New energy automobile transmission device

Abstract

The invention relates to the technical field of automobile transmission, and provides a new energy automobile transmission device which comprises an engine shaft, a shell is arranged at one end of the engine shaft, a driving mechanism is arranged on the inner side of the shell and comprises a first gear, one side of the first gear is fixedly connected with the engine shaft, and a second gear is rotationally connected to the middle of the inner side of the shell. The bottom end of the inner side of the shell is rotationally connected with a third gear, the third gear is fixedly connected to one end of the wheel shaft, a starting motor is fixedly installed on the outer side of the shell, an output shaft of the starting motor is fixedly connected with the wheel shaft, and an acceleration piece is arranged at one end of the inner side of the shell; a power generation mechanism is arranged at the other end of the engine shaft. In the acceleration process, the engine shaft can quickly reach a high-speed rotation state within a short time under the auxiliary action of the acceleration piece, the acceleration time is greatly shortened, and meanwhile, the fuel oil loss can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of automobile transmission technology, and in particular to a new energy automobile transmission device. Background Art

[0002] A hybrid vehicle is a type of vehicle that uses an electric motor on the engine shaft to increase power and reduce fuel consumption based on a traditional internal combustion engine. When starting, the motor drives the wheel shaft to achieve low-speed driving, while the engine is used to drive the vehicle at high speeds. In addition, the generator can be used to recycle electrical energy when going downhill or coasting. It is one of the most important development directions in the automotive field.

[0003] After searching, the Chinese patent (publication number: CN102717694A) disclosed "a hybrid power transmission device, comprising: an engine crankshaft, a single-row planetary gear train, a shift mechanism and a motor; wherein the engine crankshaft is connected to the ring gear of the single-row planetary gear train through a flywheel; the planet carrier of the single-row planetary gear train is connected to the input shaft of the shift mechanism, and the output shaft of the shift mechanism is connected to the rotor shaft of the motor; the sun gear is connected to a one-way locking mechanism, and a clutch is provided between the sun gear and the ring gear."

[0004] This type of patent reduces the number of gears in the shift mechanism to reduce the axial size of the hybrid power transmission device, thereby simplifying the structure of the hybrid power transmission device. However, this structure has some technical defects:

[0005] First, when the vehicle accelerates to high speed, it is necessary to start the fuel engine to drive the engine shaft to high speed, and it is necessary to step on the accelerator to increase the amount of fuel injection. Since it takes a certain amount of time for the fuel to burn and generate heat, there is a certain lag in the acceleration of the engine shaft, and it cannot respond to acceleration in a short time;

[0006] Second, the transmission mechanism requires gears for transmission, and the meshing between the gears will produce intense friction and generate heat. Long-term operation will cause the gear structure to deform due to heat, causing danger;

[0007] Third, when a hybrid vehicle's power transmission structure is in high-speed driving state, part of the engine's transmission power will be absorbed by the connected electric motor and converted into electricity and stored in the battery, affecting the actual engine output torque and the upper limit of the hybrid vehicle's actual speed. In view of this, the present invention proposes a new energy vehicle transmission device. Summary of the Invention

[0008] The present invention provides a new energy vehicle transmission device, which solves the problem in the prior art that the engine shaft has a slow corresponding speed during the acceleration process.

[0009] The technical solution of the present invention is as follows: A new energy vehicle transmission device includes an engine shaft, a shell is provided at one end of the engine shaft, and a driving mechanism is provided on the inner side of the shell, the driving mechanism includes a first gear rotatably connected to the inner side of the shell, one side of the first gear is fixedly connected to the engine shaft, the middle part of the inner side of the shell is rotatably connected to the second gear meshing with the first gear, the bottom end of the inner side of the shell is rotatably connected to the third gear meshing with the second gear, the third gear is fixedly connected to one end of the wheel shaft, a starting motor is fixedly installed on the outer side of the shell, the output shaft of the starting motor is fixedly connected to the wheel shaft, an accelerator for assisting in driving the engine shaft to accelerate rotation is provided at one end of the inner side of the shell, a heat dissipation mechanism is provided at one end of the engine shaft to dissipate heat inside the shell by cooperating with the rotation of the engine shaft, and a power generation mechanism is provided at the other end of the engine shaft to generate electricity by cooperating with the low-speed rotation of the engine shaft.

