Longitudinal front-drive two-gear single-motor hybrid transmission
By using a longitudinally mounted, front-wheel-drive, two-speed single-motor hybrid transmission, the problem of insufficient power and fuel economy in mid-to-large SUVs, MPVs, and pickup trucks has been solved, achieving cost reduction and convenient space layout, and is suitable for front-wheel-drive models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南通睿动新能源科技有限公司
- Filing Date
- 2025-08-07
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, electrification solutions for mid-to-large SUVs, MPVs, and pickup trucks suffer from problems such as insufficient four-wheel drive power, poor fuel economy, high cost, and difficulty in space layout, especially the front-mounted dual-motor range-extending hybrid transmission solution.
It adopts a longitudinally mounted front-wheel drive two-speed single-motor hybrid transmission, which includes components such as an engine, a first gear mechanism, a planetary gear mechanism, a motor, a clutch, a synchronizer, and a shifting mechanism. It can realize multiple working modes such as engine direct drive, motor drive, range extender power generation, power splitting, and energy recovery. By flexibly adjusting the positions of the engine and transmission, the size is reduced, making it easier to install in the vehicle.
It achieves good fuel economy and power performance, reduces costs, is suitable for front-wheel drive vehicles, and solves the problems of power and space layout difficulties in traditional solutions.
Smart Images
Figure CN224256445U_ABST
Abstract
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 two-speed single-motor hybrid transmission. Background Technology
[0002] Currently, the rapid growth of global car ownership is increasing pressure on energy, environment, and safety, accelerating the process of energy conservation and electrification in the automotive industry. However, pure electric vehicles currently face industry bottlenecks such as range anxiety, inadequate charging infrastructure, and the difficulty in achieving significant technological breakthroughs in power batteries in the short to medium term, making it difficult to meet current market demands.
[0003] Some mid-to-large SUVs (sport / suburban utility vehicles), MPVs (multi-purpose vehicles), and pickup trucks, due to their large size and weight, are traditionally rear-wheel drive vehicles. In the electrification race, these models generally use a rear-wheel pure electric drive system, with hybrid options often employing a front-mounted range extender or a front-mounted dual-motor range-extended hybrid transmission. However, a front-mounted range extender cannot achieve four-wheel drive, resulting in severely insufficient vehicle power. A front-mounted dual-motor range-extended hybrid transmission can achieve four-wheel pure electric drive, but the inability of the engine to participate in propulsion leads to poor fuel economy at high speeds. Furthermore, the dual-motor design, combined with a dual-motor controller, increases the transmission's cost, and the dual-motor design also results in a large transmission size, making front-cabin space placement difficult. Utility Model Content
[0004] The purpose of this invention is to provide a longitudinally mounted, front-wheel-drive, two-speed, single-motor hybrid transmission that can solve one or more of the aforementioned problems in the prior art.
[0005] The present invention provides a longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission, comprising: an engine, a first gear mechanism, an input shaft, a planetary gear mechanism, a motor, a first clutch, a second clutch, a synchronizer, a second gear mechanism, an intermediate shaft, a shifting mechanism, a first shifting gear set, a second shifting gear set, and an output mechanism. The engine is connected to the input shaft via the first gear mechanism, and the input shaft is connected to the motor via the planetary gear mechanism. A first clutch is provided between the planetary gear mechanism and the motor. A second clutch is provided on the planetary carrier of the planetary gear mechanism. A synchronizer is provided at the output end of the planetary gear mechanism. The output end of the planetary gear mechanism is connected to the intermediate shaft via the second gear mechanism. The intermediate shaft is connected to the output mechanism via a first shifting gear set or a second shifting gear set provided on the intermediate shaft. A shifting mechanism is provided on the intermediate shaft, and the shifting mechanism can cooperate with the first shifting gear set and the second shifting gear set to achieve gear switching.
[0006] In some embodiments, the first gear mechanism includes a first gear shaft, a first driving gear, and a first driven gear.
[0007] The first gear shaft is connected to the engine, the first driving gear is mounted on the first gear shaft, the first driven gear meshes with the first driving gear, and the first driven gear is mounted on the input shaft.
