Single Motor Hybrid Electric Vehicle Multimode Coupling Powertrain
A technology of hybrid electric vehicle and power transmission system, which is applied to the multi-mode coupling power transmission system of single-motor hybrid electric vehicle, the driving and braking device of the hydraulic hybrid power system, and the electric field, can solve the problem of affecting economic performance and adjust the working range of the engine. , low engine efficiency and other problems, to achieve the effect of solving low load efficiency, improving acceleration performance, and reducing conversion efficiency loss
Active Publication Date: 2021-02-09
CHONGQING UNIV
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Problems solved by technology
The layout of this scheme is simple, and it can conveniently realize the torque coupling between the engine and the motor or the motor is driven separately. However, when the system is under low load, the working range of the engine cannot be adjusted through the motor speed regulation, which makes the engine low in efficiency and affects the economic performance of the entire system.
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[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.
[0023] This implementation is basically as figure 1 As described above, the multi-mode coupling power transmission system of a single-motor hybrid electric vehicle includes an engine 1, a first planetary gear mechanism, a second planetary gear mechanism, a final reducer and a differential assembly 22 and a motor 33, and the first planetary gear mechanism It consists of the first sun gear 3, the first planetary gear 4, the first ring gear 5, and the first planetary carrier 6. The second planetary gear mechanism consists of the second ring gear 9, the second planetary gear 10, the second planetary carrier 11, The second sun gear 29 is formed, the output shaft of the engine ...
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The invention relates to a multi-mode coupling power transmission system of a single-motor hybrid electric vehicle, which belongs to the technical field of new energy vehicle power assembly components, including an engine, a motor, two sets of planetary gear mechanisms, two clutches, two brakes, several gears and Transmission shaft, main reducer and differential assembly, etc. The present invention changes the coupling mode between the motor and the engine by controlling whether the two clutches and two brakes are engaged or not, so as to realize the coupling between the motor and the engine speed and the coupling between the motor and the engine torque, which improves the acceleration performance of the system and solves the problem of low engine speed. The problem of low load efficiency and reduce the loss of system path conversion efficiency.
Description
technical field [0001] The invention belongs to the technical field of new energy vehicle power assembly components, and relates to a driving and braking device of an electric-hydraulic hybrid power system, in particular to a multi-mode coupling power transmission system of a single-motor hybrid power vehicle. Background technique [0002] At present, in the hybrid power system, the hybrid power system with dual motors and engines as the power source has many power sources, high cost, and large energy conversion loss in the system path; while the hybrid power system with single motor and engine as the power source has problems. When the engine is under low load, the efficiency is low, and the energy loss is serious. [0003] A Chinese patent with application number CN201621192050.5 is a new type of hybrid coupling system, including: engine; clutch, generator, drive motor, first gear and second gear, and the first gear is controlled by a synchronizer Or the second gear is sy...
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IPC IPC(8): B60K6/365B60K6/44B60K6/38
CPCB60K6/365B60K6/38B60K6/44B60K2006/381Y02T10/62
Inventor 胡建军蒋星月陶俊龙梅博查俊林赵伟
Owner CHONGQING UNIV