New energy semitrailer driving control system and method

Abstract

The invention discloses a new energy semitrailer driving control system and method, and relates to the technical field of new energy semitrailers, the new energy semitrailer driving control system comprises a fixed frame body, an auxiliary brake assembly and a pneumatic control assembly, a motor is arranged in the fixed frame body, and a transmission belt wheel is arranged at the output end of the motor. According to the semitrailer driving control system, in the process of controlling vehicle braking, the braking time can be shortened by enabling the motor to rotate reversely to recover kinetic energy, in the reverse rotation process of the motor, the system can control the hydraulic cylinder to work, the clamping disc is pushed out to clamp the driving gear, and the braking time is shortened by clamping the driving gear. Due to the fact that the hydraulic cylinder is connected with the sleeving ring seat in a sleeving mode, and the meshing direction of the ratchet wheel and the ratchet is the rotating direction of the wheel shaft when the semitrailer runs in the forward direction, through the design, when the clamping disc is clamped to the driving gear, the speed of the wheel shaft can be rapidly reduced, and the braking effect of the semitrailer is improved. And meanwhile, damping interference cannot be caused when the wheel shaft rotates reversely for kinetic energy recovery.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy semi-trailers, and in particular to a new energy semi-trailer drive control system and method. Background Art

[0002] New energy semi-trailers refer to semi-trailers that use new energy such as electricity and hydrogen fuel cells as their power sources. Compared with traditional fuel semi-trailers, new energy semi-trailers have the advantages of environmental protection, economy, and high efficiency. New energy semi-trailers are an important development direction for future freight transportation, and their application prospects are broad. The normal driving of new energy semi-trailers is controlled by the drive control system.

[0003] During the braking process, the new energy semi-trailer drive control system will reduce the braking path by reversing the motor to recover kinetic energy. However, the kinetic energy transfer time of the semi-trailer drive through the motor, transmission belt, axle and then to the wheel is relatively long, and the kinetic energy recovery effect is relatively limited. The effect is poor when the semi-trailer is heavily loaded and traveling at a high speed.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a new energy semi-trailer drive control system and method are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a new energy semi-trailer driving control system and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy semi-trailer driving control system, comprising a fixed frame, an auxiliary brake assembly and an air control assembly, a motor is arranged inside the fixed frame, and a transmission belt is arranged at the output end of the motor, the other end of the transmission belt is connected to a wheel shaft, and fixed plates are arranged at both ends of the wheel shaft, a driving gear is fixed to the outer end of the wheel shaft, and a driven gear is arranged at the top of the driving gear, an air intake fan is connected to the axial end of the driven gear, an air inlet is provided at the outer end of the fixed frame, and a ventilation fan is provided on the inner side of the fixed frame. An air groove is provided, an exhaust port is provided at the rear end of the fixed frame, an auxiliary brake assembly is sleeved on the outer end of the wheel axle, and the auxiliary brake assembly includes a sleeve ring seat, a ball, a ratchet, a hydraulic cylinder, a locking disk and a ratchet. A ball is arranged on the inner side of the sleeve ring seat, and a ratchet is arranged on the inner side of the sleeve ring seat. A hydraulic cylinder is sleeved on the inner side of the sleeve ring seat, and a locking disk is connected to the output end of the hydraulic cylinder, a ratchet is provided on the outer end of the hydraulic cylinder, a docking frame is provided on the outer end of the fixed frame, and a terminal assembly is connected to the outer end of the docking frame, and an air control assembly is provided on the outer end of the motor.

[0007] Furthermore, the driving gear is meshed with the driven gear, and the driven gear drives the air intake fan to rotate.

[0008] Furthermore, the air inlet fan rotates to allow outside air to enter the air inlet, and the air inlet is connected to the air outlet through the ventilation groove.

[0009] Furthermore, the hydraulic cylinder pushes out the engaging disk to engage with the driving gear, and the ratchet at the outer end of the hydraulic cylinder engages with the inner ratchet of the sleeve ring seat.

[0010] Furthermore, the terminal assembly includes a docking plate, a connecting wire, a wiring terminal and a piston seat, the outer end of the docking plate is provided with a connecting wire, and the end of the docking plate away from the connecting wire is provided with a wiring terminal, and the outer end of the wiring terminal is fixed with a piston seat.

