energy storage device

Abstract

The utility model relates to energy storage structure technical field especially relates to a kind of energy storage device.It includes container main body and battery pack, multiple columns are arranged in container main body, multiple columns are along the length direction interval arrangement of container main body, column is along the interval arrangement of multiple groups of limiting support groups in height extension direction, each limiting support group includes support part and limiting portion, and support part is below limiting portion, battery pack is supported by support part and located between support part and limiting portion, in the same limiting support group, limiting portion has the guide slope towards support part.Battery pack in entering container main body, the bottom surface of battery pack is contacted with support part and is supported by support part, battery pack is moved to the direction of side door away from container main body, to make battery pack slide in, since limiting portion has guide slope, the guide slope is set towards lower support part, so that battery pack is pushed into container main body in the process, guide slope can provide orientation and rectification for battery pack.

Description

Technical Field

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

[0002] The main body of an energy storage container consists of a container body and battery packs. Multiple battery packs are installed inside the container body. As the demand for the capacity of energy storage containers increases, the number of battery packs also increases. However, the increased number of battery packs leads to a decrease in the speed of battery pack installation within the container body. This is especially true when the battery packs are tilted relative to the container body, as the upper battery packs may collide with the lower battery packs and be hindered from being installed in place, further reducing the installation speed of the energy storage container body.

[0003] Therefore, there is an urgent need for an energy storage device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide an energy storage device that can accelerate the installation of battery packs into the box and improve installation efficiency.

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

[0006] An energy storage device is provided, including a container body and a battery pack. Multiple columns are disposed within the container body, spaced apart along the length of the container body. Multiple sets of limiting support groups are spaced apart along the height extension direction of the columns. Each limiting support group includes a support portion and a limiting portion, with the support portion located below the limiting portion. The battery pack is supported by the support portion and located between the support portion and the limiting portion. Within the same limiting support group, the limiting portion has a guide slope facing the support portion.

[0007] This utility model has at least the following beneficial effects:

[0008] During the process of the battery pack entering the container body, the bottom surface of the battery pack first contacts and is supported by the support, and the battery pack is pushed to move away from the side door of the container body so that the battery pack can slide in. Since the limiting part has a guide ramp, and the guide ramp is set towards the support of the same limiting support group, the guide ramp can guide and correct the battery pack during the process of pushing the battery pack into the container body, so as to avoid the battery pack tilting relative to the guide ramp, which would reduce the assembly speed and improve the assembly efficiency. In addition, the limiting part can limit the height of the battery pack, so as to prevent the battery pack located below from vibrating and hitting the battery pack located above when the energy storage device vibrates. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the energy storage device provided in the embodiment of this utility model;

[0011] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0012] Figure 3 for Figure 1 Enlarged view of a section at point B in the middle;

[0013] Figure 4 A schematic diagram of the first structure of the limiting part provided in an embodiment of this utility model;

[0014] Figure 5 A second structural schematic diagram of the limiting part provided in an embodiment of this utility model;

[0015] Figure 6 A schematic diagram of a third structure of the limiting part provided in an embodiment of this utility model;

[0016] Figure 7 A schematic diagram of a fourth structure of the limiting part provided in an embodiment of this utility model;

[0017] Figure 8 A schematic diagram of the fifth structure of the limiting part provided in the embodiment of this utility model;

[0018] Figure 9 A front view of the energy storage device provided in an embodiment of this utility model;

[0019] Figure 10 for Figure 9 Enlarged view of a section at point C.

[0020] In the picture:

[0021] 1. Container body; 11. Support column; 12. Base; 13. Top seat; 14. Reinforcing beam; 2. Battery pack; 21. Flanged edge; 22. Support plate; 3. Column; 4. Support part; 41. Support component; 42. Supporting component; 5. Limiting part; 51. Guide component; 511. Guide ramp; 52. Limiting component; 6. Baffle. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0026] This invention provides an energy storage device that can accelerate the packaging of batteries into the main body of a container.

