WO2020128539A1 - Gravity energy storing system - Google Patents

Gravity energy storing system Download PDF

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Publication number
WO2020128539A1
WO2020128539A1 PCT/HU2018/000060 HU2018000060W WO2020128539A1 WO 2020128539 A1 WO2020128539 A1 WO 2020128539A1 HU 2018000060 W HU2018000060 W HU 2018000060W WO 2020128539 A1 WO2020128539 A1 WO 2020128539A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
electric motor
casing
column
energy storing
Prior art date
Application number
PCT/HU2018/000060
Other languages
French (fr)
Inventor
Tamás SZIKRA
Kálmán SZIKRA
Norbert Szikra
Original Assignee
Szikra Tamas
Szikra Kalman
Norbert Szikra
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Szikra Tamas, Szikra Kalman, Norbert Szikra filed Critical Szikra Tamas
Publication of WO2020128539A1 publication Critical patent/WO2020128539A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G3/00—Other motors, e.g. gravity or inertia motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

  • the subject of the utility model is a gravity energy storing system, being appropriate for storing the produced abundant energy and discharging the stored energy, if it is needed.
  • the key point of the gravity energy storing system according to the utility model is that a weight can be moved vertically, with the help of the motor operable as a generator fixed to the weight, as compared to the vertical column passing through the weight and mounted with a toothed rack.
  • Toothed driving is used for instance for moving of outdoor elevators and raising of the gate valve of sluices.
  • the gate valve of the sluices includes pinions rotating in place and the moving toothed rack.
  • the outdoor lift shown in document with Publication Number CN206219015 includes four pieces of static vertical toothed racks, which are connected to the pinions mounted on the comers of the lift carriage and the pinions are driven by the electric motor fixed to the lift carriage.
  • using of toothed rack driving in the gravity energy storing systems has not been known so far.
  • Our target with the utility model is to establish a gravity energy storing system that would resist the extreme weather conditions and is more durable than the systems that can be learned from the above documents.
  • Our aim also includes our intention to connect the some versions of the utility model directly to a solar cell, located in a space-saving way; so, the solar cell must be arranged above the casing and the solar cell must be connected to the electric motor.
  • the weight and the casing must be of the form of a square prism if we wish to place several gravity energy storing systems next to each other with greater energy density.
  • the utility model is a gravity energy storing system for storing electric power.
  • the utility model includes a weight, an electric motor equipped with a gearbox and an electromechanical brake that can also be used as a generator, as well as an inverter connected to the electric motor and a control unit in signal connection with the electric motor. It is characteristic for the utility model that a vertical column passes through the centre of the weight, whose lower end is dipped in the earth and the above ground part of it is much higher than the weight. There is a toothed rack on the above ground part of the column; here connect the teeth of the pinion.
  • the pinion is fixed on a driving shaft.
  • the driving shaft is supported with two bearings. The bearings are fixed to the weight and the pinion is between them.
  • One end of the driving shaft connects to the shaft of the electric motor through the gearbox.
  • the electric motor is fixed to the weight.
  • the components of the system are surrounded with a casing to protect against dust and water and to provide for acoustic insulation.
  • the control unit is in signal relation with the electromechanical brake and the inverter.
  • the gravity energy storing system there is a solar cell above the casing, and it is in electric connection with the electric motor.
  • the weight and the casing are cylindrical, and the weight is a concrete block.
  • the weight and the casing are of square prism shape.
  • Figure 1 is the top view of a preferred embodiment of the gravity energy storing system according to the utility model
  • Figure 2 is the cross section of a preferred embodiment of the gravity energy storing system according to the utility model along line A-A shown on Figure 1 ,
  • Figure 3 is the slanted view of a preferred embodiment of the gravity energy storing system
  • Figure 1 shows the top view of a preferred embodiment of the gravity energy storing system.
  • the casing 10 is cylindrical.
  • Figure 1 also shows line A-A used for creating the cross-section shown on Figure 2.
  • Line A-A is drawn so that its middle, arched part bypasses the parts under the casing, so the cross-section on Figure 2 shows their view.
  • Figure 3 shows an embodiment of the utility model, where there is a solar cell above the casing.
  • the solar cell is slanted and it has rectangular shape.
  • FIG. 1 is a steel I-profile beam.
  • the weight 1 and the casing 10 are cylindrical.
  • the weight 1 is made of concrete.
  • the electromechanical brake 4 is connected to the casing and the shaft of the electric motor 3.
  • the gearbox 5 is fixed to the casing of the electromechanical brake.
  • the two supports 9 and the electric motor 3 are fixed to the top the weight 1.
  • the elements of the gravity energy storing system are supplied with the control signal by the control unit. If there is energy abundance, then the control unit elevators the weight 1 by the operation of the electric motor 3, so the abundant energy will be stored as potential energy. If there is lack of energy, then the control unit lowers the weight 1 during generator operation of the electric motor and with the speed regulated by the electromechanical brake 4.
  • the electromechanical brake 4 is operated by the control unit, when there is no energy abundance. The control unit operates the electromechanical brake 4 with such a brake force, that the electric motor 3 operated in generator mode can exactly generate the required electric power.
  • Greater energy storing capacity may be reached by higher construction, heavier 1 weight and connection and coordinated operation of several systems.
  • lifting the weight 1 with pinion and rack is more resistant to weather, it is more durable than the lifting the weight 1 with rope, spindle and pulley used in the known solutions;
  • the advantage of the embodiment where the weight 1 and the casing 10 is of the shape of a square prism is that by arranging several systems in an evenly spaced grid we can achieve the highest energy density.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The subject of the invention is a gravity energy storing system, being appropriate for storing the produced abundant energy and discharging the stored energy, if it is needed. The key point of the invention is that an electric motor (3) that can be used also as a generator, and two supports (9) are fixed to a weight (1), to which a driving shaft (8) is connected through bearings; a pinion (7) is fixed on the driving shaft (8) between the supports (9). The pinion (7) engages a toothed rack (5) that is fixed to a column (2). The column (2) passes through the centre of the weight (1) and is connected to it with a linear bearing. One end of the driving shaft (8) connects to the shaft of the electric motor (3) through a gearbox (5); The electric motor (3) is equipped with an electromechanical brake (4) and an inverter is connected to it. The inverter, the electric motor (3) and the electromechanical brake (4) are in signal connection with a control unit. The components of the system are surrounded with a casing (10) to protect against dust and water and to provide for acoustic insulation.