[0011] Furthermore, the docking frame and the docking plate are fixedly connected by bolts, and the outer contour of the piston seat fits the inner contour of the docking frame.

[0012] Furthermore, the air control component includes a terminal seat, a first ventilation slot, a second ventilation slot, a driven fan, a driven shaft, a first gear, a second gear, an exhaust fan and a one-way exhaust valve, a first ventilation slot is opened on the inner side of the terminal seat, and a second ventilation slot is opened inside the first ventilation slot, a driven fan is arranged inside the first ventilation slot, the shaft end of the driven fan is connected to the driven shaft, and a first gear is arranged at the outer end of the driven shaft, the outer end of the first gear is meshed with the second gear, the shaft end of the second gear is connected to the exhaust fan, and a one-way exhaust valve is arranged inside the second ventilation slot.

[0013] Furthermore, the driven fan drives the driven shaft and the first gear to rotate, and the first gear drives the exhaust fan to rotate through the second gear.

[0014] Furthermore, the exhaust fan is located inside the second ventilation slot, and the second ventilation slot is connected to the docking frame and the fixed frame.

[0015] A new energy semi-trailer driving control method, the new energy semi-trailer driving control method is applied to a new energy semi-trailer driving control system, the energy semi-trailer driving control method comprises the following steps:

[0016] S1: The axle drives the driving gear to rotate during the rotation process, and drives the air intake fan to rotate through the meshing of the driven gear, so that the outside air enters the fixed frame through the air inlet, and then passes through the ventilation slot and the air outlet and then is discharged from the fixed frame. During the circulation of the outside air, the motor body and the transmission belt can be cooled, which can effectively prevent the motor and the transmission belt from overheating.

[0017] S2: The semi-trailer driving control system shortens the braking time by making the motor rotate in the reverse direction to recover kinetic energy during the process of controlling the vehicle braking. During the process of the motor reversing, the system controls the hydraulic cylinder to work so that the engaging plate is pushed out to engage the driving gear to realize the auxiliary braking of the semi-trailer. The second hydraulic cylinder is connected to the sleeve ring seat in a sleeve connection, and the meshing direction of the ratchet wheel and the ratchet teeth is the rotation direction of the wheel axle when the vehicle is traveling forward. This makes the wheel axle decelerate quickly when the engaging plate engages the driving gear, and does not cause damping interference when the wheel axle rotates in the reverse direction to recover kinetic energy.

[0018] S3: During the heat dissipation process of the equipment, air will pass through the inside of the first ventilation slot, which makes the driven fan drive the first gear to rotate through the driven shaft, and the first gear is meshed with the second gear, so that the exhaust fan can discharge the air in the cavity between the piston seat and the terminal seat from the second ventilation slot, and the one-way exhaust valve can limit the circulation of air. Through continuous exhaust, the cavity between the piston seat and the terminal seat can be in a low-pressure state, and the low-pressure state can make the piston seat move to the low-pressure side to improve the connection stability between the terminal and the terminal seat.

[0019] The present invention provides a new energy semi-trailer driving control system and method, which has the following beneficial effects:

[0020] 1. In the process of rotation, the wheel axle of the present invention can drive the driving gear fixed thereto to rotate, and the driving gear can drive the air intake fan to rotate by meshing with the driven gear. In the process of rotation, the air intake fan can allow the outside air to enter the interior of the fixed frame through the air inlet. After the air enters the interior of the fixed frame, it can pass through the ventilation slots and the exhaust port and then be discharged from the fixed frame. In the process of the circulation of the outside air, the motor body and the transmission belt can be cooled, which can effectively prevent the temperature of the motor and the transmission belt from being too high. The cooling effect is achieved by relying on the driving kinetic energy of the equipment itself, which can avoid the need to add additional heat dissipation components to the drive control system. In addition, the kinetic energy required for the driving gear and the driven gear to mesh to drive the air intake fan to rotate is relatively small, so the design will not cause the driving kinetic energy of the semi-trailer to increase, which enables the system to achieve excellent heat dissipation effect with low energy consumption.

