Modular energy storage device and modular energy storage device system

Abstract

This utility model discloses a modular energy storage device and system, belonging to the field of energy storage technology, and is designed to solve the problem of inconvenient transportation of existing energy storage cabinets. The modular energy storage device disclosed in this utility model includes: an electrical compartment assembly, including a power transfer terminal and a power supply unit; and a battery compartment assembly, detachably connected to the top of the electrical compartment assembly, the battery compartment assembly including a power output terminal; the electrical compartment assembly and the battery compartment assembly form an integral structure after assembly, the power output terminal is detachably connected to the power transfer terminal, and the power supply unit can be connected to the energy storage unit inside the battery compartment assembly through the power transfer terminal and the power output terminal. The modular energy storage device and system disclosed in this utility model combine the advantages of existing container cabinets and commercial cabinets, making transportation more convenient and reducing transportation costs; by spreading the transportation costs evenly across the total power capacity of the modular energy storage device, the unit transportation cost per kilowatt-hour is lower.

Description

Technical Field

[0001] This utility model relates to the field of energy storage device technology, and in particular to modular energy storage devices and modular energy storage device systems. Background Technology

[0002] Commercial and industrial energy storage cabinets are electrical energy storage devices widely used in various industrial and commercial sectors. They can efficiently store and release large amounts of electrical energy, balance grid load, and improve the stability and efficiency of the power system. They can also serve as emergency backup power sources, providing stable power support to users during periods of insufficient power supply or grid failure.

[0003] Containerized energy storage units are too large, making them inconvenient for customers to install in a lightweight manner, and installation is also inconvenient. Commercial and industrial energy storage cabinets are slightly smaller in size, making them easier to transport and install than containerized energy storage units. Compared to containerized energy storage units, commercial and industrial energy storage cabinets have a smaller storage capacity. When the transportation cost is evenly distributed across the amount of electricity contained in the transported energy storage unit, the transportation cost per kilowatt-hour for commercial and industrial energy storage cabinets is higher than that for containerized energy storage units. In addition, even though existing commercial and industrial energy storage cabinets are only slightly smaller than containerized energy storage units, they still suffer from inconvenient transportation and high handling costs. Utility Model Content

[0004] The purpose of this invention is to propose a modular energy storage device and a modular energy storage device system, which solves the problem of inconvenient transportation of existing energy storage cabinets and reduces transportation costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A modular energy storage device includes: an electrical compartment assembly, including a power transfer terminal and a power supply unit for connecting to an external electrical device; and a battery compartment assembly, detachably connected to the top of the electrical compartment assembly, the battery compartment assembly including a power output terminal; the electrical compartment assembly and the battery compartment assembly are assembled to form an integral structure, the power output terminal is detachably connected to the power transfer terminal, and the power supply unit can be connected to an energy storage unit within the battery compartment assembly through the power transfer terminal and the power output terminal.

[0007] In one preferred embodiment, the electrical compartment assembly includes an electrical compartment body and an electrical compartment fastener, and the battery compartment assembly includes a battery compartment body and a battery compartment fastener. After the electrical compartment assembly and the battery compartment assembly are assembled, the electrical compartment fastener and the battery compartment fastener are locked together to form an integral structure.

[0008] In one preferred embodiment, the electrical compartment fixing member has an electrical compartment handling hole for inserting handling fixtures.

[0009] In one preferred embodiment, the top edge of the side of the electrical compartment body is recessed inward to form an electrical compartment mounting recess, the electrical compartment fastener is located in the electrical compartment mounting recess, and the electrical compartment fastener protrudes at most partially from the side of the electrical compartment body.

[0010] In one preferred embodiment, the battery compartment fixing member is provided with a battery compartment transport hole, which is used to pass through a transport fixture.

[0011] In one preferred embodiment, the bottom edge of the side of the battery compartment body is recessed inward to form a battery compartment mounting recess, the battery compartment fastener is located in the battery compartment mounting recess, and the battery compartment fastener protrudes at most partially from the side of the battery compartment body.

[0012] In one preferred embodiment, the electrical compartment assembly further includes a support member and an outward protrusion that are connected or integrally formed. The support member is installed on the outer periphery of the bottom edge of the electrical compartment body, and a height difference A is formed between the bottom plate of the support member and the bottom edge of the electrical compartment body. The outward protrusion protrudes from the side of the electrical compartment body.

