A heat dissipation assembly for a new energy vehicle

Abstract

This invention discloses a heat dissipation assembly for new energy vehicles, relating to the field of energy-saving motor technology. It includes a heat exchanger, a fan housing located on the air outlet side of the heat exchanger, a fan for exhaust, and a motor assembly. A filter assembly is installed on the air inlet side of the heat exchanger to block seasonal lint. The filter assembly consists of a coarse filter and a fine filter; the fine filter filters lint, while the coarse filter ensures adequate ventilation. A first roller is located at one end of the heat exchanger, and a second roller is located at the other end. Rollers one and two are used to wind the coarse and fine filters, respectively. When the coarse and fine filters are in operation, one of them coincides with the air inlet side of the heat exchanger. A moving shaft assembly is located between rollers one and two. This invention reduces system resistance and energy consumption through pneumatic lint removal and adaptive filtration, and reduces mechanical friction and heat loss through a self-lubricating and self-cleaning cooling structure, significantly improving the energy efficiency ratio and operational reliability of the heat dissipation assembly.

Description

Technical Field

[0001] This invention relates to the field of energy-saving motor technology, specifically to a heat dissipation assembly for new energy vehicles. Background Technology

[0002] In the thermal management system of new energy vehicles, the heat dissipation assembly is a key component to ensure the normal operation of the battery, motor, and electronic control system. Its core working principle is to use a fan to force air convection and remove heat from the heat exchanger.

[0003] However, in practical applications, existing heat dissipation assemblies face severe challenges in terms of energy consumption and reliability when dealing with the high incidence of cotton wool in spring and during long-term operation.

[0004] CN115585149A discloses a high-safety cooling fan, belonging to the field of cooling fan technology. It includes several fan bodies, with a heat dissipation pipe fixedly connected to the lower end of each fan body. A main heat dissipation frame is fixedly connected to the heat dissipation pipe, and a protective box is fixedly connected to the upper end of the main heat dissipation frame. A data receiving terminal is installed inside the protective box, with the fan bodies located below the data receiving terminal. An opening door is rotatably connected to the protective box, and several support columns are fixedly connected to the lower end of the protective box. The fan body includes fan blades and a motor, and the heat dissipation pipe includes a cooling pipe. The device includes a cooling platform, and the main heat dissipation frame includes a first main heat dissipation frame and a second main heat dissipation frame. A second magnetic shielding plate is fixedly connected inside the protective box. The second magnetic shielding plate is located between the data receiving terminal and the fan blades. This device can continuously dissipate heat from the cooling fan through water cooling, with high heat dissipation efficiency, reducing or eliminating the possibility of spontaneous combustion of the cooling fan. However, there are still problems such as long-term high-load operation of the fan, soaring energy consumption due to filter clogging, difficulty in removing stubborn wet lint with automatic cleaning, resulting in reliance on frequent manual disassembly and cleaning, which affects the continuity of vehicle use, and increased energy consumption due to motor maintenance issues. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a heat dissipation assembly for new energy vehicles, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a heat dissipation assembly for new energy vehicles, including a heat exchanger, an air duct shell located on the air outlet side of the heat exchanger, a fan for exhausting air, and a motor assembly, wherein a filter group is provided on the air inlet side of the heat exchanger, and the filter group is used to block seasonal lint. The filter assembly is composed of a coarse filter and a fine filter. The fine filter is used to filter cotton fibers, and the coarse filter is used to ensure ventilation. One end of the heat exchanger is provided with a first roller, and the other end of the heat exchanger is provided with a second roller. The first roller and the second roller are respectively used to wind the coarse filter screen and the fine filter screen. When the coarse filter screen and the fine filter screen are working, one of them coincides with the air inlet side of the heat exchanger. A movable shaft assembly is provided between the first and second rollers. The movable shaft assembly is used to drive the switching between the coarse and fine filter screens. The first and second rollers and the movable shaft assembly are driven synchronously by a transmission belt assembly. A deflector is provided on the bottom side of the air duct, which is used to divert part of the air inlet air force. The deflector device includes a lint removal port, which is fixed to the bottom of the air duct shell. The lint removal port is used to blow away the lint adhering to the outer surface of the fine filter screen in the opposite direction.

[0007] According to the above technical solution, the gust device further includes an auxiliary air guiding device, which includes a gust deflector plate; The bottom side of the air duct shell is rotatably connected to a deflector plate, and a torsion spring is provided at the pivot of the deflector plate. The deflector plate is in a horizontal state under the action of the torsion spring. One end of the deflector plate is fixedly connected to a deflector gear, and a rocker gear is hinged to one side of the wind-gathering shell corresponding to the deflector gear. The rocker gear meshes with the deflector gear. The coarse filter section of the filter assembly has a deflection groove, and the bottom of the deflection gear is inserted into the deflection groove.

[0008] According to the above technical solution, a windproof strip is attached to the side of the deflector plate near the fan. Under the deflection of the swing gear and the deflector gear, the windproof strip is attached to the bottom inner wall of the air duct shell.