Description

Gravity energy storing system
The subject of the utility model is a gravity energy storing system, being appropriate for storing the produced abundant energy and discharging the stored energy, if it is needed. The key point of the gravity energy storing system according to the utility model is that a weight can be moved vertically, with the help of the motor operable as a generator fixed to the weight, as compared to the vertical column passing through the weight and mounted with a toothed rack.
There are several examples for energy storing based on the principle of gravitation. All of them are based on moving one or more weights with a motor and generator between two different sea levels. The most common solution is when a weight is hanged on a rope and the other end of the rope is connected to a spindle. The shaft of the spindle connects - through the gearbox - to a generator equipped with a brake and a motor or a motor which can be used as a generator. Such solutions are shown e.g. in documents with Publication Numbers GB2506133, DE202009008618, GB2438416, DE4135440, DE102007057323, W02010049492 and US2012085984. The solutions using rope have the disadvantage that they are less weather-resistant, so in case of extreme weather conditions they wear earlier. In outdoor applications, where weather-resistance is important toothed rack driving is preferred. Toothed driving is used for instance for moving of outdoor elevators and raising of the gate valve of sluices. The gate valve of the sluices includes pinions rotating in place and the moving toothed rack. The outdoor lift shown in document with Publication Number CN206219015 includes four pieces of static vertical toothed racks, which are connected to the pinions mounted on the comers of the lift carriage and the pinions are driven by the electric motor fixed to the lift carriage. However, using of toothed rack driving in the gravity energy storing systems has not been known so far.
Our target with the utility model is to establish a gravity energy storing system that would resist the extreme weather conditions and is more durable than the systems that can be learned from the above documents.
Our solution is based on the recognition that the pinion and rack drive is a more weather resistant and more durable solution than towing of the mass with a rope. In addition, lifting of the weight with a single toothed rack makes easier stmctural construction possible, as compared to the constructions used for moving outdoor lifts with more toothed racks. In order to minimalize the friction losses, the toothed rack must pass through the centre of mass of the weight, and linear bearing must be installed between the column holding the toothed rack and the weight. Our further aim is to protect the utility model against dust and water and to make it silent, so the utility model must be supplied with a casing against dust and water and suitable for acoustic insulation.
Our aim also includes our intention to connect the some versions of the utility model directly to a solar cell, located in a space-saving way; so, the solar cell must be arranged above the casing and the solar cell must be connected to the electric motor. The weight and the casing must be of the form of a square prism if we wish to place several gravity energy storing systems next to each other with greater energy density.
However, if our aim is to produce a gravity energy storing system, according to the utility model, with simple manufacturing technology and cheaply, then the weight and the casing must have cylindrical shape and the weight should be made of concrete.
The utility model is a gravity energy storing system for storing electric power. The utility model includes a weight, an electric motor equipped with a gearbox and an electromechanical brake that can also be used as a generator, as well as an inverter connected to the electric motor and a control unit in signal connection with the electric motor. It is characteristic for the utility model that a vertical column passes through the centre of the weight, whose lower end is dipped in the earth and the above ground part of it is much higher than the weight. There is a toothed rack on the above ground part of the column; here connect the teeth of the pinion. The pinion is fixed on a driving shaft. The driving shaft is supported with two bearings. The bearings are fixed to the weight and the pinion is between them. One end of the driving shaft connects to the shaft of the electric motor through the gearbox. The electric motor is fixed to the weight. The components of the system are surrounded with a casing to protect against dust and water and to provide for acoustic insulation. The control unit is in signal relation with the electromechanical brake and the inverter.