[0010] Preferably, the accelerator includes an acceleration motor fixedly mounted on the outside of the shell, the output shaft of the acceleration motor is fixedly connected to a ratchet, the inner side of the shell is fixedly connected to a mounting bracket, the mounting bracket is rotatably connected to the engine shaft, the end of the engine shaft is fixedly connected to a turntable, the outer edge of the turntable is rotatably connected to a plurality of pawls distributed at equal angles around the turntable, and the plurality of pawls are all engaged with the tooth grooves of the ratchet.

[0011] Preferably, the heat dissipation mechanism includes a cylinder, the inner side of the cylinder is slidably connected to a piston, the top end of the piston is provided with a linkage part that drives the piston to slide back and forth by cooperating with the rotation of the engine shaft, the inlet end of the cylinder is fixedly connected to a cold air inlet pipe for introducing cold air, the outlet end of the cylinder is fixedly connected to a cold air outlet pipe, the outlet end of the cold air outlet pipe is fixedly connected to an air guide pipe, and the outlet end of the air guide pipe is connected to the interior of the shell.

[0012] Preferably, an air inlet one-way valve is fixedly connected to the cold air inlet pipe, and an air outlet one-way valve is fixedly connected to the cold air outlet pipe.

[0013] Preferably, the linkage includes a sliding rod passing through the side wall of the cylinder, the sliding rod is slidably connected to the cylinder, one end of the sliding rod is fixedly connected to the piston, the other end of the sliding rod is rotatably connected to a connecting seat, one end of the engine shaft is fixedly connected to a cam, the outer edge of the cam is rotatably connected to a connecting rod, and the end of the connecting rod away from the cam is rotatably connected to the connecting seat.

[0014] Preferably, the power generation mechanism includes a fixed plate, which is fixedly connected to the inner side of the vehicle body, and a cylinder is fixedly connected to the inner side of the fixed plate. The output end of the cylinder is fixedly connected to a movable plate, and one end of the movable plate is rotatably connected to a spline shaft, and one end of the spline shaft is fixedly connected to a second pair of joints, and one end of the engine shaft is fixedly connected to an elastic telescopic shaft, and one end of the elastic telescopic shaft is fixedly connected to a first pair of joints, and the second pair of joints slide with the first pair of joints by cooperating with the translation of the movable plate.

[0015] Preferably, the power generation mechanism further includes a generator set, the input shaft of the generator set is provided with a transmission member that drives the input shaft of the generator set to rotate by cooperating with the rotation of the spline shaft, and the current output end of the generator set is electrically connected to the battery pack.

[0016] Preferably, the elastic telescopic shaft includes a sleeve shaft, one end of the sleeve shaft is fixedly connected to the engine shaft, the other end of the sleeve shaft is slidably connected to the plug shaft, the end of the plug shaft is fixedly connected to a limiting block, the limiting block is slidably connected to the inner wall of the sleeve shaft, the end of the plug shaft away from the sleeve shaft is fixedly connected to the first pair of joints, a spring is sleeved on the inner side of the sleeve shaft, one end of the spring is in contact with the inner wall of the sleeve shaft, and the other end of the spring is in contact with the limiting block.

[0017] Preferably, a guide groove matching the limit block is formed on the inner wall of the sleeve shaft, and the limit block can slide along the guide groove.

[0018] Preferably, the transmission member includes a spline sleeve rotatably connected to one side of the fixed plate, the spline sleeve is arranged on the spline shaft and meshes with the spline shaft, the outer side of the spline sleeve is fixedly connected to a first pulley, the input shaft of the generator set is fixedly connected to a second pulley, and the second pulley is connected to the first pulley through a belt drive.

[0019] The working principle and beneficial effects of the present invention are:

[0020] 1. When the vehicle starts, the starting motor is activated to drive the wheel shaft to rotate, thereby driving the vehicle to travel at a low speed. When it is necessary to accelerate to a high speed, the starting motor is turned off and the engine is started to drive the engine shaft to rotate. At the same time, the accelerator is activated to assist in driving the engine shaft to accelerate, causing the first gear to rotate at a high speed, which in turn causes the second gear to rotate synchronously, causing the third gear to rotate and drive the wheel shaft to rotate at a high speed to achieve the purpose of acceleration. During the entire process, with the assistance of the accelerator, the engine shaft can quickly reach a high-speed rotation state in a short time, greatly shortening the acceleration time and reducing fuel consumption.

