Energy storage container
Patent Information
- Application Number
- CN202522180204.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-15
AI Technical Summary
这种“超规”问题严重制约了其利用标准海运工具进行全球化运输的可行性，导致运输成本激增，限制了产品的市场竞争力与部署灵活性
采用本实用新型实施例所提供的储能集装箱，其通过对装配结构进行优化，在作为主体框架结构的主体方钢框架每一侧的开口处向内延伸一段预设距离并增设一圈截面积较小的内框架，通过内框架作为箱体的电池舱门、其他各侧面的侧板、支撑结构、以及加强筋的连接区域，使上述各侧面的箱体零部件在安装时可以相对于主体方钢框架进行内缩，避免箱体在整体加工完成后，上述箱体零部件的外轮廓超过箱体的八个顶点处的角件所界定出的标准尺寸范围，在保证生产工艺流程简易的同时，确保储能集装箱外形尺寸符合图纸公差要求，保证集装箱整体外形尺寸控制在20尺范围内，实现外形规格的严格控制，便于储能集装箱产品的海外运输。
Smart Images
Figure CN224908250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage equipment technology, and in particular to an energy storage container. Background Technology
[0002] Energy storage containers are a new type of energy storage device that highly integrates battery systems, energy conversion systems, temperature control systems, fire protection systems, and supporting electrical equipment within a standard shipping container. They offer advantages such as flexible deployment, convenient transportation, and ease of expansion and maintenance, and are widely used in renewable energy power plants, grid peak shaving, emergency power supplies, and industrial and commercial power generation.
[0003] In related technologies, energy storage containers are typically manufactured using welding processes to form a robust container structure. To meet operational and maintenance requirements, the container must have multiple doors with different functions. The battery compartment requires a large, openable door to facilitate the overall lifting and replacement of battery modules. Simultaneously, the internal electrical control compartment must be equipped with an independent fire suppression system for emergencies and integrate efficient liquid cooling units and complex cooling pipes to ensure battery thermal management. These critical subsystems also require dedicated access doors or passageways for routine inspection and maintenance.
[0004] However, due to the aforementioned complex internal structure, existing energy storage containers face a significant design challenge. To securely support heavy equipment such as fire suppression systems and liquid-cooled pipes, numerous structural supports and reinforcing ribs need to be welded to the inner walls of the container. Simultaneously, to ensure the structural strength and reliable opening and closing of large hatches, heavy door frames, complex locking mechanisms, and reinforced hinge systems are essential. These additional structural components inevitably increase the container's wall thickness and external dimensions. The direct consequence is that many energy storage containers labeled as "20 feet" often exceed the international standard tolerances for 20-foot standard containers in terms of actual dimensions (length, width, and height). This "oversized" issue severely restricts the feasibility of global transportation using standard maritime transport, leading to soaring transportation costs and limiting the product's market competitiveness and deployment flexibility. Utility Model Content
[0005] This utility model embodiment provides an energy storage container. By optimizing the assembly structure, it ensures a simple production process while guaranteeing that the container's dimensions meet the drawing tolerances, thus achieving strict control over its external specifications. The technical solution is as follows: This utility model embodiment provides an energy storage container, including: a container body and a battery compartment door. The box is rectangular and has corner pieces at each of its eight vertices. A main square steel frame is formed in the rectangular area enclosed by the four corner pieces on the same side of the box. The main square steel frame is fixedly connected to the four corner pieces at the end of that side to define the opening at that end. At a predetermined distance offset from the main square steel frame into the box along the direction of the opening, an inner frame with a cross-sectional area smaller than the main square steel frame is provided inside the box. The battery compartment door is openable and closable at the opening and connected to the inner frame. The battery compartment door is configured such that, in the closed state, its outer surface lies within a physical vertical plane formed by the four corner pieces at the side end.
[0006] Optionally, the preset distance is 50mm, and the inner frame is circumferentially fixedly connected to the main square steel frame by welding.
[0007] Optionally, on one side of the housing where the battery compartment door is located, a battery compartment fire door is also provided at the opening. The battery compartment fire door is composed of multiple door panels spliced together from top to bottom. The multiple door panels are welded to the main square steel frame, and at least one of the door panels is provided with an observation and operation port.
[0008] Optionally, the energy storage container also includes an electrical hatch, which is located on the side of the container body adjacent to the fire door of the battery compartment. The electrical hatch adopts an embedded door structure and is connected to the main square steel frame. A fire emergency stop box is installed on the inside of the electrical hatch.
[0009] Optionally, the energy storage container also includes a liquid-cooled unit hatch, which is bolted to the main square steel frame.
[0010] Optionally, the top of the box is provided with an outer top plate and an inner plate arranged in parallel at intervals. The outer side of the outer top plate is flat, and a reinforcing rod is provided between the outer top plate and the inner plate.
