Power generation system using renewable energy

Abstract

The present invention relates to an energy storage device, which generates power using a drop, comprising: a movable rail disposed on terrain in which a downhill slope is formed from one side to the other; a power generation vehicle that moves in a first direction or a second direction and generates power; and a power line connected to the power generation vehicle, which transmits the generated power to the outside and receives power from the outside and supplies it to the power generation vehicle.

Description

Technology Field

[0001] The present invention relates to an energy storage device for storing power.

[0002] In addition, the present invention relates to a power generation system and method including an energy storage device. Background Technology

[0003] Power generation devices using renewable energy, such as solar and wind power, have the disadvantage of not being able to generate a constant amount of power.

[0004] Since solar power generation can only operate during the day and wind power generation can only operate when the wind blows, it is necessary to store electricity to overcome factors such as the day-night discrepancy and seasonal variations.

[0005] One method of storing electricity is the gravity energy storage system. This is a system that recovers energy by sending water or other heavy objects downward from above.

[0006] A representative example of a gravity energy storage system is pumped storage power generation, and systems that use surplus electricity to move water to pumped tanks are already being utilized in many countries.

[0007] However, pumped-storage power systems are currently used for auxiliary purposes due to significant limitations on installation locations and capacity.

[0008] To overcome this, there is a system that stores energy by stacking huge concrete blocks as shown in Figures 1 to 3, and then transports them back to the ground to recover the energy.

[0009] The energy storage system illustrated in Figures 1 to 3 has a problem with stability because a situation may occur where the entire tower collapses due to any one of the blocks.

[0010] In addition, among the currently widely used power storage methods, the most efficient and long-lasting is storing power in lithium-ion batteries.

[0011] However, lithium-ion batteries have the disadvantage of being expensive and experiencing performance degradation over time.

[0012] Also, while lithium-ion batteries are useful for short-term storage where power is stored and used within a few days, they are not economical for long-term storage, such as storing power in the summer and using it in the winter.

[0013] Therefore, an energy storage device is required that is economical and minimizes losses when storing electricity. The problem to be solved

[0014] The objective of the present invention is to provide an energy storage device capable of storing energy using a drop.

[0015] In addition, the objective of the present invention is to provide a power generation system and method capable of performing a stable power supply, including an energy storage device. means of solving the problem

[0016] An energy storage device according to one feature for realizing the purpose of the present invention described above is an energy storage device that generates power using a drop, comprising: a moving rail disposed on terrain in which a downhill slope is formed from one side to the other; a power generation vehicle that moves in a first direction or a second direction and generates power; and a power line connected to the power generation vehicle, which transmits the generated power to the outside and receives power from the outside and supplies it to the power generation vehicle.

[0017] The above-mentioned power generation vehicle comprises: a wheel that moves in the first direction or the second direction on the moving rail; a generator that generates power while moving in the first direction due to the drop; and a motor that generates power for movement in the second direction.

[0018] The first direction is the direction of movement from one side of the inclined surface to the other side, and the second direction is the direction of movement from the other side of the inclined surface to the one side.

[0019] Here, the generator generates power through the rotation of a first gear, the moving rail includes a second gear coupled to the rotation shaft of the motor, and the motor includes a third gear on one side of the rotation shaft that meshes with the second gear.

[0020] And, the first gear is connected to the rotating shaft of the motor through a connecting chain.

[0021] Additionally, the power generation vehicle further comprises: a plurality of power generation units that move in the first direction and generate power by the rotation of the first gear and move in the second direction by the motor; and a plurality of weight units coupled to the power generation units, which move in the first direction and the second direction by the plurality of power generation units and are provided with a weight heavier than that of the power generation units to provide acceleration to the plurality of power generation units when the plurality of power generation units move in the first direction.

[0022] Additionally, the power line comprises: a cable through which the power travels; and a plurality of connecting parts connected to the cable and coupled to the plurality of power generation units to transmit power to the plurality of power generation units or to transmit power generated from the plurality of power generation units to the cable.

