Hybrid power drive device based on double-planetary gear

Abstract

A hybrid drive device based on a double planetary row, the device is provided with a front planetary row and a rear planetary row, the front planetary row has a sun gear P, a ring gear S, a planet carrier, and a planetary gear V, and the rear planetary row has a sun gear Q , ring gear T, planetary gear U, the sun gears P and Q of the front and rear planetary rows are connected, the front planetary carrier is connected with the rear planetary ring gear T, the internal combustion engine is connected with the ring gear S and the planetary carrier through clutches A and B respectively, and the sun The wheel P is connected to the motor, the planet carrier is connected to the gear H, the sun gear Q is connected to the motor, the sun gear P is connected to the sun gear Q, the gear H is meshed with the gear G, the gear G is connected to the output end, and the brake C brakes the ring gear S, brake E brake ring gear T. The invention has the advantages of compact structure and less transmission parts; the planetary row has the function of stepless speed change; it has the function of shifting gears while having the function of mode switching.

Description

technical field [0001] The invention relates to a power drive device, in particular to a hybrid power drive device based on a double planetary row. Background technique [0002] Due to the current increasingly tense world energy and people's growing awareness of environmental protection, the requirements for vehicle safety, energy saving, and environmental protection are getting higher and higher. However, due to the bottleneck constraints of fuel cells, motors, and controls, pure electric vehicles and fuel cell vehicles cannot be mass-produced and practically used. Therefore, hybrid vehicles have become a more suitable choice to solve the above problems. [0003] Developing a good transmission system is the first step in the research and development of hybrid electric vehicles, so the method of power synthesis and the choice of structural form are directly related to the performance of future vehicles. At present, the transmission system of domestic hybrid electric vehicle...

AI Technical Summary

Problems solved by technology

At present, the transmission system of domestic hybrid electric vehicles is only a simple improved design of series and parallel connections on the original model. There are certain limitations in energy saving, environmental protection and power improvement. The layout is not compact and there are few working modes. performance, emission and dynamics are limited, and it is difficult to meet the requirements of vehicles with large loads and large load changes

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