[0009] According to the above technical solution, the motor set includes a motor shaft, a stator, a rotor, bearings, and a housing. The rotor is fixed on the motor shaft, the stator is fixed on the motor set, and bearings are provided at both ends of the motor shaft. The bearings are disposed on the housing. The motor unit is equipped with a lubrication device at the position of the bearing. The lubrication device is used to maintain the working condition of the bearing. The bearing has an opening on the side facing the rotor. A cooling unit is provided on the side of the motor unit away from the heat exchanger, and the cooling unit is used to maintain the working state of the motor unit.

[0010] According to the above technical solution, the lubrication device includes an oil outlet, an oil baffle shell, and an oil baffle plate. A blind hole is provided in the center of the motor shaft. The oil outlet communicates with the blind hole, and the lubricating oil is input from the open end of the blind hole. An oil baffle is provided on the outer side of the motor shaft corresponding to the oil outlet, the bearing is located on the inner side of the oil baffle, an oil baffle plate is provided on the oil baffle corresponding to the opening side of the bearing, and the oil outlet is connected to the opening side of the bearing.

[0011] According to the above technical solution, the cooling group includes an exhaust fan blade and a mounting plate. The exhaust fan blade is fixed on the motor shaft and rotates synchronously with the motor shaft. The mounting plate is fixed on the side of the outer shell away from the heat exchanger. The mounting plate and the outer shell are provided with through exhaust holes. As the motor shaft rotates, the exhaust fan blades generate airflow through the exhaust vents towards the fan side within the housing.

[0012] According to the above technical solution, a disc filter screen is rotatably connected to the side of the mounting plate away from the exhaust fan blades, and a backflow duct is fixedly connected to one side of the outer shell. The backflow duct overlaps with the airflow channel area of ​​the fan. The backflow duct has a dust removal duct. The disc filter screen covers the exhaust hole and the dust removal duct of the backflow duct. The disc filter screen is used to filter cooling air. The mounting plate has a backflow hole corresponding to the dust removal air duct of the backflow air duct; A movable turntable is fixedly connected to the outside of the motor shaft, and the movable turntable is connected to the disc filter screen in a driving connection.

[0013] According to the above technical solution, the air inlet side of the backwash duct is provided with an inclined surface, and the inclined surface is covered with a backwash filter screen, which is used to filter air. The inclined surface is designed to prevent large floating debris from clogging the dust removal duct of the backwash air duct.

[0014] According to the above technical solution, the moving shaft assembly includes a drive component and an oil injection component. The drive component includes a moving gear and a shaft sleeve. The shaft sleeve is fixedly sleeved on both sides of the moving gear. The shaft sleeve is in contact with the inner side of the filter assembly. A stepper motor for driving the rotation of the moving gear is provided at the bottom of the heat exchanger at the position corresponding to the moving gear.

[0015] According to the above technical solution, the oil injection assembly includes an accumulator shaft, a threaded shaft, and an oil outlet. The accumulator shaft is fixed at the shaft center of the moving gear. A threaded pressure cylinder is provided inside the shaft sleeve. The threaded pressure cylinder is sleeved on the outside of the accumulator shaft. A slider is radially slidably connected to one end of the accumulator shaft. A continuous groove corresponding to the slider is opened on the inner side of the threaded pressure cylinder. A pressure ring is provided on one side of the threaded cylinder, and a pressure accumulator spring is provided between the slider and the pressure ring; The oil outlet head is fixed on one side of the heat exchanger and inserted into the shaft. The shaft of the oil outlet head is hollow. An oil guide groove is provided on one side of the oil outlet head located in the shaft, and the oil guide groove is connected to the shaft of the oil outlet head. A threaded shaft is fixedly connected to the side of the oil guide groove near the moving gear. A plurality of oil guide needles are fixedly connected to one end plate of the threaded shaft, and the oil guide needles are in communication with the oil guide groove. An oil pipe is fitted onto the threaded shaft, and the oil guide needle is used to pierce the oil pipe and guide the lubricating oil in the oil pipe into the oil guide groove. The threaded cylinder is threadedly connected to the threaded shaft, the pressure ring is used to squeeze the oil pipe, and the pressure ring is slidably sleeved on the threaded shaft; The oil outlet is connected to the blind hole of the motor shaft.

