DE102012002870B4 - Generator and / or motor station for a system for on-demand storage and / or delivery of electrical energy - Google Patents

Abstract

Generator and / or motor station (1) for a system for the demand-based storage and / or dispensing of electrical energy, comprising a substantially vertical Förderarbeitsstrecke between a predefined high position and a predefined low position of the system, at least one inductive component and a magnetic working means (21 ), wherein the at least one inductive component as a stator and the magnetic working means (21) are designed as a rotor, so that in a generator operation during a movement of the rotor under the influence of gravity from the high position to the low position electric discharge energy in the stator is induced and / or in an engine operation in a movement of the rotor from the low position to the high position under the influence of an electromagnetic force generated by the stator electrical energy is converted into potential altitude energy for the rotor, characterized in that at least one spring device vorges is marriage, which has a station-side attachment end and a rotor-side attachment end and is arranged such that the spring device is tensioned at a generator movement of the rotor from the high position to the low position to increase their potential spring energy and at a motor movement of the rotor from the low position to the high position the potential energy stored in the spring means is released to give the runner potential height energy.

Description

The invention relates to a generator and / or motor station for a system for on-demand storage and / or delivery of electrical energy. Such a plant is also called energy storage power plant. An energy storage power plant can be designed as a micro system, as a plant of small and medium power up to a large system for storing and / or output of electrical energy of several megawatts per hour, even several thousand megawatts per hour.

In the system according to the invention for storing and / or dispensing electrical energy as required permanent-magnetic material or permanent magnetic objects is used as a working medium, which are transported for example in a closed or open conveyor system between a high position and a low position. During generator operation of a movement from the high position to the low position, electrical output energy is induced in inductive components, such as a coil or stator. In such a system, electrical energy is stored by the fact that the permanent magnetic working fluid is transported in the high position by means of electromagnetic forces.

Depending on requirements, the permanent-magnetic working medium can fall past the coils in the upper position in order to produce the desired electrical output energy.

A method and apparatus for storing and dispensing electrical energy as needed is disclosed in U.S.Pat DE 10 2010 034 174 A1 described. A permanent magnetic working means is stored at a predefined height and moved under the influence of the shear force past an electrical conductor, wherein electrical discharge energy is induced in the electrical conductor.

From the DE 10 2008 003 693 A1 is a mechanical Hubspeicherkraftwerk with gear hub known. A runner is guided along a substantially vertical conveyor line.

The US 2011/0 278 856 A1 discloses a shock absorber for power generation. The shock absorber includes an elastic member, a gear set having a first non-return gear and a second non-return gear, and an electric generator driven by the first non-return gear to generate power when the elastic member is compressed.

From the US 2009 0 021 023 A1 is a shelf storage system with at least two shelf units known. Each rack unit has its own movable stacker crane with electric drive motors and with an electrical power supply circuit to supply the shelf units with electrical energy.

In the WO 02/103 201 A1 a power generation system is described which has a movable platform. The movement of heavy vehicles on the moving platform, which are connected to a hydraulic or pneumatic pressure system, generates electrical energy.

The DE 26 18 046 A1 shows a method and apparatus for utilizing stored potential energy in unloading goods.

An example of a generic system is in the Belgian patent application BE 101 63 63 A6 described, according to the electrical energy is generated by the fact that a substantially torpedo-shaped permanent magnet freely falls under the influence of gravity from the high position to the low position within and along a coil. During the passage of the permanent-magnetic working medium, electrical output energy is induced in the coil. The permanent magnets are blown from the low position into the high position by means of a pneumatic flow system in the high position, for which a correspondingly high energy input is necessary.

It is an object of the invention to overcome the disadvantages of the prior art, in particular to provide a system for storing electrical energy and / or on-demand delivery of electrical energy, in which the highest possible efficiency is achieved.

This object is solved by the features of claim 1. Thereafter, a generator and / or motor station for a system for on-demand storage and / or on-demand delivery of electrical energy to form. The generator and / or motor station can also be used for a transport system. The generator and / or motor station comprises a substantially vertical conveying work path between a predefined high position and a predefined low position of the system, at least one inductive component, such as a coil, and a magnetic working means. The at least one inductive component is designed as a stator and the magnetic working means is designed as a rotor, so that in a generator operation during a movement of the rotor under the influence of gravity from the high position to the low position electrical output energy is induced in the stator and / or in an engine operation in the movement of the rotor from the low position to the high position under the influence of an electromagnetic force generated by the stator electrical Energy is converted into potential altitude energy for the runner. According to the invention, at least one spring device is provided, which has a station-side attachment end and a rotor-side attachment end and is arranged such that the spring device is tensioned during a generator movement of the rotor from the high position to the low position to increase the potential energy and at a motor movement of the rotor of the Low position in the high position of the potential energy stored in the spring device is discharged to give the runner potential altitude energy. In this way, a large part of the kinetic energy, which could fizzle when the magnetic working medium falls down, is absorbed in a spring device, which part of the energy can, if necessary, be reused later. The magnetic working medium may be permanent magnetic or have an electromagnetic magnetic field. For example, the magnetic working means may comprise a metal core wrapped by a coil.

