An energy storage device

Abstract

The utility model belongs to the technical field of energy storage system, disclose a kind of energy storage device. The energy storage device includes energy storage body, support assembly and frame body. Energy storage body is used to store electric energy, support assembly is used to carry energy storage body, support assembly includes two with the first support piece of detachable connection of energy storage body, two first support piece is respectively close to the both sides of energy storage body Setting, first support piece is formed protruding portion in the direction of being away from energy storage body Convexly set;Energy storage body is inserted in frame body, and protruding portion is in abutment with frame body. By the utility model, energy storage body is contacted extrusion with frame body by the protruding portion of first support piece, to avoid the bottom plate of energy storage body directly contact frame body, protect energy storage body, prolong service life, improve the reliability of overall energy storage device;By the replaceability of first support piece, maintenance cost can be significantly reduced;It can also reduce the possibility of debris generated by sliding friction between protruding portion and frame body, improve the reliability of overall energy storage device.

Description

Technical Field

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

[0002] In energy storage devices, the battery pack is typically installed by sliding it along a support structure until it reaches the preset installation position. This sliding installation method is widely used because it is relatively intuitive to operate, easy to align, and can complete the loading of the battery pack within a limited space.

[0003] However, in this existing installation method, sliding friction occurs between the battery pack's base plate and the supporting structure. During the insertion process, the battery pack's base plate directly contacts and slides relative to the surface of the supporting structure. Due to the battery pack's significant weight and the need to overcome initial resistance or make fine adjustments during installation, operators or equipment often need to apply considerable pushing force.

[0004] Currently, in energy storage devices, the presence of sliding friction during battery pack installation can easily lead to deformation or damage to the battery pack base plate, and even cause installation difficulties and safety hazards. Utility Model Content

[0005] The purpose of this utility model is to provide an energy storage device that can effectively protect the base plate during the installation of the energy storage body, prevent the base plate from being damaged by harmful friction, extend its service life, and improve the reliability of the overall system.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An energy storage device, comprising:

[0008] Energy storage unit, used to store electrical energy;

[0009] A support assembly for supporting the energy storage body, the support assembly including two first support members detachably connected to the energy storage body, the two first support members being respectively disposed close to both sides of the energy storage body, and the first support members protruding in a direction away from the energy storage body to form a protrusion;

[0010] The energy storage body is inserted into the frame, and the protrusion abuts against the frame.

[0011] Beneficial effects:

[0012] In this application, the energy storage unit contacts and presses against the frame through the protrusion of the first support member, avoiding direct contact between the base plate of the energy storage unit and the frame. When the assembly personnel insert the energy storage unit into the frame, sliding friction is formed between the protrusion and the frame, effectively solving the problem of base plate scratching and deformation damage during energy storage unit installation, protecting the energy storage unit, extending its service life, and improving the overall reliability of the energy storage device. Furthermore, since the protrusion is located on the first support member, which is detachably connected to the energy storage unit, if the protrusion is damaged and affects the installation operation of the energy storage unit, a new first support member can be directly replaced, avoiding deformation and damage to the base plate of the energy storage unit, significantly reducing maintenance difficulty and cost. Moreover, while meeting the support strength requirements for energy storage units of different weights, the size of the protrusion can be optimized to reduce the sliding contact area with the frame, thereby reducing the possibility of debris generation from sliding friction between the protrusion and the frame, and improving the overall reliability of the energy storage device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the energy storage device provided in an embodiment of the present invention;

[0014] Figure 2 This is a front view of the energy storage device provided in this embodiment of the utility model;

[0015] Figure 3 yes Figure 2 A magnified view of a portion at point A;

[0016] Figure 4 This is a side view of the energy storage device provided in an embodiment of the present invention;

[0017] Figure 5 This is a dimensional diagram provided by an embodiment of the present utility model.

