Gravity energy storage system and battery charging system

Abstract

The utility model relates to the technical field of energy storage equipment, and provides a gravity energy storage system and a battery charging system. The gravity energy storage system comprises an object storage area, a gravity energy storage area and a gravity energy storage area, the first conveying area is arranged on one side of the storage area and communicates with the storage area; the lifting device is arranged above the first conveying area, and the lifting device is used for lifting the mass block to a preset height; the energy conversion device is connected with the mass block, and the mass block can drive the energy conversion device to operate under the condition that gravitational potential energy is released; the efficiency lifting device comprises a first efficiency lifting assembly and / or a second efficiency lifting assembly, the first efficiency lifting assembly is arranged in the first conveying area and used for providing buoyancy for the mass block under the condition that the lifting device lifts the mass block, and the second efficiency lifting assembly is used for being attracted to the bottom of the mass block under the condition that the mass block releases gravitational potential energy. According to the technical scheme, the energy storage efficiency of the product can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a gravity energy storage system and a battery charging system. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Gravity energy storage is a mechanical energy storage system. Its energy storage medium is mainly divided into water and solid matter. The energy storage medium is raised and lowered based on the height difference to realize the charging and discharging process of the energy storage system. Due to the strong fluidity of water, the water medium gravity energy storage system can make use of well-sealed pipes, shafts and other structures. Its site selection flexibility and energy storage capacity are limited by the terrain and water sources. It is easier to build a large-scale energy storage system near natural water sources. Solid weight gravity energy storage mainly relies on structures such as mountains, underground shafts, and artificial structures. Heavy objects generally choose materials with higher density, such as metals, cement, sand and gravel, to achieve higher energy density.

[0004] In the related art, when a gravity energy storage system uses solid matter as an energy storage medium, there is energy loss in equipment such as lifting devices during the energy storage process of the gravity energy storage system, resulting in low energy storage efficiency of the system. Utility Model Content

[0005] In view of the above problems, the purpose of this application is to provide a gravity energy storage system and a battery charging system to improve the energy storage efficiency of the gravity energy storage system. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the present application provides a gravity energy storage system, comprising: a storage area, wherein a mass block is stored in the storage area; a first transport area, arranged at one side of the storage area and connected to the storage area; a lifting device, arranged above the first transport area, and the lifting device is used to lift the mass block to a preset height; an energy conversion device, connected to the mass block, and the mass block can drive the energy conversion device to operate when releasing gravitational potential energy; an efficiency improvement device, comprising a first efficiency improvement component and / or a second efficiency improvement component, the first efficiency improvement component is arranged in the first transport area, and is used to provide buoyancy to the mass block when the lifting device lifts the mass block, and the second efficiency improvement component is used to attract the bottom of the mass block when the mass block releases its gravitational potential energy.

[0007] In the above technical solution, by setting a first transport area on one side of the storage area, the first transport area can be connected to the storage area so that the mass block can be transferred between the storage area and the first transport area. A lifting device is provided at the top of the first transport area, and the lifting device can be connected to the mass block and lift the mass block to a preset height to store gravitational potential energy. The energy conversion device is connected to the mass block, and the gravitational potential energy can be converted into electrical energy through the energy conversion device when the mass block descends. In addition, by adding an efficiency improvement device to the gravity energy storage system, the first efficiency improvement component of the efficiency improvement device can provide a certain buoyancy to the mass block when the lifting device lifts the mass block, so as to reduce the lifting force required by the lifting device, thereby reducing the energy loss of the lifting device, and thus helping to improve the energy storage efficiency. In addition, the second efficiency improvement component of the efficiency improvement device can provide an attraction to the bottom of the mass block when the mass block releases the gravitational potential energy, so as to increase the equivalent gravitational acceleration when the mass block descends, thereby improving the conversion efficiency of the gravitational potential energy. It can be understood that only one of the first efficiency improvement component and the second efficiency improvement component can be set, or both can be set at the same time.