[0011] Optionally, the inner layer plate is provided with a plurality of embedded rivet nuts for connecting the fire-fighting equipment inside the box.
[0012] Optionally, a reinforcing plate for connecting the fire-fighting equipment inside the box is welded to the surface of the inner layer plate.
[0013] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: The energy storage container provided by this utility model optimizes the assembly structure by extending a predetermined distance inward from the opening on each side of the main square steel frame, which serves as the main frame structure, and adding an inner frame with a smaller cross-sectional area. The inner frame serves as the connection area for the battery compartment door, the side panels of other sides, the support structure, and the reinforcing ribs of the container. This allows the container components on each side to be recessed relative to the main square steel frame during installation, preventing the outer contour of the container components from exceeding the standard size range defined by the corner pieces at the eight vertices of the container after the overall container is manufactured. While ensuring a simple production process, this ensures that the external dimensions of the energy storage container meet the drawing tolerance requirements, and that the overall external dimensions of the container are controlled within 20 feet, achieving strict control over the external specifications and facilitating the overseas transportation of energy storage container products. Attached Figure Description
[0014] 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.
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the energy storage container provided in an embodiment of the present utility model; Figure 2 This is a front view structural schematic diagram of the energy storage container provided in this embodiment of the utility model; Figure 3 This is a top view of the energy storage container provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the left-side structure of the energy storage container provided in this embodiment of the utility model; Figure 5 This is a partial structural diagram of the energy storage container with the battery compartment door removed, provided in an embodiment of this utility model. Figure 6 yes Figure 5 A magnified schematic diagram of a local structure; Figure 7 This is a partial structural diagram of the energy storage container after the outer top plate has been removed, according to an embodiment of this utility model. Figure 8 yes Figure 7 A magnified schematic diagram of a local structure.
[0016] In the diagram: 1-Box body; 1a-Opening; 2-Battery compartment door; 3-Battery compartment fire door; 4-Electrical compartment door; 5-Liquid cooling unit door; 11-Corner fitting; 12-Main square steel frame; 13-Inner frame; 14-Outer top plate; 15-Inner plate; 16-Reinforcing rod; 31-Door body; 32-Observation and operation port; 151-Embedded rivet nut; 152-Reinforcing plate; m-Energy storage battery frame. Detailed Implementation
[0017] 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.
[0018] Figure 1 This is a three-dimensional structural schematic diagram of the energy storage container provided in an embodiment of the present utility model; Figure 2 This is a front view structural schematic diagram of the energy storage container provided in this embodiment of the utility model; Figure 3 This is a top view of the energy storage container provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the left-side structure of the energy storage container provided in this embodiment of the utility model; Figure 5 This is a partial structural diagram of the energy storage container with the battery compartment door removed, provided in an embodiment of this utility model. Figure 6 yes Figure 5 A magnified schematic diagram of a local structure; Figure 7 This is a partial structural diagram of the energy storage container after the outer top plate has been removed, according to an embodiment of this utility model. Figure 8 yes Figure 7 A magnified schematic diagram of a local structure. For example... Figures 1 to 8 As shown, this utility model embodiment provides an energy storage container, including: a container body 1 and a battery compartment door 2.
[0019] The box body 1 is rectangular with corner pieces 11 at each of its eight vertices. A main square steel frame 12 is formed within a rectangular area enclosed by the four corner pieces 11 on the same side of the box body 1. The main square steel frame 12 is fixedly connected to the four corner pieces 11 located at that end to define the opening 1a at that end. At a predetermined distance offset from the main square steel frame 12 along the opening direction into the box body 1, an inner frame 13 with a cross-sectional area smaller than that of the main square steel frame 12 is provided inside the box body 1.
[0020] The battery compartment door 2 is openable and closable at the opening 1a and connected to the inner frame 13. The battery compartment door 2 is configured such that, in the closed state, its outer surface lies within the physical vertical plane formed by the four corner pieces 11 at the end of this side.