In a preferred embodiment of the gravity energy storing system, according to the utility model, there is a solar cell above the casing, and it is in electric connection with the electric motor.
In another preferred embodiment of the gravity energy storing system, according to the utility model, the weight and the casing are cylindrical, and the weight is a concrete block. In another preferred embodiment of the gravity energy storing system, according to the utility model, the weight and the casing are of square prism shape.
The utility model is shown by drawings, where
• Figure 1 is the top view of a preferred embodiment of the gravity energy storing system according to the utility model,
• Figure 2 is the cross section of a preferred embodiment of the gravity energy storing system according to the utility model along line A-A shown on Figure 1 ,
• Figure 3 is the slanted view of a preferred embodiment of the gravity energy storing system
Figure 1 shows the top view of a preferred embodiment of the gravity energy storing system. In this embodiment the casing 10 is cylindrical. Figure 1 also shows line A-A used for creating the cross-section shown on Figure 2. Line A-A is drawn so that its middle, arched part bypasses the parts under the casing, so the cross-section on Figure 2 shows their view.
It is visible on Figure 2 that the electric motor 3 and the two supports 9 are fixed to the top of the weight 1, the electromechanical brake 4 is fixed to the electric motor 3 and the gearbox 5 connected to the electromechanical brake 4. The two supports 9 are to the right and to the left of the pinion 7 on the driven shaft 8. The lower end of toothed rack 6 is above the ground; its upper end is under the top of column 2. The bottom of column 2 is fixed by socketing.
Figure 3 shows an embodiment of the utility model, where there is a solar cell above the casing. The solar cell is slanted and it has rectangular shape.
A preferred embodiment of the gravity energy storing system according to the utility model can be described as follows. Column 2 is a steel I-profile beam. The weight 1 and the casing 10 are cylindrical. The weight 1 is made of concrete. The electromechanical brake 4 is connected to the casing and the shaft of the electric motor 3. The gearbox 5 is fixed to the casing of the electromechanical brake. The two supports 9 and the electric motor 3 are fixed to the top the weight 1.
The elements of the gravity energy storing system, according to the utility model, are supplied with the control signal by the control unit. If there is energy abundance, then the control unit elevators the weight 1 by the operation of the electric motor 3, so the abundant energy will be stored as potential energy. If there is lack of energy, then the control unit lowers the weight 1 during generator operation of the electric motor and with the speed regulated by the electromechanical brake 4. The electromechanical brake 4 is operated by the control unit, when there is no energy abundance. The control unit operates the electromechanical brake 4 with such a brake force, that the electric motor 3 operated in generator mode can exactly generate the required electric power.
Greater energy storing capacity may be reached by higher construction, heavier 1 weight and connection and coordinated operation of several systems.
Technical benefit of the utility model as compared to the state-of-art of the technology:
• lifting the weight 1 with pinion and rack is more resistant to weather, it is more durable than the lifting the weight 1 with rope, spindle and pulley used in the known solutions;
• thanks to the single toothed rack passing through the centre of the weight 1, the pinion and rack drive moving the weight 1 can be produced more easily than the drive of the outdoor elevators;
• the system protected from environmental effects and is of silent operation thanks to the acoustically insulated casing 10 that is protected against dust and water; • the embodiment with solar cell above the casing has the benefit of space-saving location of the renewable energy resource connecting to the system and the solar cell can be connected to the system with a short cable;
• the benefit of the embodiment where the weight 1 is a cylindrical concrete block and the casing 10 is cylindrical is the simple manufacturing technology and the cheap basic materials, so it can be economically performed;
• the advantage of the embodiment where the weight 1 and the casing 10 is of the shape of a square prism is that by arranging several systems in an evenly spaced grid we can achieve the highest energy density.
List of the reference signs - weight
- column
- electric motor
- electromechanical brake
- gearbox
- toothed rack
- pinion
- driving shaft
- support
0- casing
1- solar cell