[0023] Here, the plurality of connections move along the cable.

[0024] In addition, a power generation system according to one feature for realizing the purpose of the present invention described above comprises: a power generation system that generates power using renewable energy, including an energy storage device, and comprises a plurality of power generation devices that generate wind power or solar power; an energy storage device disposed on terrain where a downward slope is formed from one side to the other and moves along the slope to perform a storage operation or a power generation operation; and a control device that controls the storage operation and the power generation operation according to the amount of power generated by the plurality of power generation devices.

[0025] The energy storage device comprises a power generation vehicle moving along the inclined surface, wherein the power generation operation is the operation of the power generation vehicle moving from one side of the inclined surface to the other side, and the storage operation is the operation of the power generation vehicle moving from the other side of the inclined surface to the one side.

[0026] Here, the control device includes: a power generation measuring unit for measuring the power generation amount of the plurality of power generation devices; a status measuring unit for determining the current location of the power generation vehicle; and a control unit for controlling the storage operation or the power generation operation of the energy storage device according to the power generation amount of the plurality of power generation devices.

[0027] In addition, the control unit moves the power generation vehicle from one side of the inclined surface to the other side so that the energy storage device performs the power generation operation when the power generation amount of the plurality of power generation devices is less than the reference amount.

[0028] Here, the power generation vehicle moves from one side of the inclined surface to the other side by means of a drop.

[0029] In addition, the control unit moves the power generation vehicle from the other side of the inclined surface to the one side so that the energy storage device performs the storage operation when the power generation amount of the plurality of power generation devices is greater than the reference amount.

[0030] Here, the power generation vehicle moves from the other side of the inclined surface to the one side by means of a motor.

[0031] In addition, a power generation method according to one feature for realizing the objective of the present invention described above is a power generation method of a power generation system that generates power using renewable energy and includes an energy storage device, comprising the steps of: measuring the amount of power generated by a plurality of power generation devices; comparing the amount of power generated with a reference amount; and controlling the operation of the energy storage device according to the comparison result.

[0032] The step of controlling the operation of the energy storage device comprises: a step of determining the location of the power generation vehicle of the energy storage device when the power generation amount is less than the reference amount; and a step of the energy storage device performing a power generation operation according to the location of the power generation vehicle.

[0033] Here, the step of performing the power generation operation involves, in the step of determining the position of the power generation vehicle, moving the power generation vehicle to the other side if the power generation vehicle is positioned on the one side of an inclined surface where a downhill slope is formed from one side to the other side.

[0034] Additionally, the step of controlling the operation of the energy storage device includes: a step of determining the location of the power generation vehicle of the energy storage device when the power generation amount is greater than the reference amount; and a step of the energy storage device performing a storage operation according to the location of the power generation vehicle.

[0035] Here, the step of performing the storage operation involves, in the step of determining the location of the power generation vehicle, moving the power generation vehicle to the one side of the inclined surface if the power generation vehicle is positioned on the other side of the inclined surface. Effects of the invention

[0036] According to an energy storage device and a power generation system and method including the same according to an embodiment of the present invention,

[0037] First, power storage and generation are facilitated because electricity can be stored or generated through the movement of the generator vehicle.

[0038] Second, the stability of power generation can be enhanced by controlling the operation of the energy storage device according to the power generation amount of multiple power generation devices. Brief explanation of the drawing

[0039] FIGS. 1 to 3 are exemplary diagrams showing a conventional energy storage device. FIG. 4 is a schematic conceptual diagram of an energy storage device according to an embodiment of the present invention. Fig. 5 is a perspective view of the power generation vehicle shown in Fig. 4. Figure 6 is a rear cross-sectional view of the power generation unit shown in Figure 5. Figure 7 is a side cross-sectional view of the power generation unit shown in Figure 5. FIG. 8 is a perspective view showing the combined structure of the second gear and the third gear. FIG. 9 is a perspective view showing the combined structure of the first gear and the motor. FIG. 10 is a conceptual diagram schematically illustrating a power generation system according to an embodiment of the present invention. FIG. 11 is a flowchart illustrating a power generation method according to an embodiment of the present invention. FIG. 12 is a flowchart for explaining the process of controlling the operation of the energy storage device illustrated in FIG. 11. FIG. 13 is a flowchart for explaining the process of controlling the operation of the energy storage device illustrated in FIG. 11. Specific details for implementing the invention