[0008] In some implementations, the planet carrier of the planetary gear mechanism is connected to the input shaft, the sun gear of the planetary gear mechanism is connected to the motor, and the ring gear of the planetary gear mechanism serves as the output end of the planetary gear mechanism.
[0009] In some embodiments, the second gear mechanism includes a second driving gear and a second driven gear. The second driving gear is connected to the output end of the planetary gear mechanism, and the second driven gear meshes with the second driving gear. The second driven gear is disposed on an intermediate shaft.
[0010] In some embodiments, the first shift gear set includes a third driving gear and a third driven gear. The third driving gear is mounted on an intermediate shaft, and the third driving gear meshes with the third driven gear. The third driven gear is connected to the output mechanism.
[0011] The second shift gear set includes a fourth driving gear and a fourth driven gear. The fourth driving gear is mounted on the intermediate shaft, and the fourth driving gear and the fourth driven gear mesh. The fourth driven gear is connected to the output mechanism.
[0012] In some embodiments, the output mechanism includes a driving bevel gear shaft, a driving bevel gear, and a driven bevel gear.
[0013] The driving bevel gear is connected to the first and second shift gear sets via the driving bevel gear shaft. The driving bevel gear meshes with the driven bevel gear, and the driven bevel gear is connected to the differential.
[0014] The longitudinally mounted front-wheel drive two-speed single-motor hybrid transmission provided by this utility model can realize multiple working modes such as engine direct drive, motor drive, range extender power generation, power splitting, and energy recovery, thereby reducing costs and having good fuel economy and power performance. The position of the engine and transmission can be flexibly adjusted through the first gear mechanism. The input shaft and motor are arranged coaxially, which helps to reduce the size and facilitate vehicle installation.
[0015] 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
[0016] 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.
[0017] Figure 1 A schematic diagram of the structure of the longitudinally mounted front-wheel drive two-speed single-motor hybrid transmission provided in this embodiment of the utility model. Detailed Implementation
[0018] 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.
[0019] 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.
[0020] Example:
[0021] Reference manual attached Figure 1 This utility model embodiment provides a longitudinally mounted front-wheel drive two-speed single-motor hybrid transmission, comprising:
[0022] Engine 1, first gear mechanism, input shaft 3, planetary gear mechanism, motor 5, first clutch 6, second clutch 7, synchronizer 8, second gear mechanism, intermediate shaft 10, shifting mechanism 11, first shifting gear set, second shifting gear set and output mechanism.
[0023] The engine 1 is connected to the input shaft 3 via a first gear mechanism. The first gear mechanism may include a first gear shaft 21, a first driving gear 22, and a first driven gear 23. The first gear shaft 21 is connected to the engine 1, the first driving gear 22 is mounted on the first gear shaft 21, the first driven gear 23 meshes with the first driving gear 22, and the first driven gear 23 is mounted on the input shaft 3. Thus, the positions of the engine and transmission can be flexibly adjusted via the first gear mechanism.
[0024] The input shaft 3 is connected to the motor 5 via a planetary gear mechanism. The planet carrier 41 of the planetary gear mechanism can be connected to the input shaft 3, and the sun gear 42 of the planetary gear mechanism can be connected to the motor 5. The ring gear 43 of the planetary gear mechanism serves as the output end of the planetary gear mechanism. The input shaft 3 and the motor shaft of the motor 5 are coaxially arranged, which effectively reduces the overall size of the transmission and facilitates vehicle installation.
[0025] A first clutch 6 is provided between the planetary gear mechanism and the motor 5. Specifically, the first clutch 6 can be located on the motor shaft of the motor 5, and the first clutch 6 can lock the motor shaft.
[0026] The planetary gear mechanism has a second clutch 7 on the planetary carrier. Specifically, the second clutch 7 can be set on the planetary carrier 41 and can lock the planetary carrier 41.
