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Method for operating a hybrid drive and hybrid drive

A driving device and hybrid driving technology, which is applied in fluid pressure actuating devices, fluid pressure actuating system components, mechanical equipment, etc., can solve problems such as loss, reduce driving heat, and improve adjustment accuracy

Inactive Publication Date: 2015-07-15
NETABTAL MASCHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, the slow movement of the cylinder also means that the valve flow is throttled more. The disadvantage is that the excess energy for use is converted into heat and lost.

Method used

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  • Method for operating a hybrid drive and hybrid drive
  • Method for operating a hybrid drive and hybrid drive
  • Method for operating a hybrid drive and hybrid drive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] exist figure 1 A specific embodiment according to the present invention is shown in .

[0025] Reference numeral 30 designates a compact hybrid drive here, which shows a hydraulic drive 2 with a double-acting cylinder piston 2a, an electric motor 1 connected to the cylinder piston 2a, and a hydraulic valve (here an on-off valve). ) 3, which is used to supply the two pressure chambers of the cylinder 2c with hydraulic fluid. The electric machine 1 is connected to a control device 10 , by means of which the operation of the electric machine 1 can be controlled and by which the electric machine 1 can be controlled as described in detail below. Furthermore, a supply line 20 is provided, via which the recovered electrical energy can be fed to other uses. For example, an intermediate circuit 22 can be provided in which recovered electrical energy can be stored until it is needed again. From the intermediate circuit 22 the electrical energy can be fed back to the electric m...

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PUM

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Abstract

A hybrid drive includes an electric motor coupled to a hydraulic drive having a double-acting hydraulic piston and a piston rod, and a substantially throttle-less valve for actuating the hydraulic drive, and a control unit for actuating the electric machine. To avoid unnecessary energy consumption, an actuating direction requested by the hybrid drive and a desired actuating force are determined, the valve is switched to a position such that the hydraulic drive is effective in the actuating direction, at least when the actuating force cannot be generated by the electric motor alone, the difference between the force generated by the hydraulic drive and the actuating force is determined, and the electric motor is operated such that the desired actuating force is achieved by adding the force generated by the motor to the force generated by the hydraulic drive, or subtracting the first from the latter.

Description

technical field [0001] The invention relates to a method for operating a hybrid drive and to such a hybrid drive. Background technique [0002] Hybrid drives are generally known for driving movable units in machine tools, in particular in die-casting machines. In the drive of plasticizing and die-casting units of die-casting machines, it is known, for example, to provide a drive for the axial feed, which consists of both electric and hydraulic sub-drives. In this regard see DE 43 44 335 C2, in which in one embodiment the drive force of the electric motor combination is supported hydraulically. [0003] A similar hydraulic and electric drive combination for axial feed is known from JP 04189525. [0004] Relatedly, reference is made to EP 760 277 with regard to the regulation method for the hydraulic support of electric drives, in which the pressure loading of the hydraulic piston is effected by means of the pressure medium accumulator when a certain control parameter is rea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/50B29C45/76F15B21/14F15B15/08F15B15/20
CPCB29C45/5008F15B15/088B29C2045/824B29C2045/7673B29C2045/5068Y02P70/10B29C45/50B29C45/76F15B21/14F15B15/08
Inventor M.诺茨M.兰克
Owner NETABTAL MASCHEN