A drive axle of a new energy vehicle double-motor drive system

Abstract

The application discloses a driving axle of a new energy automobile double-motor driving system and relates to the technical field of driving axles. In the driving process, due to different environments, impurities in the air enter the inside of the driving axle, affecting the transmission process inside the driving axle. The driving axle of the new energy automobile double-motor driving system is characterized in that, through cooperation of the arc-shaped clamping strips and the arc-shaped inclined plates, the entering air is guided in the process of entering the outside air, so that the air flows along the inclined surfaces of the arc-shaped inclined plates, and meanwhile, the gaps between the arc-shaped inclined plates are used to enter the inside. Meanwhile, when the air flows through the gaps between the arc-shaped inclined plates, the arc-shaped clamping strips increase the tortuosity of the gap flow space, so that large dust particles in the air are blocked by the arc-shaped clamping strips and cannot enter the inside. In cooperation with the filtering effect of the hollow plates, the driving process of the automobile is ensured to have the heat dissipation effect, and meanwhile, foreign matters cannot enter the inside, so as to affect the internal transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drive axle, in particular to a drive axle of a new energy vehicle double-motor drive system. BACKGROUND

[0002] The new energy vehicle refers to a vehicle adopting a new power system, which is completely or mainly driven by a new energy source, has the characteristics of energy saving and environmental protection, is driven by the electric energy stored in a battery pack, and is powered by an electric motor.

[0003] During the operation of the drive axle, air slots are opened for heat dissipation, but during driving, impurities in the air enter the interior of the drive axle due to different environments, affecting the transmission process inside the drive axle. SUMMARY

[0004] To achieve the above purpose, the present application is realized by the following technical scheme:

[0005] A drive axle of a new energy vehicle double-motor drive system, comprising:

[0006] A housing, a controller is fixedly installed on the top of the housing, and a fixed block is fixedly installed on both sides of the housing;

[0007] A motor, which is symmetrically installed inside the housing along the center position of the housing, the output end of the motor is drivingly installed with a differential, and the end away from the motor of the differential is drivingly installed with a transmission shaft;

[0008] A locking mechanism, which is located inside the housing and installed between the motors;

[0009] A heat dissipation mechanism, which is symmetrically installed on the outside of the housing along the center position of the housing;

[0010] The top of the shell is symmetrically provided with a fan-shaped groove, and an arc-shaped frame is fixedly installed at the fan-shaped groove of the shell, the inner wall of the arc-shaped frame is fixedly installed with a hollow plate, the outer side of the hollow plate is uniformly provided with a hole groove, the both sides of the bottom of the arc-shaped frame are fixedly installed with a side block, the arc-shaped frame is fixedly installed with an arc-shaped plate between the side blocks, the arc-shaped plate is uniformly installed along the axial direction, the bottom end of the arc-shaped plate is inclined downward, and there is a gap between the arc-shaped plates, through the cooperation of the arc-shaped clamping strip and the arc-shaped plate, the entering air is guided in the process of entering, so that the air flows along the inclined surface of the arc-shaped plate, and the gap between the arc-shaped plates enters the inside, and when the air flows through the gap between the arc-shaped plates, the arc-shaped clamping strip increases the tortuosity of the gap flow space, so that the large dust particles in the air are blocked by the arc-shaped clamping strip and cannot enter the inside, and the filtering effect of the hollow plate is combined, so that in the process of driving of the automobile, the heat dissipation effect is ensured, and the foreign matters in the outside cannot enter the inside to affect the internal transmission, and the bottom end of the arc-shaped plate is fixedly installed with an arc-shaped clamping strip.

[0011] The gap exists between the arc-shaped clamping strip and the arc-shaped plate of the top, the arc-shaped plate is located below the hollow plate, the output ends of the motors are connected with the differential transmission, and the non-output ends of the motors are connected through the locking mechanism, the number of the controllers is two, and the controllers are electrically connected with the motors.

