An energy storage system composed of 10-foot containers

Abstract

The utility provides a kind of energy storage system utilizing 10 feet container, belong to energy storage system technical field. Including energy storage container, switch board and multiple lap joint structure, energy storage container is 10 feet container, multiple energy storage containers are placed side by side, every two energy storage containers between can be detachably connected with lap joint structure, the leftmost or rightmost energy storage container is connected with switch board, lap joint structure is modular structure. The size of multiple energy storage containers is smaller, which can adapt to different road conditions, is more suitable for transportation, and through the cooperation of multiple energy storage containers, multiple lap joint structures and switch boards, the system structure of N+1 can be realized, that is, one energy storage container with switch board 1 plus N energy storage containers without switch board form a larger system, which is better adapted to different sites and use requirements, and can solve the technical problems of existing energy storage containers, such as heavy weight and large size, which are not convenient for transportation and on-site installation.

Description

Technical Field

[0001] This utility model relates to the field of energy storage systems, and in particular to an energy storage system using a 10-foot shipping container. Background Technology

[0002] Energy storage containers are mainly used to store and dispatch electrical energy. They charge when there is excess power generation and discharge when there is a shortage of power, thereby smoothing the output of unstable energy sources such as wind and solar power, helping the power grid to perform peak shaving and valley filling, and providing emergency backup power for factories, data centers and other places, thereby improving the stability of the power system and energy utilization efficiency.

[0003] Current energy storage containers generally use 20-foot containers and weigh around 40 tons. The container contains a PACK, fire protection system, liquid cooling system, high-voltage power distribution system, etc. The 20-foot energy storage container has a high degree of integration.

[0004] Chinese patent "A 20-foot Liquid-Cooled Energy Storage Container", publication number CN220222083U, publication date 2023.12.22, discloses a 20-foot liquid-cooled energy storage container, including a container body and container doors. It features a stacked foot stack structure for easy positioning and fixing on stacked foot stack blocks. The outer shell of the stacked foot stack is welded to the container body, facilitating stable placement. The inner bottom of the foot stack shell has a telescopic cylinder recess, allowing the positioning telescopic cylinder to be stably fixed above. When the positioning telescopic cylinder extends or retracts, it drives the insertion end post through the foot stack shell and fixes it in the positioning hole of the stacked foot stack block, effectively positioning and fixing the entire container. The power connection cable is connected to the container's intelligent switch panel, allowing for easy control and positioning via the intelligent switch panel.

[0005] The aforementioned patent has the following drawbacks: although the container is highly integrated, it is relatively heavy and large in size. It requires special approval for roads in many countries, is difficult to transport in countries with poor infrastructure, and has high requirements for the terrain and size of the project site, which greatly limits its use. Utility Model Content

[0006] This utility model provides an energy storage system utilizing a 10-foot shipping container, which solves the technical problems of existing energy storage containers being too heavy and large, making them inconvenient for transportation and on-site installation. The technical solution is as follows: This utility model embodiment provides an energy storage system composed of 10-foot containers, including: energy storage containers, power distribution cabinets and multiple overlapping structures, wherein the energy storage containers are all 10-foot containers; Multiple energy storage containers are placed side by side, and there is a detachable overlapping structure between each pair of energy storage containers. The leftmost or rightmost energy storage container is connected to the power distribution cabinet. The overlapping structure is a modular structure.

[0007] Optionally, the energy storage container includes a container body, a liquid chiller, multiple packs, and a high-pressure box. The container body is divided into two columns, left and right, and each column has a multi-layer structure. The liquid chiller is located on the top layer of the left column of the container body, the high-pressure box is located on the bottom layer of the right column of the container body, and the packs are located in other layers of the container body.

[0008] Optionally, the container body is provided with an explosion relief window, and the back of the container body is provided with an auxiliary air outlet and an exhaust air outlet from top to bottom, with an exhaust fan installed in the exhaust air outlet.

[0009] Optionally, the overlapping structure includes multiple assembly components, a left limiting piece, and a right limiting piece. The multiple assembly components are interlocked and connected, and the left limiting piece and the right limiting piece are respectively fitted onto the outside of the leftmost assembly component and the rightmost assembly component.

[0010] Optionally, the assembly includes a protective layer, an intermediate layer, and an inner liner layer. The intermediate layer is sleeved outside the inner liner layer, and the protective layer is sleeved outside the intermediate layer. The assembly is provided with a waterproof rivet nut.

[0011] Optionally, the intermediate layer is flush with the left and right ends of the inner lining layer.

