dust and other particles adsorbed on the inner wall of the filter cotton sleeve 34 are scraped off into the collection tank 40 or the lower end of the filter cotton sleeve 34.

[0085] It should be noted that the dust and other particles scraped into the collection tank 40 are easy to collect and clean, while the dust and other particles scraped into the lower part of the filter cotton sleeve 34 will be driven by the airflow to be output from between a pair of elastic baffles 41 to the upper part of the filter cotton sleeve 34, and then enter the collection tank 40 for collection. Since the remaining area at the bottom of the column structure 38 also receives compressed air, when the air reaches the bottom of the column structure 38, it will first push the column structure 38 upward, and then the air will gradually pass through a pair of elastic baffles 41.

[0086] Furthermore, after the air passes through the compression box 26, it is compressed and then released. By utilizing the principle of adiabatic expansion and the Joule-Thomson effect, the air temperature is rapidly reduced, which solves the problem of abnormal heat caused by R290 refrigerant leakage and is also beneficial to the energy saving of the air conditioning system.

[0087] Furthermore, in this invention, the inner ring wall structure of the filter sleeve 32 is provided with an elastic element 35. The elastic element 35 includes a spring 44 and a pressure plate 45. One end of the spring 44 is fixedly connected to the inner ring wall structure of the filter sleeve 32, and the other end of the spring 44 is fixedly connected to the pressure plate 45. The pressure plate 45 is movably attached to the outer ring wall of the filter cotton sleeve 34. Multiple sets of elastic elements 35 are provided, and the multiple sets of elastic elements 35 are evenly distributed. When the column structure 38 moves up and down or when the car bumps during driving, the pressure plate 45 will vibrate, thereby making it easier for dust and other particles on the inner wall of the filter cotton sleeve 34 to fall off, especially helping dust and other particles in the pore structure on the surface of the filter cotton sleeve 34 to fall off. This not only increases the service life of the filter cotton sleeve 34, but also enables the filter cotton sleeve 34 to maintain a high air filtration effect.

[0088] In this invention, four threaded grooves 9 are provided on the upper surface of the air outlet 3. A fan assembly 10 is installed in the threaded grooves 9. The fan assembly 10 includes a screw, a nut, a rotating sleeve, and fan blades. The screw is connected to the threaded grooves 9 by a threaded fit. The end of the air outlet 7 is also provided with a threaded hole that mates with the screw. The upper outer ring of the screw is smooth and the rotating sleeve is provided with a rotating sleeve. The fan blades are fixed to the outer ring of the rotating sleeve. Two nuts are provided. The two nuts are located above and below the rotating sleeve respectively and are connected to the screw by a threaded fit. When air is discharged from the upper air outlet 8, the wind force drives the fan blades to rotate, thereby increasing the wind force diffusion surface.

[0089] When the fan assembly 10 at the threaded groove 9 is installed into the air outlet 7 at the appropriate position, the air force discharged from the multiple air outlets 7 near the fan assembly 10 can be concentrated and delivered to the driver by the rotation of the fan blades. When there is only one driver, the fan assembly 10 can be installed on the air outlet 7 closest to the driver's seat, and the solenoid valves 22 in the multiple air outlets 7 facing the driver's seat can be opened, so that the air force in the multiple air outlets 7 is attracted and guided by the fan and delivered to the driver, so that the driver can obtain fresh air within a certain height range.

[0090] It should be noted that the fresh air within a certain height range mentioned above refers to the fresh air emitted from the air outlets 7 at different height positions. In the prior art, if fresh air is emitted through only one air outlet 7 at a certain height position, the fresh air will be delivered to the driver in a horizontal direction. If the driver's height is different from that air outlet 7, the driver will have difficulty receiving the fresh air. Therefore, the present invention is provided with multiple air outlets 7, and the fresh air within a certain height range is delivered to the driver by a fan, so that the fresh air volume is large and can be received by the driver.

[0091] In this invention, a wire groove 5 is provided on the outer ring of the base 1, and a USB connector 14 is provided on the side of the base 1. The USB connector 14 is connected to the DC lithium battery 13. The suction seat 2 and the interior of the base 1 are provided with wire grooves for wires to pass through. After the wires pass through the wire grooves, they are connected to the USB connector 14 and the DC lithium battery 13. The USB connector 14 can be inserted into the USB charging port on the car to charge the DC lithium battery 13.

[0092] The wire on the USB connector 14 is wound in the wire groove 5, which makes it easy to select the length of the wire extension according to actual needs. The suction base 2 and the air outlet 3 are in close contact, which provides the conditions for the air outlet 3 to vibrate up and down.