[0016] This invention provides a heat dissipation assembly for new energy vehicles. It has the following beneficial effects: This invention addresses the issue of increased wind resistance and fan load caused by clogging of the fine filter screen during the non-cotton season. It utilizes the large mesh size of the coarse filter screen covering the heat exchanger's air inlet to ensure maximum ventilation. During the summer when cotton lint is floating, a fine filter screen is switched on to block it. Simultaneously, a rotating shaft assembly drives the fine filter screen to reciprocate. This, combined with the lint-clearing port of the deflector device, utilizes a portion of the airflow within the fan housing to blow air backwards from the inside out onto the surface of the fine filter screen. This solves the problem of high permeability of the filter screen due to clogging, and maintains high permeability of the filter screen through the lint-clearing process performed by the rotating shaft assembly and the lint-clearing port. This significantly reduces the energy consumption of the fan during exhaust and improves the overall energy efficiency ratio of the heat dissipation system. In this invention, when switching to the fine filter mode, the taut fine filter lifts the swing arm gear, which drives the deflector gear to rotate. This, in turn, drives the deflector plate to overcome the resistance of the torsion spring and deflect downwards, forming a V-shaped air guiding area with the bottom surface of the air duct shell. Combined with the lint-clearing port with a gradually narrowing cross section, this significantly increases the blowing speed and kinetic energy, achieving the best lint-clearing effect with minimal airflow loss. This avoids the decrease in heat exchange efficiency and power waste caused by filter clogging. This invention uses a motor shaft to drive an exhaust fan to cool the motor, while a rotating disc drives a circular filter screen to rotate, causing it to periodically pass through a backflow duct. The suction force of the main fan blows away accumulated dust in the opposite direction, thus preventing blockage of the motor's air inlet and ensuring that the motor always operates at a suitable temperature, avoiding increased resistance and reduced efficiency due to motor overheating. This invention uses a rotating shaft assembly to drive a pressure accumulator shaft to rotate during operation. Through a threaded connection, the oil is squeezed through an oil pipe to deliver lubricating oil at a constant pressure to the motor bearing. This ensures that the motor is always in a low-friction condition and avoids increased energy consumption due to insufficient oil or excessive oil pressure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This invention as a whole Figure 1 A schematic diagram of the structure on the dorsal side; Figure 3This is a half-sectional view of the overall motor unit of the present invention; Figure 4 This invention as a whole Figure 3 A schematic diagram of the structure of area A; Figure 5 This invention as a whole Figure 3 A schematic diagram of the dorsal side structure; Figure 6 This invention as a whole Figure 3 A schematic diagram of the structure of area B; Figure 7 This is a half-sectional structural diagram of the overall moving shaft assembly of the present invention; Figure 8 This is a partial unfolded structural diagram of the overall moving shaft assembly of the present invention; Figure 9 This invention as a whole Figure 2 A structural diagram of area C; Figure 10 This is a schematic diagram of the overall wind turbine shell of the present invention; Figure 11 This is a half-sectional structural diagram of the overall wind-gathering shell of the present invention; Figure 12 This invention as a whole Figure 10 A schematic diagram of the structure of region D; Figure 13 This invention as a whole Figure 11 A schematic diagram of the structure of region E.

[0018] In the diagram: 1. Heat exchanger; 2. Filter assembly; 3. Wind deflector; 301. Wind deflector gear; 302. Swing gear; 303. Fluff removal inlet; 304. Wind deflector plate; 305. Windproof rubber strip; 4. Fan; 5. Motor assembly; 6. Oscillator slot; 7. Cooling assembly; 701. Exhaust fan blades; 702. Exhaust vent; 703. Backflow duct; 704. Backflow filter; 705. Backflow vent; 706. Disc filter; 707. Rotary disc; 708. Mounting plate; 8. Lubrication device; 801. Oil outlet; 802. Oil baffle; 803. Oil baffle plate; 9. Moving shaft assembly; 901. Moving gear; 902. Shaft sleeve; 903. Accumulator shaft; 904. Slider; 905. Threaded pressure cylinder; 906. Accumulator spring; 907. Pressure ring; 908. Oil pipe; 909. Threaded shaft; 910. Oil outlet head; 911. Oil guide needle; 912. Oil guide groove; 10. Rotor; 11. Stator; 12. Bearing; 13. Motor shaft; 14. Reel one; 15. Reel two; 16. Wind shield. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Please see Figure 1-13 A heat dissipation assembly for new energy vehicles includes a heat exchanger 1, an air duct 16 located on the air outlet side of the heat exchanger 1, a fan 4 for exhausting air, and a motor unit 5. A filter group 2 is provided on the air inlet side of the heat exchanger 1, and the filter group 2 is used to block seasonal lint. Filter group 2 is composed of a coarse filter and a fine filter. The fine filter is used to filter cotton wool, and the coarse filter is used to ensure ventilation. One end of the heat exchanger 1 is provided with a first roller 14, and the other end of the heat exchanger 1 is provided with a second roller 15. The first roller 14 and the second roller 15 are used to wind the coarse filter screen and the fine filter screen respectively. When the coarse filter screen and the fine filter screen are working, one of them coincides with the air inlet side of the heat exchanger 1. A movable shaft group 9 is provided between the first roller 14 and the second roller 15. The movable shaft group 9 is used to drive the switching between the coarse filter and the fine filter. The first roller 14, the second roller 15, and the movable shaft group 9 are driven synchronously through a transmission belt group. A deflector 3 is provided on the bottom side of the air duct 16. The deflector 3 is used to divert part of the air inlet air force. The deflector device 3 includes a lint removal port 303, which is fixed to the bottom of the air duct shell 16. The lint removal port 303 is used to blow back the lint adhering to the outer surface of the fine filter screen.