[0012] Preferably, the locking mechanism comprises a cavity cover, the cavity cover is fixedly installed in the shell, bearings are fixedly installed at both ends of the inner wall of the cavity cover, clamping shafts are rotatably installed on the inner walls of the bearings, clamping gears are connected to one end of the clamping shafts close to the motors, tooth cylinders are engaged with the outer sides of the clamping gears, one end of the inner wall of the tooth cylinder close to the motor is connected with the non-output end of the motor, connecting flanges are arranged at one end of the clamping shafts away from the motor, inner tooth cylinders are flange-connected to one end of the clamping shafts away from the motor, tooth grooves are uniformly formed in the inner walls of the inner tooth cylinders, and the tooth grooves and the through holes are one-to-one corresponding, in the process of transmission, the wear debris at the meshing position between the inner tooth cylinder and the tooth ring is guided out of the through hole by the centrifugal force when rotating, so that the wear debris is separated from the meshing transmission position, the accumulation of the wear debris at the meshing position is avoided, the wear between the tooth ring and the inner tooth cylinder is more likely to occur when meshing, and the through holes are uniformly formed in the outer sides of the inner tooth cylinders and correspond to the tooth grooves one-to-one.

[0013] Preferably, the inner wall of the cavity cover is fixedly connected with a sealing cover, the sealing cover is symmetrically installed along the central position of the axis of the cavity cover, and the opposite surfaces of the sealing cover are tightly attached to the non-opposite surfaces of the inner tooth cylinder to form a seal, the inner tooth cylinder is wrapped by the sealing cover, the inner tooth cylinder is between the sealing covers, the through holes of the inner tooth cylinder are matched, the wear and tear of the debris is limited, the debris cannot escape from the meshing position, and the debris is free in the drive axle, so that the drive axle is blocked during operation, the position of the inner tooth cylinder is limited, the meshing of the inner tooth cylinder and the gear ring during transmission is ensured, and normal operation of the drive axle is ensured, the clamping columns are installed between the inner tooth cylinders, and the gear rings are clamped on the two ends of the outer side of the clamping column.

[0014] Preferably, the heat dissipation mechanism comprises a heat dissipation hole cylinder, gas holes are uniformly arranged on the outer side of the heat dissipation hole cylinder, inner support rings are fixedly installed on the bottom of the inner wall of the heat dissipation hole cylinder, sliding columns are slidably installed on the inner wall of the inner support ring, limit discs are fixedly installed at the bottom end of the sliding column, a conical cover is fixedly connected to the top end of the sliding column, the inner diameter of the conical cover gradually increases from top to bottom, an outer cover cylinder is fixedly connected to the outer side of the conical cover, according to the different internal temperatures, the gas pressure pushes the conical cover to rise to different heights, the outer cover cylinder opens different numbers of gas holes of the heat dissipation hole cylinder, more gas holes are opened when the gas pressure is high, the high-temperature air in the interior is quickly discharged, and the gas holes are closed when the gas pressure is low, so that the gas holes are not blocked during driving, the inner wall of the outer cover cylinder and the outer side of the heat dissipation hole cylinder are slidably matched, and an outer clamping ring is fixedly connected to the bottom end of the outer cover cylinder, a plurality of grooves are uniformly arranged on the bottom end of the outer clamping ring, and the inner wall of the outer clamping ring is in contact with the outer side of the heat dissipation hole cylinder.

[0015] The application provides a drive axle of a new energy automobile double-motor driving system.

[0016] I. The drive axle of the new energy automobile double-motor driving system is matched with the arc-shaped clamping strip and the arc-shaped inclined plate, air entering from the outside is guided, the air flows along the inclined surface of the arc-shaped inclined plate, the gap between the arc-shaped inclined plates is used for entering the interior, the arc-shaped clamping strip increases the tortuosity of the gap when the air flows through the gap, large dust particles in the air are blocked by the arc-shaped clamping strip and cannot enter the interior, the filtering effect of the hollow plate is used, the driving process of the automobile is ensured, the heat dissipation effect is ensured, foreign matters cannot enter the interior, and the transmission in the interior is not affected.

[0017] II. The drive axle of the new energy vehicle double motor drive system, through the one-to-one correspondence of the gear slot and the through hole, in the transmission process, the wear debris of the meshing position between the inner tooth cylinder and the gear ring is guided out by the centrifugal force, so that the wear debris is separated from the meshing transmission position, avoiding the accumulation of the wear debris in the meshing position, causing the gear ring and the inner tooth cylinder to be more easily worn.

[0018] III. The drive axle of the new energy vehicle double motor drive system, the inner tooth cylinder is wrapped by the sealing cover, so that the inner tooth cylinder is between the sealing covers, and the through hole of the inner tooth cylinder is matched to limit the wear flying debris, avoiding the wear flying debris from being limited after being separated from the meshing position, and avoiding the wear flying debris from being separated from the meshing position, causing the drive axle to be blocked during operation, and limiting the position of the inner tooth cylinder to ensure the meshing of the gear ring during transmission and ensure the normal operation of the drive axle.

