KR102673838B1 - Renewable energy storage device - Google Patents

Abstract

The purpose of the present invention is to provide a plate-shaped coil storage device that can store even micro-power generated from a wind power generator or solar power generator, and can store it through a separate storage device even when Korea Electric Power Corporation restricts output. The energy storage device using a plate-shaped coil comprises: a renewable energy power generation device (10); a motor (20) driven by the renewable energy power generation device (10); a plate-shaped coil storage device (40) configured to wind a plate-shaped coil (45) according to the rotation of a rotation shaft (410); a second driving gear (26) that rotates simultaneously with the rotation of the rotation shaft (410); a first clutch (310) that transmits or interrupts the rotation of the rotation shaft (410); a second clutch (320) that transmits or interrupts the rotation of the rotation shaft (410); and a power storage device (50) that stores electricity by the rotation of the rotation shaft (51).

Description

Energy storage device using plate coil {RENEWABLE ENERGY STORAGE DEVICE}

The present invention relates to an energy storage device using a plate-shaped coil. More specifically, the present invention relates to a plate-shaped coil that is made by winding a plate in a coil shape to store power and even micro-generated power generated from wind power generation or solar power generation devices. This relates to an energy storage device using a coil.

In general, electricity produced by solar power generation facilities or wind power generation is sent to the Korea Electric Power Corporation. As the spread of renewable energy increases, the instability of power system operation increases, and the Korea Electric Power Corporation increases the frequency of output control for renewable energy. there is.

According to the Korea Electric Power Corporation and the Korea Power Exchange, the number of solar power generators has increased rapidly to the extent that the power supplied from solar power generation facilities alone can cover daily electricity use in the spring and fall when power consumption is low, and in Jeju Island, public power generation for the first time in 2021 has increased. Output control of solar power generation facilities was carried out once, and 20 MW was blocked in March 2022.

In particular, when power usage is relatively low, such as in the spring and fall, power output from renewable energy is supplied excessively, leading to a situation where blackouts occur.

Accordingly, the Korea Power Exchange and KEPCO plan to cut off power to all power plants that can be remotely shut off among renewable energy sources connected to common distribution lines when excessive power is supplied, and output control is carried out sequentially from 1st to 6th priority.

First of all, the Korea Power Exchange takes measures to minimize the output of large-scale generators. Despite these measures, when power supply and demand imbalance persists, power is transmitted back to HVDC line 1 (second priority). Next, in unavoidable cases, wind power generation output control (3rd priority) is implemented, followed by waste power generation output control (4th priority), and transformer tap adjustment (5th priority). In the 6th priority, the output of all renewable energy connected to the public power grid is blocked. According to data presented by KEPCO, 210 solar power plants will be divided into 30 groups and power will be cut off.

Each group includes 6 to 7 operators, and the total facility capacity is approximately 5 MW. If 5 MW output control is required, the power generation capacity of 6 to 7 business sites corresponding to one group will be blocked. In this way, when the power output from renewable energy is supplied excessively, the output is controlled. In particular, in the case of a certain amount of micro-generated power, it is not supplied by the Korea Electric Power Corporation, so there is a problem that oversupply or micro-generated power is wasted.

The technology behind the present invention includes Patent Registration No. 2036833, “Solar power generation system with energy storage device” (Patent Document 1).

In the above background technology, a solar power generation module 111 that produces direct current power from solar power, an inverter unit 115 that converts the direct current power produced by the solar power module into alternating current power, and a KEPCO system power supply A solar power generation device (110) connected to (11); A battery unit 131, which converts the alternating current power supplied from the solar power generation device into direct current power in the charging mode and supplies it to the battery unit, and converts the direct current power discharged from the battery unit into alternating current power and outputs it in the discharging mode. Energy storage device 130 including a PCS unit 135; and an energy management device 160 that controls the operation of the solar power generation device and the energy storage device, wherein the energy management device includes the real-time generated power amount measured by the inverter unit and the real-time charging power amount measured by the PCS unit. By comparing, we propose a 'solar power generation system including an energy storage device, which operates the PCS unit only when the amount of generated power is greater than the amount of charging power.'

However, the above background technology also had a problem in that a certain amount of micro-generated power was not supplied by the Korea Electric Power Corporation, resulting in oversupply or waste in the case of micro-generated power.