[0008] In addition, the gravity energy storage system provided by the present application may also have the following additional technical features:

[0009] In some embodiments of the present application, the first transport area has a liquid storage cavity, which is used to store liquid; the first efficiency improvement component includes a material preparation cavity arranged in the first transport area, the material preparation cavity is provided with a first valve on the side facing the storage area, and a second valve is provided on the top of the material preparation cavity, the first valve is configured to enable the material preparation cavity to communicate with the storage area, and the second valve is configured to enable the material preparation cavity to communicate with the liquid storage cavity.

[0010] In the above technical solution, the first transport area has a closed liquid storage chamber. When the gravity energy storage system has a first efficiency improvement component, the liquid in the liquid storage chamber cannot enter the material preparation chamber of the first efficiency improvement component before the second valve is opened. If there is liquid in the material preparation chamber before the first valve is opened, the liquid cannot be discharged from the material preparation chamber. Before the motor lifts the mass block, the first valve is opened first to transfer the mass block in the storage area to the material preparation chamber, and then the first valve is closed and the second valve is opened to allow the liquid in the liquid storage chamber to flow into the material preparation chamber and fill the material preparation chamber. Then the mass block is connected to the lifting device and the mass block is lifted to a preset height by the lifting device to store gravitational potential energy. When power generation is required, the mass block can be lowered to drive the energy conversion device to operate for power generation. In particular, since the mass block is subjected to the buoyancy of the liquid during the lifting process, the force required by the lifting device to lift the mass block can be reduced, thereby reducing the energy loss of the lifting device, which helps to improve the energy storage efficiency.

[0011] In some embodiments of the present application, the gravity energy storage system further includes a first transfer device, which is used to be connected to the mass block and transfer the mass block to above the storage area.

[0012] In the above technical solution, when the lifting device lifts the mass block to a preset height, the mass block can be transferred to the storage area through the first transfer device. At this time, the mass block stores gravitational potential energy, which is convenient for the mass block to release gravitational potential energy to drive the energy conversion device to generate electricity during power generation.

[0013] In some embodiments of the present application, the gravity energy storage system also includes a second transport area, which is arranged on opposite sides of the storage area corresponding to the first transport area, and the energy conversion device is arranged above the second transport area. The first transfer device is also used to transfer the mass block from the storage area to above the second transport area.

[0014] In the above technical solution, a second transport area is set on the other side of the storage area, and the position of the second transport area is opposite to that of the first transport area. In this way, it is convenient for the first transfer device to transfer the mass blocks with gravitational potential energy stored in the storage area to the second transport area, and it is convenient for the mass blocks to release the gravitational potential energy in the second transport area to convert the gravitational potential energy into electrical energy.

[0015] In some embodiments of the present application, the second efficiency improvement component includes a first magnetic member disposed at the bottom of the second transport area, and a second magnetic member disposed at the bottom of the mass block, and the first magnetic member and the second magnetic member are configured to attract each other.

[0016] In the above technical solution, by arranging a first magnetic component below the second transport area and a second magnetic component below the mass block, when the mass block releases gravitational potential energy (descending movement), the first magnetic component and the second magnetic component can be magnetically attracted to each other to improve the efficiency of converting gravitational potential energy into electrical energy, thereby further improving the energy storage efficiency of the gravity energy storage system.

[0017] In some embodiments of the present application, the storage area has a high-level storage area and a low-level storage area, the high-level storage area is located above the low-level storage area, the high-level storage area is used to store the mass block lifted by the lifting device, and the low-level storage area is used to provide the mass block to the material preparation chamber.

[0018] In the above technical solution, the high-position storage area is used to store the mass blocks lifted by the lifting device, and the number of mass blocks that can be stored can be multiple, so that when power generation is required, the gravitational potential energy stored in one or more mass blocks can be released in sequence to drive the energy conversion device to operate and generate electricity. The low-position storage area is located below the high-position storage area, and is used to store the mass blocks after the gravitational potential energy is released, so as to provide the mass blocks to the material preparation chamber in a recyclable manner.

[0019] In some embodiments of the present application, the gravity energy storage system also includes a second transfer device, which is used to transfer the mass blocks in the second transport area to the low-level storage area, and transfer the mass blocks in the low-level storage area to the material preparation chamber.

[0020] In the above technical solution, by adding a second transfer device in the storage area, the mass block can be transferred to the material preparation chamber through the second transfer device, thereby improving the efficiency of the mass block entering the material preparation chamber and facilitating the transfer of the mass block to the low-level storage area after releasing the gravitational potential energy in the second transport area.