[0021] In this embodiment of the invention, the welding and assembly process of the container remains unchanged during manufacturing, while the structural components that make up the main body's external structure are optimized. As the main frame of the container 1, a main square steel frame 12 is formed by welding square steel bars together in the length, width, and height directions to create a cuboid structure. Each of the eight faces of the cuboid defines a rectangular area with a central opening 1a, and corner pieces 11 are provided at eight fixed points to limit the maximum dimension of the container 1's outline. On the side of each rectangular area, along a direction perpendicular to the opening 1a, the physical vertical plane formed by the outer contours of the corner pieces 11 at the four vertices of that side serves as the limit area for controlling the external dimensions of the energy storage container. On each side of the enclosure 1, at a point 50mm offset inward from the main square steel frame 12 along the opening direction, an inner frame 13 with a smaller cross-sectional area than the main square steel frame 12 is welded to the inner side of the main square steel frame 12. This inner frame 13 serves as the welding position for the side wall panels of each side of the enclosure 1 and the battery compartment door 2 on the energy storage battery entry side. On the energy storage battery entry side, which is the side of the enclosure 1 with the largest area, the standard outer frame of the battery compartment door 2, which was originally directly welded to the outer frame of the enclosure, is now welded to the inner frame 13. The door of the battery compartment door 2 can be retracted inward from the enclosure 1 along the opening 1a direction. Correspondingly, the locking rod and other opening and closing structures on the battery compartment door 2 also retract inward simultaneously, ensuring that in the direction perpendicular to the opening 1a, the overall structure of the battery compartment door 2 does not exceed the physical vertical plane formed by the outer contours of the corner pieces 11 at the four corners of that side. On the other sides of the enclosure 1, depending on the actual welding requirements, the side plates on the other sides can also be selectively welded to the inner frame 13 and the main square steel frame 12. The inner frame 13 in the opening 1a on each side can also be used as the installation space for setting up reinforcing ribs or setting up a support structure for fire protection. This avoids the outer contour dimensions of the enclosure 1 after completion from exceeding the standard specifications without changing the original welding production process.
[0022] The energy storage container provided by this utility model optimizes the assembly structure by extending a predetermined distance inward from the opening 1a on each side of the main square steel frame 12, which serves as the main frame structure, and adding an inner frame 13 with a smaller cross-sectional area. The inner frame 13 serves as the connection area for the battery compartment door 2, the side panels, support structures, and reinforcing ribs of the container body 1. This allows the container components on each side to be recessed relative to the main square steel frame 12 during installation, preventing the outer contour of the container components from exceeding the standard size range defined by the corner pieces 11 at the eight vertices of the container body 1 after the overall processing is completed. While ensuring a simple production process, this ensures that the external dimensions of the energy storage container meet the drawing tolerance requirements, and that the overall external dimensions of the container are controlled within 20 feet, achieving strict control over the external specifications and facilitating the overseas transportation of energy storage container products.
[0023] For example, after the housing 1 is installed, multiple sets of energy storage battery racks m can be arranged inside it to support the energy storage battery modules placed from one side of the battery compartment door 2, forming a battery compartment inside the housing to accommodate the battery modules.
[0024] Optionally, on the side of the housing 1 where the battery compartment door 2 is located, a battery compartment fire door 3 is also provided at the opening 1a. The battery compartment fire door 3 is composed of multiple door panels 31 spliced together from top to bottom, and the multiple door panels 31 are welded to the main square steel frame 12. At least one door panel 31 is provided with an observation and operation port 32. Exemplarily, in this embodiment of the present invention, on the same edge of the housing 1 where the battery compartment door 2 is located, a battery compartment fire door 3 is also provided, connecting to the location of the fire control facilities inside the housing 1. Users can observe and operate the internal fire control facilities through the observation and operation port 32 on the battery compartment fire door 3, so as to start and stop the fire-fighting facilities installed in the housing when a thermal runaway accident alarm occurs, thereby preventing the accident from escalating. The battery compartment fire door 3 eliminates the traditional door structure that uses a locking bar to open. Instead, it uses multiple door panels 31 welded together in a top, middle and bottom arrangement to the inner side of the opening 1a of the main square steel frame 12. It does not open or close as a whole. Only one door panel 31 is provided with an observation and operation port 32 so that the user can observe and reach out to operate. This further ensures that the battery compartment fire door 3 does not exceed the physical vertical plane area formed by the four corner pieces 11 on this side.
[0025] Optionally, the energy storage container also includes an electrical door 4, which is located on the side of the container body 1 adjacent to the battery compartment fire door 3. The electrical door 4 adopts an embedded door structure and is connected to the main square steel frame 12. A fire emergency stop box is installed inside the electrical door 4. Exemplarily, in this embodiment of the present invention, on the other side of the container body 1 adjacent to the side where the battery compartment fire door 3 is located, an electrical door 4 with an embedded installation structure is correspondingly provided on the side of the opening 1a near the battery compartment fire door 3. During installation, it is integrally embedded in the gap formed between the main square steel frame 12 and the inner frame 13 on that side, and the door frame is fixedly connected to the main square steel frame 12 by welding. The electrical compartment door 4 and the battery compartment fire door 3 are connected to the same internal space inside the enclosure 1. The fire emergency stop box for the slot fire-fighting facilities is located inside the electrical compartment door 4. After it is properly closed, it can be observed and controlled through the observation and operation port 32 on the other side of the battery compartment fire door 3. At the same time, its embedded installation method can further ensure that the electrical compartment door 4 does not exceed the physical vertical plane area formed by the four corner pieces 11 on this side.