[0018] In the picture:

[0019] 1. Energy storage unit;

[0020] 2. Support component; 20. First support member; 21. Protrusion; 211. First section; 212. Second section; 213. Third section; 22. Connector; 221. Connecting end;

[0021] 3. Frame; 31. Second support component; 311. Free end; 32. Main frame;

[0022] 4. Slots. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] This embodiment relates to an energy storage device. Energy storage devices are key infrastructure for large-scale electrical energy storage systems. Due to their advantages such as flexible deployment, high integration, and ease of transportation and maintenance, they are widely used in power grids, new energy sources, and backup power supplies. Energy storage devices typically consist of multiple independent battery packs (or battery modules), which are centrally installed and fixed to a supporting structure (such as a frame, guide rails, or slides) inside an energy storage container to form a complete energy storage unit. This energy storage device includes an energy storage container.

[0028] It should be noted that energy storage containers integrate battery packs, power conditioning systems (PCS), battery management systems (BMS), and energy management systems (EMS) to achieve the storage and release of electrical energy.

[0029] The core of an energy storage container lies in the charging and discharging process of its battery packs. During the charging phase, AC power from the grid or renewable energy sources (such as solar and wind power) is converted to DC power by a power storage inverter (PCS) and stored within the container. During the discharging phase, the battery packs in the container convert the DC power back to AC power via the PCS, supplying power to the load or injecting it into the grid. The energy management system (EMS) can optimize charging and discharging strategies based on grid demand, electricity price signals, or user settings, enabling peak shaving and frequency regulation.

[0030] The physical structure of high-power energy storage containers can be highly integrated, with battery cells primarily consisting of lithium-ion batteries. Using high-energy-density lithium-ion cells reduces the number of structural components, improves assembly efficiency, and enhances structural compactness. For example, standard containers can have capacities exceeding 5MWh and can be expanded to even higher capacities. Battery modules are stacked in layers, and fire-resistant partitions separate the battery compartment from the equipment compartment, ensuring safe and effective isolation.

[0031] High-power energy storage containers serve multiple functions in power systems. In grid service, they respond to grid dispatch commands, adjusting output power within 100ms to stabilize frequency (50Hz±0.1Hz) and voltage; as an independent power source, they quickly restore power to critical loads during grid failures; and they simulate synchronous generator characteristics to improve grid inertia and stability. In renewable energy support, they offset the intermittency of photovoltaic / wind power, ensuring a high proportion of renewable energy access and providing frequency and voltage support for weak grids or off-grid systems. For residential electricity consumption, they can automatically charge and discharge according to time-of-use pricing, reducing user electricity costs; seamlessly switch during power outages to ensure the operation of critical equipment; and form microgrids with distributed photovoltaic systems and diesel generators to achieve energy self-sufficiency.

[0032] Currently, energy storage devices are prone to base plate deformation during installation. The significant pushing force applied by operators and the frictional resistance between the base plate and the supporting structure are concentrated in the contact area. For thinner or relatively low-strength base plate materials (such as certain steel plates or composite materials), excessive friction and localized stress can cause bending, denting, or permanent plastic deformation. This not only affects the structural integrity of the battery pack itself but may also cause deformation of the internal battery cells and connecting structures due to compression. Furthermore, base plate damage is easily caused during installation. Continuous sliding friction can scratch, abrade, and even abrade the surface of the battery pack base plate. This not only damages the protective coating (such as the anti-corrosion layer), reducing its corrosion resistance, but in severe cases, it may even wear through the base plate material itself, causing structural damage. Rough surfaces of the supporting structure or the presence of foreign objects can also exacerbate this damage. Simultaneously, the installation of battery packs can also lead to difficulties and even safety hazards. Excessive friction not only increases the labor intensity of installers or the load on mechanical installation equipment, leading to low installation efficiency, but may also create operational safety hazards (such as slippage or falling) due to the need for forceful pushing and pulling. Deformed base plates may also cause the battery pack to get stuck on the support structure or fail to install properly, thus requiring a series of subsequent correction operations.