[0021] In some embodiments of the present application, the material preparation chamber is disposed on one side of the bottom of the first transport area and is disposed close to the low-level storage area.

[0022] In the above technical solution, the material preparation chamber is arranged at the bottom of the first transport area to increase the lifting height of the mass block in the first transport area, thereby helping to increase the gravitational potential energy stored when the mass block is lifted to a preset height. The material preparation chamber is arranged close to the low-level storage area, thus facilitating the efficiency of transferring the mass blocks stored in the low-level storage area to the material preparation chamber.

[0023] In some embodiments of the present application, the gravity energy storage system further includes a replenishing device, which is used to be connected to a replenishing source and replenish liquid into the liquid storage chamber.

[0024] In the above technical solution, after the mass block in the material preparation chamber is lifted by the lifting device, the liquid in the material preparation chamber needs to be discharged before the mass block can be transferred into the material preparation chamber again. Therefore, in the process of cyclic injection and discharge of liquid in the material preparation chamber, the liquid in the liquid storage chamber will be continuously consumed. Therefore, by adding a supply device connected to the supply source and the liquid storage chamber, liquid can be replenished into the liquid storage chamber, so that the liquid in the liquid storage chamber can always meet the demand for injecting liquid into the material preparation chamber.

[0025] In some embodiments of the present application, the replenishing device includes a replenishing pump and a pipeline assembly connected to the replenishing pump, the pipeline assembly is connected to the liquid storage chamber, and the replenishing pump is connected to a replenishing source.

[0026] In the above technical solution, when the supply pump is in operation, the liquid of the supply source can be pumped into the liquid storage chamber through the pipeline assembly. The structure and principle are relatively simple and easy to implement.

[0027] In some embodiments of the present application, the lifting device includes an electric motor; and / or the energy conversion device includes a generator.

[0028] In a second aspect, the present application provides a battery charging system, comprising a gravity energy storage system according to any one of the embodiments of the first aspect, the battery charging system also comprising a battery, and the energy conversion device is configured to charge the battery.

[0029] The battery charging system provided in the second aspect of the present application includes the gravity energy storage system described in any one of the implementation modes of the first aspect, and therefore has the technical effects of any of the above implementation modes, which will not be described in detail here.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 A schematic diagram of the structure of a gravity energy storage system in a first state provided in some embodiments of the present application;

[0033] Figure 2 A schematic diagram of the structure of the second state of the gravity energy storage system provided in some embodiments of the present application;

[0034] Figure 3 A schematic structural diagram of the third state of a gravity energy storage system provided in some embodiments of the present application.

[0035] The reference numerals are as follows:

[0036] 100. Gravity energy storage system;

[0037] 10. Storage area; 20. First transport area; 30. Mass block; 40. Lifting device; 50. Energy conversion device; 60. Second transport area; 70. First magnetic attraction member;

[0038] 11. High-level storage area; 12. Low-level storage area; 13. First transfer device; 14. Second transfer device; 21. Liquid storage chamber; 22. Material preparation chamber;

[0039] 221, first valve; 222, second valve. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] Gravity energy storage is a mechanical energy storage system. Its energy storage medium is mainly divided into water and solid matter. The energy storage medium is raised and lowered based on the height difference to realize the charging and discharging process of the energy storage system. Due to the strong fluidity of water, the water medium gravity energy storage system can make use of well-sealed pipes, shafts and other structures. Its site selection flexibility and energy storage capacity are limited by the terrain and water sources. It is easier to build a large-scale energy storage system near natural water sources. Solid weight gravity energy storage mainly relies on structures such as mountains, underground shafts, and artificial structures. Heavy objects generally choose materials with higher density, such as metals, cement, sand and gravel, to achieve higher energy density.

[0049] In the related art, when a gravity energy storage system uses solid matter as an energy storage medium, there is energy loss in equipment such as lifting devices during the energy storage process of the gravity energy storage system, resulting in low energy storage efficiency of the system.