In a preferred embodiment of the invention, the runner has a transport container, which may for example be designed to receive a load, such as sand, permanent magnetic material, persons, and / or in particular consists at least partially of permanent magnetic material.

In a preferred embodiment of the invention, a spring device is formed from a plurality of identical spring elements, in particular with the same spring constant. As spring elements, for example coil springs can be used. The station-side attachment points of the spring elements may preferably be arranged substantially at the same conveying work path height, so that the force acting on the rotor spring force of each spring element at each Förderarbeitsstreckenstelle is the same size.

In the development of the invention, the generator and / or motor station has a plurality of vertically stacked, separate motor-generator sections, which are each equipped with a stator, such as a coil. At least one spring device is provided for each motor-generator section.

Preferably, a transfer device is provided in the region between two motor-generator sections through which the rotor leaves the influence of one spring device and comes into the influence of the other spring device.

In the development of the invention, at least one gripping device is set up in the course of the conveying path, which can engage and hold the rotor at a predetermined position along the conveying work path. In this way, the rotor can be held at the intermediate position of the conveyor line. Preferably, the gripping device is designed in accordance with a check valve, which allows a transport of the rotor in the height direction and locks in the opposite direction.

Preferably, the gripping device has at least two separately mounted pivot arms. An end portion of the pivot arm is station-held by means of a spring member, wherein the opposite end is designed for gripping the rotor. In the area between the two end regions a particular station-fixed pivot bearing is provided. In the development of the invention, in each case a gripping device is arranged between two superimposed, separate motor-generator sections.

Preferred embodiments of the inventions are specified in the subclaims.

Further characteristics, advantages and features of the invention will become apparent from the present description of preferred embodiments of the invention with reference to the accompanying drawings, in which:

1a a schematic side view of a system according to the invention in a first operating state shortly before the generator operation begins;

1b a schematic side view of the system in a Zwischengeneratorbetriebszustand;

1c a schematic side view of the system according to 1 in another intermediate generator mode;

2a a schematic side view of an embodiment of a gripping device of a system according to the invention shortly before the working fluid comes into the sphere of influence of the gripping device;

2 B a schematic side view of the embodiment of the gripping device according to 5a in an operating state in which a working means has just been moved by the gripping direction in an opening direction;

2c a schematic side view of the embodiment of the gripping device according to 5a in an operating state in which a working means is held by the gripping device.

3a a schematic side view of another embodiment of an inventive System in an operating state shortly before the start of engine operation; and

3b a schematic side view of the system according to 3a , in an operating state, in which the working means are held by gripping devices.

In the 1a to 1c is a side view of a generator and / or motor station according to the invention generally with the reference numeral 1 Mistake. In the 1a to 1c is the generator mode of the generator-motor-station 1 indicated. The station 1 has a station-fixed shaft 3 , at about the same conveyor line height, an upper pair of springs 5 and a lower pair of springs 7 attached.

At a runner-side end of the springs 5 . 7 is a permanent magnetic container 9 fastened along the conveyor working distance in the station 1 can move up and down. The container 9 should be a load 11 which can also be permanent magnetic. The permanent magnetic container 9 as well as the load 11 form in the illustrated embodiment, the magnetic working medium. Other magnetic, such as electromagnetic working means in particular combined with a permanent magnetic material are conceivable.

Along the Förderarbeitstrecke are several coils 13 arranged, which are connected to an electrical circuit.

In generator operation, the load is 11 in the upper container 9 introduced, causing under the influence of gravity of the container 9 and the load 11 the upper spring 5 be curious how in 1b is shown. When passing from the high place to the in 1b shown liner 1 becomes an electrical output energy in the upper coil 13 generated.

Through a control mechanism can be a bottom of the container 9 be opened so that the load 11 in the in 1b shown intermediate position the upper container 9 leave and waiting in the intermediate position, lower container 9 can reach whose bottom is closed. Under the influence of the gravity of the magnetic working medium (load 11 and lower tank 9 ) become the lower springs 7 strained, and the container 9 together with the load moves on the lower coil 13 over and induces electrical energy there.

Immediately after transfer of the load 11 from the upper container 9 on the lower container 9 force the upper springs 5 the upper container 9 back to the high position, causing again electrical discharge energy in the lower coil 13 is produced.

Becomes the load 11 from the lower container 9 in the low position ( 1c ), so forces the lower tensioned spring 7 the lower container 9 back to the intermediate position, as in 1a is shown, which again causes an electric discharge energy in the lower coil 13 is induced.

In the in the 1a to 1c The illustrated embodiment is the spring constant of the springs 5 . 7 so large that a return of the permanent magnetic container 9 is reached in the high position. However, the spring constant is less than the sum of the through the container 9 and the load 11 generated gravitational forces, so that with the load 11 loaded containers 9 in the intermediate position or in the low position can move.

