CN219133843U - Hybrid power driving device - Google Patents

Abstract

The utility model provides a hybrid power driving device, wherein an engine, a crankshaft, a generator shaft, a clutch shaft, a driving motor, a driving shaft and a power transmission mechanism are arranged in a shell, the power transmission mechanism comprises an input shaft and an output shaft which are mutually parallel, one end of the generator shaft is coaxially connected with one end of the crankshaft in a transmission manner, the other end of the crankshaft is in transmission connection with the clutch through a clutch gear pair, the clutch shaft, the driving shaft and the input shaft are coaxially connected in a triaxial coaxial transmission manner, and the axial direction of the input shaft is parallel to the axial direction of the crankshaft; the generator is positioned at one side of the inner cavity of the shell, the driving motor or the clutch is positioned at the other side of the inner cavity of the shell, the power transmission mechanism is distributed in the inner cavity of the shell between the generator and the driving motor or the clutch, and the clutch and the power transmission mechanism are arranged at the same side of the engine side by side. The device shares the shell among all structures, has compact structure in space arrangement and high integration in structure, thereby reducing the manufacturing cost and improving the working efficiency of the system.

Description

Hybrid power driving device

Technical Field

The utility model relates to the technical field of transmissions, in particular to a hybrid power driving device.

Background

Through years of development, the oil-electricity hybrid power coupling system has developed from an original discrete structure of an engine and a motor to a modularized integrated direction of the engine, the motor, a transmission and the like, wherein a typical IMMD hybrid system in the prior art is an e-CVT gearbox, and comprises a driving motor, a generator, a clutch, a gear and other parts, wherein the parts are of a 4-shaft structure, and the structural arrangement has a plurality of problems:

1) The generator and the driving motor are coaxially arranged, and the clutch and the transmission gear part occupy a certain axial space size, so that the structure greatly increases the axial length and is inconvenient for space arrangement;

2) Because the hollow shaft sleeve of the driving motor is connected to the generator, the coaxial structure greatly increases the manufacturing cost of parts;

3) The 2.0L natural gas suction engine and the power transmission part are of separate structures and have no common shell design, so that the structure does not achieve high integration;

4) The power transmission part is distributed on one side of the 2.0L natural gas suction engine, and is also inconvenient for space arrangement;

5) The transmission system component adopts a single-gear speed reducer mechanism, so that the rotating speed of a driving motor is high, the NVH (Noise, vibration, harshness) problem is caused, and meanwhile, the cost is increased due to the use of a high-rotating-speed bearing;

6) The engine speed and the generator speed are matched by adopting a pair of gear pairs between the engine and the generator, and the maximum speed ratio of the pair of gear pairs cannot exceed 5 speed ratios, so that the increase of the generator speed is limited, and the increase of the generating power is limited under the condition of certain torque;

7) Because the engine cavity is separated from the cavity of the power transmission part, the heat of the engine cannot be well transferred into the power transmission part, so that the parallel mode starting clutch has poor engagement performance at low temperature in winter, and the efficiency of the power transmission part is low; only after the heat is slowly released, the efficiency of the power transmission part is high.

Similarly, the mechanical structure of the bi-di fourth-generation hybrid DM-i system, which comprises parts such as a driving motor MG, a generator G, a clutch, a gear and the like, is shown in fig. 1 as a cross-sectional view, and is a 5-shaft structure, and the following problems exist in the structural arrangement:

1) The generator G and the driving motor MG are arranged in parallel, which is different from coaxial arrangement of the IMMD in the Honda, so that the axial space is saved, and the space arrangement is convenient compared with the IMMD in the Honda; however, the power transmission part is also arranged at one side of the 1.5L natural gas-suction engine, and the clutch and the transmission gear part also occupy a certain axial space size, so that the space arrangement is inconvenient;

2) The 1.5L natural aspiration engine and the power transmission part are also separate structures, and have no common shell design, so the structure does not achieve high integration;

3) The transmission system component adopts a single-gear speed reducer mechanism, so that the rotating speed of a motor is high, the NVH (Noise, vibration, harshness) problem is caused, and meanwhile, the cost is increased due to the use of a high-rotating-speed bearing;

4) The engine speed and the generator speed are matched by adopting a pair of gear pairs between the engine and the generator G, and the maximum speed ratio of the pair of gear pairs cannot exceed 5 speed ratios, so that the increase of the generator speed is limited, and the increase of the generating power is limited under the condition of certain torque;

5) Because the engine cavity is separated from the cavity of the power transmission part, the heat of the engine cannot be well transferred into the power transmission part, so that the parallel mode starting clutch has poor engagement performance at low temperature in winter, and the efficiency of the power transmission part is low; only after the heat is slowly released, the efficiency of the power transmission part is high.

Therefore, the third generation IMMD hybrid system and the Bidi fourth generation hybrid DM-i system in Honda have the problems of insufficient space arrangement, high manufacturing cost, low system working efficiency and the like because the high integration is not realized in the structure.

Disclosure of Invention

The utility model aims to provide a hybrid power driving device, which shares a shell among all structures of the device, has compact structure in space arrangement, and ensures high integration in structure, thereby reducing manufacturing cost and improving system working efficiency.

The utility model provides a hybrid power driving device, which comprises a shell, wherein an engine, a crankshaft, a generator shaft, a clutch shaft, a driving motor, a driving shaft and a power transmission mechanism are arranged in the shell, the power transmission mechanism comprises an input shaft and an output shaft which are mutually parallel, one end of the generator shaft is arranged on the shell, the other end of the generator shaft is coaxially and in transmission connection with one end of the crankshaft, the other end of the crankshaft is in transmission connection with the clutch through a clutch gear pair, the clutch shaft, the driving shaft and the input shaft are coaxially and in transmission connection, and the axial direction of the input shaft is parallel to the axial direction of the crankshaft; the power transmission mechanism is distributed in the inner cavity of the shell between the power generator and the driving motor or the clutch, and the clutch and the power transmission mechanism are arranged on the same side of the engine side by side.