[0050] In order to solve the problem of low energy storage efficiency of gravity energy storage system, the present application designs a gravity energy storage system, which has a storage area and a first transport area located on one side of the storage area. A lifting device for providing a mass block is arranged on the top of the first transport area, wherein the first transport area is provided with a closed liquid storage chamber and a material preparation chamber, wherein the liquid storage chamber stores liquid, the side of the material preparation chamber facing the storage area can be opened or closed by a first valve, and the top side of the material preparation chamber can be opened or closed by a second valve. Before the lifting device lifts the mass block, the first valve is opened first, and the mass block in the storage area is transferred to the material preparation chamber, and then the first valve is closed and the second valve is opened, so that the liquid in the injection chamber enters the material preparation chamber to provide a certain buoyancy to the mass block. In this way, in the process of lifting the mass block, the lifting device can be subjected to the buoyancy, thereby relatively reducing the lifting force of the lifting device and reducing the energy loss of the lifting device, thereby improving the energy storage efficiency of the product.

[0051] The gravity energy storage system 100 disclosed in the embodiment of the present application is used to store the gravitational potential energy of mass blocks such as metal, cement, sand and gravel, and release the gravitational potential energy of the mass blocks when needed to drive the energy conversion device to operate and generate electricity.

[0052] See also Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a gravity energy storage system in a first state provided in some embodiments of the present application; Figure 2 A schematic diagram of the structure of the second state of the gravity energy storage system provided in some embodiments of the present application; Figure 3 A structural schematic diagram of the third state of a gravity energy storage system provided for some embodiments of the present application. The embodiment of the present application provides a gravity energy storage system 100, including: a storage area 10, a first transport area 20, a mass block 30, a lifting device 40, an energy conversion device 50 and an efficiency improvement device. Among them, the storage area 10 stores the mass block 30; the first transport area is arranged on one side of the storage area 10 and is connected to the storage area 10; the lifting device 40 is arranged above the first transport area 20, and the lifting device 40 is used to lift the mass block 30 to a preset height; the energy conversion device 50 is connected to the mass block 30, and the mass block 30 can drive the energy conversion device 50 to operate when releasing the gravitational potential energy; the efficiency improvement device 40 includes a first efficiency improvement component and / or a second efficiency improvement component, the first efficiency improvement component is arranged in the first transport area 20, and is used to provide buoyancy to the mass block 30 when the lifting device 40 lifts the mass block 30, and the second efficiency improvement component is used to attract the bottom of the mass block 30 when the mass block 30 releases the gravitational potential energy.

[0053] The storage area 10 is used to store one or more mass blocks 30 , which may be solid heavy blocks such as metal, cement, sand and gravel.

[0054] Specifically, the mass block 30 is in the shape of an elongated column, and the cross-sectional area of ​​the mass block 30 is small.

[0055] The first transport area 20 is used to provide a space required by the lifting device 40 to lift the mass block 30, so that the gravity potential energy is stored when the mass block 30 is lifted to a preset height.

[0056] Exemplarily, the lifting device 40 may be an electric motor or an engine.

[0057] Exemplarily, the energy conversion device 50 is a device for converting the gravitational potential energy of the mass 30 into electrical energy, such as a generator.

[0058] By setting the first transport area 20 on one side of the storage area 10, the first transport area 20 can be connected to the storage area 10, so that the mass block 30 can be transferred between the storage area 10 and the first transport area 20. A lifting device 40 is set on the top of the first transport area 20, and the lifting device 40 can be connected to the mass block 30 and lift the mass block 30 to a preset height to store gravitational potential energy. The energy conversion device 50 is connected to the mass block 30, and when the mass block 30 descends, the gravitational potential energy can be converted into electrical energy through the energy conversion device 50. In addition, by adding an efficiency improvement device 40 to the gravity energy storage system, the first efficiency improvement component of the efficiency improvement device 40 can provide a certain buoyancy to the mass block 30 when the lifting device 40 lifts the mass block 30, so as to reduce the lifting force required by the lifting device 40, thereby reducing the energy loss of the lifting device 40, and then helping to improve the energy storage efficiency. In addition, the second efficiency improvement component of the efficiency improvement device 40 can provide an attraction to the bottom of the mass block 30 when the mass block 30 releases the gravitational potential energy, so as to increase the equivalent gravitational acceleration when the mass block 30 descends, thereby improving the conversion efficiency of the gravitational potential energy. It can be understood that only one of the first efficiency improvement component and the second efficiency improvement component can be set, or both can be set at the same time.