Patent Registration No. 2036833 “Solar power generation system with energy storage device”

The present invention is intended to solve the problems described above, and allows the power generated from wind power generation or solar power generation devices to be stored even in minute amounts, so that it can be stored through a separate storage device even when output is limited by KEPCO. The purpose is to provide a plate-type coil storage device.

The present invention includes a renewable energy power generation device; A motor operated by a renewable energy power generation device and comprising a first driving gear; It consists of a rotating shaft and a plate-shaped coil in which a plate material is wound in a coil shape so that one end is fixed to the case and the other end is fixed to the rotating shaft inside a case of circular cross-section that is hollow inside and located in the center of the rotating shaft. A plate-shaped coil storage device configured to wind a coil; a first driven gear formed at the upper end of the rotating shaft and rotating in engagement with the first driving gear; a second driving gear formed at the lower end of the rotating shaft and rotating simultaneously with the rotation of the rotating shaft; a first clutch configured between the first driven gear of the rotating shaft and the case to transmit or stop rotation of the rotating shaft; a second clutch configured between the case of the rotating shaft and the second driving gear to transmit or stop rotation of the rotating shaft; And a power storage device that includes a second driven gear that rotates in engagement with the second drive gear and a rotation shaft that is configured in the center of the second driven gear and rotates with the rotation of the second driven gear to store energy through rotation of the rotation shaft. The object is to provide an energy storage device using a plate-shaped coil, which includes:

In addition, it is intended to provide an energy storage device using a plate-shaped coil, wherein a first clutch is configured between the first driven gear of the rotating shaft and the case to transmit or stop rotation of the rotating shaft.

In addition, it is intended to provide an energy storage device using a plate-shaped coil, wherein a second clutch is configured between the case of the rotating shaft and the second driving gear to transmit or stop the rotation of the rotating shaft.

In addition, a plurality of plate-type coil storage devices are configured in parallel, and a chain gear is formed on the rotation axis of each plate-type coil storage device, and the chain gears of adjacent plate-type coil storage devices are connected with chains, respectively, and the rotation axis of the plate-type coil storage device is connected to the motor. The object of the present invention is to provide an energy storage device using a plate-shaped coil, wherein the rotation axis of a plurality of plate-shaped coil storage devices configured in parallel rotates simultaneously.

In addition, it is intended to provide an energy storage device using a plate-shaped coil, which is characterized in that a ratchet gear is configured on the rotation axis of the plate-shaped coil storage device and a pawl is configured to engage with the ratchet gear to enable rotation in only one direction.

In addition, it is intended to provide an energy storage device using a plate-shaped coil, wherein the renewable energy power generation device is at least one of a solar power generation device and a wind power generation device.

The energy storage device using a plate-shaped coil of the present invention uses a plate-shaped coil made of a plate wound into a coil to store power generated from wind power generation or solar power generation equipment, so that even when Korea Electric Power Corporation restricts output, a separate storage device is used. Not only can it be stored through a storage device, but even micro-generated power can be stored, which is very useful.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention along with the detailed description of the invention. Therefore, the present invention is limited to the matters described in the attached drawings. It should not be interpreted as limited.
Figure 1 is a configuration diagram showing the schematic configuration of an energy storage device using a plate-shaped coil of the present invention.
Figure 2 is a partial enlarged plan view of an energy storage device using a plate-shaped coil of the present invention.

Below, the present invention will be described in detail with reference to embodiments shown in the attached drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

Hereinafter, the technical configuration of the present invention will be described in detail according to preferred embodiments.

Figure 1 is a schematic diagram showing the schematic configuration of an energy storage device using a plate-shaped coil of the present invention, and Figure 2 is an enlarged plan view of a portion of an energy storage device using a plate-shaped coil of the present invention.

As shown in Figure 1, the energy storage device using the plate-shaped coil of the present invention includes a renewable energy power generation device 10, a motor 20 operated by the renewable energy power generation device 10, and a motor 20 wound by the motor 20. It consists of a plate-shaped coil storage device 40 and a power storage device 50 that stores electricity generated by rotation of a plate-shaped coil 45 wound by the plate-shaped coil storage device 40.