[0021] 2. The semi-trailer driving control system of the present invention can shorten the braking time by making the motor rotate in the opposite direction to recover kinetic energy during the process of controlling the vehicle braking. During the reverse rotation of the motor, the system can control the hydraulic cylinder to work so that the engaging plate is pushed out to engage the driving gear. By engaging the driving gear, the semi-trailer can perform auxiliary braking in addition to the braking system. Because the hydraulic cylinder and the sleeve ring seat are sleeve-connected, and the meshing direction of the ratchet and the ratchet teeth is the rotation direction of the wheel axle when the vehicle is traveling forward, through this design, the wheel axle can be quickly decelerated when the engaging plate engages the driving gear, and at the same time, it will not cause damping interference when the wheel axle rotates in the opposite direction to recover kinetic energy, which can greatly improve the braking performance of the driving control system.

[0022] 3. In the present invention, the inner contour of the docking frame fits the outer contour of the terminal seat, so that after the docking plate and the docking frame are fixed, the cavity between the piston seat and the terminal seat will form a closed space. During the heat dissipation process of the equipment, air will pass through the inside of the first ventilation groove, which enables the driven fan to rotate. During the rotation of the driven fan, the first gear will be driven to rotate through the driven shaft, and the first gear is meshed with the second gear, so that the exhaust fan can discharge the air in the cavity between the piston seat and the terminal seat from the second ventilation groove. The one-way exhaust valve can limit the circulation of air. Through continuous exhaust, the cavity between the piston seat and the terminal seat can be in a low-pressure state, and the low-pressure state can cause the piston seat to move to the low-pressure side. Because the bolt connection between the docking plate and the docking frame is very easy to loosen due to the vibration of the semi-trailer during long-term driving, thereby causing loosening and poor connection between the terminal and the terminal seat, the design of the air control component can greatly improve the stability between the two through auxiliary fixation. Through this design, the operating stability of the drive control system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a new energy semi-trailer drive control system according to the present invention;

[0024] Figure 2 This is a rear-view overall structural schematic diagram of a new energy semi-trailer drive control system of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall cross-sectional structure of a new energy semi-trailer drive control system of the present invention;

[0026] Figure 4 This is a schematic diagram of the hydraulic cylinder structure of a new energy semi-trailer drive control system of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a gas control component of a new energy semi-trailer drive control system of the present invention;

[0028] Figure 6This is a schematic cross-sectional view of the structure of a gas control component of a new energy semi-trailer drive control system of the present invention;

[0029] Figure 7 A new energy semi-trailer driving control system of the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0030] In the figure: 1, fixed frame; 2, motor; 3, transmission belt; 4, axle; 5, fixed plate; 6, driving gear; 7, driven gear; 8, air inlet fan; 9, air inlet; 10, ventilation groove; 11, air outlet; 12, auxiliary brake assembly; 1201, sleeve ring seat; 1202, ball bearing; 1203, ratchet; 1204, hydraulic cylinder; 1205, locking plate; 1206, ratchet; 13, docking frame; 14. Terminal assembly; 1401. Docking plate; 1402. Connecting wire; 1403. Wiring terminal; 1404. Piston seat; 15. Air control assembly; 1501. Terminal seat; 1502. First ventilation slot; 1503. Second ventilation slot; 1504. Driven fan; 1505. Driven shaft; 1506. First gear; 1507. Second gear; 1508. Exhaust fan; 1509. One-way exhaust valve. DETAILED DESCRIPTION