[0059] According to some embodiments of the present application, the first transport area 20 has a liquid storage chamber 21, and the liquid storage chamber 21 is used to store liquid; the first efficiency improvement component includes a material preparation chamber 22 arranged in the first transport area 20, and the material preparation chamber 22 is provided with a first valve 221 on the side facing the storage area 10, and a second valve 222 is provided on the top of the material preparation chamber 22, the first valve 221 is configured to enable the material preparation chamber 22 to be connected to the storage area 10, and the second valve 222 is configured to enable the material preparation chamber 22 to be connected to the liquid storage chamber 21.

[0060] Exemplarily, a stop area of ​​the mass block 3030 is defined above the liquid storage chamber 2121 , and there is no liquid in the stop area of ​​the mass block 3030 . When the mass block 3030 is lifted to a preset height, it is located in the stop area.

[0061] Exemplarily, the liquid is a solvent with water as the medium and a soluble salt or a soluble gas dissolved therein, so that the density of the liquid is relatively large.

[0062] Exemplarily, the first valve 221 and the second valve 222 provided in the material preparation chamber 22 are similar to the opening and closing door structure of an elevator. When the first valve 221 is opened, the material preparation chamber 22 is open on one side facing the storage area 1010. When the second valve 222 is opened, the top of the material preparation chamber 22 is open.

[0063] The first transport area 20 has a sealed liquid storage chamber 21. When the gravity energy storage system has a first efficiency improvement component, the liquid in the liquid storage chamber 21 cannot enter the material preparation chamber 22 of the first efficiency improvement component before the second valve 222 is opened. If there is liquid in the material preparation chamber 22 before the first valve 221 is opened, the liquid cannot be discharged from the material preparation chamber 22. Before the motor lifts the mass block 30, the first valve 221 is opened first to transfer the mass block 30 of the storage area 10 to the material preparation chamber 22, and then the first valve 221 is closed and the second valve 222 is opened to allow the liquid in the liquid storage chamber 21 to flow into the material preparation chamber 22 and fill the material preparation chamber 22. Then the mass block 30 is connected to the lifting device 40 and the mass block 30 is pulled up to a preset height by the lifting device 40 to store gravitational potential energy. When power generation is required, the mass block 30 can be lowered to drive the energy conversion device 50 to operate to generate power. Among them, since the mass block 30 is affected by the buoyancy of the liquid during the process of being pulled up, the force required for the lifting device 40 to pull up the mass block 30 can be reduced, thereby reducing the energy loss of the lifting device 40, which helps to improve the energy storage efficiency.

[0064] According to some embodiments of the present application, the material preparation chamber 22 is arranged on the side of the first transport area 20 facing the storage area 10, and the material preparation chamber 22 is also provided with a third valve (not shown in the figure), which is arranged on the bottom side of the material preparation chamber 22 and is spaced apart from the first valve 221. The third valve is configured to enable liquid to enter from the bottom of the material preparation chamber 22.

[0065] By setting a third valve on one side of the bottom of the material preparation chamber 22, when the mass block 30 is transferred into the material preparation chamber 22, the third valve is opened to allow liquid to enter the material preparation chamber 22 from the bottom and provide a certain buoyancy to the mass block 30. When the liquid has not completely immersed the mass block 30, the second valve on the top of the material preparation chamber 22 is opened, and the lifting device 40 is controlled to operate, so as to cooperate with the buoyancy of the liquid to drive the mass block 30 to rise, thereby reducing the energy loss of the lifting device 40.

[0066] According to some embodiments of the present application, the gravity energy storage system 100 further includes a first transfer device 13 , which is used to be connected to the mass block 30 and transfer the mass block 30 to the top of the storage area 10 .

[0067] Exemplarily, the lifting device 40 is disposed near the storage area 10, the storage area 10 has a supporting structure and a transfer track disposed on the supporting structure, and the first transfer device 13 includes a transfer trolley, which can reciprocate along the transfer track.