[0027] Figure 1 A schematic diagram of the energy storage device provided in the embodiment of this utility model; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 for Figure 1 Enlarged view of section B in the middle.

[0028] like Figures 1 to 3As shown, the energy storage device includes a container body 1 and a battery pack 2. Multiple columns 3 are provided inside the container body 1. The multiple columns 3 are spaced apart along the length direction of the container body 1. Multiple sets of limiting support groups are spaced apart along the height extension direction of the columns 3. Each limiting support group includes a support part 4 and a limiting part 5. The support part 4 is located below the limiting part 5. The battery pack 2 is supported by the support part 4 and located between the support part 4 and the limiting part 5. In the same limiting support group, the limiting part 5 has a guide slope 511 facing the support part 4 below.

[0029] During the process of entering the container body 1, the bottom surface of the battery pack 2 first contacts the support part 4 and is supported by the support part 4, and pushes the battery pack 2 to move away from the side door of the container body 1 so that the battery pack 2 can slide in. Since the limiting part 5 has a guide slope 511, in the same limiting support group, the guide slope 511 is set towards the support part 4. In this way, during the process of pushing the battery pack 2 into the container body 1, the guide slope 511 can provide guidance for the battery pack 2 and correct its deviation, so as to avoid the battery pack 2 tilting relative to the guide slope 511, which would reduce the assembly speed and improve the assembly efficiency. In addition, the limiting part 5 can limit the height of the battery pack 2, so as to prevent the battery pack 2 located below from vibrating and hitting the battery pack 2 located above when the energy storage device vibrates.

[0030] It should be noted that each column 3 is equipped with multiple sets of limiting support groups. Between two adjacent columns 3, the limiting support groups on one column 3 correspond one-to-one with the limiting support groups on the other column 3. That is, the height of the limiting support group on one column 3 corresponds to the height of the limiting support group on the other column 3. The heights of the limiting support groups on the same column 3 are different, and the distance between adjacent limiting support groups on the same column 3 can be the same or different, depending on the height of the battery pack 2.

[0031] For example, in the same energy storage device, the support part 4 and the limiting part 5 in each set of limiting support are set at a preset distance.

[0032] For example, in order to facilitate the installation of the battery pack 2, the distance between adjacent limiting support groups on the same column 3 is the same, so as to satisfy the installation of the same battery pack 2 inside the container body 1, thereby improving the overall assembly efficiency of the energy storage device.

[0033] In some embodiments, multiple sets of limiting support groups are equally spaced on the column 3 along the height extension direction of the column 3.

[0034] That is, in adjacent limit support groups, the distance between the limit part 5 in the adjacent limit support group and the distance between the support part 4 in the adjacent limit support group are the same, so as to meet the installation requirements of battery pack 2 of the same size.

[0035] It is understandable that there are multiple support parts 4 and multiple limiting parts 5, with multiple support parts 4 spaced apart along the height direction of the column 3, and multiple limiting parts 5 spaced apart along the height direction of the column 3. That is, multiple support parts 4 and multiple limiting parts 5 are arranged alternately, with one support part 4 located at the bottom and one limiting part 5 located at the top. This can improve the installation efficiency of the battery pack 2 and facilitate the arrangement and installation of the battery pack 2.

[0036] Multiple support parts 4 are spaced apart along the height direction of the column 3, which enables multiple battery packs 2 to be installed inside the container body 1, and each battery pack 2 is corresponding to a limiting part 5 to ensure that each battery pack 2 can be limited.

[0037] Figure 4 This is a schematic diagram of a first structure of the limiting part provided in an embodiment of the present utility model. (See diagram below.) Figure 4 As shown, in some embodiments, the limiting part 5 includes a guide member 51, the side of the guide member 51 facing the battery pack 2 is a guide slope 511, and the angle between the guide slope 511 and the horizontal plane is A, wherein the angle of A ranges from 120° to 150°.