[0012] Optionally, the protective layer and the intermediate layer are partially staggered, and the protective layer, the intermediate layer and the inner lining layer are all of equal length.

[0013] Optionally, both the protective layer and the inner lining layer are made of sheet metal, and the intermediate layer is made of silicone.

[0014] Optionally, the protective layer, intermediate layer, and inner lining layer are secured together by waterproof rivet nuts.

[0015] Optionally, the left limiting piece is sleeved on the outside of the middle layer, and the right limiting piece is sleeved on the outside of the protective layer.

[0016] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: Multiple energy storage containers are smaller in size, can adapt to different road conditions, are more suitable for transportation, and can achieve an N+1 system structure through the cooperation of multiple energy storage containers, multiple overlapping structures and power distribution cabinets. That is, one energy storage container with a power distribution cabinet plus N energy storage containers without power distribution cabinets form a larger system, which can better adapt to the needs of different sites and uses.

[0017] The energy storage container in this application is smaller and easier to transport than traditional energy storage containers. In addition, the compartment structure adopts a left-top corner compartment, while traditional energy storage containers generally use left-right compartments. Furthermore, the liquid cooler adopts a front-to-back airflow mode, which allows the energy storage containers to be arranged side by side more effectively.

[0018] Through the connection of the overlapping structure, cables and other equipment inside the energy storage container can be routed through the overlapping structure. This method of routing cables from the inside of the overlapping structure rather than underground can greatly save on the routing path and costs, and also eliminates the need to leave wiring positions in the foundation.

[0019] The combination of protective layer, intermediate layer and inner lining layer can achieve good waterproof and dustproof effect.

[0020] The staggered arrangement of the protective layer and the intermediate layer is used to assist in the splicing of multiple assembly components. Multiple assembly components can be spliced ​​according to actual needs, so that the overlapping structure can be spliced ​​to the corresponding length, which can better meet the on-site installation requirements.

[0021] The silicone in the middle layer serves a waterproof function, while the sheet metal in the protective layer and inner lining layer serves to compress the silicone sheet and provide corrosion protection. The protective layer and inner lining layer are clamped to the middle layer by screws to further improve the waterproof and dustproof effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the overall structure provided in this embodiment of the utility model; Figure 2 This is a three-dimensional structural schematic diagram of the energy storage container in an embodiment of this utility model; Figure 3 This is a three-dimensional structural diagram of the overlapping structure in an embodiment of this utility model; Figure 4 This is a cross-sectional schematic diagram of the overlapping structure in an embodiment of this utility model; Figure 5This is an embodiment of the present utility model. Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the assembly components in an embodiment of this utility model.

[0024] In the diagram: 1-Energy storage container; 2-Power distribution cabinet; 3-Overlapping structure; 11-Container body; 12-Liquid chiller; 13-Pack; 14-High voltage box; 15-Explosion relief window; 16-Auxiliary air outlet; 17-Exhaust fan; 31-Assembly component; 32-Left limit plate; 33-Right limit plate; 311-Protective layer; 312-Intermediate layer; 313-Inner lining layer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Figure 1 This is a three-dimensional structural diagram of the overall structure provided in this embodiment of the utility model; Figure 2 This is a three-dimensional structural schematic diagram of the energy storage container in an embodiment of this utility model; Figure 3 This is a three-dimensional structural diagram of the overlapping structure in an embodiment of this utility model; Figure 4 This is a cross-sectional schematic diagram of the overlapping structure in an embodiment of this utility model; Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the assembly components in an embodiment of this utility model. For example... Figures 1 to 5 As shown, this utility model embodiment provides an energy storage system composed of 10-foot shipping containers, aiming to solve the technical problems of existing energy storage containers, such as their heavy overall weight, large size, the need for special approval in many countries, difficulty in transportation in countries with poor infrastructure, and high requirements for the terrain size of project sites, resulting in significant limitations. It includes: multiple energy storage containers 1, a power distribution cabinet 2, and multiple overlapping structures 3, wherein each energy storage container 1 is a 10-foot container.

[0027] Among them, multiple energy storage containers 1 are placed side by side, and each pair of energy storage containers 1 can be detachably connected by an overlapping structure 3. The leftmost or rightmost energy storage container 1 is connected to the power distribution cabinet 2, and the overlapping structure 3 is a modular structure.

