Parallel-connection type hydraulic-electro hybrid power driving system

A hybrid and drive system technology, applied in hybrid vehicles, power plants, electric vehicles, etc., can solve the problem that energy storage devices are difficult to meet the requirements of high power density and high energy density, low braking energy recovery rate, and the use of components. Short life and other problems, to achieve the effect of solving the difficulty of instantaneous charging and discharging of large current, simple structure and high reliability

Active Publication Date: 2012-07-11
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Existing hybrid vehicles generally have problems such as low braking energy recovery rate, short service life of components, poor reliability, and difficulty in meeting the requirements of high power density and high energy density for energy storage devices.

Method used

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  • Parallel-connection type hydraulic-electro hybrid power driving system
  • Parallel-connection type hydraulic-electro hybrid power driving system

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Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: The power drive system includes an engine 1, a clutch 2, a transmission 3, a high-pressure hydraulic energy storage 4, a hydraulic accumulator assembly 5, a two-position two-way electro-hydraulic reversing valve 6, an overflow valve 7, and a pressure reducing valve 8 , drive axle 9, hydraulic pump / motor 10, fuel tank 11, electro-hydraulic servo 12, variable cylinder 13, hydraulic pump / motor control assembly 14, electromagnetic clutch 15, battery 16, inverter 17, motor 18, torque coupler 19 and central controller 20;

[0021]The engine 1 is mechanically connected to the clutch 2 and the transmission 3 in turn, the input shaft of the torque coupling 19 is mechanically connected to the output shaft of the transmission 3, the first output shaft 19-1 of the torque coupling 19 is mechanically connected to one end of the transmission shaft, and the other end of the transmission shaft It is connected with the input end of drive axle 9, the second output shaft 19-2...

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Abstract

The invention relates to a parallel-connection type hydraulic-electro hybrid power driving system, belonging to a driving system of a vehicle. An engine of the power driving system is sequentially and mechanically connected with a clutch and a speed changer; an input shaft of a torque coupler is mechanically connected with an output shaft of the speed changer; an inverter is respectively connected with a motor and a storage battery, and the other end of the motor is sequentially and mechanically connected with output shafts of an electromagnetic clutch and a hydraulic pump / motor; an oil inletport of an overflow valve is communicated with an oil way port of high-pressure hydraulic energy storage; an oil inlet port of a hydraulic pump / motor control assembly is communicated with an oil outlet port of a reducing valve; the oil outlet port of the hydraulic pump / motor, the oil outlet port of the hydraulic pump / motor control assembly and the oil outlet port of the overflow valve are communicated with an oil tank; and the oil outlet port of a two-position and two-way electro-hydraulic directional valve is communicated with the oil inlet port of the hydraulic pump / motor. The invention hasthe advantages of simple structure, mature technology, high reliability, low cost, attention of low-speed area and high-speed area of the vehicle, improvement of the power performance of the vehicle and elongation of the service life of the vehicle.

Description

technical field [0001] The invention relates to a vehicle drive system, in particular to a parallel hydraulic-electric hybrid drive system. Background technique [0002] At present, the drive system of hybrid electric vehicles is mainly divided into three modes: series, parallel and hybrid. The hybrid system adopts a gear coupling transmission structure and is equipped with a variable speed system. The system structure is complex, there are many components, and the industrialization is relatively difficult. Therefore, hybrid vehicles mostly use series or parallel power drive systems. However, there are many energy conversion links in the series type, and the overall efficiency is not very high, so the parallel type is widely used. Hybrid vehicles require energy storage devices to be able to recover and release a large amount of power in a short period of time, and have relatively high power density and energy density. At present, most of the energy storage devices of hybr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/48
CPCY02T10/6221Y02T10/62
Inventor 景军清罗衍领孙辉孟庆勇
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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