[0021] Furthermore, spool 14 is used to wind the coarse filter screen, and spool 2 15 is used to wind the fine filter screen.

[0022] Furthermore, the lint removal port 303 is located on the air outlet side of the heat exchanger 1 to avoid the airflow during vehicle movement affecting the lint removal from the surface of the fine filter.

[0023] In use, during the summer when cotton fibers float, the rotating shaft assembly 9 controls the rotation of the first roller 14 and the second roller 15, causing the first roller 14 to wind up the coarse filter screen, so that the air inlet of the heat exchanger 1 is covered by the fine filter screen, and the cotton fibers generated by the car are blocked and filtered. During this process, the rotating shaft assembly 9 also drives the fine filter screen to move back and forth, and through the lint removal port 303, a part of the airflow from the inside of the air duct shell 16 is drawn from the outside of the fine filter screen to clean the cotton fibers on the surface of the fine filter screen, so as to prevent the cotton fibers from blocking the filter assembly 2, causing the temperature of the heat exchanger 1 to rise and affecting the energy consumption of the heat dissipation assembly. In non-summer seasons, the rotating shaft assembly 9 controls the rotation of the first roller 14 and the second roller 15, causing the second roller 15 to roll up the fine filter screen, so that the air inlet of the heat exchanger 1 is covered by the coarse filter screen, ensuring the ventilation volume on the air inlet side of the heat exchanger 1.

[0024] The gust device 3 also includes an auxiliary air guide device, which includes a gust deflector plate 304; A deflector plate 304 is rotatably connected to the bottom side of the air duct shell 16. A torsion spring is provided at the pivot of the deflector plate 304, and the deflector plate 304 is in a horizontal state under the action of the torsion spring. One end of the wind deflector plate 304 is fixedly connected to the wind deflector gear 301, and the wind collector shell 16 is hinged to one side of the wind deflector gear 301 with the rocker gear 302, which meshes with the wind deflector gear 301. The coarse filter section of filter group 2 is provided with a sway groove 6, and the bottom of the sway gear 302 is inserted into the sway groove 6.

[0025] Furthermore, the cross-section of the lint remover 303 gradually decreases from the air inlet side to the air outlet side.

[0026] Furthermore, as the drive shaft assembly 9 controls the winding shaft 14 to rewind, when the rocker gear 302 moves to the end of the deflection groove 6, that is, the splicing point between the coarse and fine filter screens, the rocker gear 302 is supported by the outer surface of the fine filter screen, causing the rocker gear 302 to deflect in reverse.

[0027] In use, when the moving shaft group 9 controls the rotation of the first roller 14 and the second roller 15, and makes the fine filter screen coincide with the air inlet of the heat exchanger 1, the rocker gear 302 is supported by the taut fine filter screen and drives the deflector gear 301 to rotate, so that the deflector plate 304 rotates and forms a V-shaped air guiding area with the bottom surface of the air duct shell 16, thereby increasing the air inlet force of the lint removal port 303 and increasing the air velocity of the air outlet of the lint removal port 303, thereby ensuring the cleaning effect on the lint on the surface of the fine filter screen of the filter group 2; When the moving shaft assembly 9 controls the rotation of the first roller 14 and the second roller 15, and makes the coarse filter screen coincide with the air inlet of the heat exchanger 1, the rocker gear 302 slides back into the deflection groove 6. At this time, under the action of the torsion spring, the deflector plate 304 returns to the horizontal state and reduces the wind resistance of the deflector plate 304.

[0028] A wind deflector strip 305 is attached to the side of the deflector 304 near the fan 4. Under the deflection of the deflector 304 by the rocker gear 302 and the deflector gear 301, the wind deflector strip 305 is attached to the bottom inner wall of the air duct shell 16.

[0029] Furthermore, the sealing effect of the air guiding area is improved by the wind deflector strip 305, thereby increasing the air volume of the lint removal port 303.

[0030] The motor assembly 5 includes a motor shaft 13, a stator 11, a rotor 10, a bearing 12, and a housing. The rotor 10 is fixed on the motor shaft 13, the stator 11 is fixed on the motor assembly 5, and bearings 12 are provided at both ends of the motor shaft 13. The bearings 12 are provided on the housing. A lubrication device 8 is provided at the position of the motor unit 5 corresponding to the bearing 12. The lubrication device 8 is used to maintain the working state of the bearing 12. The bearing 12 has an opening on the side facing the rotor 10. A cooling group 7 is provided on the side of the motor unit 5 away from the heat exchanger 1. The cooling group 7 is used to maintain the working state of the motor unit 5.

[0031] Furthermore, the motor unit 5 has an isolation air duct inside its housing, and the exhaust port 702 is connected to the heat-generating area inside the motor.