[0028] In this embodiment of the invention, multiple energy storage containers 1 are placed side by side. Specifically, after all or part of the multiple energy storage containers 1 are transported to their destination, they need to be placed side by side according to actual usage requirements. A detachable overlapping structure 3 connects every two energy storage containers 1. In practice, the inner side of the overlapping structure 3 is hollow, and wiring is carried within the overlapping structure 3. Using the overlapping structure 3 for wiring instead of underground wiring significantly reduces wiring path and costs, and eliminates the need to leave wiring positions in the foundation. The leftmost or rightmost energy storage container 1 is connected to the distribution cabinet 2. The distribution cabinet 2 is located to the left of the leftmost energy storage container 1 or to the right of the rightmost energy storage container 1; in other words, the distribution cabinet 2 is fixed to only one energy storage container 1. This arrangement better adapts to different usage needs, and its unique configuration allows for an N+1 system structure. This means a larger system can be formed by one energy storage container 1 with a power distribution cabinet 2 and N energy storage containers without power distribution cabinets 2. The overlapping structure 3 is modular. In practice, the distance between multiple energy storage containers 1 may change during installation; therefore, the modular design of the overlapping structure 3 better accommodates the distance between the containers, improving the adaptability of multiple energy storage containers 1, power distribution cabinets 2, and overlapping structures 3 to different installation environments. In short, during factory loading, multiple energy storage containers 1 can be separated and transported in batches, while the overlapping structure 3 and power distribution cabinets 2 are transported as accessories. Upon arrival at the project site, the multiple energy storage containers 1, power distribution cabinets 2, and overlapping structures 3 are then installed and connected. This method solves the current problems of heavy weight and large size of energy storage containers, which are inconvenient for transportation and subject to significant limitations at project sites. Furthermore, because multiple energy storage containers 1 are connected to the power distribution cabinet 2 simultaneously, a stable power supply is guaranteed.

[0029] Optionally, the energy storage container 1 includes a container body 11, a liquid cooler 12, multiple packs 13, and a high-pressure box 14. The inner side of the container body 11 is divided into left and right columns, each column having a multi-layer structure. Specifically, the container body 11 is divided into four clusters, with two clusters in each of the left and right columns, such as... Figure 1Below the liquid chillers 12 in the middle left column, four rows form a cluster, and above the high-voltage box 14 in the right column, four rows form a cluster. Each cluster contains four packs 13, which are connected in series. The four clusters are connected in parallel and simultaneously connected to the high-voltage box 14. The high-voltage box 14 is then connected to the power distribution cabinet 2 via the overlapping structure 3. The liquid chillers 12 are located on the top left layer of the container body 11. The purpose of this is to ensure heat dissipation while ensuring that the energy storage containers 1 arranged side by side do not interfere with each other by adopting a front-in, top-out airflow pattern. The high-voltage box 14 is located on the bottom right layer of the container body 11. The packs 13 are located in other layers of the container body 11. In this embodiment of the utility model, the packs 13 are placed in other layers except for the layers where the high-voltage box 14 and the liquid chiller 12 are located. Specifically, the structure of the energy storage container 1 itself can better adapt to the paralleling of multiple energy storage containers 1. In addition, the energy storage container 1 is also equipped with smoke detectors, temperature sensors, aerosol detectors, hydrogen detectors and carbon monoxide detectors, etc., and the energy storage container 1 contains complete liquid cooling pipes and electrical connections. The liquid cooler signal line, fire feedback line and the data and power lines of the high voltage box need to be connected to the power distribution cabinet 2 through the overlapping structure 3.

[0030] Optionally, the container body 11 is provided with an explosion relief window 15. The container body 11 has a main air outlet starting from the liquid chiller 12. The back of the container body 11 has auxiliary air outlets and exhaust vents from top to bottom. An exhaust fan 17 is installed in the exhaust vent. Exemplarily, in this embodiment of the present invention, the core purpose of providing the explosion relief window 15 is to protect the overall structure and internal equipment of the container body 11 and maximize the safety of surrounding personnel by controlling and directional pressure relief in extreme situations. The main air outlet corresponds to the exhaust of the liquid chiller 12. By exhausting air upwards, the impact of the exhaust of the liquid chiller 12 on the surrounding parallel energy storage containers 1 can be reduced. A dustproof net is provided at the auxiliary air outlet. The exhaust fan is used to drive air circulation and work with the liquid chiller 12 to dissipate heat inside the energy storage container 1.