[0021] 2. When the vehicle accelerates, the engine is started to drive the engine shaft to rotate, and the acceleration motor is started to drive the ratchet to rotate, so that the ratchet exerts a rotational thrust on all the pawls, and the turntable applies secondary power to the engine shaft, which allows the engine shaft to rotate quickly to achieve a high-speed rotation state, which can greatly shorten the acceleration time of the vehicle; when the vehicle is traveling at high speed, the acceleration motor is turned off, and the engine is used as the only power for the wheel shaft. This can avoid the acceleration motor from increasing heat loss due to excessive speed. At the same time, the structure of the ratchet pawl can prevent the engine shaft from driving the output shaft of the acceleration motor to rotate when the engine is the only power, thereby reducing power loss. The entire structure greatly reduces energy loss under rapid acceleration, and the energy-saving effect is significantly improved;

[0022] 3. During the rotation of the engine shaft, the cam will rotate synchronously with the engine shaft, causing the connecting rod to drive the slide rod to slide back and forth, which causes the piston to slide back and forth inside the cylinder, causing the pressure inside the cylinder to intermittently increase and decrease. When the pressure inside the cylinder decreases, the cold air inlet pipe will introduce the cold air into the cylinder through the air inlet one-way valve. When the pressure inside the cylinder increases, the cold air outlet pipe will introduce the cold air inside the cylinder through the air outlet one-way valve into the air duct, and then the air duct will introduce the cold air into the shell. In this cycle, the air duct can intermittently introduce cold air into the shell during the continuous rotation of the engine shaft, so that the gear components inside the shell can be cooled, effectively avoiding the problem of deformation of the gear components due to continuous heat during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a schematic structural diagram of a new energy vehicle transmission device of the present invention;

[0025] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the acceleration element of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the heat dissipation mechanism of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the linkage member of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the power generation mechanism of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the elastic telescopic shaft of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the transmission part of the present invention.

[0033] Figure: 1. Engine shaft; 2. Wheel shaft; 3. Housing; 4. Driving mechanism; 41. First gear; 42. Second gear; 43. Third gear; 44. Starting motor; 45. Accelerator; 451. Accelerator motor; 452. Ratchet; 453. Mounting bracket; 454. Turntable; 455. Paw; 5. Heat dissipation mechanism; 51. Cylinder; 52. Piston; 53. Linkage; 531. Sliding rod; 532. Connecting seat; 533. Cam; 534. Connecting rod; 54. Air inlet pipe; 55. Air intake unit 6. One-way valve; 56. Cold air outlet pipe; 57. One-way valve for air outlet; 58. Air guide pipe; 6. Power generation mechanism; 61. Elastic telescopic shaft; 611. Sleeve shaft; 612. Insert shaft; 613. Limit block; 614. Spring; 615. Guide groove; 62. First pair of joints; 63. Fixed plate; 64. Cylinder; 65. Movable plate; 66. Spline shaft; 67. Second pair of joints; 68. Generator set; 69. Battery pack; 60. Transmission member; 601. Spline sleeve; 602. First pulley; 603. Second pulley. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 9As shown, this embodiment provides a new energy vehicle transmission device, including an engine shaft 1, a housing 3 is provided at one end of the engine shaft 1, and a driving mechanism 4 is provided inside the housing 3. The driving mechanism 4 includes a first gear 41 rotatably connected to the inside of the housing 3, one side of the first gear 41 is fixedly connected to the engine shaft 1, a second gear 42 meshing with the first gear 41 is rotatably connected to the middle part of the inside of the housing 3, and a third gear 43 meshing with the second gear 42 is rotatably connected to the bottom end of the inside of the housing 3. The third gear 43 is fixedly connected to one end of the wheel shaft 2, a starting motor 44 is fixedly installed on the outside of the housing 3, and the output shaft of the starting motor 44 is fixedly connected to the wheel shaft 2, an accelerator 45 for assisting in driving the engine shaft 1 to accelerate rotation is provided at one end of the inner side of the housing 3, a heat dissipation mechanism 5 is provided at one end of the engine shaft 1 to dissipate heat from the inside of the housing 3 by cooperating with the rotation of the engine shaft 1, and a power generation mechanism 6 is provided at the other end of the engine shaft 1 to generate electricity by cooperating with the low-speed rotation of the engine shaft 1.

