Mechanical energy storage device and system

Abstract

The mechanical energy storage device comprises a plurality of mechanical energy storage mechanisms, each mechanical energy storage mechanism comprises an installation mechanism and a plurality of mechanical energy storage units, and each mechanical energy storage unit comprises a fixed shaft assembly, a rotating shaft assembly, a volute spiral spring and a reversible motor. In this way, the bidirectional performance of the reversible motor is utilized, and based on the electromagnetic induction law and the Faraday electromagnetic induction law, when the driving end of the reversible motor rotates forwards, the volute spiral spring is tensioned to store mechanical potential energy; when the driving end of the reversible motor rotates reversely, the volute spiral spring is released to convert mechanical potential energy into electric energy for power supply, efficient integration of scattered electric energy and peak load translation of metallurgical enterprises are achieved through cooperative control of the reversible motor and the volute spiral spring, the electric energy can be stored in the storage battery, electricity is supplemented during the peak period of electricity utilization, and the energy saving effect is achieved. The production cost is reduced, the structure is simple, and later maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of energy storage power generation technology, and in particular to a mechanical energy storage device and system. Background Technology

[0002] In the metallurgical industry, the surge in load during peak electricity consumption periods can easily cause power grid fluctuations or even power outages, severely disrupting production continuity and leading to significant losses such as furnace solidification and rolling mill shutdowns.

[0003] To alleviate peak loads, existing technologies often utilize distributed wind and solar power systems within the plant area to convert waste energy into electricity. However, this type of distributed generation has significant drawbacks:

[0004] Output instability: Fluctuations in wind and solar resources lead to random fluctuations in power generation, making it difficult to match the instantaneous demand for peak electricity consumption; Energy fragmentation: The spatiotemporal dispersion of multi-source power generation results in fragmented power output, making it impossible to centrally store and form effective discharge capacity, etc.

[0005] Therefore, there is an urgent need for an energy storage system that can efficiently integrate scattered electrical energy and achieve controlled charging and discharging to support load shifting during peak periods. Utility Model Content

[0006] The main objective of this invention is to provide a mechanical energy storage device and system to solve the problems of decentralized and unstable energy storage in the prior art.

[0007] To achieve the above objectives, this utility model provides a mechanical energy storage device, comprising multiple spaced-apart mechanical energy storage mechanisms, each of which includes a mounting mechanism and multiple mechanical energy storage units spaced circumferentially along the mounting mechanism; wherein,

[0008] Each of the mechanical energy storage units includes a fixed-axis assembly, a rotating shaft assembly, a spiral spring, and a reversible motor. The fixed-axis assembly is connected to the top of the mounting mechanism, the rotating shaft assembly is connected to the bottom of the mounting mechanism, one end of the spiral spring is connected to the fixed axis of the fixed-axis assembly, the other end of the spiral spring is connected to the rotating shaft of the rotating shaft assembly, and the drive end of the reversible motor is connected to the rotating shaft of the rotating shaft assembly.

[0009] Specifically, when the drive end of the reversible motor rotates forward, the spiral spring is tightened to store mechanical potential energy; when the drive end of the reversible motor rotates in reverse, the spiral spring is released to convert the mechanical potential energy into electrical energy for power supply.

[0010] Preferably, the installation mechanism includes a top plate, a chassis, and a plurality of columns spaced circumferentially along the top plate, the columns being supported between the top plate and the chassis.

[0011] Preferably, the fixed-axis assembly includes a fixed-axis housing and a fixed-axis, the fixed-axis housing is connected to the top plate, and an opening is provided on one side of the fixed-axis housing. The fixed-axis is fixed in the fixed-axis housing, and one end of the spiral spring extends into the opening end of the fixed-axis housing and is connected to the fixed-axis.

[0012] Preferably, the rotating shaft assembly includes a rotating shaft housing and a rotating shaft. The rotating shaft housing is connected to the chassis, and an opening is provided on one side of the rotating shaft housing. The rotating shaft is fixed in the rotating shaft housing, and the other end of the spiral spring extends into the opening end of the rotating shaft housing and is connected to the rotating shaft.

[0013] Preferably, both the top plate and the chassis are ring-shaped, and the opening end of the fixed shaft housing is located close to and facing the inner ring side of the top plate, while the opening end of the rotating shaft housing is located close to and facing the inner ring side of the chassis.