Compared with the prior art, the utility model has the following advantages:

1) According to the utility model, the power transmission mechanism is arranged in the inner cavity of the shell between the generator and the driving motor or the clutch, the clutch and the power transmission mechanism are arranged side by side on the same side of the engine, the crankshaft of the engine and the generator shaft are coaxially arranged, and the driving shaft of the driving motor and the generator shaft are arranged in parallel instead of being coaxially arranged, so that the axial length of the power driving device is not occupied, namely, the axial space is saved, the space arrangement is convenient, the space is reasonably utilized, the structure among the structures is compact, and the problem that the axial length of the prior art is long and the space arrangement is inconvenient is solved;

2) The engine, the crankshaft, the generator shaft, the clutch, the driving motor, the driving shaft and the power transmission mechanism are all arranged in one shell, so that the engine, the crankshaft, the generator shaft, the clutch, the driving motor, the driving shaft and the power transmission mechanism share one shell structure, the high integration of the structure is facilitated, the engine cavity and the power transmission mechanism cavity are made into a communicated cavity in a high integration mode, and one set of lubricating oil is shared, so that heat generated by the engine can be quickly transferred to the power transmission mechanism cavity, the temperature of the lubricating oil is quickly increased, the problem of poor jointing performance of the clutch started in a parallel mode at low temperature in winter is solved, and the problem of low efficiency of the power transmission mechanism is solved, thereby improving the working efficiency of the power transmission mechanism;

3) Because the crankshaft of the engine is not coaxially connected with the driving shaft of the driving motor, and the coaxial structure can increase the manufacturing cost of parts, the crankshaft of the engine is in transmission connection with the clutch and the driving motor through the clutch gear pair, and the manufacturing cost of the parts can be reduced.

The hybrid power driving device further comprises a clutch outer hub and a clutch inner hub, wherein the clutch gear pair comprises a clutch driving gear fixedly assembled on the crankshaft and a clutch driven gear fixedly assembled on the driving shaft, the clutch driving gear is meshed with the clutch driven gear, the clutch outer hub is fixedly arranged on the clutch driven gear, and the clutch inner hub is fixedly arranged on the driving shaft. Through setting up clutch gear pair for engine crankshaft's power transfer to the clutch is on, specifically on the clutch outer hub is with power transfer to clutch driven gear, the clutch inner hub fixed mounting is on the drive shaft, when the clutch combines, can be with power transfer to the drive shaft.

The input shaft is in transmission connection with the output shaft through a two-gear pair, the two-gear pair is a first-gear pair and a second-gear pair respectively, the first-gear pair comprises a first-gear driving gear fixedly assembled on the input shaft and a first-gear driven gear fixedly assembled on the output shaft, and the first-gear driving gear is meshed with the first-gear driven gear; the second gear pair comprises a second driving gear fixedly assembled on the input shaft and a second driven gear fixedly assembled on the output shaft, and the second driving gear is meshed with the second driven gear; a gear shifting mechanism is arranged between the first-gear driven gear and the second-gear driven gear; the gear shifting mechanism comprises a synchronizing sleeve which can be arranged on the output shaft in a sliding mode along the axis direction of the output shaft and a gear shifting fork which drives the synchronizing sleeve to move, and the synchronizing sleeve can be engaged with the first-gear driven gear or the second-gear driven gear when sliding. The power is transmitted to the power transmission mechanism through two gears of gear pair transmission, and meanwhile, the rotating speed of the driving motor is reduced, so that a high-rotating-speed bearing is avoided, the problem of NVH (noise and harshness) is reduced while the high cost is solved; the gear shifting mechanism is realized by adopting the synchronous sleeve and the gear shifting fork, and has simple structure and easy operation.

As another embodiment of the present utility model, the input shaft and the output shaft are in transmission connection through a single gear pair. The input shaft and the output shaft can adopt multi-gear speed reduction output, can also adopt single-gear output, and can select different gear output modes according to actual conditions.

In the utility model, the generator shaft is in transmission connection with the crankshaft through a planet row assembly, and the planet row assembly comprises a sun gear fixedly assembled on the generator shaft, a planet carrier fixedly connected on the crankshaft and a gear ring fixed on the shell; and a brake is arranged on the gear ring. By arranging the planet row assembly, the power transmission between the generator and the engine can realize a large speed ratio, the rotating speed of the generator is improved, and the problem that the lifting of the generated power is limited under the condition of a certain torque is solved.

As another embodiment of the utility model, the generator shaft is in transmission connection with the crankshaft through an external meshed cylindrical gear pair, the external meshed cylindrical gear pair comprises an external meshed driving gear fixedly assembled on the crankshaft and an external meshed driven gear fixedly assembled on the generator shaft, and the external meshed driving gear is meshed with the external meshed driven gear. Through external engagement cylindrical gear pair for power transmission between generator and the engine is simpler, simultaneously, can make generator shaft and the engine shaft not coaxial setting, and the space arrangement of being convenient for makes the structure compacter.

In the utility model, a water pump assembly is arranged between the engine and the generator, the water pump assembly comprises a water pump transmission shaft connected to the crankshaft through a water pump output gear pair in a transmission way and a water pump assembly connected with the output end of the water pump transmission shaft, and the water pump assembly is arranged on the shell. Through the water pump assembly, the water pump assembly plays the cooling effect of circulative cooling for the device operates more steadily.