[0019] IV. The drive axle of the new energy vehicle double motor drive system, through the cooperation of the outer cover cylinder and the heat dissipation hole cylinder, according to the different internal temperatures, the air pressure pushes the conical cover to different heights, the outer cover cylinder opens different numbers of air holes of the heat dissipation hole cylinder, more air holes are opened when the air pressure is high, the high temperature air in the interior is quickly guided out, and the air holes are closed when the air pressure is low, avoiding the air holes being blocked during driving. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0021] Figure 2 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0022] Figure 3 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0023] Figure 4 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0024] Figure 5 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0025] Figure 6 The structure of the drive axle of the new energy vehicle double motor drive system of the application is shown in the structure diagram;

[0026] Figure 7 The structure of the locking mechanism of the application is shown in the structure diagram;

[0027] Figure 8 The structure of the locking mechanism of the application is shown in the structure diagram;

[0028] Figure 9 This is a schematic diagram of the heat dissipation mechanism of the present invention;

[0029] Figure 10 This is a cross-sectional view of the heat dissipation mechanism of the present invention.

[0030] In the diagram: 1. Housing; 2. Fixing block; 3. Drive shaft; 4. Controller; 5. Heat dissipation mechanism; 6. Differential; 7. Locking mechanism; 8. Motor; 9. Hollow plate; 10. Arc frame; 11. Side block; 12. Arc inclined plate; 13. Arc retaining strip; 51. Heat dissipation hole cylinder; 52. Conical cover; 53. Outer cover cylinder; 54. Outer retaining ring; 55. Sliding column; 56. Inner support ring; 57. Limiting plate; 71. Cavity cover; 72. Gear cylinder; 73. Retaining gear; 74. Retaining shaft; 75. Bearing; 76. Gear ring; 77. Sealing cover; 78. Inner gear cylinder; 79. Retaining column. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] First embodiment, such as Figures 1 to 6 As shown, the present invention provides a technical solution:

[0033] A drive axle for a dual-motor drive system in a new energy vehicle includes:

[0034] The housing 1 has a controller 4 fixedly installed on its top and fixing blocks 2 fixedly installed on both sides of the housing 1.

[0035] Motor 8 is symmetrically installed inside housing 1 along the center position of housing 1. Differential 6 is installed at the output end of motor 8. Drive shaft 3 is installed at the end of differential 6 away from motor 8.

[0036] Locking mechanism 7, which is located inside housing 1 and installed between motors 8;

[0037] Heat dissipation mechanism 5 is symmetrically installed on the outside of housing 1 along the center position of housing 1;

[0038] The top of the shell 1 is symmetrically provided with a fan-shaped slot, and the fan-shaped slot of the shell 1 is fixedly provided with an arc-shaped frame 10, the inner wall of the arc-shaped frame 10 is fixedly provided with a hollow plate 9, the outer side of the hollow plate 9 is uniformly provided with a hole slot, the two sides of the bottom of the arc-shaped frame 10 are fixedly provided with a side block 11, the motor 8 continuously works, the temperature gradually rises, the air temperature in the shell 1 rises, the pressure increases, and after the internal air pressure increases, the hot air in the inside flows out through the heat dissipation mechanism 5, and at the same time, the low-temperature air outside enters through the hollow plate 9 fixedly connected to the inner wall of the arc-shaped frame 10, the side block 11 is fixedly provided with an arc-shaped plate 12, the arc-shaped plate 12 is uniformly installed along the axial direction, the bottom end of the arc-shaped plate 12 is inclined downward and there is a gap between the arc-shaped plates 12, in the process of entering, after the low-temperature air passes through the hollow plate 9, it contacts the arc-shaped plate 12 and is guided by the arc-shaped plate 12, so that the air flows along the inclination angle of the arc-shaped plate 12, the gap between the arc-shaped plates 12 is guided into the shell 1, and at the same time, when passing through the gap between the arc-shaped plates 12, the arc-shaped strip 13 is blocked, so that the large particles of dust in the low-temperature air are blocked by the arc-shaped strip 13, the air passes through the gap and enters the inside of the shell 1, thereby reducing the temperature in the shell 1, and the bottom end of the arc-shaped plate 12 is fixedly provided with an arc-shaped strip 13.