[0038] It should be understood that the angle of A can be selected as 120°, 125°, 130°, 135°, 140°, 145° or 150°, and is not specifically limited in this embodiment. When the angle of A is 120°, the battery pack 2 can be quickly installed below the limiting part 5, while when the angle of A is 150°, the battery pack 2 can be guided and corrected during the installation process.

[0039] It is understandable that the guide member 51 is inclined relative to the horizontal plane, and thus the bottom surface of the guide member 51 can be inclined relative to the horizontal plane, and the bottom surface of the guide member 51 is the guide slope 511.

[0040] Of course, in some other embodiments, the bottom surface of the guide 51 is an inclined surface, and the guide 51 as a whole is arranged parallel to the horizontal plane, and the inclined surface is the guide slope 511.

[0041] With the above scheme, the side of the guide member 51 facing the battery pack 2 is a guide slope 511. During the process of the battery pack 2 entering the container body 1, since the angle A between the guide slope 511 and the horizontal plane is 120° to 150°, it can tilt and correct the battery pack 2 during installation, so that the battery pack 2 can slide smoothly into the support part 4, avoid the battery pack 2 tilting relative to the guide slope, which would reduce the assembly speed and improve the installation efficiency of the battery pack 2. The side of the guide member 51 facing the battery pack 2 is a guide slope 511, which can guide the battery pack 2.

[0042] Figure 5A second structural schematic diagram of the limiting part provided in an embodiment of this utility model; Figure 6 A schematic diagram of a third structure of the limiting part provided in an embodiment of this utility model; Figure 7 This is a schematic diagram of a fourth structure of the limiting part provided in an embodiment of the present utility model.

[0043] like Figures 5 to 7 As shown, in some other embodiments, the limiting part 5 includes a guide 51 and a limiting part 52. The limiting part 52 is arranged parallel to the support part 4, and the guide 51 is connected to at least one end of the limiting part 52 facing the side door of the container body 1.

[0044] It is understandable that the guide 51 can be set at one end of the limiting member 52 facing the side door, that is, the guide 51 is set on the side of the limiting member 52 facing the battery pack 2. Of course, the guide 51 can also be set at both ends of the limiting member 52.

[0045] The limiting component 52 can limit the battery pack 2 after it is subjected to vibration, preventing the battery pack 2 from vibrating and bumping and hitting the support part 4 above it, thus preventing damage to the battery pack 2 from impact. It can also facilitate the correction of the height position of the battery pack 2.

[0046] By placing the guide member 51 on one side of the limiting member 52, the overall material usage of the limiting part 5 can be reduced, thus lowering production costs. Furthermore, by providing guide members 51 at both ends of the limiting member 52, the installation of the limiting part 5 can be facilitated, improving installation efficiency.

[0047] For example, the guide member 51 and the limiting member 52 are an integral structure. That is, the guide member 51 and the limiting member 52 are formed simultaneously by machining, thereby improving the manufacturing efficiency of the limiting part 5. Of course, the guide member 51 and the limiting member 52 can also be welded into an integral structure, which can improve the installation efficiency of the limiting part 5 when it is installed on the column 3.

[0048] In other embodiments, the guide 51 and the limiting member 52 may be separate structures. During installation, the guide 51 and the limiting member 52 need to be positioned against each other, or the guide 51 and the limiting member 52 can be positioned at a predetermined distance during installation. The key is to ensure that the guide 51 provides guidance for the battery pack 2, while the limiting member 52 provides height limitation for the battery pack 2.

[0049] For example, the guide 51 and the limiting member 52 are fixed to the column 3 by welding, or the guide 51 and the limiting member 52 are fixed to the column 3 by fasteners.

[0050] like Figure 7 As shown, in some embodiments, the limiting part 5 is a U-shaped structural member, and the opening of the limiting part 5 is set facing the top of the container body 1.