[0014] Preferably, the top plate has a plurality of top grooves spaced apart along its circumference, and the side wall of the top plate has a plurality of first bolt holes spaced apart along its circumference. Each top groove is connected to a first bolt hole, and each top groove is provided with a fixed shaft housing. Bolts pass through the first bolt holes and extend into the top groove to press the fixed shaft housing.

[0015] Preferably, the chassis has a plurality of bottom grooves spaced apart along its circumference, and the side wall of the chassis has a plurality of second bolt holes spaced apart along its circumference. Each bottom groove is connected to a second bolt hole, and each bottom groove is provided with a shaft housing. Bolts pass through the second bolt holes and extend into the bottom groove to press the shaft housing.

[0016] Preferably, each mechanical energy storage mechanism contains twelve mechanical energy storage units, which are arranged at intervals along the circumference of the installation mechanism.

[0017] Preferably, the plurality of mechanical energy storage mechanisms are arranged in a matrix.

[0018] This application also provides a mechanical energy storage system, including a plurality of mechanical energy storage devices as described above, wherein the plurality of mechanical energy storage devices are sequentially spliced ​​together.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a mechanical energy storage device and system, comprising multiple spaced mechanical energy storage mechanisms. Each mechanical energy storage mechanism includes an installation mechanism and multiple mechanical energy storage units spaced circumferentially along the installation mechanism. Each mechanical energy storage unit includes a fixed shaft assembly, a rotating shaft assembly, a spiral spring, and a reversible motor. The fixed shaft assembly is connected to the top of the installation mechanism, the rotating shaft assembly is connected to the bottom of the installation mechanism, one end of the spiral spring is connected to the fixed shaft of the fixed shaft assembly, the other end of the spiral spring is connected to the rotating shaft of the rotating shaft assembly, and the drive end of the reversible motor is connected to the rotating shaft of the rotating shaft assembly. By utilizing the bidirectional performance of the reversible motor, and based on the laws of electromagnetic induction and Faraday's law of electromagnetic induction, when the drive end of the reversible motor rotates forward, the spiral spring is tightened to store mechanical potential energy; when the drive end of the reversible motor rotates in reverse, the spiral spring is released to convert the mechanical potential energy into electrical energy for power supply. Through the coordinated control of the reversible motor and the spiral spring, the efficient integration of scattered electrical energy in metallurgical enterprises and the shifting of peak loads are realized. The electrical energy can also be stored in batteries to supplement power during peak electricity consumption, reducing production costs. Moreover, the structure is simple and easy to maintain. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional schematic diagram of a mechanical energy storage mechanism in one embodiment of the present invention;

[0023] Figure 2 This is a partial schematic diagram of the fixed-axis assembly in one embodiment of the present invention;

[0024] Figure 3 This is a partial schematic diagram of the rotating shaft assembly in one embodiment of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of a mechanical energy storage unit in one embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional schematic diagram of a mechanical energy storage device in one embodiment of the present invention.

[0027] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0028] Explanation of icon numbers:

[0029] 10. Mechanical energy storage mechanism; 110. Installation mechanism; 111. Top plate; 112. Chassis; 113. Column; 114. Top groove; 115. First bolt hole; 116. Bottom groove; 117. Second bolt hole; 120. Fixed shaft assembly; 121. Fixed shaft housing; 122. Fixed shaft; 130. Rotating shaft assembly; 131. Rotating shaft housing; 132. Rotating shaft; 140. Scroll spring; 150. Reversible motor; 160. Bolt. Detailed Implementation

[0030] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] Please see the appendix Figure 1-5 The mechanical energy storage device provided in one embodiment of the present invention includes a plurality of mechanical energy storage mechanisms 10 arranged at intervals. Each mechanical energy storage mechanism 10 includes a mounting mechanism 110 and a plurality of mechanical energy storage units arranged at intervals along the circumference of the mounting mechanism 110. The specific scheme is as follows:

[0035] Each of the mechanical energy storage units includes a fixed-axis assembly 120, a rotating shaft assembly 130, a spiral spring 140, and a reversible motor 150. The fixed-axis assembly 120 is connected to the top of the mounting mechanism 110, the rotating shaft assembly 130 is connected to the bottom of the mounting mechanism 110, one end of the spiral spring 140 is connected to the fixed shaft 122 of the fixed-axis assembly 120, and the other end of the spiral spring 140 is connected to the rotating shaft 132 of the rotating shaft assembly 130. The drive end of the reversible motor 150 is connected to the rotating shaft 132 of the rotating shaft assembly 130. When the drive end of the reversible motor 150 rotates forward, the spiral spring 140 is tightened to store mechanical potential energy; when the drive end of the reversible motor 150 rotates in reverse, the spiral spring 140 is released to convert the mechanical potential energy into electrical energy for power supply.