In the utility model, the hybrid power driving device further comprises a hydraulic pump assembly arranged in the shell, the hydraulic pump assembly comprises a hydraulic pump driving belt wheel, a hydraulic pump driven belt wheel and a hydraulic pump assembly, the hydraulic pump driving belt wheel is in transmission connection with the clutch gear pair, the hydraulic pump driven belt wheel is connected with the hydraulic pump driving belt wheel through a hydraulic pump belt, the hydraulic pump driven belt wheel is arranged on the hydraulic pump assembly, and the hydraulic pump assembly is arranged on the shell. The hydraulic pump assembly plays a role in oil cooling, lubrication and cooling, so that the device operates more stably; the hydraulic pump assembly is connected to the clutch driven gear, and the space arrangement is facilitated by changing the power source of the hydraulic pump assembly.

As one embodiment of the present utility model, the driving motor is disposed at one side of the inner cavity of the housing, the clutch is disposed at one side close to the power transmission mechanism, and the hydraulic pump assembly is disposed between the driving motor and the clutch;

or the clutch is arranged at one side of the inner cavity of the shell, the driving motor is arranged at one side close to the power transmission mechanism, and the hydraulic pump assembly is arranged between the driving motor and the clutch;

or, the driving motor is arranged at one side of the inner cavity of the shell, the clutch is arranged near one side of the driving motor, and the hydraulic pump assembly is arranged between the clutch and the clutch driven gear.

By changing the positional relationship of the drive motor, clutch, and hydraulic pump assembly, the spatial arrangement is made more compact.

As another embodiment of the present utility model, the hybrid driving apparatus further includes a hydraulic pump assembly including a driving pulley fixedly mounted on the driving shaft, a hydraulic pump driven pulley connected to the driving pulley through a hydraulic pump belt, and a hydraulic pump assembly mounted on the hydraulic pump assembly, the hydraulic pump assembly being mounted on the housing. The hydraulic pump assembly plays a role in oil cooling, lubrication and cooling, so that the device operates more stably; the hydraulic pump assembly is connected to the drive shaft to facilitate spatial deployment by varying the source of power of the hydraulic pump assembly.

Further, the driving motor is located at one side of the inner cavity of the shell, the clutch is arranged towards one side close to the driving motor, and the hydraulic pump assembly is located at a position between the driving motor and the clutch. By changing the positional relationship of the drive motor, clutch, and hydraulic pump assembly, the spatial arrangement is made more compact.

In the utility model, an output ratchet wheel is fixedly assembled on the output shaft, and a differential mechanism assembly is connected to the output ratchet wheel. The power transmission mechanism finally transmits power out through the output ratchet wheel and can be transmitted to the differential mechanism assembly for the use of the multi-wheel drive vehicle.

Drawings

FIG. 1 is a simplified diagram of the mechanical structure of a Biedi fourth generation hybrid DM-i;

FIG. 2 is a cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of the overall structure of the present utility model;

FIG. 4 is a simplified diagram of the overall mechanical structure of the present utility model;

FIG. 5 is a power transmission route diagram for example 1 in the operating mode;

fig. 6 is a power transmission route diagram of embodiment 1 in the second operation mode;

fig. 7 is a power transmission route diagram of embodiment 1 in the third operation mode;

fig. 8 is a power transmission route chart of embodiment 1 in the fourth operation mode;

FIG. 9 is a simplified view of the overall mechanical structure of embodiment 2;

FIG. 10 is a simplified view of the overall mechanical structure of example 3;

FIG. 11 is a simplified view of the overall mechanical structure of example 4;

FIG. 12 is a simplified view of the overall mechanical structure of example 5;

FIG. 13 is a simplified view of the overall mechanical structure of example 6;

fig. 14 is a simplified view of the overall mechanical structure of example 7.

Reference numerals illustrate:

1. an engine assembly; 1a, a crankshaft; 1b, clutch driving gear; 1c, a water pump outputs a driving gear;

2. a clutch assembly; 2a, clutch outer hub; 2b, a torsion spring; 2c, clutch driven gear; 2d, a hydraulic pump driving belt pulley; 2e, clutch inner hub; 2f, clutch friction plate; 2g, clutch coupling plate; 2h, a clutch pressing plate;

3. a drive motor assembly; 3a, driving shaft; 3b, driving a motor rotor; 3c, driving the motor stator; 3d, driving the driving belt pulley;

4. a hydraulic pump assembly; 4a, a hydraulic pump belt; 4b, a hydraulic pump driven pulley; 4c, a hydraulic pump assembly;

5. a gear shifting mechanism; 5a, a gear shifting fork;

6. a power transmission mechanism; 6a, an input shaft; 6aa, a second gear drive gear; 6ab, a first gear driving gear; 6b, an output shaft; 6c, synchronizing sleeve; 6d, outputting a ratchet wheel; 6e, a second gear driven gear; 6f, a first-gear driven gear;

7. A planet row assembly; 7a, a planet carrier assembly; 7b, gear ring;

8. a generator assembly; 8a, a generator shaft; 8aa, sun gear; 8b, a generator rotor; 8c, a generator stator;

9. a water pump assembly; 9a, a water pump output driven gear; 9b, a water pump transmission shaft; 9c, a water pump assembly;

10. a housing assembly; 10a, a shell.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 2 and 3, the present utility model shows a hybrid drive device including an engine assembly 1, a clutch assembly 2, a drive motor assembly 3, a hydraulic pump assembly 4, a shift mechanism 5, a power transmission mechanism 6, a planetary row assembly 7, a generator assembly 8, a water pump assembly 9, and a housing assembly 10.

Wherein the engine assembly 1 comprises an engine and a crankshaft 1a.

The clutch assembly 2 includes a clutch, a clutch outer hub 2a, a clutch inner hub 2e, a clutch friction plate 2f, a clutch partner plate 2g, a clutch pressure plate 2h, a clutch gear pair (clutch driving gear 1b, clutch driven gear 2 c), and a torsion spring 2b.