[0031] See also Figures 1 to 7 The present invention provides a technical solution: a new energy semi-trailer driving control system and method, including a fixed frame 1, an auxiliary brake component 12 and an air control component 15, a motor 2 is arranged inside the fixed frame 1, and a transmission belt 3 is arranged at the output end of the motor 2, the other end of the transmission belt 3 is connected to a wheel shaft 4, and two ends of the wheel shaft 4 are provided with a fixed plate 5, a driving gear 6 is fixed to the outer end of the wheel shaft 4, and a driven gear 7 is arranged at the top of the driving gear 6, an air intake fan 8 is connected to the axial end of the driven gear 7, and an air inlet 9 is provided at the outer end of the fixed frame 1, and a ventilation groove 10 is provided on the inner side of the fixed frame 1, an exhaust port 11 is provided at the rear end of the fixed frame 1, and the outer end of the wheel shaft 4 is sleeved with a driven gear 7, and a driven gear 7 is provided at the top end of the driven gear 7, and an air intake fan 8 is connected to the axial end of the driven gear 7, and an air inlet 9 is provided at the outer end of the fixed frame 1, and a ventilation groove 10 is provided on the inner side of the fixed frame 1, and an exhaust port 11 is provided at the rear end of the fixed frame 1, and the outer end of the wheel shaft 4 is sleeved with a driven gear 7, and a driven gear 7 is provided at the top end of the driven gear 7, and an air intake fan 8 is provided at the axial end of the driven gear 7, and an air inlet 9 is provided at the outer end of the fixed frame 1, and a ventilation groove 10 is provided on the inner side of the fixed frame 1, and an air outlet 11 is provided at the rear end of the fixed frame 1, and a driven gear 7 is provided at the outer end of the wheel shaft 4, and a driven gear 7 is provided at the top end of the driven gear 7, and a driven gear 7 There is an auxiliary brake assembly 12, which includes a socket ring seat 1201, a ball 1202, a ratchet 1203, a hydraulic cylinder 1204, a locking disk 1205 and a ratchet 1206. The ball 1202 is arranged on the inner side of the socket ring seat 1201, and the ratchet 1203 is arranged on the inner side of the socket ring seat 1201. The hydraulic cylinder 1204 is socketed on the inner side of the socket ring seat 1201, and the locking disk 1205 is connected to the output end of the hydraulic cylinder 1204. The ratchet 1206 is arranged on the outer end of the hydraulic cylinder 1204. The outer end of the fixed frame 1 is provided with a docking frame 13, and the outer end of the docking frame 13 is connected with a terminal assembly 14, and the outer end of the motor 2 is provided with an air control assembly 15.

[0032] See also Figures 1 to 7The driving gear 6 is meshed with the driven gear 7, and the driven gear 7 drives the air intake fan 8 to rotate. The air intake fan 8 rotates to allow outside air to enter the air inlet 9, and the air inlet 9 is connected to the air outlet 11 through the ventilation groove 10. The hydraulic cylinder 1204 pushes the engaging disk 1205 out to engage with the driving gear 6, and the ratchet 1206 at the outer end of the hydraulic cylinder 1204 is engaged with the ratchet 1203 on the inner side of the sleeve ring seat 1201. The terminal assembly 14 includes a docking disk 1401, a connecting line 1402, and a wiring terminal 1403. The outer end of the docking plate 1401 is provided with a connection line 1402, and the end of the docking plate 1401 away from the connection line 1402 is provided with a terminal 1403, the outer end of the terminal 1403 is fixed with the piston seat 1404, the docking frame 13 is fixedly connected to the docking plate 1401 by bolts, and the outer contour of the piston seat 1404 is in line with the inner contour of the docking frame 13, and the air control component 15 includes a terminal seat 1501, a first ventilation slot 1502, a second ventilation slot 1503, and a driven fan 1504, a driven shaft 1505, a first gear 1506, a second gear 1507, an exhaust fan 1508 and a one-way exhaust valve 1509, a first ventilation slot 1502 is provided on the inner side of the terminal seat 1501, and a second ventilation slot 1503 is provided inside the first ventilation slot 1502, a driven fan 1504 is provided inside the first ventilation slot 1502, a driven shaft 1505 is connected to the shaft end of the driven fan 1504, and a first gear 1506 is provided on the outer end of the driven shaft 1505, and the first gear The outer end of 1506 is meshed with a second gear 1507, the shaft end of the second gear 1507 is connected to an exhaust fan 1508, a one-way exhaust valve 1509 is arranged inside the second ventilation slot 1503, the driven fan 1504 drives the driven shaft 1505 and the first gear 1506 to rotate, and the first gear 1506 drives the exhaust fan 1508 to rotate through the second gear 1507, the exhaust fan 1508 is located inside the second ventilation slot 1503, and the second ventilation slot 1503 is connected to the docking frame 13 and the fixed frame 1;

