Longitudinal front-drive hybrid transmission

Abstract

This utility model discloses a longitudinally mounted front-wheel-drive hybrid transmission, comprising: an input shaft, a first gear mechanism, a planetary gear mechanism, a generator, a second gear mechanism, a clutch, a third gear mechanism, a drive motor, and an output shaft. The input shaft is connected to the generator via the first gear mechanism and the planetary gear mechanism. The input shaft is also connected to the output shaft via the first gear mechanism, the second gear mechanism, and the clutch. The drive motor is connected to the output shaft via the third gear mechanism. The longitudinally mounted front-wheel-drive hybrid transmission provided by this utility model can improve power generation efficiency, reduce generator size, and lower costs; lower the center of gravity of the hybrid transmission in the vehicle layout, shorten the length of the hybrid transmission, and reserve more space for battery design in the vehicle; achieve direct power output from the front axle to the vehicle in longitudinally mounted models; and simultaneously realize the vehicle's power generation function, as well as the driving and kinetic energy recovery functions of the front axle.

Description

Technical Field

[0001] This utility model relates to the field of hybrid vehicle drive transmission technology, and in particular to a longitudinally mounted front-wheel drive hybrid transmission. Background Technology

[0002] Existing hybrid power systems generally adopt a transverse or longitudinal four-wheel drive drive shaft layout, which cannot meet the battery placement requirements of longitudinally mounted hybrid four-wheel drive models. Utility Model Content

[0003] The purpose of this invention is to provide a longitudinally mounted front-wheel-drive hybrid transmission that can solve one or more of the aforementioned problems in the prior art.

[0004] The longitudinally mounted front-wheel-drive hybrid transmission provided by this utility model includes: an input shaft, a first gear mechanism, a planetary gear mechanism, a generator, a second gear mechanism, a clutch, a third gear mechanism, a drive motor, and an output shaft. The input shaft is connected to the generator through the first gear mechanism and the planetary gear mechanism. The input shaft is connected to the output shaft through the first gear mechanism, the second gear mechanism, and the clutch. The clutch is used to control the on / off state of power transmission between the input shaft and the output shaft. The drive motor is connected to the output shaft through the third gear mechanism. The motor shaft of the generator, the motor shaft of the drive motor, and the input shaft are parallel.

[0005] In some implementations, a shock absorber is provided on the input shaft.

[0006] In some embodiments, the first gear mechanism includes a first gear and a second gear, the first gear meshing with the second gear, the first gear being connected to the input shaft, the second gear being arranged parallel to the input shaft, the second gear being connected to a planetary gear mechanism, and the second gear being coaxially arranged with the generator.

[0007] In some embodiments, the planetary gear mechanism includes a planet carrier, a ring gear, and a sun gear. The planetary gear mechanism is disposed between the generator and the second gear mechanism. The sun gear is connected to the generator, the second gear passes through the generator and is connected to the ring gear, the ring gear is connected to the second gear mechanism, and the planet carrier is connected to the housing.

[0008] In some embodiments, the second gear mechanism includes a third gear, a fourth gear, a fifth gear, and a sixth gear. The third gear meshes with the fourth gear, the fifth gear meshes with the sixth gear, the gear shaft of the third gear is connected to a planetary gear mechanism, the fourth gear and the fifth gear are coaxially arranged, a clutch is arranged between the fourth gear and the fifth gear, and the sixth gear is connected to the output shaft.

[0009] In some embodiments, the third gear mechanism includes a seventh gear and an eighth gear, which mesh with each other. The seventh gear is connected to the output shaft, and the eighth gear is connected to the drive motor.

[0010] In some embodiments, the third gear mechanism is connected to the output shaft via a bevel gear differential assembly. The second gear mechanism is also connected to the output shaft via a bevel gear differential assembly.

[0011] In some implementations, the bevel gear differential assembly includes an input bevel gear and an output bevel gear, with the output bevel gear positioned perpendicular to the input shaft.

[0012] In some embodiments, the output gear of the second gear mechanism and the output gear of the third gear mechanism are coaxially arranged.

[0013] The longitudinally mounted front-wheel-drive hybrid transmission provided by this utility model lowers the center of gravity of the hybrid transmission in the vehicle by offsetting the input shaft and generator. The generator generates electricity through a planetary gear mechanism, improving power generation efficiency, reducing generator size, and lowering costs. The parallel arrangement of the generator and drive motor further lowers the center of gravity of the hybrid transmission in the vehicle, shortens the length of the hybrid gearbox, and reserves more space for battery design in the vehicle. The output shaft is arranged perpendicular to the input shaft, enabling direct power output from the front axle to the vehicle in longitudinally mounted models. While realizing the vehicle's power generation function, it also realizes the driving and kinetic energy recovery functions of the front axle.

[0014] In addition, unless otherwise specified, all aspects of this utility model technical solution can be implemented by conventional means in the field. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the longitudinally mounted front-wheel-drive hybrid transmission provided in an embodiment of the present invention. Detailed Implementation

[0017] The terms “comprising” and “having”, and any variations thereof, in this specification and claims are intended to cover non-exclusive inclusion, such that a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, system, product, or device.

