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Multi-mode high-power hydraulic drive system and control method based on hybrid power

A hybrid power and drive system technology, which is applied in the arrangement of multiple different prime movers and power plants of hybrid vehicles and general power plants, can solve problems such as poor flow accuracy, achieve small volume and weight costs, and achieve large The effect of power hydraulic power output and high precision control

Active Publication Date: 2021-07-02
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, hydraulic systems with instantaneous high-power output capabilities usually have poor control over flow accuracy. How to improve the control accuracy and stability of hydraulic systems while ensuring instantaneous high-power hydraulic output is also a common problem.

Method used

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  • Multi-mode high-power hydraulic drive system and control method based on hybrid power

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Embodiment Construction

[0046] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0047] In order to solve the problems of the prior art, the present invention provides a multi-mode high-power hydraulic drive system based on hybrid power, such as Figure 1-Figure 3 As shown, it includes: main power system, auxiliary power system, central control unit;

[0048] The active power system includes: engine 1, motor 3, first hydraulic pump 7, main hydraulic oil circuit 8, first clutch 2, second clutch 4, first brake lock mechanism 6, first fixed speed ratio transmission Box 5, first motor controller 10, high voltage DC bus 11, power battery 12 and discharge resistor 13;

[0049] The motor 3 is a shaft-through structure, that is, the rotating shaft of the motor rotor protrudes from the end covers on both si...

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Abstract

The invention belongs to the technical field of electromechanical-hydraulic hybrid power and hydraulic drive, and specifically relates to a hybrid-based multi-mode high-power hydraulic drive system and a control method. The hydraulic drive system includes a main power system, an auxiliary power system, and a central control unit. The active power system includes engine, motor, hydraulic pump, main hydraulic oil circuit, clutch, brake lock mechanism, fixed speed ratio transmission box, motor controller, high voltage DC bus, power battery and braking resistor, etc. power hydraulic load drive function. The auxiliary power system includes a small power motor, a motor controller, a fixed speed ratio transmission box, a brake lock mechanism, a hydraulic pump, an auxiliary hydraulic oil circuit and a one-way valve, etc., which are used to precisely control the stroke at the end of the hydraulic stroke. The control method proposed by the present invention is integrated in the central control unit to realize coordinated control of the working mode and working process of the hydraulic drive system.

Description

technical field [0001] The invention belongs to the technical field of electromechanical-hydraulic hybrid power and hydraulic drive, and in particular relates to a hybrid-based multi-mode high-power hydraulic drive system and a control method. Background technique [0002] At present, high-power hydraulic drive systems have been widely used in transportation, engineering machinery, military industry and national defense and other fields, such as dump trucks, large mining vehicles, and missile transport erection and launching vehicles. As the hydraulic load becomes larger and the requirements for the rapidity of the system become higher and higher, the instantaneous power of the required hydraulic drive system is also larger and larger. The existing vehicle-mounted hydraulic drive system mainly uses a single internal combustion engine or electric motor as the power source. To play a role in the occasion of high power demand, it is necessary to increase the volume and weight o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/40B60K6/24B60K6/26B60K6/28B60K6/38
CPCB60K6/24B60K6/26B60K6/28B60K6/38B60W20/40Y02T10/62Y02T10/92
Inventor 帅志斌王涛贺帅盖江涛周广明李春明李耀恒李勇张颖陈尧
Owner CHINA NORTH VEHICLE RES INST