[0033] The specific operation is as follows: the docking plate 1401 can be connected to the docking frame 13 through the locking bolt. After the docking plate 1401 is connected to the docking frame 13, the terminal 1403 can be connected to the terminal seat 1501, which enables the connecting line 1402 to power and control the motor 2, so that the motor 2 can work normally. During the operation of the motor 2, the wheel axle 4 and the fixed plate 5 can be driven to rotate through the transmission belt 3. The fixed plate 5 can be connected to the wheel hub of the semi-trailer, so as to realize the drive control of the semi-trailer. During the rotation of the wheel axle 4, it can drive the driving gear 6 fixed thereto to rotate. The driving gear 6 can drive the air intake fan 8 to rotate by meshing with the driven gear 7. During the rotation of the air intake fan 8, the outside air can be The air enters the interior of the fixed frame 1 through the air inlet 9. After entering the fixed frame 1, the air can pass through the ventilation groove 10 and the exhaust port 11 and then be discharged from the fixed frame 1. During the circulation of the external air, the motor 2 body and the transmission belt 3 can be cooled, which can effectively prevent the motor 2 and the transmission belt 3 from overheating. The cooling effect is achieved by relying on the driving kinetic energy of the equipment itself, which can avoid the need for additional heat dissipation components in the drive control system. In addition, the kinetic energy required for the driving gear 6 and the driven gear 7 to mesh and drive the air intake fan 8 to rotate is relatively small, so this design will not cause the semi-trailer driving kinetic energy to increase, which enables the system to achieve excellent heat dissipation effect under low energy consumption. The semi-trailer drive control system can The braking time can be shortened by making the motor 2 rotate in the reverse direction to recover the kinetic energy. During the reversal of the motor 2, the system can control the hydraulic cylinder 1204 to work, so that the engaging plate 1205 is pushed out to engage the driving gear 6. By engaging the driving gear 6, the semi-trailer can perform auxiliary braking in addition to the braking system. Because the hydraulic cylinder 1204 and the sleeve ring seat 1201 are sleeve-connected, and the meshing direction of the ratchet 1206 and the ratchet 1203 is the rotation direction of the wheel axle 4 when the vehicle is traveling forward, through this design, the engaging plate 1205 can quickly reduce the speed of the wheel axle 4 when engaging the driving gear 6, and at the same time, it will not cause damping interference when the wheel axle 4 rotates in the reverse direction to recover the kinetic energy, which can greatly improve the braking performance of the drive control system, and the docking frame 13 The inner contour fits the outer contour of the terminal seat 1501, so that after the docking plate 1401 and the docking frame 13 are fixed, the cavity between the piston seat 1404 and the terminal seat 1501 will form a closed space. During the heat dissipation process of the equipment, air will pass through the inside of the first ventilation slot 1502, so that the driven fan 1504 can rotate. During the rotation of the driven fan 1504, the first gear 1506 will be driven to rotate through the driven shaft 1505, and the first gear 1506 is meshed with the second gear 1507, so that the exhaust fan 1508 can discharge the air in the cavity between the piston seat 1404 and the terminal seat 1501 from the second ventilation slot 1503, and the one-way exhaust valve 1509 can limit the circulation of air. By continuous exhaust,The cavity between the piston seat 1404 and the terminal seat 1501 can be in a low-pressure state, and the low-pressure state can cause the piston seat 1404 to move toward the low-pressure side. The bolt connection between the docking plate 1401 and the docking frame 13 is very easy to loosen due to the vibration during the long-term driving of the semi-trailer, thereby causing the loosening and poor connection between the terminal 1403 and the terminal seat 1501. The design of the air control component 15 can greatly improve the stability between the two through auxiliary fixation. Through this design, the operation stability of the drive control system can be improved.

[0034] In summary, when the new energy semi-trailer driving control system and method is used, first, the docking plate 1401 can be connected with the docking frame 13 through the locking bolt. After the docking plate 1401 and the docking frame 13 are connected, the wiring terminal 1403 can be connected with the terminal seat 1501, so that the connecting line 1402 can power and control the motor 2, so that the motor 2 can work normally. During the operation of the motor 2, the wheel axle 4 and the fixed plate 5 can be driven to rotate through the transmission belt 3, and the fixed plate 5 can be connected with the wheel hub of the semi-trailer, so as to realize the driving control of the semi-trailer;