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example:

[0020] Reference manual attached Figure 1 This utility model embodiment provides a longitudinally mounted front-wheel drive hybrid transmission, including: an input shaft 1, a first gear mechanism, a planetary gear mechanism 3, a generator 4, a second gear mechanism, a clutch 6, a third gear mechanism, a drive motor 8, and an output shaft 9.

[0021] The input shaft 1 is connected to the engine 13, and a shock absorber 10 can be installed on the input shaft 1 to filter out torque fluctuations of the engine 13 or the generator 4.

[0022] The input shaft 1 is connected to the generator 4 via a first gear mechanism and a planetary gear mechanism 3. Specifically, the end of the input shaft 1 that is not connected to the engine 13 is connected to the first gear mechanism.

[0023] The first gear mechanism may include a first gear 21 and a second gear 22. The first gear 21 meshes with the second gear 22. The first gear 21 is connected to the input shaft 1. The second gear 22 is arranged parallel to the input shaft 1. The second gear 22 is coaxially arranged with the generator 4. The second gear 22 is connected to the planetary gear mechanism 3. The generator 4 is arranged between the second gear 22 and the planetary gear mechanism 3.

[0024] The planetary gear mechanism 3 may include a planet carrier P, a ring gear R, and a sun gear S. The planetary gear mechanism 3 is disposed between the generator 4 and the second gear mechanism. The sun gear S is connected to the generator 4. The second gear 22 passes through the generator 4 and is connected to the ring gear R. The ring gear R is connected to the second gear mechanism. The planet carrier P is connected to the hybrid transmission housing and is fixed.

[0025] Therefore, engine 13 can drive generator 4 to generate electricity through the first gear mechanism and planetary gear mechanism 3.

[0026] The input shaft 1 is connected to the output shaft 9 through a first gear mechanism, a second gear mechanism, and a clutch 6. The clutch 6 is used to control the on / off state of power transmission between the input shaft 1 and the output shaft 9.

[0027] The second gear mechanism may include a third gear 51, a fourth gear 52, a fifth gear 53, and a sixth gear 54. The third gear 51 meshes with the fourth gear 52, and the fifth gear 53 meshes with the sixth gear 54. A planetary gear mechanism 3 is disposed between the generator 4 and the third gear 51, with the gear shaft of the third gear 51 connected to the gear ring R of the planetary gear mechanism 3. The fourth gear 52 and the fifth gear 53 are coaxially arranged, and a clutch 6 is disposed between the fourth gear 52 and the fifth gear 53. The gear shafts of the fourth gear 52 and the fifth gear 53 are parallel to the input shaft 1, and the sixth gear 54 is connected to the output shaft 9.

[0028] The third gear mechanism may include a seventh gear 71 and an eighth gear 72, which mesh with each other. The seventh gear 71 is connected to the output shaft 9, and the eighth gear 72 is connected to the drive motor 8.

[0029] The motor shaft of the drive motor 8 is arranged parallel to the input shaft 1, and the drive motor 8 is connected to the output shaft 9 through a third gear mechanism. The drive motor 8 can output power sequentially through the eighth gear 72 and the seventh gear 71. The motor shaft of the generator 4 is arranged parallel to the motor shaft of the drive motor 8, and the eighth gear 72 is coaxial with the drive motor 8.

[0030] A bevel gear differential assembly can be installed between the third gear mechanism and the output shaft 9; that is, a bevel gear differential assembly is installed between the seventh gear 71 and the output shaft 9. Thus, the third gear mechanism is connected to the output shaft 9 via the bevel gear differential assembly to achieve power output.

[0031] A bevel gear differential assembly can be installed between the second gear mechanism and the output shaft 9. That is, a bevel gear differential assembly is installed between the sixth gear 54 and the output shaft 9. Thus, the second gear mechanism is connected to the output shaft 9 through the bevel gear differential assembly to achieve power output.

[0032] Specifically, the bevel gear differential assembly may include an input bevel gear 11 and an output bevel gear 12. The sixth gear 54, the seventh gear 71, and the input bevel gear 11 can be coaxially arranged. The output bevel gear 12 is connected to the output shaft 9 and is arranged perpendicular to the input shaft 1, thereby enabling the hybrid transmission to directly drive the front wheels.

[0033] In an optional embodiment, the bevel gear differential assembly may be located on the left side of the hybrid transmission.

[0034] In an optional embodiment, the drive motor 8 may be located on the right side of the bevel gear differential assembly.

[0035] The longitudinally mounted front-wheel-drive hybrid transmission provided in this embodiment of the invention can achieve the following modes:

[0036] When the vehicle is running on pure electric power, the engine 13 stops, the clutch 6 is disengaged, and the drive motor 8 outputs power through the eighth gear 72, the seventh gear 71, the input bevel gear 11, and the output bevel gear 12 to realize the forward and reverse functions of the vehicle.

[0037] When the vehicle is driving at low speeds or accelerating rapidly in hybrid mode, clutch 6 is disengaged, and the front axle operates in series. Generator 4 starts engine 13 via first gear 21, second gear 22, and planetary gear mechanism 3. After engine 13 starts, it drives generator 4 to generate electricity via first gear 21, second gear 22, and planetary gear mechanism 3. The electric power drives drive motor 8 to output power via eighth gear 72, seventh gear 71, input bevel gear 11, and output bevel gear 12, resulting in good overall vehicle power performance.