The drive motor assembly 3 includes a drive motor, a drive shaft 3a, a drive motor rotor 3b, a drive motor stator 3c, and a drive pulley 3d.

The hydraulic pump assembly 4 includes a hydraulic pump driving pulley 2d, a hydraulic pump belt 4a, a hydraulic pump driven pulley 4b, and a hydraulic pump assembly 4c.

The shift mechanism 5 includes a shift fork 5a and a synchronizing sleeve 6c.

The power transmission mechanism 6 includes an input shaft 6a, a first-gear drive gear 6ab, a second-gear drive gear 6aa, an output shaft 6b, a second-gear driven gear 6e, a first-gear driven gear 6f, and an output ratchet 6d.

The planet row assembly member 7 includes a planet carrier assembly member 7a, a ring gear 7b, and a sun gear 8aa.

The generator assembly 8 includes a generator shaft 8a, a generator rotor 8b, and a generator stator 8c.

The water pump assembly 9 includes a water pump output driving gear 1c, a water pump output driven gear 9a, a water pump transmission shaft 9b, and a water pump assembly 9c.

The housing assembly 10 includes a housing 10a.

The engine assembly 1, the clutch assembly 2, the driving motor assembly 3, the hydraulic pump assembly 4, the gear shifting mechanism 5, the power transmission mechanism 6, the planet row assembly 7, the generator assembly 8 and the water pump assembly 9 are all arranged in the shell assembly 10.

Example 1:

as shown in fig. 4, a hybrid power driving device comprises a housing 10a, wherein an engine, a crankshaft 1a, a generator shaft 8a, a clutch shaft, a driving motor, a driving shaft 3a and a power transmission mechanism 6 are arranged in the housing 10a, the power transmission mechanism 6 comprises an input shaft 6a and an output shaft 6b which are mutually parallel, one end of the generator shaft 8a is arranged on the housing 10a, the other end of the generator shaft 8a is coaxially connected with one end of the crankshaft 1a in a transmission manner, the other end of the crankshaft 1a is in transmission connection with the clutch through a clutch gear pair, the clutch shaft, the driving shaft 3a and the input shaft 6a are coaxially connected in a triaxial transmission manner, and the axial direction of the input shaft 6a is parallel to the axial direction of the crankshaft 1 a; the generator is located one side of the inner cavity of the shell 10a, the driving motor is located the other side of the inner cavity of the shell 10a, the power transmission mechanism 6 is distributed in the inner cavity of the shell 10a between the generator and the driving motor, and the clutch and the power transmission mechanism 6 are arranged on the same side of the engine side by side.

As shown in fig. 4, from the structural position distribution shown in the drawing, in the inner cavity of the casing 10a, the engine is located at a middle position, the generator is located at the left side of the engine, and the generator shaft 8a is coaxially arranged with the crankshaft 1 a; the driving motor is positioned on the right side of the engine, and the axial direction of the driving shaft 3a is parallel to the axial direction of the crankshaft 1 a; the clutch is positioned on the left side of the driving motor, and the clutch is positioned on the left side of the clutch gear pair; the power transmission mechanism 6 is located below the engine, the power transmission mechanism 6 is located on the left side of the clutch, the power transmission mechanism 6 comprises an input shaft 6a and an output shaft 6b which are arranged in parallel, the input shaft 6a, the clutch shaft and the driving shaft 3a are in triaxial coaxial transmission connection, and the clutch and the power transmission mechanism are arranged side by side and located below the engine. In the utility model, the clutch and the power transmission mechanism 6 are not arranged on the right side of the engine, but are arranged below the engine, so that the axial length of the power driving device is not occupied, namely, the axial space is saved, the space arrangement is convenient, the space is reasonably utilized, the structure among the structures is compact, and the problem that the axial length of the prior art is long and the space arrangement is inconvenient is solved.

The clutch assembly comprises a clutch outer hub 2a and a clutch inner hub 2e, the clutch gear pair comprises a clutch driving gear 1b fixedly assembled on a crankshaft 1a and a clutch driven gear 2c fixedly assembled on a driving shaft 3a, the clutch driving gear 1b is meshed with the clutch driven gear 2c, the clutch outer hub 2a is fixedly arranged on the clutch driven gear 2c, and the clutch inner hub 2e is fixedly arranged on the driving shaft 3 a; a torsion spring 2b for damping is provided between the clutch outer hub 2a and the clutch driven gear 2 c. The clutch gear pair is arranged, so that the power of the engine crankshaft 1a is transmitted to a clutch, specifically, the clutch driven gear 2c is used for transmitting the power to the clutch outer hub 2a, the clutch inner hub 2e is fixedly arranged on the driving shaft 3a, and when the clutch is combined, the power can be transmitted to the driving shaft 3 a; in addition, by providing the torsion spring 2b, a shock absorbing effect can be provided between the clutch outer hub 2a and the clutch driven gear 2 c.