[0031] Optionally, the overlapping structure 3 includes multiple assembly components 31, a left limiting piece 32, and a right limiting piece 33. The multiple assembly components 31 are interlocked with each other, and the left limiting piece 32 and the right limiting piece 33 are respectively fitted onto the outer sides of the leftmost assembly component 31 and the rightmost assembly component 31. Exemplarily, in this embodiment of the present invention, the multiple assembly components 31 can be assembled as needed. The multiple assembly components 31 are assembled by overlapping head and tail. The number of assembly components 31 can be adjusted according to the actual distance. The left limiting piece 32 and the right limiting piece 33 are located inside the two energy storage containers 1 and are respectively close to the two energy storage containers 1. The left limiting piece 32 and the right limiting piece 33 are fixed to the energy storage containers 1 by screws or waterproof rivets. The overlapping structure 3 allows the energy storage containers 1 to cope with different site terrain conditions. The overlapping structure provides a wiring channel, which can save costs and shorten the wiring path. Furthermore, it connects multiple energy storage containers 1 to the power distribution cabinet 2, thereby forming a larger system.

[0032] Optionally, the assembly 31 includes a protective layer 311, an intermediate layer 312, and an inner lining layer 313. The intermediate layer 312 is sleeved on the outside of the inner lining layer 313, and the protective layer 311 is sleeved on the outside of the intermediate layer 312. A waterproof rivet nut is provided on the assembly 31. Exemplarily, in this embodiment of the present invention, the inner lining layer 313 provides a stable channel for cable routing, the intermediate layer 312 serves a waterproof function, and the protective layer 311 serves to compress the intermediate layer 312 and provide corrosion protection. In addition, both the inner lining layer 313 and the protective layer 311 are rigid structures. Therefore, under the combined action of the inner lining layer 313 and the protective layer 311, they can resist a certain degree of external force, providing a relatively stable and safe environment for the cables inside the assembly 31. Furthermore, the intermediate layer 312 can also play a certain degree of buffering role when subjected to external impact. By pressing the protective layer 311 and the inner lining layer 313 together with the waterproof rivet nut, the intermediate layer 312 is further compressed, improving the waterproof capability.

[0033] Optionally, the left and right ends of the intermediate layer 312 and the inner liner 313 are flush. Exemplarily, in this embodiment of the invention, this length relationship indicates that the intermediate layer 312 can be supported by the inner liner 313 at any position. To ensure that multiple assembly components 31 can be smoothly joined end-to-end, the protective layer 311 and the intermediate layer 312 cannot completely overlap and need to be partially misaligned. The exposed portion of the intermediate layer 313 needs to be inserted into other assembly components 31. At this time, the inner liner 313 can provide stable support for the intermediate layer 312, thereby ensuring that the deformation of the intermediate layer 312 during insertion is within a controllable range, ensuring the waterproofness and stability of the joints of multiple assembly components 31.

[0034] Optionally, the protective layer 311 and the intermediate layer 312 are partially offset, and the lengths of the protective layer 311, the intermediate layer 312, and the inner liner 313 are all equal. For example, in this embodiment of the invention, the offset arrangement specifically means that one end of the intermediate layer 312 extends outside the protective layer 311, while the other end of the intermediate layer 312 is located inside the protective layer 311. This structure ensures that multiple assembly components 31 can be joined end-to-end. During installation, simply insert the exposed intermediate layer 312 into the tail of another assembly component 31. At this time, the tail of the other assembly component 31 only has the protective layer 311 and no intermediate layer 312 or inner liner 313. Therefore, inserting the intermediate layer 312 into the tail of another assembly component 31 will not cause interference. The equal lengths of the protective layer 311, the intermediate layer 312, and the inner liner 313 improve the accuracy of the joint of multiple assembly components 31 and reduce the likelihood of accumulated errors.

[0035] Optionally, both the protective layer 311 and the inner lining layer 313 are made of sheet metal, and the intermediate layer 312 is made of silicone. Exemplarily, in this embodiment of the invention, this multi-layer structure of sheet metal-silicone-sheet metal provides excellent waterproofing and shock absorption. The protective layer 311 effectively suppresses vibration and improves the stability of the cable within the overlapping structure 3. Furthermore, the silicone intermediate layer 312, with its good elasticity, effectively fills the gap between the protective layer 311 and the inner lining layer 313, further enhancing the waterproof and dustproof effect.

[0036] Optionally, the protective layer 311, the intermediate layer 312, and the inner lining layer 313 are fixed together by waterproof rivet nuts. Exemplarily, in this embodiment of the invention, the specific assembly involves first creating mounting holes in the assembly component 31 that penetrate the protective layer 311, the intermediate layer 312, and the inner lining layer 313 simultaneously. Then, a waterproof rivet nut is inserted into the mounting holes. Finally, a screw or other tool is used to rotate the waterproof rivet nut, causing a slight deformation of its outer surface, thus tightly adhering to the inner wall of the inner lining layer 313. Simultaneously, the head of the waterproof rivet nut adheres tightly to the outer wall of the protective layer 311. The head and the deformed portion of the waterproof rivet nut simultaneously compress the protective layer 311 and the inner lining layer 313. At this time, the intermediate layer 312 is also clamped accordingly. This ensures that the protective layer 311, the intermediate layer 312, and the inner lining layer 313 do not move relative to each other, and also improves the overall waterproofness.