[0051] It is understandable that the limiting part 5 is provided with a groove on the side facing the top of the container body 1, that is, the groove forms an opening for the limiting part 5. This arrangement can reduce the weight of the limiting part 5, thereby reducing the overall weight of the energy storage device. In addition, it can also reduce the manufacturing cost of the limiting part 5.

[0052] In addition, the limiting part 5 is U-shaped, which makes the limiting part 5 simple and easy to manufacture, while also enabling bidirectional correction, thereby improving installation efficiency.

[0053] It should be noted that a specific shape of the limiting part 5 is provided here, and any shape that can achieve the correction and guidance of the battery pack 2 is within the protection range.

[0054] Figure 8 This is a schematic diagram of the fifth structure of the limiting part provided in an embodiment of the present utility model. (See diagram below.) Figure 8 As shown, in some other embodiments, the bottom surface of the limiting part 5 is parallel to the horizontal plane, and there is an inclined surface between the bottom surface of the limiting part 5 and the vertical plane, which is the guide inclined surface 511.

[0055] like Figures 1 to 3 As shown, in some embodiments, the support part 4 is provided with a baffle 6, and the limiting part 5 is installed on the baffle 6.

[0056] Specifically, the baffle 6 is set on the side of the support 4 facing the column 3.

[0057] For example, the support part 4 includes a support member 41 and a support member 42. The support member 42 is fixedly connected to the column 3, while the support member 41 is fixedly connected to the support member 42. Specifically, the side of the support member 41 facing the column 3 is fixedly connected to the baffle 6.

[0058] For example, the support member 41 is connected to the column 3 by welding, or the support member 41 is fixedly connected to the column 3 by fasteners (such as fastening bolts).

[0059] For example, the support member 41 and the support member 42 are connected by welding, or the support member 41 and the support member 42 are fixedly connected by fasteners (such as fastening bolts).

[0060] For example, the support member 41 and the baffle 6 are integrally formed structures, and the support member 41 and the baffle 6 are simultaneously obtained by sheet metal stamping. For instance, after the support member 41 and the baffle 6 are connected, they form a vertical L-shaped structure. This L-shaped structure can be used to connect with the column 3 and also to support the battery pack 2. Of course, the support member 41 and the baffle 6 can also be separate structures, with the support member 41 and the baffle 6 welded together, or connected by fasteners.

[0061] Since the support part 4 is provided with a baffle 6 and the limiting part 5 is installed on the baffle 6, after the baffle 6 is fixedly installed on the limiting part 5, the baffle 6 is then fixed on the support part 4. This can improve assembly efficiency and realize the integration of parts.

[0062] When the support member 41 and the baffle 6 are integrally formed, during installation, the limiting part 5 only needs to be directly installed on the baffle 6, so that the support member 41 can be directly fixed on the top of the support member 42, thereby improving the installation efficiency of the support member 41, the baffle 6 and the support member 42.

[0063] In some embodiments, a single baffle 6 is provided with a plurality of limiting parts 5, and the limiting parts 5 located on the same baffle 6 have the same height.

[0064] It is understandable that the limiting parts 5 are arranged at intervals along the length extension direction of the support member 41 (i.e., the baffle 6), thereby reducing the volume of the limiting parts 5 and lowering the manufacturing cost of the limiting parts 5. The limiting parts 5 can be fixedly connected to the support member 41 by welding or gluing. Of course, in some other embodiments, the limiting parts can be connected to the baffle 6 by fasteners. The limiting parts 5 are all the same height, which can limit the battery pack 2 throughout the process of sliding into the container body 1, thereby increasing the speed at which the battery pack 2 enters the container body 1.

[0065] Figure 9 A front view of the energy storage device provided in an embodiment of this utility model; Figure 10 for Figure 9 Enlarged view of a section at point C.

[0066] like Figure 9 and Figure 10 As shown, in some embodiments, the battery pack 2 is provided with a fixed flange 21, and the distance h between the fixed flange 21 and the limiting part 5 is in the range of 3mm to 5mm.

