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Master-slave dual-motor transmission, drive system and electric construction vehicle

A transmission device and main motor technology, applied to electric power devices, power devices, electric vehicles, etc., can solve problems such as high cost, difficulty in continuous power coupling control of dual motors, difficulty in meeting the needs of compound drive control, etc., to achieve Low cost, improved power and economy, and improved service life

Active Publication Date: 2022-04-05
JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the dual-motor power coupling system proposed in the prior art can satisfy pure electric vehicles with a single drive configuration, it is difficult to meet the compound drive control requirements of electric engineering vehicles with two operating systems, and it is difficult to achieve dual-motor continuous driving. Power coupling control, and high cost

Method used

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  • Master-slave dual-motor transmission, drive system and electric construction vehicle
  • Master-slave dual-motor transmission, drive system and electric construction vehicle
  • Master-slave dual-motor transmission, drive system and electric construction vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] See attached figure 1 , a master-slave dual-motor transmission device, including a master motor M1, a slave motor M2, a power output shaft S-out, a forward gear clutch CF, a reverse gear clutch CR, a power coupling transmission unit, a first power transmission unit and a second power transmission unit The power transmission unit, the forward gear clutch CF and the reverse gear clutch CR are installed on the output shaft of the main motor M1, and the power coupling transmission unit is connected between the output shaft of the main motor M1 and the output shaft of the slave motor M2. The first power transmission The unit transmission is connected between the forward gear clutch CF and the power output shaft S-out, and the second power transmission unit is transmission connected between the reverse gear clutch CR and the power output shaft S-out,

[0041] The output shaft of the main motor M1 is provided with a first power output terminal, and the power output shaft S-out...

Embodiment 2

[0055] See attached figure 2 , a master-slave dual-motor drive system, including any one of the above-mentioned master-slave dual-motor transmission device, and also includes a driver operation input terminal, a low-voltage power supply, a power source and a main control system, and the signal connection of the driver operation input terminal To the main control system, the low-voltage power supply provides power for the main control system, the power source provides power for the main motor M1, and the low-voltage power supply provides power for the slave motor M2. The main control system executes the following control process, see the attached image 3 :

[0056] a. According to the driver's operation input terminal information and vehicle status information, identify the current required operation and / or driving torque and the current speed of the main motor M1 and the slave motor M2;

[0057] b. Based on the principle of maximizing motor efficiency, calculate the maximum...

Embodiment 3

[0063] See attached figure 2 , an electric engineering vehicle, including any one of the above-mentioned master-slave dual-motor drive system, and also includes a working system and a walking system, the output shaft of the main motor M1 is connected to the working system, and the power output shaft S-out is connected to the walking system , through the coupling control of the main motor M1 and the slave motor M2 to control the power output to complete the required work and driving functions.

[0064] Compared with the prior art, the advantages of the master-slave dual-motor transmission device, control system and electric engineering vehicle of the embodiment of the present invention are:

[0065] Aiming at the operation and driving power requirements of electric engineering vehicles, the present invention designs a master-slave dual-input-two-output dual-motor transmission device. The main driving motor is directly connected to the hydraulic system and connected to the driv...

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PUM

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Abstract

The invention relates to a master-slave dual-motor transmission device, a drive system and an electric engineering vehicle. The structure of a master motor and a slave motor whose output torque can be coupled is used for driving, and coordinated control is carried out through the master control system, which can meet the needs of the whole vehicle. A variety of working conditions, especially the ability to adapt to the demand for instantaneous high power, and make full use of the operating characteristics of the two motors to ensure power output and operating efficiency. On the other hand, there is a certain power redundancy design for the dual motors, and the design of the transmission device is more efficient Simple, improves the reliability and economy of the whole machine, is conducive to the integration of dual-motor drives of construction machinery, the layout of the whole vehicle is more compact, and saves space. service life.

Description

technical field [0001] The invention relates to the technical field of electric engineering vehicles, in particular to a master-slave dual-motor transmission device, a drive system and an electric engineering vehicle. Background technique [0002] In order to meet the continuous improvement of construction operation efficiency and the requirements of environmental protection, construction vehicles are gradually developing in the direction of electrification. At present, the basic configuration of engineering vehicles is to directly use the motor instead of the engine as the power source or use a separate set of motors for walking and operation. The form of a single motor will make the motor stay in the low-efficiency and low-torque area for a long time, and the economy of the vehicle is poor. However, the dual-motor system does not give full play to the flexible characteristics of motor control and the power coupling between the two under certain important working conditions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K17/02B60K17/00B60K1/02B60L15/20
CPCB60K17/02B60K17/00B60K1/02B60L15/2054Y02T10/64Y02T10/72
Inventor 薛卡詹东安梁岩岩石国国
Owner JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD
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