The input shaft 6a is in transmission connection with the output shaft 6b through a two-gear pair, wherein the two-gear pair is a first-gear pair and a second-gear pair respectively, the first-gear pair comprises a first-gear driving gear 6ab fixedly assembled on the input shaft 6a and a first-gear driven gear 6f fixedly assembled on the output shaft 6b, and the first-gear driving gear 6ab is meshed with the first-gear driven gear 6 f; the second gear pair includes a second driving gear 6aa fixedly mounted on the input shaft 6a and a second driven gear 6e fixedly mounted on the output shaft 6b, the second driving gear 6aa being engaged with the second driven gear 6 e; a gear shifting mechanism 5 is arranged between the first-gear driven gear 6f and the second-gear driven gear 6 e; the shift mechanism 5 includes a synchronizing sleeve 6c slidably provided on the output shaft 6b in the axial direction of the output shaft 6b and a shift fork 5a that drives the synchronizing sleeve 6c to move, the synchronizing sleeve 6c being engageable with the first-gear driven gear 6f or the second-gear driven gear 6e when slid. The power is transmitted to the power transmission mechanism 6 through two gears of gear pair transmission, and meanwhile, the rotating speed of the driving motor is reduced, so that a high-rotating-speed bearing is avoided, the problem of NVH (noise and harshness) is reduced while the problem of high cost is solved; the gear shifting mechanism 5 is realized by adopting a synchronous sleeve 6c and a gear shifting fork 5a, and has simple structure and easy operation.

The generator shaft 8a is in transmission connection with the crankshaft 1a through a planet row assembly 7, and the planet row assembly 7 comprises a sun gear 8aa fixedly assembled on the generator shaft 8a, a planet carrier fixedly connected on the crankshaft 1a and a gear ring 7b fixedly arranged on the shell 10 a. By arranging the planet row assembly 7, the power transmission between the generator and the engine can realize a large speed ratio, the rotating speed of the generator is improved, and the problem that the lifting of the generated power is limited under the condition of a certain torque is solved.

A water pump assembly 9 is arranged between the engine and the generator, the water pump assembly 9 comprises a water pump transmission shaft 9b connected to the crankshaft 1a through a water pump output gear pair in a transmission mode and a water pump assembly 9c connected with the output end of the water pump transmission shaft 9b, and the water pump assembly 9c is arranged on the shell 10 a. Through the water pump assembly 9, the water pump assembly 9 plays a role in circulating cooling down, so that the device operates more stably.

The hybrid drive device further includes a hydraulic pump assembly 4 provided in the housing 10a, the hydraulic pump assembly 4 including a hydraulic pump driving pulley 2d fixedly fitted to the clutch driven gear 2c, a hydraulic pump driven pulley 4b connected to the hydraulic pump driving pulley 2d through a hydraulic pump belt 4a, and a hydraulic pump assembly 4c, the hydraulic pump driven pulley 4b being mounted on the hydraulic pump assembly 4c, the hydraulic pump assembly 4c being mounted on the housing 10 a. Through the hydraulic pump assembly 4, the hydraulic pump assembly 4 plays a role in oil cooling, lubrication and cooling, so that the device operates more stably; the hydraulic pump assembly 4 is connected to the clutch driven gear 2c to facilitate spatial arrangement by varying the power source of the hydraulic pump assembly 4.

The driving motor is arranged on one side of the inner cavity of the shell 10a, the clutch is arranged on one side close to the power transmission mechanism 6, and the hydraulic pump assembly 4 is arranged between the driving motor and the clutch. By changing the positional relationship of the drive motor, the clutch, and the hydraulic pump assembly 4, the space arrangement is made more compact.

In addition, an output ratchet 6d is fixedly assembled on the output shaft 6b, and the power transmission mechanism 6 finally transmits power through the output ratchet 6 d.

The mode of operation of embodiment 1 of the present utility model is as follows:

operating mode one (first gear pure electric mode): in this mode, as shown in fig. 5, the battery supplies power to the driving motor, the driving motor outputs power independently, the engine and the generator do not work, and the clutch is also in a disconnected state.

When the drive motor is electrified, the cutting magnetic field drives the rotor 3b of the drive motor to rotate, power is transmitted to the motor shaft 3a, then the power is transmitted to the first-gear driving gear 6ab on the input shaft 6a through the spline connection of the motor shaft 3a and the input shaft 6a, the power is transmitted to the first-gear driven gear 6f due to the meshing of the first-gear driven gear 6f and the first-gear driving gear 6ab, at the moment, the shift fork 5a shifts the synchronizing sleeve 6c to the first-gear engaging position, so that the synchronizing sleeve 6c and the first-gear driven gear 6f are engaged together, the synchronizing sleeve 6c is connected to the output shaft 6b through the spline connection capable of axially sliding, so that the power is transmitted to the output shaft 6b from the first-gear driven gear 6f, and the output ratchet 6d is also installed on the output shaft 6b through the spline connection, so that the power is transmitted to the output ratchet 6d and then the power is output to other parts.

Since the second-gear drive gear 6aa is provided on the input shaft 6a, it rotates together with the input shaft 6a, since the second-gear driven gear 6e and the second-gear drive gear 6aa are engaged, power is transmitted to the second-gear driven gear 6e, and since the second-gear driven gear 6e is idly sleeved on the output shaft 6b, the synchronizing sleeve 6c is not engaged with the second-gear driven gear 6e, and therefore the second-gear driven gear 6e idles on the output shaft 6b, and power by the second-gear driven gear 6e is cut off.

Operating mode two (second gear pure electric mode): in this mode, as shown in fig. 6, the battery supplies power to the driving motor, the driving motor outputs power independently, the engine and the generator do not work, and the clutch is also in an off state.

When the drive motor is electrified, the cutting magnetic field drives the rotor 3b of the drive motor to rotate, power is transmitted to the motor shaft 3a, then the power is transmitted to the second-gear driving gear 6aa on the input shaft 6a through spline connection of the motor shaft 3a and the input shaft 6a, the power is transmitted to the second-gear driven gear 6e due to meshing of the second-gear driven gear 6e and the second-gear driving gear 6aa, at the moment, the shift fork 5a shifts the synchronizing sleeve 6c to a second-gear engaging position, so that the synchronizing sleeve 6c and the second-gear driven gear 6e are engaged together, the synchronizing sleeve 6c is connected to the output shaft 6b through a spline capable of axially sliding, so that the power is transmitted to the output shaft 6b from the second-gear driven gear 6e, and the output ratchet 6d is also installed on the output shaft 6b through spline connection, so that the power is transmitted to the output ratchet 6d, and then the power is output to other parts.