[0033] Please see the appendix Figure 1 -Appendix Figure 3 This energy storage device includes an energy storage body 1, a support assembly 2, and a frame 3. The energy storage body 1 is used to store electrical energy, and the support assembly 2 is used to support the energy storage body 1. The support assembly 2 specifically includes two first support members 20 that are detachably connected to the energy storage body 1. The two first support members 20 are respectively arranged close to both sides of the energy storage body 1, and the first support members 20 protrude in a direction away from the energy storage body 1 to form a protrusion 21. The energy storage body 1 is inserted into the frame 3, and the protrusion 21 abuts against the frame 3.

[0034] Specifically, the energy storage body 1 is a cuboid-shaped battery pack or battery array used to store electrical energy. The frame 3 is a cuboid frame structure, internally divided into multiple cuboid-shaped receiving compartments. The energy storage body 1 can be inserted sequentially into the receiving compartments of the frame 3 along its length, thereby achieving stable installation. A support assembly 2 is installed inside each receiving compartment. The support assembly 2 includes first support members 20 located on both sides near the width of the energy storage body 1 and connected to the bottom. The first support members 20 are provided with protrusions 21, which can be hollow or solid. Hollow structures can reduce weight and save costs, while solid structures enhance support strength and extend service life.

[0035] In this embodiment, the energy storage body 1 contacts and presses against the frame 3 through the protrusion 21 of the first support member 20, thus preventing the bottom plate of the energy storage body 1 from directly contacting the frame 3. This allows for sliding friction between the protrusion 21 and the frame 3 after the energy storage body 1 is inserted into the receiving compartment, effectively solving the problem of scratching and deformation of the bottom plate during installation. This prevents the internal battery cells or connecting structures of the energy storage body 1 from being compressed, thus protecting the energy storage body 1 and allowing for more flexible selection of the bottom plate material, extending its service life and improving the overall reliability of the energy storage device. Furthermore, since the protrusion 21 is located on the first support member 20, which is detachably connected to the energy storage body 1, if the protrusion 21 is damaged and affects the installation operation of the energy storage body 1, a new first support member 20 can be directly replaced, preventing deformation and damage to the bottom plate of the energy storage body 1 and significantly reducing maintenance difficulty and costs. Furthermore, given that the base plate of the energy storage body 1 contacts and presses against the frame 3, the sliding contact area between the base plate of the energy storage body 1 and the frame 3 should depend on the effective contact area between the frame 3 and the base plate of the energy storage body 1. However, to ensure sufficient support strength, the area of ​​the supporting structure on the frame 3 of the same specification cannot be changed. Therefore, the sliding friction area between the base plate of the energy storage body 1 and the frame 3 is large. In this embodiment, by setting a protrusion 21 to slide and press against the frame 3, while meeting the support strength requirements of energy storage bodies 1 of different weights, the sliding contact area between the protrusion 21 and the frame 3 can be reduced by optimizing the size of the protrusion 21. This reduces the labor intensity of installation personnel or the load on mechanical installation equipment, improves installation efficiency, reduces the possibility of debris generated by sliding friction between the protrusion 21 and the frame 3, and improves the overall reliability of the energy storage device. Optimizing the friction surface of the protrusion 21 improves the smoothness of the energy storage body 1 being installed into the frame 3, avoiding installation jamming or incomplete installation, and also avoiding subsequent correction operations.

[0036] It should be noted that the protrusion 21 abuts against the frame 3, specifically meaning that the protrusion 21 and the frame 3 are in direct compression contact.

[0037] Please see the appendix Figure 3 -Appendix Figure 5 Optionally, the height of the protrusion 21 is h1 (mm), and the length of the energy storage body 1 along the insertion direction is H (mm), where 0.036≤h1 / H≤0.038.