[0039] There is a gap between the arc-shaped strip 13 and the arc-shaped plate 12 at the top, the arc-shaped plate 12 is located below the hollow plate 9, the output ends of the motor 8 are in transmission connection with the differential 6, and the non-output ends of the motor 8 are connected through the locking mechanism 7, the number of the controller 4 is two, and the controller 4 is electrically connected with the motor 8.

[0040] The second embodiment is based on the first embodiment, please refer to Figures 7 to 8 As shown in FIG. 8, the locking mechanism 7 comprises a cavity cover 71 fixedly installed in the shell 1, bearings 75 fixedly installed at both ends of the inner wall of the cavity cover 71, a clamping shaft 74 rotatably installed on the inner wall of the bearing 75, a clamping gear 73 clamped on one end of the clamping shaft 74 close to the motor 8, a tooth cylinder 72 meshing with the outer side of the clamping gear 73, the non-output end of the motor 8 clamped to one end of the inner wall of the tooth cylinder 72 close to the motor 8, and the non-output end of the rotating shaft of the rotor of the motor 8 clamped to the tooth cylinder 72. When a single motor 8 works, in the process of rotating the rotating shaft, the output end outputs mechanical force outward through the differential 6, and the non-output end is clamped to the tooth cylinder 72 and the clamping gear 73, so that the clamping gear 73 drives the inner tooth cylinder 78 to rotate through the clamping shaft 74. One end of the clamping shaft 74 away from the motor 8 is provided with a connecting flange, and the other end of the clamping shaft 74 away from the motor 8 is flange-connected with the inner tooth cylinder 78. The inner wall of the inner tooth cylinder 78 is uniformly provided with a tooth groove, and the outer side of the inner tooth cylinder 78 is uniformly provided with a through hole corresponding to the tooth groove.

[0041] The inner wall of the cavity cover 71 is fixedly connected with a sealing cover 77, the sealing cover 77 is symmetrically installed at the central position of the axis of the cavity cover 71, and the opposite surfaces of the sealing cover 77 are tightly fitted with the non-opposite surfaces of the inner tooth cylinders 78 to form a seal, the clamping columns 79 are installed between the inner tooth cylinders 78, by rotating one side of the inner tooth cylinder 78, cooperating the meshing of the tooth ring 76 and the inner tooth cylinder 78 and the clamping of the tooth ring 76 and the clamping column 79, when one side of the inner tooth cylinder 78 rotates, the other side of the inner tooth cylinder 78 is driven to rotate, the non-working motor 8 rotor is driven to rotate, the transmission shaft 3 is driven to rotate by the other side of the differential mechanism 6 to output mechanical force outward, at the same time, in the process of continuous meshing transmission of the tooth ring 76 and the inner tooth cylinder 78, the tooth ring 76 and the inner tooth cylinder 78 are continuously worn, at this time, the worn metal debris is centrifuged to pass through the through hole of the inner tooth cylinder 78, and the meshing position of the tooth ring 76 and the inner tooth cylinder 78 is left, the two ends of the clamping column 79 are clamped with the tooth ring 76, and the clamping column 79 is meshed with the tooth groove of the inner tooth cylinder 78 through the tooth ring 76.

[0042] The third embodiment is based on the first and second embodiments, please refer to Figures 9 to 10 As shown in the figure, the heat dissipation mechanism 5 includes a heat dissipation hole cylinder 51, the outer side of the heat dissipation hole cylinder 51 is uniformly provided with air holes, and the bottom of the inner wall of the heat dissipation hole cylinder 51 is fixedly installed with an inner support ring 56, the inner wall of the inner support ring 56 is slidably installed with a sliding column 55, and the bottom end of the sliding column 55 is fixedly installed with a limiting disc 57, when the motor 8 works and generates high temperature, the high temperature and high pressure air in the shell 1 diffuses outward into the heat dissipation hole cylinder 51, and is discharged through the air holes provided on the outer side of the heat dissipation hole cylinder 51, in the process of discharging, first, the air holes at the bottom of the outer side of the heat dissipation hole cylinder 51 are discharged, the top end of the sliding column 55 is fixedly connected with a conical cover 52, the inner diameter of the conical cover 52 gradually increases from top to bottom, the outer side of the conical cover 52 is fixedly connected with an outer cover cylinder 53, the inner wall of the outer cover cylinder 53 is slidably matched with the outer side of the heat dissipation hole cylinder 51, and the bottom end of the outer cover cylinder 53 is fixedly connected with an outer clamping ring 54, when the internal temperature is too high and the pressure is large, the air holes at the bottom cannot quickly discharge the high temperature air, at this time, the air pressure surges to push the conical cover 52, so that the conical cover 52 drives the sliding column 55 to slide under the limitation of the inner support ring 56, at the same time, the conical cover 52 drives the outer cover cylinder 53 and the outer clamping ring 54 to move upwards in the process of moving, moves to different heights according to the size of the air pressure, so that the outer cover cylinder 53 opens different numbers of air holes to discharge air and dissipate heat, the bottom end of the outer clamping ring 54 is uniformly provided with a slot, and the inner wall of the outer clamping ring 54 is in contact with the outer side of the heat dissipation hole cylinder 51.