Since the first-gear drive gear 6ab is provided on the input shaft 6a so as to rotate together with the input shaft 6a, since the first-gear driven gear 6f is meshed with the first-gear drive gear 6ab, power is transmitted to the first-gear driven gear 6f, since the first-gear driven gear 6f is idly sleeved on the output shaft 6b, the synchronizing sleeve 6c is not engaged with the first-gear driven gear 6f at this time, the first-gear driven gear 6f idles on the output shaft 6b, and power by the first-gear driven gear 6f is cut off.

Operating mode three (series mode): in this mode, as shown in fig. 7, the battery and the generator supply power to the driving motor together (it is possible to supply power to the driving motor and the battery simultaneously), the driving motor outputs power independently, the engine only drives the generator to work for generating power, and the clutch is in a disconnected state. Compared with the pure mode, the series mode operation only increases the power generation function of the range extender.

The pure electric power transmission path is the same as the first working mode and the second working mode; the power transmission path of the power generation part is as follows: the engine runs to drive the crankshaft 1a to rotate, the crankshaft 1a is connected with the planet carrier assembly 7a through a spline, the planet carrier assembly 7a is driven to rotate, at the moment, the gear ring 7b is fixed on the shell 10a, power is transmitted to the generator shaft 8a through the sun gear 8aa, the generator rotor 8b is pressed on the generator shaft 8a in an interference mode, and therefore power is generated through the generator.

In addition, the water pump output driven gear 9a is meshed with the water pump output driving gear 1c, power is transmitted to the water pump output driven gear 9a through a gear pair, the output driven gear 9a is in interference press fit or spline connection on the water pump transmission shaft 9b, and power is transmitted to the water pump assembly 9c through the water pump transmission shaft 9 b.

In addition, the clutch driving gear 1b and the clutch driven gear 2c are connected through a gear pair, power is transmitted to the clutch driven gear 2c through the gear pair, the clutch driven gear 2c transmits power to the clutch outer hub 2a after being damped by the torsion spring 2b, and the clutch is in an open state at this time, so that power cannot be output to the clutch inner hub 2e, and power to the power transmission mechanism 6 is cut off.

Since the hydraulic pump driving pulley 2d is press-fitted on the clutch driven gear 2c with interference, power is transmitted to the hydraulic pump driving pulley 2d, and then transmitted to the hydraulic pump driven pulley 4b through the hydraulic pump belt 4a, and further transmitted to the hydraulic pump assembly 4c.

Operating mode four (parallel mode): as shown in fig. 8, in this mode, the clutch is engaged, and the engine torque is generated while the torque can be transmitted through the clutch to output power together with the driving motor. This mode of operation increases only the function of engine power output compared to the series mode.

On the basis of the series mode, the clutch assembly 2 is engaged, specifically, the clutch pressing plate 2h is pushed by the external actuating mechanism to enable the clutch friction plate 2f and the clutch pair plate 2g to be tightly attached to each other to transfer friction force, and then the power of the clutch outer hub 2a is transferred to the clutch inner hub 2e through the friction force, since the clutch inner hub 2e is connected to the driving shaft 3a through a spline, the power is transferred to the driving shaft 3a through a spline connection, then the power is transferred to the second-gear driving gear 6aa on the input shaft 6a through the spline connection of the driving shaft 3a and the input shaft 6a, since the second-gear driven gear 6e and the second-gear driving gear 6aa are connected through a gear pair, the power is transferred to the second-gear driven gear 6e, and at this time, the synchronizing sleeve 6c is shifted to the second-gear engaging position by the shift fork 5a, and the synchronizing sleeve 6c and the second-gear driven gear 6e are engaged, since the synchronizing sleeve 6c is connected to the output shaft 6b through a spline connection capable of axially sliding, the power is transferred to the output shaft 6b through the second-gear driven gear 6e, and the output shaft 6d is also connected to the other spline connection through the spline connection, and the output shaft 6d is further transferred to the power output part.

Since the first-gear drive gear 6ab is provided on the input shaft 6a so as to rotate together with the input shaft 6a, since the first-gear driven gear 6f and the first-gear drive gear 6ab are connected by a gear pair, power is transmitted to the first-gear driven gear 6f, since the first-gear driven gear 6f is idly sleeved on the output shaft 6b, the synchronizing sleeve 6c is not engaged with the first-gear driven gear 6f at this time, the first-gear driven gear 6f idly rotates on the output shaft 6b, and power by the first-gear driven gear 6f is cut off.

Example 2:

the basic structure is the same as that of embodiment 1, except that: as shown in fig. 9, the driving motor is disposed at one side of the inner cavity of the housing 10a, the clutch is disposed at one side close to the driving motor, and the hydraulic pump assembly 4 is disposed between the driving motor and the clutch. By changing the positional relationship of the drive motor, the clutch, and the hydraulic pump assembly 4, the space arrangement is made more compact.

The hydraulic pump assembly 4 includes a driving pulley 3d fixedly fitted to the driving shaft 3a, a hydraulic pump driven pulley 4b connected to the driving pulley 3d through a hydraulic pump belt 4a, and a hydraulic pump assembly 4c, the hydraulic pump driven pulley 4b being mounted on the hydraulic pump assembly 4c, the hydraulic pump assembly 4c being mounted on the housing 10 a. Through the hydraulic pump assembly 4, the hydraulic pump assembly 4 plays a role in oil cooling, lubrication and cooling, so that the device operates more stably; the hydraulic pump assembly 4 is connected to the drive shaft 3a to facilitate spatial arrangement by varying the power source of the hydraulic pump assembly 4.