[0067] The fixed flange 21 protrudes from the side wall of the battery pack 2, and the fixed flange 21 facilitates the connection of the battery pack 2 housing.

[0068] For example, the distance between the fixed flange 21 and the limiting part 5 can be 3mm, 4mm or 5mm, and is not specifically limited in this embodiment.

[0069] By limiting the height of the fixed flange 21 with the limiting part 5, the volume of the limiting part 5 can be reduced. A smaller volume of the limiting part 5 reduces the overall weight of the energy storage device and lowers the overall manufacturing cost. The distance between the fixed flange 21 and the limiting part 5 is 3mm. This 3mm distance reduces the height jump of the battery pack 2, preventing large vibrations that could affect its overall performance. A distance of 5mm between the fixed flange 21 and the limiting part 5 improves the installation efficiency of the battery pack 2 within the container body 1, thereby increasing the overall manufacturing efficiency of the energy storage device.

[0070] The above technical solution can provide a certain space for vibration and turbulence of the battery pack 2, allowing for displacement of the column 3 in the height direction during the vibration of the battery pack 2, while also serving to fix the battery pack 2.

[0071] like Figure 9 and Figure 10 As shown, in some embodiments, the distance L between the limiting part 5 and the side wall of the battery pack 2 is not less than 7 mm.

[0072] Specifically, the shortest distance between the side wall of the limiting part 5 away from the column 3 and the side wall of the battery pack 2 facing the limiting part 5 is not less than 7mm.

[0073] It should be noted that the fixed flange 21 is located between the side wall of the battery pack 2 and the limiting part 5. The minimum distance between the side wall of the battery pack 2 and the limiting part 5 is 7mm, which can provide a certain amount of space for the fixed flange 21 and facilitate the battery pack 2 to slide between two adjacent columns 3, thus ensuring the battery pack 2's storage space.

[0074] like Figure 9 and Figure 10 As shown, in some embodiments, a support plate 22 is provided at the bottom of the battery pack 2, and the support plate 22 is in contact with the support portion 4.

[0075] The support plate 22 is fixed to the bottom of the battery pack 2, and the support plate 22 is a U-shaped structure plate. The support part 4 supports the battery pack 2 through the support plate 22, and the support part 4 also reduces the contact area between the battery pack 2 and the support part 4, which facilitates the heat dissipation at the bottom of the battery pack 2.

[0076] Specifically, the support plate 22 is fixedly installed at the bottom of the battery pack 2 by fasteners. The support plate 22 is fixed on both sides of the battery pack 2, so that the part of the battery pack 2 without the support plate 22 is not blocked, thereby making it easier for the heat at the bottom of the battery pack 2 to dissipate and improving the heat dissipation efficiency of the battery pack 2.

[0077] In addition, the support plate 22 has a stamping radius, and the groove opening of the support plate 22 is set towards the battery pack 2. That is, the support plate 22 is bent towards the support member 42 to form a groove. In this way, the part of the support plate 22 bent towards the support member 42 can directly contact the support member 42, further reducing the contact area between the support plate 22 and the support member 42.

[0078] In addition, the groove of the support plate 22 facing the battery pack 2 can provide airflow for cooling the battery pack 2, thereby allowing the cooled airflow to enter the groove to cool the battery pack 2.

[0079] Furthermore, along the height extension direction of the column 3, the projection of the support plate 22 on the support part 4 and the projection of the limiting part 5 on the support part 4 do not overlap. This arrangement saves height space and also avoids interference between the limiting part 5 and the battery pack 2.

[0080] The above technical solution enables the support part 4 to fully support the support plate 22, thereby improving the stability of the battery pack 2. Furthermore, it prevents the support plate 22 from scraping against the battery pack 2 below, thus protecting the battery pack 2.