Claims

Claims
1. Gravity energy storing system that includes a weight ( 1 ), an electric motor (3), which is operable as a generator, having an electromechanical brake (4) and a gearbox (5), and an inverter connected to the electric motor (3) and a control unit being in signal connection with the electric motor (3) characterized in that
- a column (2) passes through the centre of the weight (1);
- there is a linear bearing between the weight (1) and the column (2);
- the column 2 stands vertically, and its lower end is dipped in the earth;
- the above ground section of the column (2) is much higher than the weight (1);
- there is a toothed rack (6) on the above ground part of the column
(2);
- the teeth of a pinion (7) connect to the toothed rack (6);
- the pinion (7) is fixed on a driving shaft (8);
- two supports (9) connect to the driving shaft (8) through bearings;
- the supports (9) are fixed to the weight (1) and the pinion (7) is located between them;
- one end of the driving shaft (8) connects to the shaft of the electric motor (3) through the gearbox (5);
- the electric motor (3) is fixed to the weight (1);
- there is a casing (10) surrounding the components of the system;
- the casing (10) is protected against dust and water, and it is acoustically isolated;
- the control unit is in signal relation with the electromechanical brake (4) and the inverter, too.
2. The energy storing system according to Claim 1, characterized by a solar cell (11) above the casing (10), and the solar cell (11) being in electric connection with the electric motor (3).
3. The gravity energy storing system according to Claim 1 or 2 characterized in that the weight (1) is a cylindrical concrete block and the casing (10) is also cylindrical.
4. The gravity energy storing system according to Claim 1 or 2 characterized in that the weight (1) and the casing (10) is of the shape of a square prism.
PCT/HU2018/000060 2018-12-18 2018-12-20 Gravity energy storing system WO2020128539A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HUU1800223U HU5111U (en) 2018-12-18 2018-12-18 Gravity energy storage system
HUU1800223 2018-12-18

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WO2020128539A1 true WO2020128539A1 (en) 2020-06-25

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WO (1) WO2020128539A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113315158A (en) * 2021-06-08 2021-08-27 西安热工研究院有限公司 New energy power generation combined battery and gravity energy storage system and method
CN114665612A (en) * 2022-04-06 2022-06-24 山东大学 Gravity energy storage device based on permanent magnet linear motor and control method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007057323A1 (en) * 2007-11-29 2009-06-04 Jürgen Dipl.-Ing. Pesch Hub reservoir power station for power supply to e.g. household application, has hub mass moved vertically downwards for energy production such that generator is powered for production and energy recovery is carried out in electrical network
DE102014110303A1 (en) * 2013-07-27 2015-01-29 Hans Hagenmaier Device for storing position energy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007057323A1 (en) * 2007-11-29 2009-06-04 Jürgen Dipl.-Ing. Pesch Hub reservoir power station for power supply to e.g. household application, has hub mass moved vertically downwards for energy production such that generator is powered for production and energy recovery is carried out in electrical network
DE102014110303A1 (en) * 2013-07-27 2015-01-29 Hans Hagenmaier Device for storing position energy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113315158A (en) * 2021-06-08 2021-08-27 西安热工研究院有限公司 New energy power generation combined battery and gravity energy storage system and method
CN114665612A (en) * 2022-04-06 2022-06-24 山东大学 Gravity energy storage device based on permanent magnet linear motor and control method
CN114665612B (en) * 2022-04-06 2023-12-26 山东大学 Gravity energy storage device based on permanent magnet linear motor and control method

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Publication number Publication date
HU5111U (en) 2020-01-28

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