A single-motor hybrid electric vehicle multi-mode coupling power transmission system
A technology of hybrid electric vehicles and power transmission systems, which is applied to the layout of multiple different prime movers, power devices, and air pressure power devices of general power devices, and can solve the problems of inability to adjust the engine working range, affecting system economic performance, and engine failure. Inefficiency and other problems, to reduce the loss of conversion efficiency, solve the low load efficiency and improve the effect of acceleration performance
Active Publication Date: 2021-04-06
CHONGQING UNIV
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Problems solved by technology
However, when the system is under low load, the working range of the engine cannot be adjusted through motor speed regulation, which makes the engine inefficient and affects the economic performance of the entire system
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[0023] 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.
[0024] This implementation is basically as figure 1 As mentioned above, the multi-mode coupling power transmission system of a single-motor hybrid electric vehicle includes an engine 15, a first planetary gear mechanism, a second planetary gear mechanism, a first brake 10, a second brake 19, a power battery 1, a motor 32, and a main reduction gear Device and differential assembly 31, the first planetary gear mechanism is composed of the first ring gear 3, the first planetary gear 26, the first planet carrier 27, and the first sun gear 28, and the second planetary gear mechanism is composed of the second ring gear 7. The second planetary gear 23, the second planetary carri...
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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 of the motor and the engine by controlling the engagement of the two clutches and the two brakes to realize the coupling of the motor and the engine speed and the coupling of the torque of the motor and the engine, which solves the problem of low engine load efficiency and reduces the 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 transmission system of a single-motor hybrid power vehicle. Background technique [0002] With its advantages of low consumption and low pollution, new energy vehicles have become an important direction of automobile development. Among them, pure electric vehicles are limited by battery technology bottlenecks, short cruising range, and high vehicle manufacturing costs are the main reasons why pure electric vehicles cannot be widely used. As a transition model between traditional fuel vehicles and pure electric vehicles, hybrid vehicles have some advantages of both traditional fuel vehicles and pure electric vehicles. Compared with traditional fuel vehicles, the fuel economy of hybrid vehicles has been significantly improved, a...
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IPC IPC(8): B60K6/365B60K6/38
CPCB60K6/365B60K6/38
Inventor 胡建军蒋星月彭桃郑玲玲牛喜渊熊松松
Owner CHONGQING UNIV