[0027] A synchronizer 8 is provided at the output end of the planetary gear mechanism. A gear ring output shaft 44 can be provided on the gear ring 43 of the planetary gear mechanism. The synchronizer 8 is provided on the gear ring output shaft 44. The synchronizer 8 can lock the output end of the planetary gear mechanism, that is, the synchronizer 8 can lock or disconnect the gear ring output shaft 44 and the housing. When the synchronizer 8 is in neutral, the gear ring output shaft 44 and the housing are disconnected.
[0028] The output end of the planetary gear mechanism is connected to the intermediate shaft 10 via a second gear mechanism. The second gear mechanism may include a second driving gear 91 and a second driven gear 92. The second driving gear 91 is connected to the output end of the planetary gear mechanism and may be mounted on the gear ring output shaft 44. The second driven gear 92 meshes with the second driving gear 91 and is mounted on the intermediate shaft 10.
[0029] The intermediate shaft 10 is connected to the output mechanism via a first or second shift gear set mounted on it. A shift mechanism 11 is mounted on the intermediate shaft 10, which can engage with the first and second shift gear sets to switch gears. When engaged with the first shift gear set, the shift mechanism 11 achieves the first gear; when engaged with the second shift gear set, it achieves the second gear; and when in neutral, it achieves neutral.
[0030] The shift mechanism 11 can be a synchronizer.
[0031] The first shift gear set may include a third driving gear 121 and a third driven gear 122. The third driving gear 121 is mounted on the intermediate shaft 10, and the third driving gear 121 and the third driven gear 122 mesh. The third driven gear 122 is connected to the output mechanism. The second shift gear set may include a fourth driving gear 131 and a fourth driven gear 132. The fourth driving gear 131 is mounted on the intermediate shaft 10, and the fourth driving gear 131 and the fourth driven gear 132 mesh. The fourth driven gear 132 is connected to the output mechanism.
[0032] The output mechanism may include a driving bevel gear shaft 141, a driving bevel gear 142, and a driven bevel gear 143. The driving bevel gear 142 is connected to the first shift gear set and the second shift gear set via the driving bevel gear shaft 141. The driving bevel gear 142 and the driven bevel gear 143 mesh, and the driven bevel gear 143 is connected to the differential 15. Thus, the driving bevel gear 142 and the driven bevel gear 143 can achieve the angular arrangement of power transmission and output from the transmission to the wheel ends, realizing a 90° spatial input and output of power. The differential 15 can realize differential speed and power output to the wheel ends.
[0033] The differential 15 is perpendicular to the drive bevel gear shaft 141, and the drive bevel gear shaft 141, the gear ring output shaft 44, and the intermediate shaft 10 are parallel to each other.
[0034] In an optional embodiment, the output shaft of engine 1 is splined to the first gear shaft 21. The first driving gear 22 can be fixedly connected to the first gear shaft 21. The first driven gear 23 can be splined to the input shaft 3. The input shaft 3 can be fixedly welded to the planetary carrier 41. The sun gear 42 can be splined to the motor shaft of motor 5, and the ring gear 43 can be splined to the ring gear output shaft 44. The synchronizer 8 can be splined to the ring gear output shaft 44, and one end of the synchronizer 8 is connected to the transmission housing. The third driven gear 122 and the fourth driven gear 132 can be splined to the driving bevel gear shaft 141.
[0035] The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission provided by this utility model can achieve the following working modes:
[0036] When the first clutch 6 locks the motor shaft, the second clutch 7 releases the planetary carrier, the synchronizer 8 is in neutral, and the shift mechanism 11 is in the first or second gear, the engine is in direct drive mode.
[0037] When the first clutch 6 releases the motor shaft, the second clutch 7 locks the planetary carrier, the synchronizer 8 is in neutral, and the shifting mechanism 11 is in the first or second gear, the motor is in direct drive mode.
[0038] When the first clutch 6 releases the motor shaft, the second clutch 7 releases the planetary carrier, the synchronizer 8 is in neutral, and the shifting mechanism 11 is in the first or second gear. At this time, it is in the power split direct drive mode.