[0036] When the vehicle starts, the starting motor 44 is started to drive the wheel shaft 2 to rotate to drive the vehicle to travel at a low speed. When it is necessary to accelerate to a high speed, the starting motor 44 is turned off and the engine is started to drive the engine shaft 1 to rotate. At the same time, the accelerator 45 is started to assist in driving the engine shaft 1 to accelerate, so that the first gear 41 rotates at a high speed, which makes the second gear 42 rotate synchronously, so that the third gear 43 rotates and drives the wheel shaft 2 to rotate at a high speed to achieve the acceleration purpose. During the whole process, with the assistance of the accelerator 45, the engine shaft 1 can quickly reach a high-speed rotation state in a short time, which greatly shortens the acceleration time and reduces fuel loss.

[0037] Furthermore, the accelerator 45 includes an acceleration motor 451 fixedly mounted on the outside of the shell 3, the output shaft of the acceleration motor 451 is fixedly connected to the ratchet 452, the inner side of the shell 3 is fixedly connected to the mounting bracket 453, the mounting bracket 453 is rotatably connected to the engine shaft 1, the end of the engine shaft 1 is fixedly connected to the turntable 454, the outer edge of the turntable 454 is rotatably connected to a plurality of ratchets 455 distributed at equal angles around the turntable 454, and the plurality of ratchets 455 are all engaged with the tooth grooves of the ratchet 452.

[0038] When the vehicle accelerates, the engine is started to drive the engine shaft 1 to rotate, and the acceleration motor 451 is started to drive the ratchet 452 to rotate, so that the ratchet 452 applies a rotational thrust to all the pawls 455, so that the turntable 454 applies secondary power to the engine shaft 1, which allows the engine shaft 1 to rotate quickly to reach a high-speed rotation state, which can greatly shorten the acceleration time of the vehicle; when the vehicle is traveling at high speed, the acceleration motor 451 is turned off, so that the engine is used as the only power for the wheel shaft 2, which can avoid the acceleration motor 451 from increasing heat loss due to excessive speed. At the same time, the structure of the ratchet pawl can prevent the engine shaft 1 from driving the output shaft of the acceleration motor 451 to rotate when the engine is the only power, thereby reducing power loss. The entire structure greatly reduces energy loss when accelerating quickly, and the energy-saving effect is significantly improved.

[0039] Furthermore, the heat dissipation mechanism 5 includes a cylinder 51, the inner side of the cylinder 51 is slidably connected to a piston 52, the top of the piston 52 is provided with a linkage 53 that drives the piston 52 to slide back and forth by cooperating with the rotation of the engine shaft 1, the inlet end of the cylinder 51 is fixedly connected to a cold air inlet pipe 54 for introducing cold air, the outlet end of the cylinder 51 is fixedly connected to a cold air outlet pipe 56, the outlet end of the cold air outlet pipe 56 is fixedly connected to an air guide pipe 58, the outlet end of the air guide pipe 58 is connected to the interior of the shell 3, and the cold air inlet pipe 54 is fixedly connected to the cold air outlet pipe 56. It is connected to an air inlet one-way valve 55, and an air outlet one-way valve 57 is fixedly connected to the cold air outlet pipe 56. The linkage part 53 includes a sliding rod 531 that passes through the side wall of the cylinder 51. The sliding rod 531 is slidably connected to the cylinder 51, one end of the sliding rod 531 is fixedly connected to the piston 52, and the other end of the sliding rod 531 is rotatably connected to the connecting seat 532. One end of the engine shaft 1 is fixedly connected to the cam 533, and the outer edge of the cam 533 is rotatably connected to the connecting rod 534, and the end of the connecting rod 534 away from the cam 533 is rotatably connected to the connecting seat 532.

