Multi-speed-ratio multi-mode hybrid power system and driving mode thereof

Abstract

The invention discloses a multi-speed-ratio multi-mode hybrid power system and a driving mode thereof. An output shaft of an engine is connected with a first electric motor through a first electrically-controlled clutch; an output shaft of the first electric motor is connected with a first input shaft of a gear box; an output shaft of a second electric motor is connected with a second input shaft of the gear box; a second electrically-controlled clutch is arranged between the first input shaft of the gear box and the second input shaft of the gear box; even-number gears and odd-number gears are arranged in the gear box; the even-number gears are arranged on the first input shaft of the gear box; and the odd-number gears are arranged on the second output shaft of the gear box. By the means, multiple driving modes are realized, the energy is saved and the emission is reduced; the double advantages of travel route increasing type pure electric and plug-in hybrid power driving are realized; and the congestion pure electric driving of city working condition can be satisfied, and the large-power driving output of high-speed working condition can be satisfied.

Description

technical field [0001] The invention relates to the field of automobile power drive, in particular to a multi-speed-ratio multi-mode hybrid power system and its driving method. Background technique [0002] The hybrid drive system is the research focus of the automobile industry because of its good fuel-saving effect. [0003] Since the hybrid power system is based on the traditional engine drive system, the drive and working conditions are adjusted by adding a motor, so as to optimize the economic performance of the system. Difficulty driving. Therefore, how to design the hybrid drive system structure becomes particularly important. A good drive system coupling structure can simplify the system complexity and operation difficulty, and increase the system's realizability. [0004] The current mainstream deep hybrid structure is Prius of Toyota Motor and Volt of General Motors, both of them adopt planetary gear structure, the design is ingenious, but the structure is relati...

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Problems solved by technology

[0004] The current mainstream deep hybrid structure is Prius of Toyota Motor and Volt of General Motors, both of them adopt planetary gear structure, the design is ingenious, but the structure is relatively complicated; Among them, Volt has added multiple clutches compared with Prius, although it has added a range extender drive mode, but it makes the system more complicated; another common mid-mix ISG structure is to add a drive motor between the engine and the gearbox. Transient control of the response becomes complicated

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