Claims

1. A heat monitoring device for R290 refrigerant, characterized by, include: An electric vehicle testing machine, the electric vehicle testing machine including a monitoring module and a thermal management module; The monitoring module includes a noise sensor, an acceleration sensor, a temperature sensor, a pressure sensor, an R290 explosion-proof concentration sensor, a humidity sensor, and an airflow sensor. The noise sensor, acceleration sensor, temperature sensor, pressure sensor, R290 explosion-proof concentration sensor, humidity sensor, and airflow sensor are all connected to a microcontroller. The microcontroller is connected to a display module and an alarm module. The thermal management module includes a base (1), a suction seat (2), and an air outlet (3) arranged sequentially from bottom to top. The suction seat (2) has a suction port (6), and multiple suction ports (6) are arranged in a circular array around the suction seat (2). The air outlet (3) has an air outlet (7), and a solenoid valve (22) is installed in the air outlet (7). Multiple air outlets (7) are arranged in a spiral trajectory around the outer ring of the air outlet (3). The suction seat (2) is equipped with a fan (15) that provides power. The fan (15) transports the air drawn in at the suction port (6) to the air outlet (7) for discharge. The air outlet (3) is equipped with a purification chamber (18). A filter assembly (21) for filtering the air is installed in the purification chamber (18). The filter assembly (21) is used to filter the air before it enters the air outlet (7). The purification chamber (18) extends through the upper and lower surfaces of the air outlet (3). A lower support plate (20) is fixedly installed inside the lower end of the purification chamber (18). An upper pressure cover (4) is connected to the inner ring of the upper end of the purification chamber (18) by threaded connection. The filter assembly (21) is pressed and fixed between the upper pressure cover (4) and the lower support plate (20). An upper air outlet (8) is provided on the upper pressure cover (4). The filter assembly (21) includes a filter screen sleeve (32), a filter cotton sleeve (34), and an activated carbon filling layer (33). The filter screen sleeve (32) is a cylindrical shell structure with an open bottom. An interlayer is provided in the wall structure of the cylindrical shell structure. The activated carbon filling layer (33) is installed in the interlayer. The filter cotton sleeve (34) is located inside the cylindrical shell structure. The filter cotton sleeve (34) is a cylindrical structure with an open bottom. A trapezoidal groove (37) is provided at the upper end of the filter screen sleeve (32). A locking block that cooperates with the trapezoidal groove (37) is fixedly provided at the bottom of the upper cover (4). The lower end of the filter cotton sleeve (34) is movably provided with a dust removal component (36). The dust removal component (36) includes a column structure (38). A rectangular air channel (39) is provided in the middle of the column structure (38). The rectangular air channel (39) passes through the upper and lower surfaces of the column structure (38). A collection groove (40) is also provided on the column structure (38). The collection groove (40) is distributed around the rectangular air channel (39). The upper end of the collection groove (40) passes through the upper surface of the column structure (38). The outer ring of the column structure (38) is movably attached to the inner ring wall of the filter cotton sleeve (34). A pair of elastic baffles (41) are provided at the upper opening of the rectangular air channel (39). The upper ends of the pair of elastic baffles (41) are movably attached to each other. The inner ring wall structure of the filter sleeve (32) is provided with an elastic element (35). The elastic element (35) includes a spring (44) and a pressure plate (45). One end of the spring (44) is fixedly connected to the inner ring wall structure of the filter sleeve (32), and the other end of the spring (44) is fixedly connected to the pressure plate (45). The pressure plate (45) is movably attached to the outer ring wall of the filter cotton sleeve (34). There are multiple sets of elastic elements (35), and the multiple sets of elastic elements (35) are evenly distributed.

2. The heat monitoring device for R290 refrigerant according to claim 1, characterized in that: The upper surface of the air outlet (3) is provided with four threaded grooves (9), and a fan assembly (10) is installed in the threaded grooves (9).

3. The heat monitoring device for R290 refrigerant according to claim 1, characterized in that: The upper surface of the suction seat (2) is fixedly provided with a first spring telescopic rod (17), and the upper end of the first spring telescopic rod (17) is fixedly connected to the bottom of the lower support plate (20).

4. The heat monitoring device for R290 refrigerant according to claim 1, characterized in that: The blower (15) is fixedly installed in the middle of the upper surface of the suction seat (2). The suction seat (2) has a central cavity (16) inside. The central cavity (16) is connected to multiple suction ports (6) at the same time. The lower end of the blower (15) is connected to the middle of the central cavity (16). An air compression and discharge assembly (19) is provided above the blower (15). The air compression and discharge assembly (19) includes a compression box (26) fixedly installed on the upper surface of the blower (15) and a discharge pipe (25) fixedly installed on the upper end of the compression box (26). A flared pipe (27) is integrally provided in the middle of the discharge pipe (25). A second electromagnet (31) and a movable sealing plate (29) are respectively provided above and below the flared pipe (27). The outer ring of the movable sealing plate (29) is movably attached to the discharge pipe (25). 5) On the lower inner wall, the second electromagnet (31) is fixed to the upper inner wall of the discharge pipe (25) by a bracket. The first electromagnet (30) is fixedly installed in the middle of the upper surface of the movable sealing plate (29). The first electromagnet (30) and the second electromagnet (31) correspond to each other. The bottom of the movable sealing plate (29) is fixedly connected to the second spring telescopic rod (28). The lower end of the second spring telescopic rod (28) is fixedly installed on the bottom surface of the compression box (26). The lower end of the discharge pipe (25) is connected to the inside of the compression box (26). The upper end of the discharge pipe (25) is connected to the hose (24). The middle of the lower support plate (20) is provided with a round hole (23). The lower end of the round hole (23) is connected to the hose (24). The upper end of the round hole (23) is connected to the lower end of the rectangular air channel (39).

5. The heat monitoring device for R290 refrigerant according to claim 1, characterized in that: The base (1) has an electrical slot (11) inside, and a controller (12) and a DC lithium battery (13) are installed in the electrical slot (11). A wire slot (5) is provided on the outer ring of the base (1). A USB connector (14) is provided on the side of the base (1). The wires on the USB connector (14) are wound in the wire slot (5). A suction cup (46) is fixedly installed at the bottom of the base (1). The base (1) is fixedly connected to the suction seat (2). The suction seat (2) is movably fitted to the air outlet (3).

6. A thermal management system for R290 refrigerant, characterized in that: The heat monitoring device for R290 refrigerant as described in any one of claims 1-5 further includes the following modules: The monitoring module uses noise sensors, acceleration sensors, temperature sensors, pressure sensors, R290 explosion-proof concentration sensors, humidity sensors, and airflow sensors to monitor noise, acceleration, temperature, in-vehicle pressure, R290 agent concentration, humidity, and airflow during the electric vehicle test process. The thermal management module utilizes a purification mechanism to purify leaked R290 refrigerant and manage the heat inside the vehicle.

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