[0040] During the rotation of the engine shaft 1, the cam 533 will rotate synchronously with the engine shaft 1, so that the connecting rod 534 drives the slide rod 531 to slide back and forth, which makes the piston 52 slide back and forth inside the cylinder 51, and also makes the pressure inside the cylinder 51 intermittently increase and decrease. When the pressure inside the cylinder 51 decreases, the cold air inlet pipe 54 introduces the cold air into the cylinder 51 through the air inlet check valve 55. When the pressure inside the cylinder 51 increases, the cold air outlet pipe 56 introduces the cold air inside the cylinder 51 into the air duct 58 through the air outlet check valve 57, and then the cold air is introduced into the shell 3 by the air duct 58. In this cycle, the air duct 58 can intermittently introduce cold air into the shell 3 during the continuous rotation of the engine shaft 1, so as to cool the gear components inside the shell 3 and effectively avoid the problem of deformation of the gear components due to continuous heat during operation.

[0041] Furthermore, the power generation mechanism 6 includes a fixed plate 63, which is fixedly connected to the inner side of the vehicle body. A cylinder 64 is fixedly connected to the inner side of the fixed plate 63. The output end of the cylinder 64 is fixedly connected to a movable plate 65. One end of the movable plate 65 is rotatably connected to a spline shaft 66. One end of the spline shaft 66 is fixedly connected to a second pair of joints 67. One end of the engine shaft 1 is fixedly connected to an elastic telescopic shaft 61. One end of the elastic telescopic shaft 61 is fixedly connected to a first pair of joints 62. The second pair of joints 67 slides with the first pair of joints 62 by cooperating with the translation of the movable plate 65. A generator set 68 is provided on the inner side of the vehicle body. The input shaft of the generator set 68 is provided with a transmission member 60 that drives the input shaft of the generator set 68 to rotate by cooperating with the rotation of the spline shaft 66. The current output end of the generator set 68 is electrically connected to the battery pack 69.

[0042] When the engine shaft 1 is not traveling at high speed, the cylinder 64 is started to enable the movable plate 65 to drive the spline shaft 66 to translate, so that the second pair of joints 67 approaches the first pair of joints 62 and cooperates with each other. Since the engine shaft 1 will drive the elastic telescopic shaft 61 to rotate during rotation, the first pair of joints 62 drives the second pair of joints 67 to rotate synchronously, which makes the spline shaft 66 rotate synchronously, so that the transmission member 60 drives the input shaft of the generator set 68 to rotate to generate electricity and introduce the current into the battery pack 69 for storage. The battery pack 69 provides electrical energy for the starting motor 44 and the acceleration motor 451, thereby realizing full utilization of energy, and continuously supplies energy to the battery pack 69 to avoid the battery pack 69 from being out of power.

[0043] Furthermore, the elastic telescopic shaft 61 includes a sleeve shaft 611, one end of the sleeve shaft 611 is fixedly connected to the engine shaft 1, and the other end of the sleeve shaft 611 is slidably connected to the plug shaft 612, the end of the plug shaft 612 is fixedly connected to the limiting block 613, the limiting block 613 is slidably connected to the inner wall of the sleeve shaft 611, and the end of the plug shaft 612 away from the sleeve shaft 611 is fixedly connected to the first pair of joints 62, and a spring 614 is sleeved on the inner side of the sleeve shaft 611, one end of the spring 614 is in contact with the inner wall of the sleeve shaft 611, and the other end of the spring 614 is in contact with the limiting block 613. The inner wall of the sleeve shaft 611 is provided with a guide groove 615 matching the limiting block 613, and the limiting block 613 can slide along the guide groove 615.

[0044] The design of the spring 614 allows elastic contact between the first pair of joints 62 and the second pair of joints 67, so that the second pair of joints 67 and the first pair of joints 62 can cooperate smoothly. At the same time, the limit block 613 can ensure that the plug shaft 612 and the sleeve shaft 611 always rotate synchronously, thereby ensuring stable power transmission.

[0045] Furthermore, the transmission member 60 includes a spline sleeve 601 rotatably connected to one side of the fixed plate 63, the spline sleeve 601 is sleeved on the spline shaft 66 and meshed with the spline shaft 66, the outer side of the spline sleeve 601 is fixedly connected to the first pulley 602, the input shaft of the generator set 68 is fixedly connected to the second pulley 603, and the second pulley 603 is connected to the first pulley 602 through a belt drive.