[0032] The lubrication device 8 includes an oil outlet 801, an oil baffle 802, and an oil baffle 803. A blind hole is provided on the shaft of the motor shaft 13. The oil outlet 801 is connected to the blind hole, and the lubricating oil is input from the open end of the blind hole. An oil baffle 802 is provided on the outer side of the motor shaft 13 corresponding to the oil outlet 801. The bearing 12 is located on the inner side of the oil baffle 802. An oil baffle plate 803 is provided on the oil baffle 802 corresponding to the opening side of the bearing 12. The oil outlet 801 is connected to the opening side of the bearing 12.

[0033] In use, lubricating oil is introduced into the blind hole of the motor shaft 13. When the motor shaft 13 drives the fan 4 to rotate, the lubricating oil in the motor shaft 13 is subjected to centrifugal force and enters the area under the jurisdiction of the bearing 12 and the oil baffle 803 along the oil outlet 801, thereby ensuring the lubrication effect of the bearing 12 during operation and improving the working life of the bearing 12.

[0034] The cooling unit 7 includes an exhaust fan blade 701 and a mounting plate 708. The exhaust fan blade 701 is fixed on the motor shaft 13 and rotates synchronously with the motor shaft 13. The mounting plate 708 is fixed on the side of the outer casing away from the heat exchanger 1. The mounting plate 708 and the outer casing are provided with through exhaust holes 702. As the motor shaft 13 rotates, the exhaust fan blade 701 generates airflow through the exhaust port 702 toward the fan 4 within the housing.

[0035] A disc filter 706 is rotatably connected to the side of the mounting plate 708 away from the exhaust fan blade 701. A backflow duct 703 is fixedly connected to one side of the housing. The backflow duct 703 overlaps with the airflow channel area of ​​the fan 4. The backflow duct 703 has a dust removal duct. The disc filter 706 covers the exhaust hole 702 and the dust removal duct of the backflow duct 703. The disc filter 706 is used to filter the cooling air. The mounting plate 708 has a backflow hole 705 in the dust removal duct of the backflow duct 703; A rotating disk 707 is fixedly connected to the outer side of the motor shaft 13, and the rotating disk 707 is connected to the disc filter screen 706 in a transmission connection.

[0036] Furthermore, the rotating disk 707 can drive the disc filter 706 to rotate through friction, thereby preventing the disc filter 706 from rotating too fast.

[0037] The air inlet side of the backwash duct 703 is provided with an inclined surface, and a backwash filter 704 is covered on the inclined surface. The backwash filter 704 is used to filter the air. The inclined surface is designed to prevent large floating debris from clogging the dust removal duct of the backwash duct 703.

[0038] When in use, when the motor shaft 13 rotates, the airflow from the side of the motor assembly 5 housing away from the heat exchanger 1 is circulated through the exhaust fan blades 701 towards the side of the motor assembly 5 housing closer to the heat exchanger 1 via the exhaust holes 702, thereby controlling the operating temperature of the motor assembly 5.

[0039] Meanwhile, the air entering the exhaust vent 702 is filtered by the disc filter 706 to ensure that no impurities enter the motor unit 5 and to ensure the stability of the motor unit 5 operation.

[0040] Simultaneously, the rotation of the motor shaft 13 also drives the rotating disk 707 to rotate. The rotating disk 707 drives the disc filter 706 to rotate through the rubber protrusions on the outside. As the disc filter 706 rotates, it comes into contact with the dust removal air duct of the backwash air duct 703. The suction force generated by the rotation of the fan 4 driven by the motor shaft 13 is guided by the backwash air duct 703 to blow the mounting plate 708 in a certain direction. This ensures the ventilation effect of the mounting plate 708 during long-term operation and avoids the motor unit 5 from overheating, which would affect the energy consumption of the motor unit 5.

[0041] The moving shaft assembly 9 includes a drive assembly and an oil injection assembly. The drive assembly includes a moving gear 901 and a shaft sleeve 902. The shaft sleeve 902 is fixedly sleeved on both sides of the moving gear 901. The shaft sleeve 902 is in contact with the inner side of the filter assembly 2. A stepper motor for driving the rotation of the moving gear 901 is provided at the bottom of the heat exchanger 1 at the position corresponding to the moving gear 901.

[0042] Furthermore, hinged platforms are provided on both sides of the shaft cylinder 902, and spring plates are provided on the hinged platforms. The shaft cylinder 902 is supported by the spring plates, which keeps the filter group 2 in a taut state.

[0043] In use, the stepper motor drives the gear 901 to rotate, which in turn drives the shaft cylinder 902 to rotate. The friction between the shaft cylinder 902 and the filter group 2 drives the filter group 2 to slide.