[0040] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. Note that in the attached drawings, identical components are indicated by the same reference numerals whenever possible. Furthermore, detailed descriptions of known functions and configurations that may obscure the essence of the present invention will be omitted. For the same reason, some components in the attached drawings have been exaggerated, omitted, or schematically depicted.

[0041] FIG. 4 is a schematic conceptual diagram of an energy storage device according to an embodiment of the present invention, FIG. 5 is a perspective view of a power generation vehicle shown in FIG. 4, and FIG. 6 is a rear cross-sectional view of a power generation unit shown in FIG. 5.

[0042] FIG. 7 is a side cross-sectional view of the power generation unit shown in FIG. 5, FIG. 8 is a perspective view showing the combined structure of the second gear and the third gear, and FIG. 9 is a perspective view showing the combined structure of the first gear and the motor.

[0043] The energy storage device (100) of the present invention will be described with reference to FIGS. 4 to 9.

[0044] The energy storage device (100) of the present invention is a device that generates power using a drop and includes a moving rail (110), a power generation vehicle (120), and a power line (130).

[0045] The moving rail (110) is positioned on terrain where a downward slope is formed from one side to the other, and the power generation vehicle (120) generates power when moving in the first direction or the second direction.

[0046] Here, the first direction is the direction of movement from one side of the slope to the other, and the second direction is the direction of movement from the other side of the slope to one side.

[0047] For example, if one side is a point to the right of the power generation vehicle (120) in FIG. 4 and is at a higher altitude than the other side, the first direction may be the direction in which the power generation vehicle (120) goes down along the slope, and the second direction may be the direction in which the power generation vehicle (120) goes up along the slope.

[0048] And, the power generation vehicle (120) includes a wheel (121), a generator (122) and a motor (123), and is composed of a plurality of power generation parts (124) and a plurality of weight parts (125).

[0049] The wheel (121) moves in a first direction or a second direction on the moving rail (110), the generator (122) generates power while moving in the first direction by the fall, and the motor (123) generates power for movement in the second direction.

[0050] The generator (122) generates power through the rotation of the first gear (122a), and the moving rail (110) includes a second gear (111) that is coupled to the rotation axis (123a) of the motor (123), and the motor (123) includes a third gear (123b) that meshes with the second gear (111) on one side of the rotation axis (123a).

[0051] Here, the first gear (122a) is connected to the rotation shaft (123a) of the motor (123) via a connecting chain (126), and the motor (123) includes a pulley (123c) connected to the rotation shaft (123a) via the connecting chain (126).

[0052] And, a plurality of power generation units (124) move in a first direction and generate power by the rotation of the first gear (122a), and move in a second direction by the motor (123).

[0053] A plurality of weight portions (125) are combined with a power generation portion (124) and move in a first direction and a second direction by the plurality of power generation portions (124), and are provided with a weight heavier than that of the power generation portion (124) to provide acceleration to the plurality of power generation portions (124) when the plurality of power generation portions (124) move in the first direction.

[0054] And, the weight portion (125) has a space (10) formed therein that can hold an object having weight, and as shown in FIG. 5, the weight can be adjusted by placing an object in the space (10).

[0055] The power line (130) is connected to the power generation vehicle (120), transmits the generated power to the outside, and receives power from the outside and supplies it to the power generation vehicle (120).

[0056] The power line (130) includes a cable (131) and a plurality of connecting parts (132).

[0057] The cable (131) is placed on the upper part of the moving rail (110), and power is transferred.