[0068] When the lifting device 40 lifts the mass block 30 to a preset height, the mass block 30 can be transferred to the storage area 10 through the first transfer device 13. At this time, the mass block 30 stores gravitational potential energy, which is convenient for the mass block 30 to release gravitational potential energy to drive the energy conversion device 50 to generate electricity during power generation.

[0069] See also Figures 1 to 3 According to some embodiments of the present application, the gravity energy storage system also includes a second transport area 60, which is arranged on opposite sides of the storage area 10 corresponding to the first transport area 20, and the energy conversion device 50 is arranged above the second transport area 60. The first transfer device is also used to transfer the mass block 30 from the storage area 10 to above the second transport area 60.

[0070] Exemplarily, the second transport area 60 and the first transport area 20 are symmetrically arranged on opposite sides of the storage area 10. The second transport area 60 is used to provide a descending space for the mass block 30, so that the mass block 30 can release gravitational potential energy in the second transport area 60.

[0071] By setting up a second transport area 60 on the other side of the storage area 10, the position of the second transport area 60 is opposite to that of the first transport area 20, so that it is convenient for the first transfer device 13 to transfer the mass block 30 with gravitational potential energy stored in the storage area 10 to the second transport area 60, and it is convenient for the mass block 30 to release the gravitational potential energy in the second transport area 60 to convert the gravitational potential energy into electrical energy.

[0072] According to some embodiments of the present application, the second efficiency improvement component includes a first magnetic component 70 and a second magnetic component (not shown in the figure), the first magnetic component 70 is arranged at the bottom of the second transport area 60, and the second magnetic component is arranged at the bottom of the mass block 30, and the first magnetic component 70 and the second magnetic component are configured to attract each other when the mass block 30 releases gravitational potential energy.

[0073] Exemplarily, the first magnetic attraction member 70 and the second magnetic attraction member are electromagnetic attraction members that can attract each other when powered on, and can also be magnetic attraction members such as magnets and magnets.

[0074] By disposing a first magnetic member 70 below the second transport area 60 and a second magnetic member below the mass block 30, when the mass block 30 releases gravitational potential energy (descending motion), the first magnetic member 70 and the second magnetic member can be magnetically attracted to each other to increase the equivalent gravitational acceleration during the descent of the mass block 30, improve the efficiency of converting gravitational potential energy into electrical energy, and thus further improve the energy storage efficiency of the gravity energy storage system 100.

[0075] See also Figures 1 to 3 According to some embodiments of the present application, the storage area 10 has a high-level storage area 11 and a low-level storage area 12. The high-level storage area 11 is located above the low-level storage area 12. The high-level storage area 11 is used to store the mass block 30 lifted by the lifting device 40, and the low-level storage area 12 is used to provide the mass block 30 to the material preparation chamber 22.

[0076] The high storage area 11 and the low storage area 12 are spaced apart in the height direction, and there is an empty area between them.

[0077] The high-position storage area 11 is used to store the mass blocks 30 lifted by the lifting device 40. The number of mass blocks 30 that can be stored can be multiple, so that when power generation is required, the gravitational potential energy stored in one or more mass blocks 30 can be released in sequence to drive the energy conversion device 50 to operate and generate electricity. The low-position storage area 12 is located below the high-position storage area 10 and is used to store the mass blocks 30 after the gravitational potential energy is released, so as to provide the mass blocks 30 to the material preparation chamber 22 in a recycle manner.

[0078] According to some embodiments of the present application, the gravity energy storage system 100 also includes a second transfer device 14, which is used to transfer the mass block 30 of the second storage area 10 to the low-level storage area 12, and transfer the mass block in the low-level storage area 12 to the material preparation chamber 22.

[0079] Exemplarily, the low-level storage area 12 also has a transfer track, and the second transfer device 14 includes a transfer trolley, which can reciprocate along the transfer track.

[0080] By adding a second transfer device 14 in the storage area 10, the mass block 30 can be transferred to the material preparation chamber 22 through the second transfer device 14, thereby improving the efficiency of the mass block 30 entering the material preparation chamber 22 and facilitating the transfer of the mass block 30 to the low-level storage area 12 after releasing the gravitational potential energy in the second transport area 60.