[0044] The oil injection assembly includes an accumulator shaft 903, a threaded shaft 909, and an oil outlet 910. The accumulator shaft 903 is fixed at the shaft center of the moving gear 901. A threaded pressure cylinder 905 is provided inside the shaft sleeve 902. The threaded pressure cylinder 905 is sleeved on the outside of the accumulator shaft 903. A slider 904 is radially slidably connected to one end of the accumulator shaft 903. A continuous groove corresponding to the slider 904 is opened on the inner side of the threaded pressure cylinder 905. A pressure ring 907 is provided on one side of the threaded pressure cylinder 905, and a pressure accumulator spring 906 is provided between the slider 904 and the pressure ring 907; The oil outlet 910 is fixed on one side of the heat exchanger 1. The oil outlet 910 is inserted into the shaft cylinder 902. The shaft of the oil outlet 910 is hollow. An oil guide groove 912 is opened on one side of the oil outlet 910 located in the shaft cylinder 902. The oil guide groove 912 is connected to the shaft of the oil outlet 910. A threaded shaft 909 is fixedly connected to the side of the oil guide groove 912 near the moving gear 901. Multiple oil guide needles 911 are fixedly connected to one end plate of the threaded shaft 909, and the oil guide needles 911 are connected to the oil guide groove 912. An oil pipe 908 is fitted on the threaded shaft 909. An oil guide needle 911 is used to pierce the oil pipe 908 and guide the lubricating oil in the oil pipe 908 into the oil guide groove 912. The threaded cylinder 905 is threadedly connected to the threaded shaft 909, and the pressure ring 907 is used to compress the oil pipe 908. The pressure ring 907 is slidably sleeved on the threaded shaft 909. The oil outlet 910 is connected to the blind hole of the motor shaft 13.

[0045] Furthermore, a folding spring is provided on the side of the slider 904 near the shaft end of the accumulator shaft 903. As the accumulator shaft 903 rotates with the drive gear 901, the slider 904, supported by the folding spring, engages with the continuous groove on the inner side of the threaded pressure cylinder 905, thereby synchronously driving the threaded pressure cylinder 905 to rotate synchronously with the accumulator shaft 903. This allows the threaded pressure cylinder 905 to squeeze the pressure ring 907 and the oil pipe 908 under the cooperation of the threaded surface of the threaded shaft 909. When the reaction force applied by the oil pipe 908 to the threaded pressure cylinder 905 is large, the slider 904, supported by the continuous slot and under the action of the folding spring, slides radially back and forth on the accumulator shaft 903.

[0046] Furthermore, oil pipe 908 is filled with lubricating oil.

[0047] In use, the oil pipe 908, supported by the pressure ring 907 and the accumulator spring 906, squeezes the lubricating oil in the oil pipe 908 into the oil guide groove 912 and the oil outlet 910 through the oil guide needle 911, and then delivers it to the blind hole of the motor shaft 13 through the pipeline. It can ensure that the lubricating oil in the pipeline maintains a certain oil pressure. As the lubricating oil in the pipeline is gradually delivered to the bearing 12, the lubricating oil in the oil pipe 908 gradually decreases. At this time, the pressure applied by the accumulator spring 906 to the pressure ring 907 decreases. At this time, when the moving gear 901 and the shaft cylinder 902 drive the first roller 14, the second roller 15, and the filter group 2 to work, the accumulator shaft 903 drives the threaded pressure cylinder 905 to rotate via the slider 904, and squeezes the accumulator spring 906 under the threaded engagement with the threaded shaft rod 909, so that the accumulator spring 906 is compressed and stores energy. When the reaction force of the accumulator spring 906 on the threaded pressure cylinder 905 is large, the accumulator shaft 903 cannot drive the threaded pressure cylinder 905 to rotate, and the accumulator shaft 903 spins idly inside the threaded pressure cylinder 905. The operation of the moving gear 901 and the shaft cylinder 902 maintains the oil pressure in the oil pipe 908 and pipelines, ensuring the lubrication effect on the bearing 12.

[0048] Working principle: During the summer season when cotton fibers float, the stepper motor drives the gear 901 to rotate, and through the friction between the shaft cylinder 902 and the filter group 2, it drives the first roller 14 and the second roller 15 to rotate, unfolding the fine filter screen and covering the air inlet of the heat exchanger 1, while the coarse filter screen is rolled up. At this time, the fine filter effectively blocks the cotton lint from entering. At the same time, the moving shaft assembly 9 drives the fine filter to move back and forth. The deflector plate 304 in the deflector device 3 deflects after the swing gear 302 is supported by the fine filter, forming a V-shaped air guiding area with the bottom surface of the air duct shell 16. The windproof rubber strip 305 adheres to the inner wall to enhance the seal, allowing some airflow to be blown at high speed from the inside to the outside of the fine filter through the lint removal port 303 to remove the cotton lint adhering to the surface and prevent blockage from affecting the heat exchange efficiency. In non-summer seasons, the drive shaft assembly 9 switches to the coarse filter working position, the second reel 15 winds up the fine filter, and the first reel 14 releases the coarse filter to cover the air inlet to ensure ventilation. At this time, the swing gear 302 slides into the swing groove 6, and the deflector 304 returns to the horizontal state under the action of the torsion spring to reduce wind resistance and turn off the lint removal function. When the motor unit 5 is running, the motor shaft 13 drives the fan 4 to draw air out, so that the air is discharged through the outlet side of the heat exchanger 1 to achieve heat dissipation. At the same time, the motor shaft 13 synchronously drives the exhaust fan blades 701 to form an airflow from the exhaust hole 702 toward the fan 4 inside the outer casing of the motor unit 5, which cools the heat-generating area inside the motor. The cooling air enters after being filtered by the disc filter screen 706 to prevent impurities from entering. The rotating disc 707 drives the disc filter 706 to rotate slowly through friction, causing it to periodically pass through the dust removal duct of the backwash duct 703. The fan 4 uses suction power to blow back the mounting plate 708 and the surface of the filter to remove accumulated dust and maintain long-term ventilation performance. At the same time, the inclined surface of the air inlet side of the backwash duct 703 works in conjunction with the backwash filter 704 to prevent large particles from clogging the filter.