[0058] A plurality of connecting parts (132) are connected to a cable (131) and combined with a plurality of power generation parts (124) to transmit power to the plurality of power generation parts (124) or to transmit power generated from the plurality of power generation parts (124) to the cable (131).

[0059] Multiple connecting parts (132) move together along the cable (131) as the multiple power generation parts (124) move.

[0060] FIG. 10 is a conceptual diagram schematically illustrating a power generation system according to an embodiment of the present invention.

[0061] The power generation system (1000) of the present invention includes an energy storage device (100) shown in FIG. 4 and is a power generation system that generates power by performing power generation using renewable energy.

[0062] Referring to FIG. 4 and FIG. 10, the power generation system (1000) of the present embodiment includes an energy storage device (100), a plurality of power generation devices (200), and a control device (300).

[0063] An energy storage device (100) is placed on terrain where a downward slope is formed from one side to the other, and moves along the slope to perform a storage operation or a power generation operation.

[0064] The energy storage device (100) includes a power generation vehicle moving on an inclined surface, the power generation operation is the operation of the power generation vehicle moving from one side of the inclined surface to the other side, and the storage operation is the operation of the power generation vehicle moving from the other side of the inclined surface to one side.

[0065] A plurality of power generation devices (200) generate wind power or solar power, and a control device (300) controls the storage operation and power generation operation of an energy storage device (100) according to the amount of power generated by the plurality of power generation devices (200).

[0066] The control device (300) includes a power generation measuring unit (310), a state measuring unit (320), and a control unit (330).

[0067] The power generation measurement unit (310) measures the power generation amount of a plurality of power generation devices (200), the status measurement unit (320) identifies the current location of the power generation vehicle, and the control unit (330) controls the storage operation or power generation operation of the energy storage device (100) according to the power generation amount of the plurality of power generation devices (200).

[0068] When explaining the process of the control unit (330) controlling the power generation operation of the energy storage device (100), the control unit (330) moves the power generation vehicle (120) from one side of the slope to the other side so that the energy storage device (100) performs the power generation operation when the power generation amount of the plurality of power generation devices (200) is less than the reference amount.

[0069] During the process of performing the power generation operation, the power generation vehicle (120) moves from one side of the slope to the other due to the drop.

[0070] Here, the power generation vehicle (120) generates power as it goes down the slope due to the drop.

[0071] Additionally, to explain the process of the control unit (330) controlling the storage operation of the energy storage device (100), the control unit (330) moves the power generation vehicle (120) from one side of the slope to the other side so that the energy storage device (100) performs a storage operation when the power generation amount of the plurality of power generation devices (200) is greater than the reference amount.

[0072] During the process of performing the storage operation, the generator vehicle (120) moves from one side of the slope to the other side by means of the motor (123).

[0073] Here, the power generation vehicle (120) moves up along the slope using the moving power from the motor (123).

[0074] FIG. 11 is a flowchart illustrating a power generation method according to one embodiment of the present invention.

[0075] The present invention is a method for generating power of a power generation system (1000) illustrated in FIG. 10. The method for generating power according to the present invention will be explained with reference to FIG. 10 and FIG. 11.

[0076] The power generation measuring unit (310) of the control device (300) measures the power generation of a plurality of power generation devices (200) (step S110).

[0077] Afterwards, the control unit (330) of the control device (300) compares the power generation amount of the multiple power generation devices (200) with the reference amount (step S120).

[0078] Then, the control unit (330) controls the operation of the energy storage device (100) according to the comparison result of step S120 (steps S130, S140).

[0080] Here, the process of controlling the operation of the energy storage device (100) is divided into a process of controlling the power generation operation (step S130) and a process of controlling the storage operation (step S140).

[0081] FIG. 12 is a flowchart for explaining the process of controlling the power generation operation of the energy storage device illustrated in FIG. 11.

[0082] With reference to FIGS. 4, FIGS. 10 and FIGS. 12, the process (step S130) of controlling the power generation operation of the energy storage device illustrated in FIG. 11 will be described.