The renewable energy power generation device 10 can use all of the various known renewable energy power generation devices, and the renewable energy power generation device 10 can be used as either a solar power generation device 11 or a wind power generation device 12 or by connecting both. You can.

The motor 20 is operated by the renewable energy power generation device 10, and as the motor 20 operates, the first drive gear 21 formed on the shaft of the motor 20 rotates simultaneously.

A plate-shaped coil storage device 40 is connected to this motor 20, so that the rotation of the motor 20 causes the plate-shaped coil 45 to be wound inside the plate-shaped coil storage device 40. For this purpose, a plate-shaped coil 45 is wound. The coil storage device 40 is located on a rotating shaft 410 and in the center of the rotating shaft 410, and is located inside a case 41 of a circular cross-section with an empty interior. One end is fixed to the case 41 and the other end is fixed to the rotating shaft ( A plate-shaped coil 45 in which a plate material such as a steel plate is wound is configured to be fixed to 410).

This plate-shaped coil 45 is composed of an elastic plate such as a steel plate wound into a coil shape, and both ends of each are fixed to the rotating shaft 410 and the case 41, so that according to the rotation of the rotating shaft 410, the plate-shaped coil ( 45) As it is wound, energy is accumulated.

At this time, the case 41 may be fixed to a separate structure so that it does not rotate simultaneously.

Therefore, the motor 20 rotates by the renewable energy power generation device 10, and energy is accumulated in the plate-shaped coil storage device 40 by the motor 20. In this plate-shaped coil storage device 40, the plate-shaped coil The energy stored by winding (45) is stored in the power storage device (50) as the plate-shaped coil (45) is unwound.

Although the shaft control device 50 is not expressed in detail, it may include a power generation device that generates electricity by rotation of the rotation shaft 51 and a storage battery that stores the power generated by the power generation device.

In this way, the plate-shaped coil storage device 40 rotates the rotation shaft 410 due to the driving of the motor 20. To this end, the upper part of the rotation shaft 410 is equipped with a first gear that rotates in engagement with the first drive gear 21. A driven gear 22 is configured.

In addition, in order to be connected to the power storage device 50, a second driving gear 26 is formed at the lower end of the rotating shaft 410 to rotate simultaneously with the rotation of the rotating shaft 410, and the power storage device 50 is provided with a second driving gear 26. It includes a second driven gear 52 that rotates in engagement with the gear 26 and a rotation shaft 51 configured in the center of the second driven gear 52 and rotating with the rotation of the second driven gear 52. 51) to store energy through rotation.

In particular, in the present invention, the plate-shaped coil 45 is wound while the rotation shaft 410 is rotated by the motor 20. At this time, the second driven gear 52 of the power storage device 50 is simultaneously connected to the rotation shaft 410. ) A second clutch 320 is configured between the case 41 of the rotating shaft 410 and the second driving gear 26 so that only the plate-shaped coil 45 is wound without rotating at the same time to rotate the rotating shaft 410. Pass it on or hang up.

In addition, a first clutch 310 is configured between the first driven gear 22 of the rotating shaft 410 and the case 41 to transmit or cut off the rotation of the rotating shaft 410, thereby forming a fully wound plate-shaped coil ( 45) is released to prevent the first driven gear (22) from rotating in reverse.

When storing elastic energy in the plate-shaped coil 45, the first clutch 310 is connected so that the plate-shaped coil 45 rotates when the rotation shaft 410 rotates, and the second clutch 320 is connected to the second drive gear 26. Avoid rotating.

The first clutch 310 and the second clutch 320 may be operated by a lever or electronically.

There may be only one plate-shaped coil storage device 40, or a plurality of them may be configured in parallel as needed, and a chain gear 440 is configured on the rotation axis 410 of each plate-shaped coil storage device 40 and adjacent plate-shaped coils. When the rotation shaft 410 of the plate coil storage device 40 connected to the motor 20 rotates by connecting the chain gear 440 of the storage device 40 with a chain 450, a plurality of plate coil storage devices configured in parallel By allowing the rotation shaft 410 of (40) to rotate simultaneously, a plurality of plate-shaped coils 45 can be wound at the same time.