[0035] Then, during the rotation of the wheel shaft 4, it can drive the driving gear 6 fixed thereto to rotate, and the driving gear 6 can drive the air intake fan 8 to rotate by meshing with the driven gear 7. During the rotation of the air intake fan 8, the outside air can enter the interior of the fixed frame 1 through the air inlet 9. After the air enters the interior of the fixed frame 1, it can pass through the ventilation groove 10 and the exhaust port 11 and then be discharged from the fixed frame 1. During the circulation of the outside air, the motor 2 body and the transmission belt 3 can be cooled, which can effectively prevent the motor 2 and the transmission belt 3 from overheating. The cooling effect is achieved by relying on the driving kinetic energy of the equipment itself, which can avoid the need for additional heat dissipation components to be added to the drive control system. In addition, the kinetic energy required for the driving gear 6 and the driven gear 7 to mesh and drive the air intake fan 8 to rotate is relatively small, so this design will not cause the semi-trailer driving kinetic energy to increase, which enables the system to achieve excellent heat dissipation effect with low energy consumption.

[0036] Then, in the process of controlling the braking of the vehicle, the semi-trailer driving control system can shorten the braking time by making the motor 2 rotate in the reverse direction to recover the kinetic energy. During the reversal of the motor 2, the system can control the hydraulic cylinder 1204 to work, so that the engaging plate 1205 is pushed out to engage the driving gear 6. By engaging the driving gear 6, the semi-trailer can perform auxiliary braking in addition to the braking system. Because the hydraulic cylinder 1204 and the sleeve ring seat 1201 are sleeve-connected, and the meshing direction of the ratchet 1206 and the ratchet 1203 is the rotation direction of the wheel axle 4 when the vehicle is traveling forward, through this design, the wheel axle 4 can be quickly decelerated when the engaging plate 1205 engages the driving gear 6, and at the same time, it will not cause damping interference when the wheel axle 4 rotates in the reverse direction to recover the kinetic energy, which can greatly improve the braking performance of the driving control system;

[0037] Finally, because the inner contour of the docking frame 13 fits the outer contour of the terminal seat 1501, after the docking plate 1401 and the docking frame 13 are fixed, the cavity between the piston seat 1404 and the terminal seat 1501 will form a closed space. During the heat dissipation process of the equipment, air will pass through the inside of the first ventilation slot 1502, which enables the driven fan 1504 to rotate. During the rotation of the driven fan 1504, the first gear 1506 will be driven to rotate through the driven shaft 1505, and the first gear 1506 is meshed with the second gear 1507, which enables the exhaust fan 1508 to make the air in the cavity between the piston seat 1404 and the terminal seat 1501 The air is discharged from the second ventilation groove 1503, and the one-way exhaust valve 1509 can limit the circulation of air. Through continuous exhaust, the cavity between the piston seat 1404 and the terminal seat 1501 can be in a low-pressure state, and the low-pressure state can cause the piston seat 1404 to move to the low-pressure side. The bolt connection between the docking plate 1401 and the docking frame 13 is very easy to loosen due to the vibration during the long-term driving of the semi-trailer, thereby causing the loosening and poor connection between the terminal 1403 and the terminal seat 1501. The design of the air control component 15 can greatly improve the stability between the two through auxiliary fixation. Through this design, the operating stability of the drive control system can be improved.

[0038] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A new energy semi-trailer driving control system, characterized in that: The invention comprises a fixed frame (1), an auxiliary brake assembly (12) and an air control assembly (15); a motor (2) is arranged inside the fixed frame (1), and a transmission belt (3) is arranged at the output end of the motor (2); the other end of the transmission belt (3) is connected to a wheel shaft (4), and two ends of the wheel shaft (4) are provided with fixed disks (5); a driving gear (6) is fixed to the outer end of the wheel shaft (4), and a driven gear (7) is arranged at the top end of the driving gear (6); an air intake fan (8) is connected to the axial end of the driven gear (7); an air inlet (9) is provided at the outer end of the fixed frame (1), and a ventilation groove (10) is provided on the inner side of the fixed frame (1); an air outlet (11) is provided at the rear end of the fixed frame (1); the auxiliary brake assembly (12) is sleeved on the outer end of the wheel shaft (4); The auxiliary brake assembly (12) comprises a sleeve ring seat (1201), a ball (1202), a ratchet (1203), a hydraulic cylinder (1204), a locking disk (1205) and a ratchet (1206); the inner side of the sleeve ring seat (1201) is provided with a ball (1202), and the inner side of the sleeve ring seat (1201) is provided with a ratchet (1203); the inner side of the sleeve ring seat (1201) is sleeved with a hydraulic cylinder (1204), and the output end of the hydraulic cylinder (1204) is connected to the locking disk (1205); the outer end of the hydraulic cylinder (1204) is provided with a ratchet (1206); the outer end of the fixed frame (1) is provided with a docking frame (13), and the outer end of the docking frame (13) is connected to a terminal assembly (14); and the outer end of the motor (2) is provided with an air control assembly (15).