[0038] Generally, the larger the capacity of the energy storage unit 1, the more battery cells it contains, and the larger its overall volume, especially its length. The energy storage unit 1 is typically inserted into the frame 3 along its length. Therefore, the height of the protrusion 21 relative to the length of the energy storage unit 1 should not be too small. An excessively small protrusion 21 has limited supporting strength and is prone to deformation. If deformation occurs, it can cause jamming or severe wear during the insertion of the energy storage unit 1, affecting its installation and disassembly. Furthermore, the height of the protrusion 21 relative to the length of the energy storage unit 1 should not be too large. An excessively large protrusion 21 not only wastes materials and increases material costs, but also occupies more space in the frame 3 along its height, resulting in a larger overall volume of the energy storage device for the same number of energy storage units 1, which is detrimental to structural compactness.

[0039] In this embodiment, 0.036≤h1 / H≤0.038, the optimized height of the protrusion 21 of the energy storage body 1 of different sizes not only meets the support strength required by the energy storage body 1 under this specification, but also further ensures the structural compactness of the overall energy storage device.

[0040] Optionally, the protrusion 21 includes a first section 211 that abuts against the frame 3, the width of the first section 211 being B (mm), where 9.5 (mm) ≤ B (mm) ≤ 10.5 (mm).

[0041] Specifically, the protrusion 21 includes a first section 211 that abuts against the frame 3. The first section 211 has a planar plate-like structure, and its contact surface can be processed into a relatively smooth surface through surface treatment, thereby improving the smoothness of installation of the energy storage body 1 by the installer. The width B of the first section 211 is positively correlated with the support area. The larger the support area, the higher the support strength, stability, and safety of the support under the same conditions. However, an excessively large width B of the first section 211 also increases the sliding contact area with the frame 3 and increases the cost.

[0042] In this embodiment, by limiting 9.5 (mm) ≤ B (mm) ≤ 10.5 (mm), not only can the support strength requirement of the energy storage body 1 be met, but also an appropriate sliding contact area can be guaranteed, while reducing costs.

[0043] In other embodiments, the contact surface between the first segment 211 and the frame 3 can also be a wave-like structure, that is, an undulating wave-like structure is processed on the surface of the first segment 211, and a wave-like structure is also formed on the corresponding contact surface of the frame 3. During installation, the contact surfaces of the first segment 211 and the frame 3 are correspondingly embedded, thereby ensuring that the insertion of the energy storage body 1 utilizes the interlocking of the wave-like structure to form a guiding effect. When pushing in or pulling out the energy storage body 1, the energy storage body 1 will not shift or get stuck to either side, improving the smoothness of assembly and disassembly.

[0044] Those skilled in the art will understand that the direction of extension of each crest and trough of the wave-like structure should be consistent with the insertion direction of the energy storage body 1.

[0045] Furthermore, the protrusion 21 includes two second segments 212, one end of which is connected to both ends of the first segment 211, and the two second segments 212 are bent toward the same side of the first segment 211.

[0046] Specifically, the two second segments 212 are plates located on both sides of the first segment 211. The second segments 212 and the first segment 211 are set at an obtuse angle or a right angle so that the two second segments 212 are connected to the first segment 211 to form a U-shaped structure. The U-shaped structure can reduce the weight of the entire first support member 20 while meeting the support strength requirements, thereby reducing the cost.

[0047] Optionally, the junction of the second segment 212 and the first segment 211 is rounded.

[0048] After the energy storage body 1 is installed, the connection between the first section 211 and the second section 212 is subjected to continuous compressive stress. The second section 212 of the first section 211 is set at a certain angle. By forming a rounded corner at the connection, the stress concentration problem can be effectively alleviated and the service life can be improved.

[0049] Furthermore, the first support member 20 also includes two third segments 213, one end of which is connected to the other end of the two second segments 212 respectively, and the third segments 213 are connected to the energy storage body 1.

[0050] Specifically, the two third segments 213 are plate-like structures that are respectively connected to the other ends of the two second segments 212 and extend outward toward the groove of the U-shaped structure, fitting against the bottom plate of the energy storage body 1. Through holes can be opened on the third segments 213, and threaded fasteners are passed through the through holes and screwed onto the bottom plate of the energy storage body 1, thereby realizing that the first support member 20 can be detachably connected to the energy storage body 1, which is simple to install and has a stable connection.