Example 3:

the basic structure is the same as that of embodiment 1, except that: as shown in fig. 10, the clutch is disposed at one side of the inner cavity of the housing 10a, the driving motor is disposed at one side close to the power transmission mechanism 6, and the hydraulic pump assembly 4 is disposed between the driving motor and the clutch.

Example 4:

the basic structure is the same as that of embodiment 3, except that: as shown in fig. 11, a brake is provided on the ring gear 7b of the planetary gear set 7.

Example 5:

the basic structure is the same as that of embodiment 1, except that: as shown in fig. 12, the driving motor is disposed at one side of the inner cavity of the housing 10a, the clutch is disposed at one side near the driving motor, and the hydraulic pump assembly 4 is disposed between the clutch and the clutch driven gear 2 c. By changing the positional relationship of the drive motor, the clutch, and the hydraulic pump assembly 4, the space arrangement is made more compact.

The two-gear pair transmission between the input shaft 6a and the output shaft 6b is reduced to a single-gear pair transmission.

Example 6:

the basic structure is the same as that of embodiment 5, except that: as shown in fig. 13, the clutch is omitted to realize range extension, and the differential assembly is connected to the output ratchet wheel 6d, so that the differential assembly can be used for a multi-wheel drive vehicle.

Example 7:

the basic mechanism is the same as that of embodiment 6, except that: as shown in fig. 14, the generator shaft 8a is in transmission connection with the crankshaft 1a through an external gear pair, and the external gear pair comprises an external driving gear fixedly assembled on the crankshaft 1a and an external driven gear fixedly assembled on the generator shaft 8a, wherein the external driving gear is meshed with the external driven gear. Through external engagement cylindrical gear pair for power transmission between generator and the engine is simpler, simultaneously, can make generator shaft 8a and engine shaft not coaxial setting, the space arrangement of being convenient for, makes the structure compacter.

In the above embodiment, the positions of the driving motor, the clutch and the hydraulic pump assembly can be exchanged according to actual requirements, the structure of the transmission connection such as the planetary gear assembly, the gear pair transmission design and the like can also be changed and combined according to actual requirements, and the brake and the differential can be applied to any one embodiment without being limited thereto.

In summary, the utility model has the following advantages:

1) According to the utility model, the power transmission mechanism 6 is arranged in the inner cavity of the shell 10a between the generator and the driving motor or the clutch, the clutch and the power transmission mechanism 6 are arranged side by side on the side of the engine, the crankshaft 1a of the engine and the generator shaft 8a are coaxially arranged, and the driving shaft 3a of the driving motor and the generator shaft 8a are arranged in parallel instead of being coaxially arranged, so that the axial length of the power driving device is not occupied, namely, the axial space is saved, the space arrangement is convenient, the space is reasonably utilized, the structure between the structures is compact, and the problem that the axial length of the prior art is long and the space arrangement is inconvenient is solved;

2) The engine, the crankshaft 1a, the generator and the generator shaft 8a, the clutch, the driving motor, the driving shaft 3a and the power transmission mechanism 6 are all arranged in one shell 10a, so that the shell 10a is shared, the high integration of the structure is facilitated, the engine cavity and the power transmission mechanism 6 cavity are made into a communicated cavity in a high integration mode, and a set of lubricating oil is shared, so that the heat generated by the engine can be quickly transferred to the power transmission mechanism 6 cavity, the temperature of the lubricating oil is quickly increased, the problem of poor jointing performance of the parallel mode starting clutch and the problem of lower efficiency of the power transmission mechanism 6 in winter are solved while the light weight problem is solved, and the working efficiency of the power transmission mechanism 6 is improved;

3) The power is transmitted to the power transmission mechanism 6 through two gears of gear pair transmission, and meanwhile, the rotating speed of the driving motor is reduced, so that a high-rotating-speed bearing is avoided, the problem of NVH (noise and harshness) is reduced while the problem of high cost is solved;

4) By arranging the planet row assembly 7, the power transmission between the generator and the engine can realize a large speed ratio, the rotating speed of the generator is improved, and the problem that the lifting of the generated power is limited under the condition of a certain torque is solved;

5) Because the crankshaft 1a of the engine is not coaxially connected with the driving shaft 3a of the driving motor, and the coaxial structure can increase the manufacturing cost of parts, the crankshaft 1a of the engine is in transmission connection with the clutch and the driving motor through the clutch gear pair, and the manufacturing cost of the parts can be reduced.

It should be noted that all directional indications (such as up, down, left, right, front, rear, inner, outer … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indication is changed accordingly.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (12)

1. A hybrid drive device comprising a housing (10 a), characterized in that: the novel electric power transmission device is characterized in that an engine, a crankshaft (1 a), a generator shaft (8 a), a clutch shaft, a driving motor, a driving shaft (3 a) and a power transmission mechanism (6) are arranged in the shell (10 a), the power transmission mechanism (6) comprises an input shaft (6 a) and an output shaft (6 b) which are arranged in parallel, one end of the generator shaft (8 a) is arranged on the shell (10 a), the other end of the generator shaft (8 a) is coaxially connected with one end of the crankshaft (1 a) in a transmission manner, the other end of the crankshaft (1 a) is in transmission connection with the clutch through a clutch gear pair, the clutch shaft, the driving shaft (3 a) and the input shaft (6 a) are coaxially connected in a transmission manner, and the axial direction of the input shaft (6 a) is parallel to the axial direction of the crankshaft (1 a); the power generator is located on one side of the inner cavity of the shell (10 a), the driving motor or the clutch is located on the other side of the inner cavity of the shell (10 a), the power transmission mechanism (6) is distributed in the inner cavity of the shell (10 a) between the power generator and the driving motor or the clutch, and the clutch and the power transmission mechanism (6) are arranged on the same side of the engine side by side.