2. A new energy semi-trailer driving control system according to claim 1, characterized in that: The driving gear (6) is meshed with the driven gear (7), and the driven gear (7) drives the air intake fan (8) to rotate.

3. A new energy semi-trailer driving control system according to claim 1, characterized in that: The air inlet fan (8) rotates to allow external air to enter the air inlet (9), and the air inlet (9) is connected to the air outlet (11) through the ventilation groove (10).

4. A new energy semi-trailer driving control system according to claim 1, characterized in that: The hydraulic cylinder (1204) pushes out the engaging disk (1205) to engage with the driving gear (6), and the ratchet (1206) at the outer end of the hydraulic cylinder (1204) engages with the inner ratchet (1203) of the sleeve ring seat (1201).

5. A new energy semi-trailer driving control system according to claim 3, characterized in that: The terminal assembly (14) comprises a docking plate (1401), a connecting wire (1402), a connecting terminal (1403) and a piston seat (1404); the connecting wire (1402) is arranged at the outer end of the docking plate (1401), and the connecting terminal (1403) is arranged at one end of the docking plate (1401) away from the connecting wire (1402); and the piston seat (1404) is fixed to the outer end of the connecting terminal (1403).

6. A new energy semi-trailer driving control system according to claim 5, characterized in that: The docking frame (13) and the docking plate (1401) are fixedly connected by bolts, and the outer contour of the piston seat (1404) fits the inner contour of the docking frame (13).

7. A new energy semi-trailer driving control system according to claim 5, characterized in that: The air control component (15) comprises a terminal seat (1501), a first ventilation slot (1502), a second ventilation slot (1503), a driven fan (1504), a driven shaft (1505), a first gear (1506), a second gear (1507), an exhaust fan (1508) and a one-way exhaust valve (1509); the first ventilation slot (1502) is provided on the inner side of the terminal seat (1501), and the second ventilation slot (1503) is provided inside the first ventilation slot (1502); A driven fan (1504) is arranged inside the first ventilation slot (1502), the shaft end of the driven fan (1504) is connected to a driven shaft (1505), and the outer end of the driven shaft (1505) is provided with a first gear (1506), the outer end of the first gear (1506) is meshed with a second gear (1507), the shaft end of the second gear (1507) is connected to an exhaust fan (1508), and a one-way exhaust valve (1509) is arranged inside the second ventilation slot (1503).

8. A new energy semi-trailer driving control system according to claim 7, characterized in that: The driven fan (1504) drives the driven shaft (1505) and the first gear (1506) to rotate, and the first gear (1506) drives the exhaust fan (1508) to rotate through the second gear (1507).

9. A new energy semi-trailer driving control system according to claim 7, characterized in that: The exhaust fan (1508) is located inside the second ventilation slot (1503), and the second ventilation slot (1503) is connected to the docking frame (13) and the fixed frame (1).

10. A new energy semi-trailer driving control method, characterized in that: The new energy semi-trailer driving control method is applied to a new energy semi-trailer driving control system according to any one of claims 1 to 9, and the new energy semi-trailer driving control method comprises the following steps: S1: The wheel shaft (4) drives the driving gear (6) to rotate during the rotation process, and drives the air intake fan (8) to rotate through the meshing of the driven gear (7), thereby cooling the motor (2) body and the transmission belt (3); S2: The semitrailer driving control system shortens the braking time by causing the motor (2) to rotate in the reverse direction to recover kinetic energy during the process of controlling the vehicle braking; S3: During the heat dissipation process of the device, air will pass through the first ventilation groove (1502). Through continuous exhaust, the cavity between the piston seat (1404) and the terminal seat (1501) can be in a low-pressure state. The low-pressure state can cause the piston seat (1404) to move toward the low-pressure side to improve the connection stability between the terminal (1403) and the terminal seat (1501).

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