[0049] In terms of lubrication, lubricating oil is input through the blind hole of the motor shaft 13 and enters the bearing 12 area through the oil outlet 801 under the action of centrifugal force. The oil baffle 802 and the oil baffle 803 form a closed lubrication cavity to ensure continuous lubrication of the bearing 12. In the oil injection assembly, when the moving gear 901 rotates, the accumulator shaft 903 drives the threaded pressure cylinder 905 to rotate through the cooperation of the slider 904 and the continuous slot. This causes the threaded pressure cylinder 905 to move axially on the threaded shaft 909, thereby squeezing the pressure ring 907 and the oil pipe 908, and pressing the lubricating oil into the oil guide groove 912 and the oil outlet 910 through the oil guide needle 911 to maintain the oil pressure in the pipeline. When the oil pressure is too high, the slider 904 slides radially under the action of the folding spring, and the accumulator shaft 903 rotates freely to achieve adaptive pressure adjustment and ensure stable lubrication.

[0050] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat dissipation assembly for new energy vehicles, comprising a heat exchanger (1), a fan housing (16) located on the air outlet side of the heat exchanger (1), a fan (4) for exhaust, and a motor assembly (5), characterized in that: The heat exchanger (1) is provided with a filter group (2) on the air inlet side, which is used to block seasonal cotton wool. The filter group (2) is composed of a coarse filter and a fine filter. The fine filter is used to filter cotton wool, and the coarse filter is used to ensure ventilation. One end of the heat exchanger (1) is provided with a first roller (14), and the other end of the heat exchanger (1) is provided with a second roller (15). The first roller (14) and the second roller (15) are respectively used to wind the coarse filter screen and the fine filter screen. When the coarse filter screen and the fine filter screen are working, one of them coincides with the air inlet side of the heat exchanger (1). A moving shaft group (9) is provided between the first (14) and the second (15) of the roller. The moving shaft group (9) is used to drive the switching between the coarse filter and the fine filter. The first (14), the second (15) of the roller, and the moving shaft group (9) are driven synchronously by a transmission belt group. The bottom side of the air duct (16) is provided with a deflector (3), which is used to divert part of the air inlet wind force. The deflector device (3) includes a lint removal port (303), which is fixed to the bottom of the air duct shell (16). The lint removal port (303) is used to blow away the lint adhering to the outer surface of the fine filter screen in the opposite direction.

2. The heat dissipation assembly for new energy vehicles according to claim 1, characterized in that: The gust device (3) also includes an auxiliary air guide device, which includes a gust deflector plate (304). The bottom side of the wind-collecting shell (16) is rotatably connected to a wind deflector plate (304), and a torsion spring is provided at the pivot of the wind deflector plate (304). The wind deflector plate (304) is in a horizontal state under the action of the torsion spring. One end of the deflector plate (304) is fixedly connected to the deflector gear (301), and the wind-collecting shell (16) is hinged to the side of the deflector gear (301) with the rocker gear (302), and the rocker gear (302) meshes with the deflector gear (301). The coarse filter section of the filter group (2) is provided with a sway groove (6), and the bottom of the sway gear (302) is inserted into the sway groove (6).

3. A heat dissipation assembly for new energy vehicles according to claim 2, characterized in that: The wind deflector (304) has a windproof strip (305) pasted on the side near the fan (4). Under the deflection of the wind deflector (304) by the rocker gear (302) and the wind deflector gear (301), the windproof strip (305) is attached to the bottom inner wall of the wind collector shell (16).

4. A heat dissipation assembly for new energy vehicles according to claim 1, characterized in that: The motor assembly (5) includes a motor shaft (13), a stator (11), a rotor (10), a bearing (12), and a housing. The rotor (10) is fixed on the motor shaft (13), and the stator (11) is fixed on the motor assembly (5). Bearings (12) are provided at both ends of the motor shaft (13), and the bearings (12) are provided on the housing. The motor unit (5) is provided with a lubrication device (8) at the position corresponding to the bearing (12). The lubrication device (8) is used to maintain the working state of the bearing (12). The bearing (12) is provided with an opening on the side facing the rotor (10). A cooling group (7) is provided on the side of the motor unit (5) away from the heat exchanger (1), and the cooling group (7) is used to maintain the working state of the motor unit (5).