[0039] When the first clutch 6 releases the motor shaft, the second clutch 7 releases the planetary carrier, the synchronizer 8 locks the gear ring output shaft, and the shifting mechanism 11 is in the first gear, neutral, or second gear, it is in the power generation mode.
[0040] When the vehicle is coasting, the second clutch 7 locks the planetary carrier, the first clutch 6 releases the motor shaft, the synchronizer 8 is in neutral, and the shift mechanism 11 is in the first or second gear. At this time, it is in energy recovery mode.
[0041] The longitudinally mounted front-wheel drive two-speed single-motor hybrid transmission provided by this utility model can realize multiple working modes such as engine direct drive, motor drive, range extender power generation, power splitting, and energy recovery, thereby reducing costs and having good fuel economy and power performance. The position of the engine and transmission can be flexibly adjusted through the first gear mechanism, and the input shaft and motor are arranged coaxially, which helps to reduce the size and facilitate vehicle installation. It is suitable for front-wheel drive vehicles.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] 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 longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission, characterized in that, include: Engine (1), first gear mechanism, input shaft (3), planetary gear mechanism, motor (5), first clutch (6), second clutch (7), synchronizer (8), second gear mechanism, intermediate shaft (10), shifting mechanism (11), first shifting gear set, second shifting gear set and output mechanism, The engine (1) is connected to the input shaft (3) via the first gear mechanism, and the input shaft (3) is connected to the motor (5) via the planetary gear mechanism. A first clutch (6) is provided between the planetary gear mechanism and the motor (5), and a second clutch (7) is provided on the planet carrier of the planetary gear mechanism. The synchronizer (8) is provided at the output end of the planetary gear mechanism, and the output end of the planetary gear mechanism is connected to the intermediate shaft (10) through the second gear mechanism. The intermediate shaft (10) is connected to the output mechanism through a first shift gear set or a second shift gear set disposed on the intermediate shaft (10). A shift mechanism (11) is disposed on the intermediate shaft (10), and the shift mechanism (11) can cooperate with the first shift gear set and the second shift gear set to realize gear switching.
2. The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission according to claim 1, characterized in that, The first gear mechanism includes a first gear shaft (21), a first driving gear (22), and a first driven gear (23). The first gear shaft (21) is connected to the engine (1), the first driving gear (22) is disposed on the first gear shaft (21), the first driven gear (23) meshes with the first driving gear (22), and the first driven gear (23) is disposed on the input shaft (3).
3. The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission according to claim 1, characterized in that, The planet carrier (41) of the planetary gear mechanism is connected to the input shaft (3), the sun gear (42) of the planetary gear mechanism is connected to the motor (5), and the ring gear (43) of the planetary gear mechanism serves as the output end of the planetary gear mechanism.
4. The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission according to claim 1, characterized in that, The second gear mechanism includes a second driving gear (91) and a second driven gear (92). The second driving gear (91) is connected to the output end of the planetary gear mechanism, and the second driven gear (92) meshes with the second driving gear (91). The second driven gear (92) is disposed on the intermediate shaft (10).
5. The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission according to claim 1, characterized in that, The first shift gear set includes a third driving gear (121) and a third driven gear (122). The third driving gear (121) is mounted on the intermediate shaft (10). The third driving gear (121) and the third driven gear (122) mesh with each other. The third driven gear (122) is connected to the output mechanism. The second shift gear set includes a fourth driving gear (131) and a fourth driven gear (132). The fourth driving gear (131) is disposed on the intermediate shaft (10). The fourth driving gear (131) and the fourth driven gear (132) mesh with each other. The fourth driven gear (132) is connected to the output mechanism.
6. The longitudinally mounted front-wheel-drive two-speed single-motor hybrid transmission according to claim 1, characterized in that, The output mechanism includes a driving bevel gear shaft (141), a driving bevel gear (142), and a driven bevel gear (143). The driving bevel gear (142) is connected to the first shift gear set and the second shift gear set through the driving bevel gear shaft (141). The driving bevel gear (142) meshes with the driven bevel gear (143), and the driven bevel gear (143) is connected to the differential (15).