[0083] In step S120, if the amount of power generated is less than the reference amount, the state measuring unit (320) of the control device (300) identifies the location of the power generation vehicle of the energy storage device (100) (step S131).

[0084] Then, depending on the location of the power generation vehicle, the energy storage device (100) performs a power generation operation (step S132).

[0085] If the power generation vehicle (120) is positioned on one side of the slope in step S131, the control unit (330) moves the power generation vehicle to the other side of the slope in step S132.

[0086] FIG. 13 is a flowchart for explaining the process of controlling the storage operation of the energy storage device illustrated in FIG. 11.

[0087] With reference to FIGS. 4, FIGS. 10 and FIGS. 12, the process (step S140) of controlling the power generation operation of the energy storage device illustrated in FIG. 11 will be described.

[0088] In step S120, if the amount of power generated is greater than the reference amount, the state measuring unit (320) of the control device (300) identifies the location of the power generation vehicle of the energy storage device (100) (step S141).

[0089] Then, depending on the location of the power generation vehicle (120), the energy storage device (100) performs a storage operation (step S142).

[0090] If the power generation vehicle (120) is positioned on the other side of the slope in step S141, the control unit (330) moves the power generation vehicle (120) to one side of the slope in step S142.

[0091] Although the invention has been described with reference to the above embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0092] *100...Energy storage device 110...Moving rail 111...2nd gear 120...generator vehicle 121...wheel 122...generator 122a...1st gear 123...motor 123a...Rotation axis 123b...Third gear 124...Power Generation Division 125...Weight Division 126...connection chain 130...power line 131...Cable 132...Connector 200...generator 300..control device 310...Power generation measurement unit 320...Status measurement unit 330...Control unit

Claims

Claim 1 A power generation system comprising an energy storage device and generating power using renewable energy, comprising: a plurality of power generation devices for wind power generation or solar power generation; an energy storage device disposed on terrain where a downward slope is formed from one side to the other and moves along the slope to perform a storage operation or a power generation operation; and a control device that controls the storage operation and the power generation operation according to the amount of power generated by the plurality of power generation devices, wherein the energy storage device comprises a power generation vehicle that moves along the slope, and the power generation vehicle comprises: a wheel that moves in a first direction or a second direction on a moving rail; a generator that generates power while moving in the first direction due to a drop; a motor connected to the wheel to generate power for movement in the second direction and installed separately from the generator and spaced apart from the generator and installed below the generator; a first gear connected to the generator to generate power for the generator by rotation; and a second gear formed on the moving rail. and includes a third gear that meshes with the second gear on the second gear and is connected to the first gear through a connecting chain, having a diameter larger than the diameter of the first gear; the power generation vehicle further includes a plurality of power generation units that move in the first direction and generate power by the rotation of the first gear and move in the second direction by the motor; and a plurality of weight units that are separately provided and coupled to the plurality of power generation units, move in the first direction and the second direction by the plurality of power generation units, and are provided with a weight heavier than the plurality of power generation units to provide acceleration to the plurality of power generation units when the plurality of power generation units move in the first direction; the power generation operation is an operation in which the power generation vehicle moves from one side of the inclined surface to the other side; the storage operation is an operation in which the power generation vehicle moves from the other side of the inclined surface to the one side; and the control device includes a power generation amount measuring unit that measures the power generation amount of the plurality of power generation units; and a state measuring unit that determines the current position of the power generation vehicle.A power generation system comprising a control unit that controls the storage operation or the power generation operation of the energy storage device according to the power generation amount of the plurality of power generation devices, wherein the control unit moves the power generation vehicle from one side of the inclined surface to the other side so that the energy storage device performs the power generation operation when the power generation amount of the plurality of power generation devices is less than a reference amount, and moves the power generation vehicle from the other side of the inclined surface to the one side so that the energy storage device performs the storage operation when the power generation amount of the plurality of power generation devices is more than a reference amount. Claim 2 In paragraph 1, the power generation vehicle is a power generation system that moves from one side of the inclined surface to the other side by means of a drop.

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