In the 2a and 2c a further spring device arrangement is shown, which also has a gripping device 18 having. In motor operation of the generator motor station 1 the magnetic working medium arrives 21 coming out of the container 9 and the load 11 exists, in an intermediate position and is supported by two Wipparmen 23 . 25 received in the free ends of the magnetic working means and hold according to an elastic check valve, which is in 2 B and 2c is shown. The container can be connected 9 from the load 11 be separated and fall again for further use in the low position. By the gravity of the load 11 become the feathers 5 excited, at the station end of the Wipparme 23 . 25 are arranged. The Wipparme 23 . 25 are pivotable on a center bearing 27 held.

In the 3a to 3e is the motor generator station 1 shown in engine operation, wherein a gripping device 18 with check valve function for the load according to 2a to 2c is used.

As in the 3a and b is apparent, the load is 11 from a container 9 taken in the low position, which is connected to a preloaded lower spring 7 connected. The same container Lastgut arrangement is held spring-loaded in the middle intermediate position. As in 3a it can be seen, even in the high position a container-load material arrangement is held spring biased.

When the Förderzyklusses trigger all three magnetic working means 9 . 11 transported to the next higher position by the springs 5 . 7 to be relaxed. A holding device 35 is activated by pivoting pivot arms to a horizontal position, as in FIG 3b is shown around the load is to hold in the intermediate position. The container 9 is returned to the low position under the influence of its gravity, to the next load 11 to be able to record. Also the load goods arranged higher up 11 be by appropriate holding device 38 held in an intermediate position.

Should the gravity of the container 9 Because of the spring force are not sufficient to get into the lower position, electromagnetic forces by energizing the respective coil 13 help.

The features disclosed in the foregoing description, the figures and the claims may be of importance both individually and in any combination for the realization of the invention in the various embodiments.

LIST OF REFERENCE NUMBERS

1

Generator and / or motor station

5, 7

feathers

9

permanent magnetic container

11

Lastgut

13

Kitchen sink

18

gripper

21

work equipment

23, 25

Wipparme

27

center bearing

35

holder

Claims (8)

Generator and / or motor station ( 1 ) for a system for the on-demand storage and / or delivery of electrical energy, comprising a substantially vertical conveying work path between a predefined high position and a predefined low position of the system, at least one inductive component and a magnetic working means ( 21 ), wherein the at least one inductive component as a stator and the magnetic working means ( 21 ) are designed as runners, so that in a generator operation during a movement of the rotor under the influence of gravity from the high position to the low position electrical output energy is induced in the stator and / or in an engine operation in a movement of the rotor from the low position is converted into the high position under the influence of an electromagnetic force generated by the stator electrical energy in potential altitude energy for the rotor, characterized in that at least one spring means is provided which has a station-side attachment end and a rotor-side attachment end and is arranged such that the Spring device is tensioned at a generator movement of the rotor from the high position in the low position to increase the potential spring energy and the motor energy stored in the spring device is released during a motor movement of the rotor from the low position to the high potential to the Lä to give potential energy to the shore. Generator and / or motor station ( 1 ) According to claim 1, characterized in that the rotor (a transport container 9 ), which consists in particular at least partially of permanent magnetic material. Generator and / or motor station ( 1 ) according to claim 1 or 2, characterized in that a spring device of a plurality of identical spring elements ( 5 . 7 ) is formed in particular with the same spring constant, wherein the station-side attachment points of the spring elements are arranged substantially on the same Förderarbeitsstreckenhöhe, so that the force acting on the rotor spring force of each spring element at each Förderarbeitsstreckenstelle is the same size. Generator and / or motor station ( 1 ) according to one of the preceding claims, characterized in that it comprises a plurality of mutually vertically separated, separate motor-generator sections, each equipped with a stator, wherein for each motor-generator section in each case at least one spring means is provided. Generator and / or motor station ( 1 ) according to claim 4, characterized in that in the region between two motor-generator sections, a transfer device is provided, through which the rotor leaves the influence of a spring means and comes into the influence of the other spring means. Generator and / or motor station ( 1 ) according to one of the preceding claims, characterized in that in the course of the conveying path at least one gripping device ( 18 ) is arranged, which can take the runner at a predetermined position along the conveying path and hold to hold the runner at the intermediate position of the conveyor line, wherein in particular the gripping device ( 18 ) is designed according to a check valve, which allows a transport of the rotor in one direction and locks in the opposite direction. Generator and / or motor station ( 1 ) according to claim 6, characterized in that the gripping device ( 18 ) at least two separately mounted pivot arms ( 23 . 25 ), wherein an end portion of the pivot arm by means of a spring member ( 5 ) is held and the opposite end is designed for gripping the rotor and in particular in the area between the two ends has a particular station-fixed pivot bearing. Generator and / or motor station ( 1 ) according to claim 6 or 7, characterized in that in each case a gripping device ( 18 ) is arranged between two separate motor-generator sections arranged one above the other.

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