[0081] See also Figures 1 to 3 According to some embodiments of the present application, the material preparation chamber 22 is disposed on one side of the bottom of the first transport area and is disposed close to the low-level storage area 12 .

[0082] By arranging the material preparation chamber 22 at the bottom of the first transport area, the lifting height of the mass block 30 in the first transport area 20 is increased, which helps to increase the gravitational potential energy stored when the mass block 30 is lifted to a preset height. In addition, the material preparation chamber 22 is arranged close to the low-level storage area 12, so it is also convenient to transfer the mass block 30 stored in the low-level storage area 12 to the material preparation chamber 22.

[0083] According to some embodiments of the present application, the gravity energy storage system 100 further includes a replenishing device, which is used to be connected to a replenishing source and replenish liquid into the liquid storage chamber 21 .

[0084] For example, the gravity energy storage system 100 provided in the present application can rely on natural terrain or artificial buildings with water sources to replenish medium water for the device so that it can work continuously.

[0085] Since the mass block 30 in the material preparation chamber 22 is lifted by the lifting device 40, the liquid in the material preparation chamber 22 needs to be discharged before the mass block 30 can be transferred into the material preparation chamber 22 again. Therefore, in the process of cyclic injection and discharge of liquid in the material preparation chamber 22, the liquid in the liquid storage chamber 21 will be continuously consumed. Therefore, by adding a supply device connected to the supply source and the liquid storage chamber 21, liquid can be replenished into the liquid storage chamber 21, so that the liquid in the liquid storage chamber 21 can always meet the demand for injecting liquid into the material preparation chamber 22.

[0086] According to some embodiments of the present application, the replenishing device includes a replenishing pump and a pipeline assembly connected to the replenishing pump, the pipeline assembly is connected to the liquid storage chamber 21, and the replenishing pump is connected to the replenishing source.

[0087] Exemplarily, a one-way valve is provided on the pipeline assembly. When the supply pump is running, the one-way valve is opened so that the supply pump can pump the liquid from the supply source into the liquid storage chamber 21 through the pipeline assembly. The structure and principle are relatively simple and easy to implement.

[0088] According to some embodiments of the present application, the gravity energy storage system 100 further includes an industrial computer, which is electrically connected to the first valve 221 , the second valve 222 and the lifting device 40 .

[0089] The industrial computer has a programmable controller. The first valve 221 and the second valve 222 are automatically opened or closed by the industrial computer, and the lifting device 40 is also started or stopped by the industrial computer, thereby reducing labor costs and improving energy storage efficiency.

[0090] According to some embodiments of the present application, the lifting device includes an electric motor.

[0091] It can be understood that the motor can be connected to the mass block 30 via a rope, and the motor can provide a lifting force to lift the mass block 30 when it is running.

[0092] According to some embodiments of the present application, the energy conversion device includes a generator.

[0093] It can be understood that the mass block 30 can drive the generator to operate and generate electricity in the process of releasing gravitational potential energy when descending.

[0094] According to some embodiments of the present application, see Figures 1 to 3 The present application provides a gravity energy storage system 100 , comprising: a storage area 10 , a first transport area 20 , a second transport area 60 , a lifting device 40 and an energy conversion device 50 . Among them, the first transport area 20 and the second transport area 60 are symmetrically arranged on opposite sides of the storage area 10, the first transport area 20 has a liquid storage chamber 21 and a material preparation chamber 22, the liquid storage chamber 21 stores liquid, the material preparation chamber 22 is immersed in the liquid, a first valve 221 is provided on the side of the material preparation chamber 22 facing the storage area 10, and a second valve 222 is provided on the top of the material preparation chamber 22, the first valve 221 is configured to enable the material preparation chamber 22 to communicate with the storage area 10, and the second valve 222 is configured to enable the material preparation chamber 22 to communicate with the liquid storage chamber 21; the lifting device 40 is arranged above the liquid storage chamber 21, and the lifting device 40 is used to lift the mass block 30 to a preset height; the energy conversion device 50 is arranged above the second transport area 60, and is used to be connected to the mass block 30, and the mass block 30 can drive the energy conversion device 50 to operate when releasing gravitational potential energy. The storage area 10 includes a high storage area 11 and a low storage area 12. The high storage area 11 is used to store the mass block 30 lifted by the lifting device 40, and the low storage area 12 is used to provide the mass block 30 to the material preparation chamber 22. Through the technical solution of the present application, the equivalent gravitational acceleration to which the mass block 30 is subjected when being lifted by the lifting device 40 can be reduced, so as to reduce the energy loss of the lifting device 40, thereby improving the energy storage efficiency of the product.