[0026] Optionally, the energy storage container also includes a liquid-cooled unit hatch 5, which is bolted to the main square steel frame 12. Exemplarily, in this embodiment of the invention, on the other side of the container 1 adjacent to the side where the battery compartment fire door 3 is located, a liquid-cooled unit hatch 5 with a mesh door structure is provided on the side of its opening 1a away from the battery compartment fire door 3. This eliminates the traditional locking rod opening method and achieves a detachable connection to the main square steel frame 12 by directly fixing it with bolts. The structure is simple and easy to disassemble, while further ensuring that the liquid-cooled unit hatch 5 does not exceed the physical vertical plane area formed by the four corner pieces 11 on this side.
[0027] Optionally, the top of the container 1 is provided with an outer top plate 14 and an inner plate 15 arranged in parallel at intervals. The outer surface of the outer top plate 14 is flat, and a reinforcing rod 16 is provided between the outer top plate 14 and the inner plate 15. Exemplarily, in this embodiment of the present invention, the top side plate structure located on the top surface of the container 1 adopts a double-layer plate structure composed of the outer top plate 14 and the inner plate 15. Multiple reinforcing rods 16 are provided at intervals between the outer top plate 14 and the inner plate 15 to reinforce the overall mechanical strength and ensure structural stability. As for the outer top plate 14 located on the top outer layer, the corrugated plate form of the conventional container top outer layer is changed to a flat plate structure to further ensure that the top structure of the container does not exceed the physical vertical plane area formed by the four corner pieces 11 on the top surface.
[0028] Optionally, the inner layer plate 15 is provided with a plurality of embedded rivet nuts 151 for connecting fire-fighting equipment inside the container 1. Exemplarily, in this embodiment of the invention, embedded rivet nuts 151 are provided at corresponding positions on the inner layer plate 15 near the interior of the container 1, providing bolted installation points for fire-fighting equipment originally mounted on the top of the energy storage container via supports or other structures, further reducing space occupation and avoiding exceeding size limits. Furthermore, reinforcing plates 152 for connecting fire-fighting equipment inside the container 1 are welded to the surface of the inner layer plate 15. Smoke and heat detectors of the fire-fighting system, such as aerosol, carbon monoxide, or hydrogen sensors, can be installed at the positions of these reinforcing plates 152, facilitating identification and subsequent disassembly and replacement.
[0029] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art described herein. The terms “first,” “second,” and similar terms used in this 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. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An energy storage container, characterized in that, include: Box body (1) and battery compartment door (2). The box (1) is a cuboid with corner pieces (11) at each of its eight vertices. A main square steel frame (12) is formed in the rectangular area enclosed by the four corner pieces (11) on the same side of the box (1). The main square steel frame (12) is fixedly connected to the four corner pieces (11) at the end of the side to define the opening (1a) at the end. At a predetermined distance offset from the main square steel frame (12) into the box (1) along the direction of the opening, an inner frame (13) with a cross-sectional area smaller than that of the main square steel frame (12) is provided inside the box (1). The battery compartment door (2) is openable and closable at the opening (1a) and connected to the inner frame (13). The battery compartment door (2) is configured such that, in the closed state, its outer surface lies within a physical vertical plane formed by the four corner pieces (11) at the end of the side.
2. The energy storage container according to claim 1, characterized in that, The preset distance is 50mm, and the inner frame (13) is circumferentially fixedly connected to the main square steel frame (12) by welding.
3. The energy storage container according to claim 1, characterized in that, On one side of the housing (1) where the battery compartment door (2) is located, a battery compartment fire door (3) is also provided at the opening (1a). The battery compartment fire door (3) is composed of multiple door panels (31) spliced together from top to bottom. The multiple door panels (31) are welded to the main square steel frame (12). At least one of the door panels (31) is provided with an observation and operation port (32).
4. The energy storage container according to claim 3, characterized in that, The energy storage container also includes an electrical door (4), which is located on the side of the container (1) adjacent to the battery compartment fire door (3). The electrical door (4) adopts an embedded door structure and is connected to the main square steel frame (12). A fire emergency stop box is installed inside the electrical door (4).
5. The energy storage container according to claim 1, characterized in that, The energy storage container also includes a liquid cooling unit hatch (5), which is bolted to the main square steel frame (12).
6. The energy storage container according to any one of claims 1 to 5, characterized in that, The top of the box (1) is provided with an outer top plate (14) and an inner plate (15) arranged in parallel intervals. The outer side of the outer top plate (14) is flat, and a reinforcing rod (16) is provided between the outer top plate (14) and the inner plate (15).
7. The energy storage container according to claim 6, characterized in that, The inner plate (15) is provided with a plurality of embedded rivet nuts (151) for connecting the fire-fighting equipment inside the box (1).
8. The energy storage container according to claim 6, characterized in that, The inner layer plate (15) has a reinforcing plate (152) welded on its surface for connecting the fire-fighting equipment inside the box (1).