2. The hybrid drive device according to claim 1, characterized in that: the clutch gear pair comprises a clutch driving gear (1 b) fixedly assembled on a crankshaft (1 a) and a clutch driven gear (2 c) fixedly assembled on a driving shaft (3 a), the clutch driving gear (1 b) is meshed with the clutch driven gear (2 c), the clutch outer hub (2 a) is fixedly installed on the clutch driven gear (2 c), and the clutch inner hub (2 e) is fixedly installed on the driving shaft (3 a).

3. The hybrid drive device according to claim 1 or 2, characterized in that: the input shaft (6 a) is in transmission connection with the output shaft (6 b) through a two-gear pair, the two-gear pair is a first-gear pair and a second-gear pair respectively, the first-gear pair comprises a first-gear driving gear (6 ab) fixedly assembled on the input shaft (6 a) and a first-gear driven gear (6 f) fixedly assembled on the output shaft (6 b), and the first-gear driving gear (6 ab) is meshed with the first-gear driven gear (6 f); the second gear pair comprises a second driving gear (6 aa) fixedly assembled on the input shaft (6 a) and a second driven gear (6 e) fixedly assembled on the output shaft (6 b), and the second driving gear (6 aa) is meshed with the second driven gear (6 e); a gear shifting mechanism (5) is arranged between the first-gear driven gear (6 f) and the second-gear driven gear (6 e); the gear shifting mechanism (5) comprises a synchronizing sleeve (6 c) which can be arranged on the output shaft (6 b) in a sliding manner along the axis direction of the output shaft (6 b) and a gear shifting fork (5 a) which drives the synchronizing sleeve (6 c) to move, wherein the synchronizing sleeve (6 c) can be engaged with the first-gear driven gear (6 f) or the second-gear driven gear (6 e) when sliding.

4. The hybrid drive device according to claim 1 or 2, characterized in that: the input shaft (6 a) and the output shaft (6 b) are in transmission connection through a single gear pair.

5. The hybrid drive device according to claim 1, characterized in that: the generator shaft (8 a) is in transmission connection with the crankshaft (1 a) through a planet row assembly (7), and the planet row assembly (7) comprises a sun gear (8 aa) fixedly assembled on the generator shaft (8 a), a planet carrier fixedly connected on the crankshaft (1 a) and a gear ring (7 b) fixedly arranged on the shell (10 a); a brake is arranged on the gear ring (7 b).

6. The hybrid drive device according to claim 1, characterized in that: the generator shaft (8 a) is in transmission connection with the crankshaft (1 a) through an external meshing cylindrical gear pair, the external meshing cylindrical gear pair comprises an external meshing driving gear fixedly assembled on the crankshaft (1 a) and an external meshing driven gear fixedly assembled on the generator shaft (8 a), and the external meshing driving gear is meshed with the external meshing driven gear.

7. The hybrid drive device according to claim 1, characterized in that: a water pump assembly (9) is arranged between the engine and the generator, the water pump assembly (9) comprises a water pump transmission shaft (9 b) connected to the crankshaft (1 a) through a water pump output gear pair in a transmission mode and a water pump assembly (9 c) connected with the output end of the water pump transmission shaft (9 b), and the water pump assembly (9 c) is mounted on the shell (10 a).

8. The hybrid drive device according to claim 2, characterized in that: the hybrid power driving device further comprises a hydraulic pump assembly (4) arranged in the shell (10 a), the hydraulic pump assembly (4) comprises a hydraulic pump driving pulley (2 d) connected to the clutch gear pair in a transmission mode, a hydraulic pump driven pulley (4 b) connected with the hydraulic pump driving pulley (2 d) through a hydraulic pump belt (4 a) and a hydraulic pump assembly (4 c), the hydraulic pump driven pulley (4 b) is installed on the hydraulic pump assembly (4 c), and the hydraulic pump assembly (4 c) is installed on the shell (10 a).

9. The hybrid drive device according to claim 8, characterized in that: the driving motor is arranged on one side of an inner cavity of the shell (10 a), the clutch is arranged on one side close to the power transmission mechanism (6), and the hydraulic pump assembly (4) is arranged between the driving motor and the clutch;

or the clutch is arranged at one side of the inner cavity of the shell (10 a), the driving motor is arranged at one side close to the power transmission mechanism (6), and the hydraulic pump assembly (4) is arranged between the driving motor and the clutch;

or, the driving motor is arranged at one side of the inner cavity of the shell (10 a), the clutch is arranged at one side close to the driving motor, and the hydraulic pump assembly (4) is arranged between the clutch and the clutch driven gear (2 c).

10. The hybrid drive device according to claim 1, characterized in that: the hybrid power driving device further comprises a hydraulic pump assembly (4), wherein the hydraulic pump assembly (4) comprises a driving pulley (3 d) fixedly assembled on the driving shaft (3 a), a hydraulic pump driven pulley (4 b) connected with the driving pulley (3 d) through a hydraulic pump belt (4 a) and a hydraulic pump assembly (4 c), the hydraulic pump driven pulley (4 b) is installed on the hydraulic pump assembly (4 c), and the hydraulic pump assembly (4 c) is installed on the shell (10 a).

11. The hybrid drive device according to claim 10, characterized in that: the driving motor is arranged on one side of the inner cavity of the shell (10 a), the clutch is arranged towards one side close to the driving motor, and the hydraulic pump assembly (4) is arranged at a position between the driving motor and the clutch.

12. The hybrid drive device according to claim 1, characterized in that: an output ratchet wheel (6 d) is fixedly assembled on the output shaft (6 b), and a differential mechanism assembly is connected to the output ratchet wheel (6 d).

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