[0095] According to some embodiments of the present application, the present application also provides a battery charging system, including the gravity energy storage system according to any of the above embodiments, the battery charging system also includes a battery, and the energy conversion device is configured to charge the battery.

[0096] The battery charging system provided in the second aspect of the present application includes the gravity energy storage system described in any one of the implementation modes of the first aspect, and therefore has the technical effects of any of the above embodiments, which will not be described in detail here.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A gravity energy storage system, characterized in that: include: A storage area, wherein the storage area stores mass blocks; A first transport area, which is disposed on one side of the storage area and is in communication with the storage area; A lifting device, disposed above the first transport area, and used to lift the mass block to a preset height; An energy conversion device connected to the mass block, wherein the mass block can drive the energy conversion device to operate when releasing gravitational potential energy; The efficiency improving device comprises a first efficiency improving component and / or a second efficiency improving component, wherein the first efficiency improving component is arranged in the first transport area and is used to provide buoyancy to the mass block when the lifting device lifts the mass block, and the second efficiency improving component is used to attract the bottom of the mass block when the mass block releases gravitational potential energy.

2. The gravity energy storage system according to claim 1, characterized in that: The first transport area has a liquid storage cavity, and the liquid storage cavity is used to store liquid; The first efficiency improvement component includes a material preparation chamber arranged in the first transport area, a first valve is provided on the side of the material preparation chamber facing the storage area, and a second valve is provided on the top of the material preparation chamber, the first valve is configured to enable the material preparation chamber to be connected to the storage area, and the second valve is configured to enable the material preparation chamber to be connected to the liquid storage chamber.

3. The gravity energy storage system according to claim 2, characterized in that: The gravity energy storage system also includes a first transfer device, which is used to connect with the mass block and transfer the mass block to the top of the storage area.

4. The gravity energy storage system according to claim 3, characterized in that: The gravity energy storage system also includes a second transport area, which is respectively arranged on opposite sides of the storage area with the first transport area. The energy conversion device is arranged above the second transport area, and the first transfer device is also used to transfer the mass block from the storage area to above the second transport area.

5. The gravity energy storage system according to claim 4, characterized in that: The second efficiency improvement component includes a first magnetic member disposed at the bottom of the second transport area, and a second magnetic member disposed at the bottom of the mass block, and the first magnetic member and the second magnetic member are configured to attract each other.

6. The gravity energy storage system according to claim 4, characterized in that: The storage area comprises a high-position storage area and a low-position storage area, wherein the high-position storage area is located above the low-position storage area, the high-position storage area is used to store the mass blocks lifted by the lifting device, and the low-position storage area is used to provide mass blocks to the material preparation chamber.

7. The gravity energy storage system according to claim 6, characterized in that: The gravity energy storage system also includes a second transfer device, which is used to transfer the mass blocks in the second transport area to the low-level storage area, and to transfer the mass blocks in the low-level storage area to the material preparation chamber.

8. The gravity energy storage system according to claim 6, characterized in that: The material preparation chamber is arranged at one side of the bottom of the first transport area and is close to the low-level storage area.

9. The gravity energy storage system according to claim 2, characterized in that: The gravity energy storage system also includes a replenishing device, which is used to replenish liquid into the liquid storage chamber.

10. The gravity energy storage system according to claim 9, characterized in that: The replenishing device comprises a replenishing pump and a pipeline assembly connected to the replenishing pump, the pipeline assembly is communicated with the liquid storage chamber, and the replenishing pump is connected to a replenishing source.

11. The gravity energy storage system according to any one of claims 1 to 8, characterized in that: The lifting device comprises an electric motor; And / or, the energy conversion device includes a generator.

12. A battery charging system, characterized in that: Comprising the gravity energy storage system according to any one of claims 1 to 11, the battery charging system further comprises a battery, and the energy conversion device is configured to charge the battery.

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