Powertrain for a vehicle and vehicle
By employing planetary gear sets and clutch control technology in the powertrain, diversified power coupling is achieved, solving the problem of a single power coupling method, improving power performance and transmission efficiency under power supply conditions, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HYCET TRANSMISSION SYST (JIANGSU) CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
The powertrain has a single power coupling method, which makes it difficult to flexibly distribute and control power according to different driving conditions. This results in low efficiency of the engine and motor working together under power depletion conditions, and a significant decrease in the overall vehicle power. At the same time, the hydraulic torque converter has low energy transfer efficiency, high losses, and high manufacturing costs.
By replacing the hydraulic torque converter with a planetary gear set, and controlling the engagement and disengagement of the first and second clutches, diversified coupling of engine and motor power is achieved. The power distribution function of the planetary gear set is used to rationally allocate power, and power is transmitted through gear meshing. The power status is measured in conjunction with the resolver stator and resolver rotor.
It enables flexible allocation and control of power according to driving conditions, improves the power coordination efficiency under power depletion conditions, reduces transmission losses and manufacturing costs, and enhances the overall vehicle power performance and energy utilization efficiency.
Smart Images
Figure CN224510865U_ABST
Abstract
Claims
1. A powertrain for a vehicle, characterized in that, include: The motor (11) includes a rotor (111) and a stator (112), the stator (112) being disposed radially outside the rotor (111); A planetary gear assembly (12) is disposed radially inside the rotor (111) and includes a sun gear (121), a planet carrier (122), and a ring gear (123) that cooperate with each other. The sun gear (121) and the ring gear (123) are selectively engaged or disengaged from each other by a first clutch (13). One of the sun gear (121) and the ring gear (123) is connected to the rotor (111). An engine (15) is located at one end of the planetary gear assembly (12), and the engine (15) is provided with an input shaft (151), which is selectively connected to the sun gear (121) and the other of the ring gear (123) via a second clutch (14); Output shaft (16) is connected to the planet carrier (122).
2. The powertrain of claim 1, wherein, The first clutch (13) and the second clutch (14) are spaced apart along the axial direction of the output shaft (16), and the planetary gear assembly (12) is disposed between the first clutch (13) and the second clutch (14).
3. The powertrain of claim 2, wherein, The first clutch (13) includes a first inner hub (131) and a first outer hub (132) that can be selectively engaged or disengaged from each other. The first inner hub (131) is fixedly connected to the gear ring (123), and the first outer hub (132) is fixedly connected to the sun gear (121) and the rotor (111), respectively. The second clutch (14) includes a second inner hub (141) and a second outer hub (142) that can be selectively engaged or disengaged from each other, the second inner hub (141) being fixedly connected to the input shaft (151) and the second outer hub (142) being fixedly connected to the gear ring (123).
4. The powertrain of claim 3, wherein, The first inner hub (131), the gear ring (123), and the second outer hub (142) are constructed as a single integral part.
5. The powertrain of claim 3, wherein, include: A first housing (171) is formed with a first through hole suitable for the input shaft (151) to pass through; The second shell (172) is at least partially covered on the outer periphery of the stator (112) and one end is connected to the first shell (171). The third housing (173) has a second through hole for the output shaft (16) to pass through, and the third housing (173) is connected to the other end of the second housing (172).
6. The powertrain of claim 5, wherein, The first housing (171) has a first oil inlet and a first oil passage (1711) connected to the first oil inlet, and the first oil passage (1711) is connected to the second clutch (14); The second housing (172) has a second oil inlet and a second oil passage (1721) connected to the second oil inlet, and the second oil passage (1721) is connected to the first clutch (13).
7. The powertrain of claim 5, wherein, Also includes: Support bearings (18) are sleeved on the outer periphery of the output shaft (16) and are configured to be multiple bearings spaced apart axially on the output shaft (16). Any one of the support bearings (18) is connected to the first housing (171) or the second housing (172). The output shaft (16) has an oil outlet (161) and a third oil passage (162) communicating with the oil outlet (161). The third oil passage (162) extends axially and the oil outlet (161) is configured to be a plurality of spaced apart in the axial direction of the output shaft (16), and at least one of the oil outlets (161) is located between two adjacent support bearings (18).
8. The powertrain of claim 5, wherein, Also includes: A resolver stator (191) is fixedly disposed on the second housing (172). A resolver rotor (192) is fixedly disposed on the first outer hub (132) and is radially opposite to the resolver stator (191). The resolver rotor (192) is adapted to rotate relative to the resolver stator (191) under the drive of the motor (11).
9. The powertrain of claim 1, wherein, The input shaft (151), the output shaft (16), the sun gear (121), and the rotor (111) are arranged coaxially.
10. A vehicle, characterized in that, Includes the powertrain described in any one of claims 1-9.