[0013] In one preferred embodiment, the support member has an electrical compartment handling hole for inserting handling fixtures.

[0014] In one preferred embodiment, the cross-sectional dimensions of the electrical compartment body are the same as those of the battery compartment body in the horizontal direction.

[0015] On the other hand, the present invention adopts the following technical solution:

[0016] A modular energy storage system includes at least two of the above-described modular energy storage devices, with adjacent modular energy storage devices arranged side-by-side and / or back-to-back.

[0017] This utility model discloses a modular energy storage device that can achieve different energy storage levels by replacing different battery compartment components. This increases energy storage capacity without significantly increasing the overall size, solving the problem of low energy storage in existing ordinary industrial and commercial energy storage cabinets. Compared to containerized cabinets with the same energy storage capacity, this modular energy storage device occupies less space and has less stringent requirements for site area. The electrical compartment component and battery compartment component are assembled into a single structure, preventing separation from collisions and vibrations, thus enhancing safety. During transportation, the electrical compartment component and battery compartment component can be disassembled, requiring only one component to be moved at a time, eliminating the need for large handling equipment or frame construction, making transportation more convenient, efficient, and cost-effective. Furthermore, by spreading transportation costs across the total capacity of the modular energy storage device, the unit transportation cost per kilowatt-hour is lower, increasing user profits.

[0018] The modular energy storage system disclosed in this utility model includes at least two of the above-mentioned modular energy storage devices, which combine the advantages of existing container cabinets and commercial cabinets, while making up for their respective shortcomings, resulting in strong product competitiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the modular energy storage device system provided in a specific embodiment of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the electrical compartment assembly provided in a specific embodiment of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the battery compartment assembly provided in a specific embodiment of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the modular energy storage device provided in a specific embodiment of this utility model.

[0023] In the picture:

[0024] 1. Electrical compartment assembly; 2. Battery compartment assembly; 11. Electrical compartment main body; 12. Electrical compartment fastener; 13. Electrical compartment transport hole; 14. Support component; 15. Outward protrusion; 21. Battery compartment main body; 22. Battery compartment fastener; 23. Battery compartment transport hole. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] This embodiment discloses a modular energy storage device and a modular energy storage system, capable of storing electrical energy for use by users in various industrial and commercial sectors. For example... Figure 1 As shown, the modular energy storage system includes at least two modular energy storage devices, with adjacent modular energy storage devices arranged side-by-side and / or back-to-back. It is understood that, in addition to side-by-side and / or back-to-back arrangements, the modular energy storage devices can also be assembled in other shapes.

[0032] The specific number of modular energy storage devices included in the modular energy storage system is not limited, as long as it meets the user's requirements for electricity (stored energy) and the site area requirements. In this embodiment, the modular energy storage system includes six modular energy storage devices arranged side by side. The total stored energy is not limited; it can be able to release / store energy in two hours, with a maximum capacity of 8 MWh; or it can be able to release / store energy in four hours, with a maximum capacity of 16 MWh.

[0033] like Figures 2 to 4As shown, the modular energy storage device includes an electrical compartment assembly 1 containing various electrical components and a battery compartment assembly 2 for storing electrical energy. The battery compartment assembly 2 is detachably connected to the top of the electrical compartment assembly 1 and the two are fixed together. The electrical compartment assembly 1 includes a power transfer terminal and a power supply unit for connecting to external electrical equipment. The battery compartment assembly 2 includes a power output terminal, which is detachably connected to the power transfer terminal, enabling the transfer of electrical energy from the battery compartment assembly 2 to the electrical compartment assembly 1. The power supply unit can be connected to the energy storage unit within the battery compartment assembly 2 via the power transfer terminal and the power output terminal. Users can obtain power by simply connecting the power cord of their electrical appliances to the power supply unit, making it convenient to use.

[0034] The specific energy storage capacity of battery compartment component 2 is unlimited and can be selected according to user needs. When selecting battery compartment component 2 with high energy storage capacity, the modular energy storage device and the modular energy storage system composed of multiple modular energy storage devices can increase energy storage capacity without significantly increasing the volume, solving the problem of low energy storage capacity in existing general industrial and commercial energy storage cabinets, and has a wide range of applications. Compared with container cabinets with the same energy storage capacity, this modular energy storage device and the modular energy storage system composed of multiple modular energy storage devices have a smaller footprint and no strict requirements on site area. In other words, this modular energy storage device and the modular energy storage system composed of multiple modular energy storage devices combine the advantages of existing container cabinets and industrial and commercial cabinets, while making up for their respective disadvantages, resulting in strong product competitiveness.

