Multi-mode hybrid power special transmission

Abstract

The invention discloses a multi-mode transmission special for hybrid power. The multi-mode transmission comprises an input shaft, a first planetary gear train, a second planetary gear train, an intermediate shaft, a differential mechanism, a first clutch, a second clutch, a first brake and a second brake. The input shaft is connected with an engine through a torque limiting shock absorber; the first planetary gear train comprises a sun gear A, a planet gear A, a planet carrier A and a gear ring A, the planet gear A is arranged between the sun gear A and the gear ring A and installed on the planet carrier A, and the planet gear A is meshed with the sun gear A and the gear ring A; the sun gear A is mounted on the input shaft; the second planetary gear train comprises a sun gear B, a planet gear B, a planet carrier B and a gear ring B. The invention has the beneficial effects that through the arrangement of the first clutch, the second clutch, the first brake and the second brake, the fixed connection mode of the first planetary gear train and the second planetary gear train is changed, static elements in the planetary gear trains are changed, and various transmission ratios are achieved under the condition that no extra gear pair is additionally arranged.

Description

technical field [0001] The invention relates to automobile power equipment, in particular to a special transmission for multi-mode hybrid power. Background technique [0002] At present, with the rapid development of electrification in the automotive industry and the gradual increase in the market share of new energy vehicles, the trend of electrification of transmissions is becoming more and more obvious. The technical routes in the field of hybrid transmissions can be divided into two categories: add-on hybrid transmissions and special hybrid transmissions. Among them, the add-on hybrid transmission is a hybrid powertrain composed of one or two motors added to the traditional transmission. ; The essence of the dedicated hybrid transmission is to realize its core function by means of electric drive, and the electromechanical component is the central component of the structure and is an indispensable part. The special hybrid transmission is a new configuration specially red...

AI Technical Summary

Problems solved by technology

At present, hybrid power transmission drive devices have also appeared, but none of them can meet the requirements of multiple working conditions at the same time. For example, Chinese patent document CN105128647A relates to a multi-mode hybrid power transmission drive device, which discloses that three-stage planetary gears are used in the transmission system to realize power. Changes in transmission and drive modes

However, this transmission drive device needs to be equipped with two motors to achieve different drive modes, the structure is complex, and the direct drive of the engine cannot be realized; the selection of transmission ratios is small, and it cannot meet the needs of multi-speed ratios under different working conditions

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