Four-wheel-drive power assembly of hybrid electric vehicle

Abstract

The invention discloses a four-wheel-drive power assembly of a hybrid electric vehicle. The four-wheel-drive power assembly is compact in structure. A first permanent magnet synchronous motor output shaft is fixedly connected with an engine output shaft and an input shaft. The input shaft is assembled on a left input shaft bearing and a right input shaft bearing. A first permanent magnet synchronous motor is connected to the left end of the first permanent magnet synchronous motor output shaft, the input shaft is sleeved with a needle bearing in an idle mode, the needle bearing is sleeved with an input shaft gear in an idle mode, and a clutch gear sleeve and a clutch gear shell are fixedly connected with the input shaft and the input shaft gear respectively. An intermediate shaft is assembled on a left intermediate shaft bearing and a right intermediate shaft bearing. A large intermediate shaft gear and a small intermediate shaft gear are assembled on the intermediate shaft. A front axle transmission shaft is connected with front wheels. A first differential is fixed to the middle of the front axle transmission shaft. A first main reduction gear is fixed to the first differential. A transmission shaft is assembled on an upper transmission shaft bearing and a lower transmission shaft bearing. A first driven bevel gear and a second driven bevel gear are connected with the transmission shaft. A second permanent magnet synchronous motor output shaft is assembled on bearings of a second permanent magnet synchronous motor output shaft.

Description

technical field [0001] The invention relates to a four-wheel drive transmission of a hybrid electric vehicle, in particular to a four-drive power assembly of a hybrid electric vehicle. Background technique [0002] With the increasing shortage of oil supply and the increasing environmental pollution, people are paying more and more attention to new energy vehicles. Hybrid electric vehicles have good fuel economy, low emissions, and the technology is becoming more and more mature, so the four-drive powertrain application of hybrid electric vehicles was born. [0003] The existing four-drive powertrain of a common hybrid vehicle on the market basically arranges the hybrid power system composed of the engine and the first permanent magnet synchronous motor, as well as related engines and clutches, on the front axle. The pure electric power system composed of the second permanent magnet synchronous motor and so on is arranged separately on the rear axle, and the hybrid power sy...

AI Technical Summary

Problems solved by technology

[0003] The existing four-drive powertrain of a common hybrid vehicle on the market basically arranges the hybrid power system composed of the engine and the first permanent magnet synchronous motor, as well as related engines and clutches, on the front axle. The pure electric power system composed of the second permanent magnet synchronous motor and so on is arranged separately on the rear axle, and the hybrid power system and the pure electric power system each use a separate transmission case, that is, two transmission cases are required. The main technical problems are: the hybrid power system and the pure electric power system are respectively arranged on the front axle and the rear axle, occupying a large space, the space utilization rate of the whole vehicle is low, integrated control is difficult, and the cost is also high

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