In addition, as shown in FIG. 2, a ratchet gear 460 is configured on the rotation axis 410 of the plate-shaped coil storage device 40, and a pawl 470 is configured to engage with the ratchet gear 460 to enable only one-directional rotation. As much as possible, the plate-shaped coil 45 is wound, and when it is desired to unwind the plate-shaped coil 45, the pawl 470 can be released to allow the plate-shaped coil 45 to be unwound.

At this time, the rotation shaft 471 formed on one side of the pole 470 and the pole 47 is not fixed to a rotating structure such as the rotation shaft 410 or the chain gear 440 and is not shown, but is an external non-rotating structure ( For example, it may be configured in the lid of the case 41, etc.).

In general, the renewable energy power generation device 10 is sent through an inverter when sent to a home or place of use. The inverter is a device that converts electricity generated by renewable energy such as solar energy into electricity that we can use. If it does not turn on, the solar inverter automatically turns off and the micro-generation power is not stored through the inverter, so the micro-generation power is wasted.

However, in the present invention, since even micro-generated power is used to wind the plate-shaped coil 45, waste of power can be eliminated.

Energy is stored in the power storage device 50 by the second driven gear 52 that rotates in engagement with the second driving gear 26. At this time, the second driving gear 26 and the second driven gear 52 are By varying the gear ratio, the second driven gear 52 can rotate at high speed.

The energy storage device using the plate-shaped coil of the present invention as described above uses a plate-shaped coil in which a plate is wound into a coil to store power generated from a wind power generation or solar power generation device, in case the output is limited by Korea Electric Power Corporation. Not only can it be stored through a separate storage device, but even micro-generated power can be stored, which is very useful.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various variations and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such variations and modifications, but is limited by the claims appended below.

10: Renewable energy power generation device
20: motor
22: 1st driven gear
26: second driving gear
310: first clutch
320: second clutch
40: Flat coil storage device
41: case
45: plate coil
410: rotation axis
50: power storage device

Claims (4)

A renewable energy power generation device (10);
A motor 20 that is operated by a renewable energy power generation device 10 and includes a first driving gear 21;
Inside the rotating shaft 410 and the case 41 of a circular cross-section, which is located in the center of the rotating shaft 410 and has an empty interior, a plate is installed so that one end is fixed to the case 41 and the other end is fixed to the rotating shaft 410. A plate-shaped coil storage device (40) composed of a plate-shaped coil (45) wound in a coil shape so that the plate-shaped coil (45) is wound as the rotation shaft (410) rotates;
A first driven gear 22 configured at the upper end of the rotating shaft 410 and rotating in engagement with the first driving gear 21;
a second driving gear 26 formed at the lower end of the rotating shaft 410 and rotating simultaneously with the rotation of the rotating shaft 410;
A first clutch 310 configured between the first driven gear 22 of the rotating shaft 410 and the case 41 to transmit or stop the rotation of the rotating shaft 410;
A second clutch 320 configured between the case 41 of the rotating shaft 410 and the second driving gear 26 to transmit or cut off the rotation of the rotating shaft 410; and
It includes a second driven gear 52 that rotates in engagement with the second drive gear 26 and a rotation shaft 51 formed in the center of the second driven gear 52 and rotating with the rotation of the second driven gear 52. It consists of a power storage device (50) that stores electricity through the rotation of the rotating shaft (51),
A plurality of plate-shaped coil storage devices 40 are configured in parallel, and a chain gear 440 is configured on the rotation axis 410 of each plate-shaped coil storage device 40, and a chain gear 440 of the adjacent plate-shaped coil storage device 40 is provided. ) are each connected to a chain 450 so that when the rotation axis 410 of the plate-shaped coil storage device 40 connected to the motor 20 rotates, the rotation axis 410 of a plurality of plate-shaped coil storage devices 40 configured in parallel rotates at the same time. Let it rotate,
A ratchet gear 460 is configured on the rotation axis 410 of the plate coil storage device 40, and a pawl 470 is configured to engage with the ratchet gear 460 to enable rotation in only one direction. Energy storage device used. delete delete In claim 1,
The renewable energy power generation device (10) is an energy storage device using a plate-shaped coil, characterized in that it is one or more of a solar power generation device (11) and a wind power generation device (12).

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