[0037] Optionally, the left limiting piece 32 is fitted onto the outside of the intermediate layer 312, and the right limiting piece 33 is fitted onto the outside of the protective layer 311. Exemplarily, in this embodiment of the invention, to ensure waterproofing, a silicone rubber sheet is also provided on the outer surface of the protective layer 311 on the assembly 31 with the left limiting piece 32 and the right limiting piece 33. The silicone rubber sheet serves a waterproofing function. Since the left limiting piece 32 corresponds exactly to the head of the assembly 31, it can be directly fitted onto the outside of the intermediate layer 312. The right limiting piece 33 corresponds to the tail of the assembly 31, so it needs to be fitted onto the outside of the protective layer 311.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility belongs. The terms “first,” “second,” and similar terms used in this utility patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. “Above,” “below,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0039] The above description is only an optional embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy storage system utilizing a 10-foot shipping container, characterized in that, include: Multiple energy storage containers (1), power distribution cabinets (2) and multiple overlapping structures (3), wherein the energy storage containers (1) are all 10-foot containers; Multiple energy storage containers (1) are placed side by side, and an overlapping structure (3) can be detachably connected between each two energy storage containers (1). The leftmost or rightmost energy storage container (1) is connected to the power distribution cabinet (2). The overlapping structure (3) is a modular structure.

2. The energy storage system utilizing a 10-foot shipping container as described in claim 1, characterized in that, The energy storage container (1) includes a container body (11), a liquid chiller (12), multiple packs (13) and a high-pressure box (14). The inner side of the container body (11) is divided into two columns, left and right, and each column has a multi-layer structure. The liquid chiller (12) is located on the top layer of the left column of the container body (11), the high-pressure box (14) is located on the bottom layer of the right column of the container body (11), and the packs (13) are located in other layers of the container body (11).

3. The energy storage system utilizing a 10-foot shipping container as described in claim 2, characterized in that, The container body (11) is provided with an explosion relief window (15). The container body (11) has a main air outlet starting at the location corresponding to the liquid cooler (12). The back of the container body (11) is provided with an auxiliary air outlet and an exhaust outlet from top to bottom. An exhaust fan (17) is provided inside the exhaust outlet.

4. The energy storage system utilizing a 10-foot shipping container as described in claim 1, characterized in that, The overlapping structure (3) includes multiple assembly components (31), a left limiting piece (32) and a right limiting piece (33), the multiple assembly components (31) are engaged and connected to each other, and the left limiting piece (32) and the right limiting piece (33) are respectively fitted on the outside of the leftmost assembly component (31) and the rightmost assembly component (31).

5. An energy storage system utilizing a 10-foot shipping container as described in claim 4, characterized in that, The assembly component (31) includes a protective layer (311), an intermediate layer (312) and an inner liner (313). The intermediate layer (312) is sleeved on the outside of the inner liner (313), and the protective layer (311) is sleeved on the outside of the intermediate layer (312). The assembly component (31) is provided with a waterproof rivet nut.

6. The energy storage system utilizing a 10-foot shipping container as described in claim 5, characterized in that, The intermediate layer (312) is flush with the left and right ends of the inner lining layer (313).

7. An energy storage system utilizing a 10-foot shipping container as described in claim 5, characterized in that, The protective layer (311) and the intermediate layer (312) are partially staggered, and the protective layer (311), the intermediate layer (312) and the inner lining layer (313) are all of equal length.

8. An energy storage system utilizing a 10-foot shipping container as described in claim 5, characterized in that, The protective layer (311) and the inner lining layer (313) are both sheet metal, and the intermediate layer (312) is silicone.

9. An energy storage system utilizing a 10-foot shipping container as described in claim 7, characterized in that, The protective layer (311), intermediate layer (312) and inner lining layer (313) are fixed together by waterproof rivet nuts.

10. An energy storage system utilizing a 10-foot shipping container as described in claim 7, characterized in that, The left limiting piece (32) is sleeved on the outside of the middle layer (312), and the right limiting piece (33) is sleeved on the outside of the protective layer (311).

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