[0035] After assembly, the electrical compartment component 1 and battery compartment component 2 form a single integrated structure. Collisions and vibrations will not cause them to separate, ensuring safer operation. During transportation, the electrical compartment component 1 and battery compartment component 2 can be disassembled. Only one component needs to be moved at a time, eliminating the need for large handling equipment or a frame for transport, making transportation more convenient, efficient, and cost-effective. By spreading transportation costs across the total capacity of the modular energy storage device, the detachable structure of the electrical compartment component 1 and battery compartment component 2 reduces the unit transportation cost per kilowatt-hour, increasing user profits.

[0036] In this embodiment, a maximum of six modular energy storage devices can be transported in a single shipment in a 20-foot container. Each modular energy storage device has a storage capacity of 835 kWh, so the capacity of the modular energy storage system loaded in a single shipment can reach 5 MWh, resulting in lower transportation costs per kWh after distribution.

[0037] The specific arrangement for assembling the electrical compartment assembly 1 and the battery compartment assembly 2 into an integral structure is not limited. In this embodiment, the electrical compartment assembly 1 includes an electrical compartment body 11 and an electrical compartment fastener 12, and the battery compartment assembly 2 includes a battery compartment body 21 and a battery compartment fastener 22. After the electrical compartment assembly 1 and the battery compartment assembly 2 are assembled, the electrical compartment fastener 12 and the battery compartment fastener 22 are locked together to form an integral structure.

[0038] The specific locking mechanism between the electrical compartment fixing component 12 and the battery compartment fixing component 22 is not limited. It can be a snap-fit ​​connection, bolt connection, or any other method that can achieve a stable and detachable connection between the two devices in the existing technology.

[0039] To reduce space requirements, the cross-sectional dimensions of the electrical compartment body 11 are the same as those of the battery compartment body 21 in the horizontal direction. That is, when the size of the electrical compartment body 11 does not exceed the size of existing general industrial and commercial energy storage cabinets, the floor space occupied by this modular energy storage device will not exceed that of existing general industrial and commercial energy storage cabinets, making it easier to replace existing general industrial and commercial energy storage cabinets and more convenient to use.

[0040] Based on the above structure, the electrical compartment fixing component 12 is provided with an electrical compartment handling hole 13, which is used to pass through handling fixtures. The electrical compartment fixing component 12 with the hole is similar to a container corner fitting. Forklifts, cranes, etc. used to move containers can also be used to move this modular energy storage device, thereby improving the efficiency of loading (ships, aircraft), unloading (ships, aircraft), and transportation of the modular energy storage device and reducing transportation costs.

[0041] To minimize the footprint, in this embodiment, the top edge of the side of the electrical compartment body 11 is recessed inward to form an electrical compartment mounting recess, and the electrical compartment fastener 12 is located in the electrical compartment mounting recess. The electrical compartment fastener 12 protrudes at most from the side of the electrical compartment body 11, and the outer perimeter of the electrical compartment assembly 1 is basically equal to the outer perimeter of the electrical compartment body 11. The electrical compartment fastener 12 does not significantly increase the footprint of the electrical compartment body 11, requires less space, and is easy to replace existing general industrial and commercial energy storage cabinets.

[0042] Based on the above structure, the battery compartment fixing member 22 is provided with a battery compartment handling hole 23, which is used to pass through handling fixtures. Similarly, the battery compartment fixing member 22 with holes is similar to a container corner fitting, which allows forklifts and cranes used for handling containers to be used in the work of handling the modular energy storage device, thereby improving the efficiency of loading (ships, aircraft), unloading (ships, aircraft) and transportation of the modular energy storage device and reducing transportation costs.

[0043] Similarly, to minimize the footprint, in this embodiment, the bottom edge of the side of the battery compartment body 21 is recessed inward to form a battery compartment mounting recess, and the battery compartment fastener 22 is located in the battery compartment mounting recess. The battery compartment fastener 22 protrudes at most from the side of the battery compartment body 21, and the outer perimeter of the battery compartment assembly 2 is basically equal to the outer perimeter of the battery compartment body 21. The battery compartment fastener 22 does not significantly increase the footprint of the battery compartment body 21, and can directly replace existing ordinary industrial and commercial energy storage cabinets without requiring additional site space.