[0038] When the vehicle is in hybrid high-speed mode, clutch 6 is engaged, and the front axle operates in parallel mode: engine 13 drives the wheels through first gear 21, second gear 22, third gear 51, fourth gear 52, clutch 6, fifth gear 53, sixth gear 54, input bevel gear 11, and output bevel gear 12. Drive motor 8 outputs power or regenerates power through eighth gear 72, seventh gear 71, input bevel gear 11, and output bevel gear 12, resulting in better fuel economy for the entire vehicle.

[0039] When the vehicle decelerates, the drive motor 8 recovers kinetic energy through the eighth gear 72, the seventh gear 71, the input bevel gear 11, and the output bevel gear 12.

[0040] When the vehicle is stationary and generating electricity while parked, the clutch 6 is engaged, the engine 13 is running, and the generator 4 is driven to generate electricity through the first gear 21, the second gear 22 and the planetary gear mechanism 3.

[0041] The longitudinally mounted front-wheel-drive hybrid transmission provided by this utility model has the following beneficial effects:

[0042] The input shaft and generator are offset through a first gear mechanism, lowering the center of gravity of the hybrid transmission in the vehicle. The generator generates electricity through a planetary gear mechanism, improving efficiency, reducing size, and lowering cost. An integrated bevel gear differential assembly increases the integration of the front axle hybrid system, reducing size and cost. The parallel arrangement of the generator and drive motor further lowers the center of gravity of the hybrid transmission, shortens its length, and provides more space for battery design. The output shaft is perpendicular to the input shaft, i.e., perpendicular to the engine crankshaft, enabling direct power output from the front axle to the vehicle in longitudinally mounted models. This design achieves both vehicle power generation and front axle drive and kinetic energy recovery. Suitable for four-wheel drive vehicles such as pickups or SUVs, this design achieves integrated and miniaturized powertrain design, reducing overall vehicle cost.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale, and techniques, methods, and devices known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and devices should be considered part of the specification.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0046] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A longitudinal front drive hybrid transmission, characterized in that, include: The system comprises an input shaft (1), a first gear mechanism, a planetary gear mechanism (3), a generator (4), a second gear mechanism, a clutch (6), a third gear mechanism, a drive motor (8), and an output shaft (9). The input shaft (1) is connected to the generator (4) through the first gear mechanism and the planetary gear mechanism (3). The input shaft (1) is connected to the output shaft (9) via a first gear mechanism, a second gear mechanism, and a clutch (6). The clutch (6) is used to control the on / off state of power transmission between the input shaft (1) and the output shaft (9). The drive motor (8) is connected to the output shaft (9) via the third gear mechanism. The motor shaft of the generator (4), the motor shaft of the drive motor (8), and the input shaft are parallel.

2. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, A shock absorber (10) is provided on the input shaft (1).

3. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, The first gear mechanism includes a first gear (21) and a second gear (22). The first gear (21) meshes with the second gear (22). The first gear (21) is connected to the input shaft (1). The second gear (22) is arranged parallel to the input shaft (1). The second gear (22) is connected to the planetary gear mechanism (3). The second gear (22) is coaxially arranged with the generator (4).

4. The longitudinally mounted front drive hybrid transmission of claim 3, wherein, The planetary gear mechanism (3) includes a planet carrier, a ring gear, and a sun gear. The planetary gear mechanism (3) is disposed between the generator (4) and the second gear mechanism. The sun gear is connected to the generator (4). The second gear (22) passes through the generator (4) and is connected to the ring gear. The ring gear is connected to the second gear mechanism. The planet carrier is connected to the housing.

5. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, The second gear mechanism includes a third gear (51), a fourth gear (52), a fifth gear (53), and a sixth gear (54). The third gear (51) meshes with the fourth gear (52), and the fifth gear (53) meshes with the sixth gear (54). The gear shaft of the third gear (51) is connected to the planetary gear mechanism (3). The fourth gear (52) and the fifth gear (53) are coaxially arranged. The clutch (6) is arranged between the fourth gear (52) and the fifth gear (53). The sixth gear (54) is connected to the output shaft (9).

6. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, The third gear mechanism includes a seventh gear (71) and an eighth gear (72), which mesh with each other. The seventh gear (71) is connected to the output shaft (9), and the eighth gear (72) is connected to the drive motor (8).

7. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, The third gear mechanism is connected to the output shaft (9) via a bevel gear differential assembly, and the second gear mechanism is connected to the output shaft (9) via a bevel gear differential assembly.

8. The longitudinally mounted front drive hybrid transmission of claim 7, wherein, The bevel gear differential assembly includes an input bevel gear (11) and an output bevel gear (12), the output bevel gear (12) being arranged perpendicularly to the input shaft (1).

9. The longitudinally mounted front drive hybrid transmission of claim 1, wherein, The output gear of the second gear mechanism and the output gear of the third gear mechanism are coaxially arranged.

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