[0046] Working principle: When the vehicle starts, the starting motor 44 is started to drive the wheel shaft 2 to rotate so as to drive the vehicle to travel at a low speed. When the vehicle accelerates, the engine is started to drive the engine shaft 1 to rotate, and the acceleration motor 451 is started at the same time to drive the ratchet 452 to rotate, so that the ratchet 452 exerts a rotational thrust on all the pawls 455, so that the turntable 454 applies secondary power to the engine shaft 1, which enables the engine shaft 1 to rotate quickly to reach a high-speed rotation state, thereby greatly shortening the acceleration time of the vehicle; when the vehicle is traveling at a high speed, the acceleration motor 451 is turned off, so that the engine serves as the sole power for the wheel shaft 2, thereby avoiding the acceleration motor 451 from increasing heat loss due to excessive rotation speed.

[0047] When the engine shaft 1 is not traveling at high speed, the cylinder 64 is activated to cause the movable plate 65 to drive the spline shaft 66 to translate, causing the second pair of joints 67 to approach the first pair of joints 62 and cooperate with each other. Since the rotation of the engine shaft 1 drives the elastic telescopic shaft 61 to rotate, the first pair of joints 62 drives the second pair of joints 67 to rotate synchronously, which in turn causes the spline shaft 66 to rotate synchronously, causing the transmission member 60 to drive the input shaft of the generator set 68 to rotate to generate electricity and direct the current into the battery pack 69 for storage. The battery pack 69 provides power for the starting motor 44 and the acceleration motor 451.

[0048] During the rotation of the engine shaft 1, the cam 533 will rotate synchronously with the engine shaft 1, so that the connecting rod 534 drives the slide rod 531 to slide back and forth, which makes the piston 52 slide back and forth inside the cylinder 51, and also makes the pressure inside the cylinder 51 intermittently increase and decrease. When the pressure inside the cylinder 51 decreases, the cold air inlet pipe 54 introduces the cold air into the cylinder 51 through the air inlet check valve 55. When the pressure inside the cylinder 51 increases, the cold air outlet pipe 56 introduces the cold air inside the cylinder 51 into the air duct 58 through the air outlet check valve 57, and then the cold air is introduced into the shell 3 by the air duct 58. In this cycle, the air duct 58 can intermittently introduce cold air into the shell 3 during the continuous rotation of the engine shaft 1, so as to cool the gear components inside the shell 3 and effectively avoid the problem of deformation of the gear components due to continuous heat during operation.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new energy vehicle transmission device, comprising an engine shaft (1), one end of the engine shaft (1) being provided with a housing (3), characterized in that: A driving mechanism (4) is provided on the inner side of the housing (3), and the driving mechanism (4) includes a first gear (41) rotatably connected to the inner side of the housing (3), one side of the first gear (41) is fixedly connected to the engine shaft (1), a second gear (42) meshing with the first gear (41) is rotatably connected to the middle part of the inner side of the housing (3), a third gear (43) meshing with the second gear (42) is rotatably connected to the bottom end of the inner side of the housing (3), and the third gear (43) is fixedly connected to one end of the wheel shaft (2). A starting motor (44) is fixedly mounted on the outside of the housing (3), and the output shaft of the starting motor (44) is fixedly connected to the wheel shaft (2). An accelerator (45) for assisting in driving the engine shaft (1) to accelerate rotation is provided at one end of the inner side of the housing (3). A heat dissipation mechanism (5) for dissipating heat inside the housing (3) by cooperating with the rotation of the engine shaft (1) is provided at one end of the engine shaft (1). A power generation mechanism (6) for generating electricity by cooperating with the low-speed rotation of the engine shaft (1) is provided at the other end of the engine shaft (1).

2. A new energy vehicle transmission device according to claim 1, characterized in that: The acceleration member (45) comprises an acceleration motor (451) fixedly mounted on the outside of the housing (3); the output shaft of the acceleration motor (451) is fixedly connected to a ratchet (452); the inner side of the housing (3) is fixedly connected to a mounting frame (453); the mounting frame (453) is rotatably connected to the engine shaft (1); the end of the engine shaft (1) is fixedly connected to a turntable (454); the outer edge of the turntable (454) is rotatably connected to a plurality of ratchet pawls (455) distributed at equal angles around the turntable (454); and the plurality of ratchet pawls (455) are all engaged with the tooth grooves of the ratchet (452).