[0036] Specifically, the mechanical energy storage device in this application includes multiple spaced mechanical energy storage mechanisms 10, so that a large amount of electrical energy can be stored and output through the joint operation of multiple mechanical energy storage mechanisms 10. In a preferred embodiment of this application, the multiple mechanical energy storage mechanisms 10 are distributed in a matrix to improve space utilization. They can also be distributed in other forms such as a circle. Those skilled in the art can set them according to actual needs. Each mechanical energy storage mechanism 10 includes an installation mechanism 110 and multiple mechanical energy storage units. The installation mechanism 110 is used to install the mechanical energy storage units, and the mechanical energy storage units are used to store mechanical energy and convert the mechanical energy into electrical energy for power supply when electricity is needed. Therefore, by setting multiple mechanical energy storage units, the discharge capacity can be increased. Preferably, the number of mechanical energy storage units in each mechanical energy storage mechanism 10 is twelve. The twelve mechanical energy storage units are arranged at intervals along the circumference of the installation mechanism 110. The specific number can be selected by those skilled in the art according to actual conditions.

[0037] Each of the mechanical energy storage units includes a fixed-axis assembly 120, a rotating shaft assembly 130, a spiral spring 140, and a reversible motor 150. The storage and conversion of mechanical potential energy is achieved through the tensioning / relaxing of the spiral spring 140, a process primarily implemented by the reversible motor 150. The reversible motor 150 is a bidirectional rotating motor integrating a motor and a generator. Its principle is based on the laws of electromagnetic induction and Faraday's law of electromagnetic induction. Specifically, in motor mode, when the motor operates as a motor, torque is generated through electromagnetic induction from the power input, driving the motor. When the rotor rotates, it outputs mechanical energy. At this time, the motor converts electrical energy into mechanical energy. In this application, the generated torque drives the spiral spring 140 to open / close. In generator mode, when the motor is running as a generator, mechanical energy is input into the motor and generates electrical energy through electromagnetic induction. The electrical energy is then fed back to the power source (such as a battery). At this time, the motor converts mechanical energy into electrical energy. In this application, the mechanical energy generated by the contraction of the spiral spring 140 drives the motor to reverse to generate electrical energy. For ease of understanding, in this application, forward rotation corresponds to the motor mode, and reverse rotation corresponds to the generator mode.

[0038] It is worth mentioning that the output terminal of the reversible motor 150 can be electrically connected to the battery, so that the generated electrical energy can be stored in the battery for use when necessary. In other embodiments, it can also be directly connected to the target device for power consumption. It is understood that the output terminals of the reversible motors 150 of each mechanical energy storage unit can be combined during electrical connection and then centrally output to the battery or the target device. Therefore, to meet the above working conditions, the fixed axis assembly 120 is used for winding one end of the spiral spring 140, while the rotating shaft assembly 130 is used for winding the spiral spring 140. The other end of 40 is connected to a rotating shaft assembly. The difference is that the fixed shaft 122 of the fixed shaft assembly 120 is fixed, but the rotating shaft 132 of the rotating shaft assembly 130 is rotatable. This achieves a structure where one end is fixed and the other end rotates. The drive end (drive shaft) of the reversible motor 150 is connected to the rotating shaft 132, so that the rotation of the drive end of the reversible motor 150 and the rotation of the rotating shaft 132 are synchronized to achieve the tensioning / relaxation of the spiral spring 140 (tensioning corresponds to the unwinding state of the spiral spring 140, which has a preload; relaxation corresponds to the contracted state of the spiral spring 140, which is the initial natural form).

[0039] In a preferred embodiment of the present invention, the installation mechanism 110 includes a top plate 111, a chassis 112, and a plurality of columns 113 arranged circumferentially along the top plate 111, wherein the columns 113 are supported between the top plate 111 and the chassis 112.