[0051] Optionally, the connection between the third segment 213 and the second segment 212 is rounded.

[0052] After the energy storage body 1 is installed, the connection between the third section 213 and the second section 212 is subjected to continuous compressive stress. The third section 213 and the second section 212 are set at a certain angle. By forming a rounded corner at the connection, the stress concentration problem can be effectively alleviated and the service life can be improved.

[0053] In this embodiment, the entire first support member 20 is a one-piece plate, and the protrusion 21 can be formed by stamping. The one-piece structure can effectively reduce costs and the number of parts.

[0054] Optionally, the distance between the third segment 213 and the frame 3 in the direction of the compression action between the protrusion 21 and the frame 3 is h2 (mm), where 6.5 (mm) ≤ h2 (mm) ≤ 7 (mm).

[0055] Specifically, the direction of the compression between the protrusion 21 and the frame 3 is generally the longitudinal direction of the entire energy storage device. That is, in this longitudinal direction, the distance h2 between the third segment 213 and the frame 3 should not be too large. An excessively large h2 can easily result in an excessively large height of the protrusion 21, which not only wastes materials and increases material costs, but also occupies more space in the frame 3 in the height direction of the protrusion 21. As a result, the overall volume of the energy storage device will increase for the same number of energy storage bodies 1, which is not conducive to improving the compactness of the structure. Of course, h2 should not be too small either. An excessively small h2 can easily cause the head of the threaded fastener to be unable to be accommodated, thereby causing the threaded fastener to interfere with the frame 3 and affecting the installation of the energy storage body 1.

[0056] In this embodiment, the dimensions are limited to 6.5 (mm) ≤ h2 (mm) ≤ 7 (mm), which satisfies the economic requirements while ensuring smooth installation.

[0057] Optionally, the support assembly 2 also includes a connector 22, the two ends of which are connected to the two first support members 20 respectively, and the energy storage body 1 is connected to the connector 22.

[0058] Specifically, the connector 22 is a long straight plate, and the energy storage body 1 can be screwed to the connector 22. The connector 22 can provide an installation position for the connection of the first support member 20.

[0059] Furthermore, the edge of the connector 22 forms a connecting end 221, and a slot 4 is formed between the connecting end 221 and the energy storage body 1. At least a portion of one of the third segments 213 of the first support member 20 is inserted into the slot 4.

[0060] Specifically, one of the third segments 213 of the first support member 20 is inserted into the slot 4, and the other third segment 213 is threadedly connected to the energy storage body 1, thereby realizing the detachable connection between the first support member 20 and the energy storage body 1, that is, by inserting on one side and threading on the other side to facilitate the installation of the first support member 20.

[0061] Optionally, the frame 3 includes a main frame 32 and a second support member 31. One side of the second support member 31 is connected to the main frame 32, and the other side forms a free end 311. The protrusion 21 abuts against the second support member 31. The distance between the free end 311 and the protrusion 21 is h3 (mm), 12 (mm) ≤ h3 (mm) ≤ 14 (mm).

[0062] Specifically, the main frame 32 includes multiple columns and crossbeams. Second support members 31 are spaced longitudinally on the columns, forming multiple layers of accommodating space for installing the energy storage unit 1. The second support members 31 extend along the insertion direction of the energy storage unit 1, with protrusions 21 abutting against them. The second support members 31 transmit supporting force to the columns, thereby stably supporting the energy storage unit 1. One end of the second support member 31 is connected to the column, and the other end forms a free end 311.

[0063] In this embodiment, the distance h3 between the free end 311 and the protrusion 21 cannot be too large. An excessively large h3 increases the width and area of ​​the second support member 31, thereby increasing the material cost of the second support member 31. Of course, h3 also cannot be too small. An excessively small h3 will cause the protrusion 21 to be closer to the free end 311 located at the edge, resulting in greater stress at the connection between the second support member 31 and the column, which in turn increases the risk of deformation of the second support member 31 of the cantilever structure.