3. A new energy vehicle transmission device according to claim 1, characterized in that: The heat dissipation mechanism (5) comprises a cylinder (51), the inner side of which is slidably connected to a piston (52), the top end of which is provided with a linkage member (53) for driving the piston (52) to slide back and forth by cooperating with the rotation of the engine shaft (1), the inlet end of the cylinder (51) is fixedly connected to a cold air inlet pipe (54) for introducing cold air, the outlet end of the cylinder (51) is fixedly connected to a cold air outlet pipe (56), the outlet end of the cold air outlet pipe (56) is fixedly connected to an air guide pipe (58), and the outlet end of the air guide pipe (58) is connected to the interior of the housing (3).

4. A new energy vehicle transmission device according to claim 3, characterized in that: An air inlet check valve (55) is fixedly connected to the cold air inlet pipe (54), and an air outlet check valve (57) is fixedly connected to the cold air outlet pipe (56).

5. A new energy vehicle transmission device according to claim 4, characterized in that: The linkage member (53) includes a sliding rod (531) penetrating the side wall of the cylinder (51), the sliding rod (531) being slidably connected to the cylinder (51), one end of the sliding rod (531) being fixedly connected to the piston (52), the other end of the sliding rod (531) being rotatably connected to a connecting seat (532), one end of the engine shaft (1) being fixedly connected to a cam (533), the outer edge of the cam (533) being rotatably connected to a connecting rod (534), and the end of the connecting rod (534) away from the cam (533) being rotatably connected to the connecting seat (532).

6. The new energy vehicle transmission device according to claim 1, characterized in that: The power generation mechanism (6) includes a fixed plate (63), the fixed plate (63) is fixedly connected to the inner side of the vehicle body, the inner side of the fixed plate (63) is fixedly connected to a cylinder (64), the output end of the cylinder (64) is fixedly connected to a movable plate (65), one end of the movable plate (65) is rotatably connected to a spline shaft (66), one end of the spline shaft (66) is fixedly connected to a second pair of joints (67), one end of the engine shaft (1) is fixedly connected to an elastic telescopic shaft (61), one end of the elastic telescopic shaft (61) is fixedly connected to a first pair of joints (62), and the second pair of joints (67) is slidably matched with the first pair of joints (62) by cooperating with the translation of the movable plate (65).

7. A new energy vehicle transmission device according to claim 6, characterized in that: The power generation mechanism (6) further includes a generator set (68), the input shaft of the generator set (68) being provided with a transmission member (60) which drives the input shaft of the generator set (68) to rotate by cooperating with the rotation of the spline shaft (66), and the current output end of the generator set (68) is electrically connected to the battery pack (69).

8. A new energy vehicle transmission device according to claim 7, characterized in that: The elastic telescopic shaft (61) comprises a sleeve shaft (611), one end of the sleeve shaft (611) is fixedly connected to the engine shaft (1), the other end of the sleeve shaft (611) is slidably connected to a plug shaft (612), the end of the plug shaft (612) is fixedly connected to a limiting block (613), the limiting block (613) is slidably connected to the inner wall of the sleeve shaft (611), the end of the plug shaft (612) away from the sleeve shaft (611) is fixedly connected to the first pair of joints (62), the inner side of the sleeve shaft (611) is sleeved with a spring (614), one end of the spring (614) contacts the inner wall of the sleeve shaft (611), and the other end of the spring (614) contacts the limiting block (613).

9. The new energy vehicle transmission device according to claim 8, characterized in that: The inner wall of the sleeve shaft (611) is provided with a guide groove (615) matching the limit block (613), and the limit block (613) can slide along the guide groove (615).

10. The new energy vehicle transmission device according to claim 7, characterized in that: The transmission member (60) includes a spline sleeve (601) rotatably connected to one side of a fixed plate (63); the spline sleeve (601) is sleeved on a spline shaft (66) and meshed with the spline shaft (66); a first pulley (602) is fixedly connected to the outer side of the spline sleeve (601); the input shaft of the generator set (68) is fixedly connected to a second pulley (603); and the second pulley (603) is connected to the first pulley (602) through a belt transmission.

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