[0043] In use, the drive axle is installed in a new energy vehicle, and according to the operation of the driver, the controller 4 controls the two motors 8 inside the shell 1 to work. When small torque driving is needed, a single motor 8 is controlled to rotate, so that the motor 8 in the working state drives the output shaft of the other non-working motor 8 to rotate through the locking mechanism 7, so that the output ends of the two motors 8 drive the transmission shaft 3 to rotate through the differential 6, so that the transmission shaft 3 transmits torque to the wheels of the vehicle, and the wheels rotate to drive the vehicle to move. When large torque driving is needed, the two motors 8 work simultaneously to output torque and increase the rotating torque.

[0044] During driving, the motor 8 continuously works, the temperature gradually rises, the air temperature inside the shell 1 rises, the pressure increases, and after the internal air pressure increases, the hot air inside flows out through the heat dissipation mechanism 5. At the same time, the low-temperature air outside enters through the hollow plate 9 fixedly connected to the inner wall of the arc frame 10. In the process of entering, the low-temperature air passes through the hollow plate 9, contacts the arc inclined plate 12, and is guided by the arc inclined plate 12, so that the air flows along the inclination angle of the arc inclined plate 12. The gap between the arc inclined plates 12 is guided into the shell 1, and at the same time, when passing through the gap between the arc inclined plates 12, the arc-shaped clamping strip 13 is blocked, so that the large particles of dust in the low-temperature air are blocked by the arc-shaped clamping strip 13. The air passes through the gap into the inside of the shell 1, reducing the temperature inside the shell 1.

[0045] In the heat dissipation mechanism 5, when the motor 8 works to generate high temperature, the high-temperature and high-pressure air inside the shell 1 diffuses outward, enters the heat dissipation hole cylinder 51, and is guided out through the air holes opened on the outer side of the heat dissipation hole cylinder 51. In the process of guiding out, first, the air holes at the bottom of the outer side of the heat dissipation hole cylinder 51 are guided out. When the internal temperature is too high and the pressure is large, the air holes at the bottom cannot quickly guide the high-temperature air out quickly. At this time, the air pressure surges to push the conical cover 52, so that the conical cover 52 drives the slide column 55 to slide under the limitation of the inner support ring 56. At the same time, the conical cover 52 drives the outer cover cylinder 53 and the outer clamping ring 54 to move upwards in the moving process. According to the size of the air pressure, different heights are moved, so that the outer cover cylinder 53 opens different numbers of air holes to guide and dissipate heat.

[0046] In the locking mechanism 7, the non-output end of the rotating shaft of the rotor of the motor 8 is clamped with the gear cylinder 72. When a single motor 8 works, the non-output end of the rotating shaft rotates, and the output end outputs mechanical force to the outside through the differential gear 6. At the same time, the non-output end is clamped with the gear cylinder 72 and the clamping gear 73, so that the clamping gear 73 drives the inner gear cylinder 78 to rotate through the clamping shaft 74. The rotation of the inner gear cylinder 78 on one side drives the inner gear cylinder 78 on the other side to rotate through the meshing of the gear ring 76 and the inner gear cylinder 78 and the clamping of the gear ring 76 and the clamping column 79, so that the rotor of the motor 8 which does not work is driven to rotate through the differential gear 6 on the other side, and the transmission shaft 3 is driven to rotate and output mechanical force to the outside. At the same time, the gear ring 76 and the inner gear cylinder 78 are continuously meshed and driven, and the metal debris caused by abrasion is centrifuged and separated from the meshing position of the gear ring 76 and the inner gear cylinder 78 through the through hole of the inner gear cylinder 78.