[0040] It should be noted that this arrangement allows the fixed-axis assembly 120 and the rotating-axis assembly 130 to be distributed on the top plate 111 and the chassis 112 respectively, thereby increasing the spacing between them and increasing the space for the spiral spring 140 to unfold, thus reducing the number of layers wound in the rotating-axis assembly 130 and the fixed-axis assembly 120.

[0041] In a preferred embodiment of the present invention, the fixed-axis assembly 120 includes a fixed-axis housing 121 and a fixed-axis 122. The fixed-axis housing 121 is connected to the top plate 111, and an opening is provided on one side of the fixed-axis housing 121. The fixed-axis 122 is fixed in the fixed-axis housing 121, and one end of the spiral spring 140 extends into the opening end of the fixed-axis housing 121 and is connected to the fixed-axis 122.

[0042] It should be noted that the fixed shaft housing 121 is used for mounting and connecting the fixed shaft 122. It is connected to the top plate 111 so that the fixed shaft 122 is also located at the top plate 111. The opening on the fixed shaft housing 121 is used for the spiral spring 140 to pass through so that it can be wound around the fixed shaft 122.

[0043] In a preferred embodiment of the present invention, the rotating shaft assembly 130 includes a rotating shaft housing 131 and a rotating shaft 132. The rotating shaft housing 131 is connected to the chassis 112, and an opening is provided on one side of the rotating shaft housing 131. The rotating shaft 132 is fixed in the rotating shaft housing 131, and the other end of the spiral spring 140 extends into the opening end of the rotating shaft housing 131 and is connected to the rotating shaft 132.

[0044] It is worth noting that, similar to the fixed shaft assembly 120, the rotating shaft housing 131 is used for mounting and connecting the rotating shaft 132 to the chassis 112, so that the position of the rotating shaft 132 is also set at the chassis 112, and the opening on the rotating shaft housing 131 is used for the other end of the spiral spring 140 to pass through and connect with the rotating shaft 132.

[0045] In a preferred embodiment of the present invention, both the top plate 111 and the chassis 112 are ring-shaped, and the opening end of the fixed shaft housing 121 is located close to and facing the inner ring side of the top plate 111, while the opening end of the rotating shaft housing 131 is located close to and facing the inner ring side of the chassis 112.

[0046] It is worth noting that the ring-shaped arrangement can have an internal vertical extension space to facilitate the through connection of the spiral spring 140, so that the spiral spring 140 is located inside the entire mechanical energy storage mechanism 10, while the opening ends of the fixed shaft housing 121 and the rotating shaft housing 131 are both located close to the inner ring side, so that the spiral spring 140 is located in the inner ring of the ring.

[0047] Furthermore, the top plate 111 has a plurality of top grooves 114 spaced apart along its circumference, and the side wall of the top plate 111 has a plurality of first bolt holes 115 spaced apart along its circumference. Each top groove 114 is connected to a first bolt hole 115, and each top groove 114 is provided with a fixed shaft housing 121. The bolt 160 passes through the first bolt hole 115 and extends into the top groove 114 to press the fixed shaft housing 121.

[0048] It should be noted that the top groove 114 is used for mounting the fixed shaft housing 121, thereby fixing the fixed shaft housing 121 by means of bolt 160 abutting and pressing. Therefore, a first bolt hole 115 needs to be opened on the side wall of the top plate 111. Each top groove 114 corresponds to a first bolt hole 115. After the bolt 160 passes through the first bolt hole 115 and extends into the top groove 114, it abuts against the bottom end of the fixed shaft housing 121. By tightening, the fixed shaft housing 121 is pressed to achieve a fastening effect. This connection by bolt 160 also facilitates subsequent disassembly, maintenance and replacement.

[0049] Furthermore, the chassis 112 has a plurality of bottom grooves 116 spaced apart along its circumference, and the side wall of the chassis 112 has a plurality of second bolt holes 117 spaced apart along its circumference. Each bottom groove 116 is connected to a second bolt hole 117, and each bottom groove 116 is provided with a rotating shaft housing 131. Bolts 160 pass through the second bolt holes 117 and extend into the bottom groove 116 to press the rotating shaft housing 131.