[0081] Continue to refer to Figure 1 The container body 1 includes support columns 11, a base 12, and a top seat 13, wherein the four corners of the base 12 and the four corners of the top seat 13 are fixedly connected by support columns 11. That is, there are four support columns 11, and the two ends of the support columns 11 are fixedly connected to the corners of the base 12 and the top seat 13, respectively. Both the base 12 and the top seat 13 are frame structures, covered with sheet metal parts to enclose them. Furthermore, sheet metal parts are also used to enclose the area bounded by the top seat 13, base 12, and support column 11 along the width of the top seat 13. Similarly, sheet metal parts are used between the top seat 13, base 12, and support column 11 along the width of the top seat 13 to enclose the area bounded by them. A reinforcing beam 14 is provided on the side of the column 3 facing away from the container door of the container body 1. High weathering steel plates can be used for the sheet metal parts, giving the container body 1 high strength, toughness, and resistance to brittle fracture.

[0082] The main frame is formed by connecting the top seat 13, the base 12, and the support column 11. This main frame is rectangular, which improves the structural strength of the container body 1 and reduces deformation and torsion. For example, both the base 12 and the top seat 13 include longitudinal and transverse bars, which are perpendicular to each other and fixedly connected. It should be noted that, depending on the specific load-bearing requirements of the container body 1, the transverse bars can be made of channel steel, C-shaped steel, etc., while the longitudinal bars can be made of H-shaped steel, I-beams, square tubing, flat tubing, etc.

[0083] Furthermore, 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 protection scope 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 which is determined by the scope of the appended claims.

Claims

1. An energy storage device, characterized in that, The container includes a container body (1) and a battery pack (2). The container body (1) is provided with a plurality of columns (3). The plurality of columns (3) are spaced apart along the length direction of the container body (1). The columns (3) are spaced apart along the height extension direction with a plurality of limiting support groups. Each limiting support group includes a support part (4) and a limiting part (5). The support part (4) is located below the limiting part (5). The battery pack (2) is supported by the support part (4) and located between the support part (4) and the limiting part (5). In the same limiting support group, the limiting part (5) has a guide slope (511) facing the support part (4).

2. The energy storage device according to claim 1, characterized in that, The limiting part (5) includes a guide (51), and the side of the guide (51) facing the battery pack (2) is the guide slope (511), wherein the angle between the guide slope (511) and the horizontal plane is A, and the angle of A ranges from 120° to 150°.

3. The energy storage device according to claim 2, characterized in that, The limiting part (5) further includes a limiting member (52), which is arranged parallel to the supporting part (4), and at least one end of the limiting member (52) facing the side door of the container body (1) is connected to the guide member (51).

4. The energy storage device according to any one of claims 1-3, characterized in that, The limiting part (5) is a U-shaped structural component, and the opening of the limiting part (5) is set facing the top of the container body (1).

5. The energy storage device according to any one of claims 1-3, characterized in that, The support part (4) is provided with a baffle (6), and the limiting part (5) is installed on the baffle (6).

6. The energy storage device according to claim 5, characterized in that, Along the length of the baffle (6), a plurality of limiting parts (5) are provided at intervals on the baffle (6), and the limiting parts (5) located on the same baffle (6) have the same height.

7. The energy storage device according to any one of claims 1-3, characterized in that, The battery pack (2) is provided with a fixed flange (21), and the distance h between the fixed flange (21) and the limiting part (5) is in the range of 3mm to 5mm; and / or, The distance L between the limiting part (5) and the side wall of the battery pack (2) is not less than 7mm.

8. The energy storage device according to any one of claims 1-3, characterized in that, A support plate (22) is provided at the bottom of the battery pack (2), and the support plate (22) contacts the support part (4) so ​​as to be supported by the support part (4).

9. The energy storage device according to claim 8, characterized in that, Along the height extension direction of the column (3), the projection of the support plate (22) on the support part (4) and the projection of the limiting part (5) on the support part (4) do not overlap.

10. The energy storage device according to any one of claims 1-3, characterized in that, Along the height extension direction of the column (3), multiple sets of limiting support groups are equally spaced on the column (3).

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