Single-motor hybrid electric vehicle multi-mode coupling power drive system
A technology of hybrid electric vehicles and power drive, which is applied to the arrangement of multiple different prime movers of hybrid electric vehicles, motor vehicles, and general power plants, etc., and can solve the problems of adjusting the working range of the engine, failing to reduce the working efficiency of the engine, etc. Achieve the effect of solving low load efficiency, improving acceleration performance, and reducing system path conversion efficiency loss
Active Publication Date: 2021-03-16
CHONGQING UNIV
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Problems solved by technology
The layout of the scheme is simple, and it can conveniently realize the pure electric drive mode with two gears and five hybrid drive modes, but it cannot adjust the working range of the engine when the system is under low load through the motor, thereby reducing the working efficiency of the engine and reducing the system economy
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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 Said, single-motor hybrid vehicle multi-mode coupling power drive system, including the engine 15, the first planetary gear mechanism, the second planetary gear mechanism, the first brake 10, the second brake 19, the motor assembly 1, the final reducer and The differential gear assembly 14, the first planetary gear mechanism is mainly composed of the first ring gear 11, the first planetary gear 12, the first planet carrier 13, and the first sun gear 16, and the second planetary gear mechanism is mainly composed of the second sun gear 2. The second ring gear 3, the second planetary gear 4, and the second planetary carrier...
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The invention relates to a multi-mode coupling power driving system of a single-motor hybrid electric vehicle and belongs to the technical field of new energy vehicle power assembly components. The system comprises an engine, two planetary gear mechanisms, two brakes, two clutches, a motor assembly, a main speed reducer and a differential mechanism assembly, a number of gears and the like. By controlling whether the connection between the two clutches and the two brakes is realized, the coupled mode of the motor and the engine, and the position of the motor relative to the transmission are changed, the speed coupling and torque coupling between the motor and the rotating speed of the engine are realized, the acceleration performance of the system is improved, the problem that the low-loadefficiency of an engine is low is solved, and the system path conversion efficiency loss is reduced.
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 drive system of a single-motor hybrid power vehicle. Background technique [0002] As one of the main research directions of the world's automobiles, new energy vehicles have advantages such as low energy consumption. Among new energy vehicles, pure electric vehicles are limited by the development of power batteries, and hydrogen fuel cell vehicles are limited by the way to obtain hydrogen fuel and storage methods, so the current development is limited. Hybrid vehicles are mainly powered by fuel, which improves energy utilization and reduces pollution compared with traditional vehicles. Therefore, at present, automobile companies basically enter into hybrid vehicles. Among the hybrid vehicles currently on the market, there are...
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IPC IPC(8): B60K6/365B60K6/44
CPCB60K6/365B60K6/44Y02T10/62
Inventor 蒋星月胡建军熊松松郑科彭桃郑玲玲
Owner CHONGQING UNIV