[0050] It should be understood that, similar to the top groove 114, the bottom groove 116 is used for mounting the shaft housing 131. The shaft housing 131 is also fixed by bolts 160 abutting and pressing. Therefore, the second bolt hole 117 is used for the bolts 160 to pass through and extend into the bottom groove 116, and then abut against the bottom end of the shaft housing 131. By tightening, the fixed shaft housing 121 is pressed to achieve a fastening effect.

[0051] This application also provides a mechanical energy storage system, including a plurality of mechanical energy storage devices as described above, wherein the plurality of mechanical energy storage devices are sequentially spliced ​​together.

[0052] Understandably, multiple mechanical energy storage devices can be arranged in horizontal arrays or vertically stacked, and can be combined into a large mechanical energy storage system in circular, square or other arrays to store and output a large amount of electrical energy. The scale can be large or small, and the optimized deployment can be set according to the actual site and actual application needs.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mechanical energy storage device, characterized in that, It includes multiple mechanical energy storage mechanisms arranged at intervals, each of which includes a mounting mechanism and multiple mechanical energy storage units arranged at intervals along the circumference of the mounting mechanism; wherein, Each of the mechanical energy storage units includes a fixed-axis assembly, a rotating shaft assembly, a spiral spring, and a reversible motor. The fixed-axis assembly is connected to the top of the mounting mechanism, the rotating shaft assembly is connected to the bottom of the mounting mechanism, one end of the spiral spring is connected to the fixed axis of the fixed-axis assembly, the other end of the spiral spring is connected to the rotating shaft of the rotating shaft assembly, and the drive end of the reversible motor is connected to the rotating shaft of the rotating shaft assembly. Specifically, when the drive end of the reversible motor rotates forward, the spiral spring is tightened to store mechanical potential energy; when the drive end of the reversible motor rotates in reverse, the spiral spring is released to convert the mechanical potential energy into electrical energy for power supply.

2. The mechanical energy storage device according to claim 1, characterized in that, The installation mechanism includes a top plate, a chassis, and a plurality of columns spaced circumferentially along the top plate, the columns being supported between the top plate and the chassis.

3. The mechanical energy storage device according to claim 2, characterized in that, The fixed-axis assembly includes a fixed-axis housing and a fixed axis. The fixed-axis housing is connected to the top plate, and an opening is provided on one side of the fixed-axis housing. The fixed axis is fixed in the fixed-axis housing, and one end of the spiral spring extends into the opening end of the fixed-axis housing and is connected to the fixed axis.

4. The mechanical energy storage device according to claim 3, characterized in that, The rotating shaft assembly includes a rotating shaft housing and a rotating shaft. The rotating shaft housing is connected to the chassis, and an opening is provided on one side of the rotating shaft housing. The rotating shaft is fixed in the rotating shaft housing, and the other end of the spiral spring extends into the opening end of the rotating shaft housing and is connected to the rotating shaft.

5. The mechanical energy storage device according to claim 4, characterized in that, Both the top plate and the chassis are ring-shaped, and the opening end of the fixed shaft housing is located close to and facing the inner ring side of the top plate, while the opening end of the rotating shaft housing is located close to and facing the inner ring side of the chassis.

6. The mechanical energy storage device according to claim 3, characterized in that, The top plate has multiple top grooves spaced apart along its circumference, and the side wall of the top plate has multiple first bolt holes spaced apart along its circumference. Each top groove is connected to one of the first bolt holes, and each top groove is provided with a fixed shaft housing. Bolts pass through the first bolt holes and extend into the top groove to press the fixed shaft housing.

7. The mechanical energy storage device according to claim 4, characterized in that, The chassis has multiple bottom grooves spaced apart along its circumference, and the side wall of the chassis has multiple second bolt holes spaced apart along its circumference. Each bottom groove is connected to a second bolt hole, and each bottom groove contains a rotating shaft housing. Bolts pass through the second bolt holes and extend into the bottom groove to press the rotating shaft housing.

8. The mechanical energy storage device according to claim 1, characterized in that, The number of mechanical energy storage units in each mechanical energy storage mechanism is twelve, and the twelve mechanical energy storage units are arranged at intervals along the circumference of the installation mechanism.

9. The mechanical energy storage device according to claim 1, characterized in that, The multiple mechanical energy storage mechanisms are arranged in a matrix.

10. A mechanical energy storage system, characterized in that, It includes multiple mechanical energy storage devices as described in any one of claims 1-9, wherein the multiple mechanical energy storage devices are sequentially connected and arranged.

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