[0044] To ensure greater stability when the modular energy storage device is placed, the electrical compartment assembly 1 also includes a support member 14 and an outward protrusion 15 that are connected or integrally formed. The support member 14 is installed on the outer periphery of the bottom edge of the electrical compartment body 11, and a height difference A is formed between the bottom plate of the support member 14 and the bottom edge of the electrical compartment body 11. When there are slight undulations on the bottom surface or the bottom surface of the electrical compartment body 11 is not flat enough, as long as the value of the undulation or unevenness does not exceed A, it will not affect the stable placement of the electrical compartment assembly 1 on the bottom surface, making it safer to use.

[0045] The protruding portion 15 protrudes from the side of the electrical compartment body 11. When the electrical compartment body 11 tends to tip over, the protruding portion 15 can apply a supporting force to the electrical compartment body 11 from the side to prevent it from tipping over. The specific shape of the protruding portion 15 is not limited. In this embodiment, the longitudinal section of the protruding portion 15 is triangular, which can provide sufficient supporting force while saving processing materials, and can also minimize the space occupied and avoid collision or contact with surrounding objects.

[0046] Based on the above structure, the support member 14 is provided with an electrical compartment handling hole 13, which is used to pass through handling fixtures. Similarly, the support member 14 with holes is similar to a container corner fitting, so forklifts, cranes, etc. used for transporting containers can also be used to transport this modular energy storage device, improving the efficiency of loading (ships, aircraft), unloading (ships, aircraft), and transportation of the modular energy storage device, and reducing transportation costs.

[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. Modular energy storage device, characterized in that, include: The electrical compartment assembly (1) includes an electrical power transfer terminal and a power supply unit for connecting to external electrical equipment; as well as, The battery compartment assembly (2) is detachably connected to the top of the electrical compartment assembly (1). The battery compartment assembly (2) includes a power output terminal. The electrical compartment assembly (1) and the battery compartment assembly (2) are assembled to form an integral structure. The power output terminal is detachably connected to the power transfer terminal. The power supply unit can be connected to the energy storage unit inside the battery compartment assembly (2) through the power transfer terminal and the power output terminal.

2. The modular energy storage device of claim 1, wherein, The electrical compartment assembly (1) includes an electrical compartment body (11) and an electrical compartment fastener (12). The battery compartment assembly (2) includes a battery compartment body (21) and a battery compartment fastener (22). After the electrical compartment assembly (1) and the battery compartment assembly (2) are assembled, the electrical compartment fastener (12) and the battery compartment fastener (22) are locked together to form an integral structure.

3. The modular energy storage device of claim 2, wherein, The electrical compartment fixing component (12) is provided with an electrical compartment handling hole (13), which is used to pass through the handling fixture.

4. The modular energy storage device of claim 2, wherein, The top edge of the side of the electrical compartment body (11) is recessed inward to form an electrical compartment mounting recess. The electrical compartment fastener (12) is located in the electrical compartment mounting recess and protrudes from the side of the electrical compartment body (11) in most parts.

5. The modular energy storage device of claim 2, wherein, The battery compartment fixing member (22) is provided with a battery compartment transport hole (23), which is used to pass through the transport fixture.

6. The modular energy storage device of claim 2, wherein, The bottom edge of the side of the battery compartment body (21) is recessed inward to form a battery compartment mounting recess. The battery compartment fixing member (22) is located in the battery compartment mounting recess and the battery compartment fixing member (22) protrudes from the side of the battery compartment body (21) in most parts.

7. The modular energy storage device of any one of claims 2-6, wherein, The electrical compartment assembly (1) further includes a support member (14) connected to or integrally formed with an external protrusion (15). The support member (14) is installed on the outer periphery of the bottom edge of the electrical compartment body (11), and a height difference A is formed between the bottom plate of the support member (14) and the bottom edge of the electrical compartment body (11). The external protrusion (15) protrudes from the side of the electrical compartment body (11).

8. The modular energy storage device of claim 7, wherein, The support member (14) has an electrical compartment handling hole (13) for inserting handling fixtures.

9. The modular energy storage device of any one of claims 2-6, wherein, Along the horizontal direction, the cross-sectional dimensions of the electrical compartment body (11) are the same as those of the battery compartment body (21).

10. A modular energy storage device system, characterized by, It includes at least two modular energy storage devices as described in any one of claims 1 to 9, with two adjacent modular energy storage devices arranged side by side and / or back to back.

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