[0064] In this embodiment, the first support member 20 has a plurality of protrusions 21 arranged sequentially at intervals along the insertion direction of the energy storage body 1. Alternatively, the protrusions 21 extend from one end of the first support member 20 to the other end along the insertion direction of the energy storage body 1.

[0065] In this embodiment, those skilled in the art can flexibly adjust the distribution of the protrusions 21 along the insertion direction of the energy storage body 1 as needed, and this embodiment does not impose specific limitations.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An energy storage device, characterized in that, include: Energy storage unit (1), used to store electrical energy; Support component (2) for supporting the energy storage body (1), the support component (2) includes two first support members (20) detachably connected to the energy storage body (1), the two first support members (20) are respectively arranged close to the two sides of the energy storage body (1), and the first support members (20) protrude in the direction away from the energy storage body (1) to form a protrusion (21); The frame (3) is in which the energy storage body (1) is inserted and the protrusion (21) abuts against the frame (3).

2. The energy storage device according to claim 1, characterized in that, The height of the protrusion (21) is h1 (mm), and the length of the energy storage body (1) along the insertion direction is H (mm), 0.036≤h1 / H≤0.

038.

3. The energy storage device according to claim 1, characterized in that, The protrusion (21) includes a first section (211) that abuts against the frame (3), the width of the first section (211) being B (mm), 9.5 (mm) ≤ B (mm) ≤ 10.5 (mm).

4. The energy storage device according to claim 3, characterized in that, The protrusion (21) includes two second segments (212), one end of each second segment (212) is connected to both ends of the first segment (211), and the two second segments (212) are bent toward the same side of the first segment (211).

5. The energy storage device according to claim 4, characterized in that, The second segment (212) is set at an obtuse angle or a right angle with the first segment (211).

6. The energy storage device according to claim 4, characterized in that, The connection between the second segment (212) and the first segment (211) forms a rounded corner.

7. The energy storage device according to claim 4, characterized in that, The first support member (20) includes two third segments (213), one end of each third segment (213) is connected to the other end of each second segment (212), and the third segment (213) is detachably connected to the energy storage body (1).

8. The energy storage device according to claim 7, characterized in that, The connection between the third segment (213) and the second segment (212) forms a rounded corner.

9. The energy storage device according to claim 7, characterized in that, The distance between the third segment (213) and the frame (3) in the direction of the compression action between the protrusion (21) and the frame (3) is h2 (mm), 6.5 (mm) ≤ h2 (mm) ≤ 7 (mm).

10. The energy storage device according to claim 9, characterized in that, The support component (2) further includes a connector (22), the two ends of which are detachably connected to the two first support components (20) respectively, and the energy storage body (1) is connected to the connector (22).

11. The energy storage device according to claim 10, characterized in that, The edge of the connector (22) forms a connecting end (221), and a slot (4) is formed between the connecting end (221) and the energy storage body (1). At least a portion of one of the third segments (213) of the first support member (20) is inserted into the slot (4).

12. The energy storage device according to claim 1, characterized in that, The frame (3) includes a main frame (32) and a second support member (31). One side of the second support member (31) is connected to the main frame (32), and the other side forms a free end (311). The protrusion (21) abuts against the second support member (31). The distance between the free end (311) and the protrusion (21) is h3 (mm), 12 (mm) ≤ h3 (mm) ≤ 14 (mm).

13. The energy storage device according to any one of claims 1-12, characterized in that, The first support member (20) has a plurality of protrusions (21) arranged at intervals along the insertion direction of the energy storage body (1).

14. The energy storage device according to any one of claims 1-12, characterized in that, The protrusion (21) extends from one end of the first support (20) to the other end along the insertion direction of the energy storage body (1).

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