5. A heat dissipation assembly for new energy vehicles according to claim 4, characterized in that: The lubrication device (8) includes an oil outlet (801), an oil baffle (802), and an oil baffle (803). A blind hole is provided on the shaft center of the motor shaft (13). The oil outlet (801) is connected to the blind hole. The lubricating oil is input from the open end of the blind hole. An oil baffle (802) is provided on the outer side of the motor shaft (13) corresponding to the oil outlet (801). The bearing (12) is located on the inner side of the oil baffle (802). An oil baffle plate (803) is provided on the opening side of the oil baffle (802) corresponding to the bearing (12). The oil outlet (801) is connected to the opening side of the bearing (12).

6. A heat dissipation assembly for new energy vehicles according to claim 4, characterized in that: The cooling unit (7) includes an exhaust fan blade (701) and a mounting plate (708). The exhaust fan blade (701) is fixed on the motor shaft (13) and rotates synchronously with the motor shaft (13). The mounting plate (708) is fixed on the side of the outer shell away from the heat exchanger (1). The mounting plate (708) and the outer shell are provided with through exhaust holes (702). The exhaust fan blades (701) generate airflow through the exhaust holes (702) towards the fan (4) as the motor shaft (13) rotates.

7. A heat dissipation assembly for new energy vehicles according to claim 6, characterized in that: A disc filter (706) is rotatably connected to the side of the mounting plate (708) away from the exhaust fan blade (701). A backflow duct (703) is fixedly connected to one side of the housing. The backflow duct (703) overlaps with the airflow channel area of ​​the fan (4). The backflow duct (703) has a dust removal duct. The disc filter (706) covers the exhaust hole (702) and the dust removal duct of the backflow duct (703). The disc filter (706) is used to filter cooling air. The mounting plate (708) has a backflow hole (705) in the dust removal duct of the backflow duct (703). A rotating disk (707) is fixedly connected to the outside of the motor shaft (13), and the rotating disk (707) is connected to the disc filter screen (706) in a transmission connection.

8. A heat dissipation assembly for new energy vehicles according to claim 7, characterized in that: The air inlet side of the backwash duct (703) is provided with an inclined surface, and a backwash filter (704) is covered on the inclined surface. The backwash filter (704) is used to filter air. The inclined surface is designed to prevent large floating debris from clogging the dust removal duct of the backwash duct (703).

9. A heat dissipation assembly for new energy vehicles according to claim 6, characterized in that: The moving shaft assembly (9) includes a drive assembly and an oil injection assembly. The drive assembly includes a moving gear (901) and a shaft sleeve (902). The shaft sleeve (902) is fixedly sleeved on both sides of the moving gear (901). The shaft sleeve (902) is in contact with the inner side of the filter assembly (2). A stepper motor for driving the rotation of the heat exchanger (1) is provided at the bottom of the heat exchanger (1) at the position corresponding to the moving gear (901).

10. A heat dissipation assembly for new energy vehicles according to claim 9, characterized in that: The oil injection assembly includes an accumulator shaft (903), a threaded shaft (909), and an oil outlet (910). The accumulator shaft (903) is fixed at the shaft center of the moving gear (901). A threaded pressure cylinder (905) is provided inside the shaft sleeve (902). The threaded pressure cylinder (905) is sleeved on the outside of the accumulator shaft (903). A slider (904) is radially slidably connected to one end of the accumulator shaft (903). A continuous groove corresponding to the slider (904) is opened on the inner side of the threaded pressure cylinder (905). A pressure ring (907) is provided on one side of the threaded cylinder (905), and a pressure accumulator spring (906) is provided between the slider (904) and the pressure ring (907). The oil outlet head (910) is fixed on one side of the heat exchanger (1). The oil outlet head (910) is inserted into the shaft cylinder (902). The shaft of the oil outlet head (910) is hollow. An oil guide groove (912) is provided on one side of the oil outlet head (910) located on the shaft cylinder (902). The oil guide groove (912) is connected to the shaft of the oil outlet head (910). A threaded shaft (909) is fixedly connected to the side of the oil guide groove (912) near the moving gear (901). A plurality of oil guide needles (911) are fixedly connected to one end plate of the threaded shaft (909), and the oil guide needles (911) are connected to the oil guide groove (912). An oil pipe (908) is sleeved on the threaded shaft (909), and the oil guide needle (911) is used to pierce the oil pipe (908) and guide the lubricating oil in the oil pipe (908) into the oil guide groove (912); The threaded cylinder (905) is threadedly connected to the threaded shaft (909), and the pressure ring (907) is used to compress the oil pipe (908). The pressure ring (907) is slidably sleeved on the threaded shaft (909). The oil outlet (910) is connected to the blind hole of the motor shaft (13).

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