[0047] It should be noted that the relational terms herein such as first and second, and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0048] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drive axle of a new energy vehicle double-motor drive system, characterized in that, Include: The top of the shell (1) is fixedly installed with a controller (4), and the two sides of the shell (1) are fixedly installed with a fixed block (2); The motor (8) is installed inside the shell (1) along the center position of the shell (1), the output end of the motor (8) is drivingly installed with a differential (6), and the differential (6) is drivingly installed with a transmission shaft (3) away from the motor (8); Locking mechanism (7), the locking mechanism (7) is located in the inside of the shell (1) and is installed between the motor (8); The heat dissipation mechanism (5) is installed on the outside of the shell (1) along the center position of the shell (1); The top of the shell (1) is symmetrically provided with a fan-shaped groove, and the fan-shaped groove of the shell (1) is fixedly installed with an arc frame (10), the inner wall of the arc frame (10) is fixedly installed with a hollow plate (9), the outer side of the hollow plate (9) is uniformly provided with a hole slot, the two sides of the bottom of the arc frame (10) are fixedly installed with a side block (11), the side block (11) is fixedly installed with an arc inclined plate (12), the arc inclined plate (12) is installed along the axial direction, the bottom end of the arc inclined plate (12) is inclined downward, and there is a gap between the arc inclined plates (12), the bottom end of the arc inclined plate (12) is fixedly installed with an arc clamping strip (13); The locking mechanism (7) comprises a cavity cover (71), the cavity cover (71) is fixedly installed in the shell (1), the two ends of the inner wall of the cavity cover (71) are fixedly installed with bearings (75), the inner wall of the bearing (75) is rotatably installed with a clamping shaft (74), the clamping shaft (74) is clamped with a clamping gear (73) near the motor (8), the outer side of the clamping gear (73) is engaged with a gear cylinder (72), and the inner wall of the gear cylinder (72) is clamped with the non-output end of the motor (8) near the motor (8); The heat dissipation mechanism (5) includes a heat dissipation hole cylinder (51), the outer side of the heat dissipation hole cylinder (51) is uniformly provided with air holes, and the inner wall of the heat dissipation hole cylinder (51) is fixedly installed with an inner support ring (56) at the bottom; The inner wall of the inner support ring (56) is slidingly installed with a sliding column (55), the bottom end of the sliding column (55) is fixedly installed with a limiting disc (57), and the top end of the sliding column (55) is fixedly connected with a conical cover (52), the inner diameter of the conical cover (52) gradually increases from top to bottom; The end of the clamping shaft (74) away from the motor (8) is provided with a connecting flange, and the end of the clamping shaft (74) away from the motor (8) is flange-connected with an inner gear cylinder (78), the inner wall of the inner gear cylinder (78) is uniformly provided with a gear slot, and the outer side of the inner gear cylinder (78) is uniformly provided with a through hole corresponding to the gear slot; The inner wall of the cavity cover (71) is fixedly connected with a sealing cover (77), the sealing cover (77) is symmetrically installed along the axial center position of the cavity cover (71), and the opposite surfaces of the sealing cover (77) and the non-opposite surfaces of the inner gear cylinder (78) are tightly combined to form a seal.

2. The drive axle of a dual-motor drive system of a new energy vehicle according to claim 1, characterized in that: The arc-shaped clamping strip (13) and the arc-shaped plate (12) on the top have a gap, and the arc-shaped plate (12) is located below the hollow plate (9).

3. The drive axle of the dual-motor drive system of a new energy vehicle according to claim 2, characterized in that: The output ends of the motors (8) are in transmission connection with the differential (6), the non-output ends of the motors (8) are connected through the locking mechanism (7), the number of the controllers (4) is two, and the controllers (4) are in electrical connection with the motors (8).

4. The drive axle of the dual-motor drive system of a new energy vehicle according to claim 1, characterized in that: The clamping columns (79) are installed between the inner tooth cylinders (78), the two ends of the outer side of the clamping columns (79) are clamped with the tooth rings (76), and the clamping columns (79) are meshed with the tooth grooves of the inner tooth cylinders (78) through the tooth rings (76).

5. The drive axle of a dual-motor drive system of a new energy vehicle according to claim 1, characterized in that: The outer cover cylinder (53) is fixedly connected to the outer side of the conical cover (52), the inner wall of the outer cover cylinder (53) is in sliding fit with the outer side of the heat dissipation hole cylinder (51), the bottom end of the outer cover cylinder (53) is fixedly connected with the outer clamping ring (54), the bottom end of the outer clamping ring (54) is uniformly provided with a slot, and the inner wall of the outer clamping ring (54) is in contact with the outer side of the heat dissipation hole cylinder (51).

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