An energy storage device

Abstract

The utility model belongs to the technical field of energy storage equipment discloses energy storage device. The energy storage device's container and be used to store the energy storage body of electric energy, the container includes support and first support piece, wherein, first support piece is used to bear energy storage body, one of first support piece and support is equipped with the hooking part, the other is equipped with the hole for cooperation with the hooking part, first support piece fixed connection is established in the support. With this energy storage device can not only satisfy the basic requirement of support strength, should further install the convenience, to form the cost advantage. Specifically, through setting up the hooking part, and using the hooking part cooperation hole to realize the preposition of first support piece, not only preposition operation is simple and convenient, effectively reduces the assembly difficulty, reduces the assembly cost, and can further improve the consistency of assembly, ensures that the subsequent fixed connection operation is reliable and stable.

Description

Technical Field

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

[0002] As a key component of the modern energy system, energy storage devices exhibit diverse and highly integrated characteristics in terms of composition, function, and application scenarios.

[0003] Energy storage devices play multiple roles in power systems, primarily including participating in system frequency regulation, adjusting peak-to-valley differences in the power system, enhancing the absorption capacity of renewable energy, and ensuring uninterrupted power supply during system failures. Specifically, through charge and discharge control, energy storage devices can reduce active power imbalances or regional control deviations in the power system to a certain extent, thus participating in primary and secondary frequency regulation. Compared to traditional power sources, energy storage devices offer advantages such as fast response speed, high control precision, high operating efficiency, and bidirectional regulation. Energy storage devices can charge and store electrical energy during periods of low grid load and discharge it during peak load periods, thereby adjusting the peak-to-valley difference in the power system and improving load factor and the operating efficiency of power equipment. Energy storage devices can be matched with the capacity of wind and solar power generators, supporting rapid switching between charge and discharge states, ensuring the safety and stability of the grid-connected system, and enhancing the absorption capacity of renewable energy. When system failures occur, energy storage devices can provide uninterrupted power to many critical loads such as hospitals, fire fighting facilities, and communications systems, buying time for grid recovery and preventing further losses.

[0004] Currently, while meeting the requirements for high-power energy storage, special attention must be paid to the structural safety of energy storage devices. Although the internal load-bearing structure of energy storage devices can meet the basic requirements for support strength, the ease of assembly is not obvious, the assembly is difficult, and the cost advantage is not prominent. Utility Model Content

[0005] The purpose of this invention is to provide an energy storage device that not only meets the basic support strength requirements, but also further improves the convenience of installation, reduces assembly difficulty, and lowers costs.

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

[0007] An energy storage device includes a container and an energy storage body for storing electrical energy; the container includes a support frame.

[0008] The first support member is used to support the energy storage body. One of the first support member and the bracket is provided with a hooking part, and the other is provided with a hooking hole for cooperating with the hooking part. The first support member is fixedly connected to the bracket.

[0009] Beneficial effects:

[0010] In this application, the energy storage device not only meets the basic requirements for support strength but also further improves installation convenience and reduces assembly difficulty, thereby creating a cost advantage. Specifically, by setting up a mounting part and using the mounting part in conjunction with the mounting holes to achieve the pre-positioning of the first support member, the pre-positioning process is not only simple and convenient, effectively reducing assembly difficulty and costs, but also further improving assembly consistency and ensuring that subsequent fixed connection operations are reliable and stable. Attached Figure Description

[0011] Figure 1 This is a partial structural schematic diagram of the energy storage device provided in this embodiment of the utility model;

[0012] Figure 2 yes Figure 1 A magnified view of a portion at point A;

[0013] Figure 3 This is a first-view structural schematic diagram of the first support member provided in an embodiment of the present utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the column provided in this embodiment of the utility model;

[0015] Figure 5 This is a second-view structural schematic diagram of the first support member provided in an embodiment of the present utility model;

[0016] Figure 6 This is a schematic diagram showing the relevant dimensions provided in the embodiment of this utility model.

[0017] In the picture:

[0018] 1. Bracket; 10. Column; 11. Hanging hole; 2. First support member; 21. Hanging part; 211. Extension section; 212. Connecting section; 22. First plate; 23. Second plate; 24. Through hole; 3. Threaded fastener; 4. Second support member. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] This embodiment relates to an energy storage device, which includes a container.

[0024] It should be noted that energy storage containers can store and release electrical energy by integrating battery packs, power conditioning systems (PCS), battery management systems (BMS), and energy management systems (EMS).

[0025] The core of the container lies in the charging and discharging process of the battery pack. 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 in the energy storage container. During the discharging phase, the battery pack in the energy storage container converts 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, achieving functions such as peak shaving and frequency regulation.

[0026] 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.

[0027] 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.

[0028] Please see the appendix Figure 1 -Appendix Figure 4 The energy storage device includes a container and an energy storage body. The container includes a support frame 1 and a first support member 2. The first support member 2 is used to support the energy storage body. One of the first support member 2 and the support frame 1 is provided with a hook part 21, and the other is provided with a hook hole 11 for cooperating with the hook part 21. The first support member 2 is fixedly connected to the support frame 1.

[0029] Specifically, the energy storage unit can be a battery pack or battery array. The support frame 1 includes multiple columns 10 and crossbeams. The columns 10 are arranged sequentially and connected to the crossbeams to form a cuboid frame structure. The columns 10 and crossbeams can be made of cubic steel pipes, which, while meeting cost requirements, also ensures sufficient support strength. The columns 10 are arranged laterally to form multiple sequentially arranged receiving compartments. Inside each receiving compartment, multiple first support members 2 are arranged longitudinally. Two opposing first support members 2 can support one energy storage unit. Therefore, multiple energy storage units can be inserted longitudinally within the same receiving compartment, thus forming a complete energy storage container.

[0030] Furthermore, a hooking part 21 is provided on the first support member 2, and a corresponding hanging hole 11 is provided on the column 10. During assembly, the assembler can first insert the first support member 2 into the receiving compartment and directly and stably hook the hooking part 21 onto the hanging hole 11 to achieve pre-positioning, and then fix the first support member 2 to the column 10.

[0031] In the existing assembly method, the assembler needs to hold the first support 2 and then complete the fixed connection between the first support 2 and the column 10. Since the existing operation lacks the pre-positioning of the first support 2 and the installation and positioning are done by lifting, on the one hand, more manual intervention is required during the installation process, which wastes manpower resources and increases assembly costs; on the other hand, this lifting action of the first support 2 can also easily cause the positioning reliability of the first support 2 relative to the column 10 to decrease and the stability to deteriorate. Therefore, the quality of the fixed connection between the first support 2 and the column 10 will be affected.

[0032] When using high-power energy storage containers, special attention should be paid to structural safety. The internal load-bearing structure should not only meet the basic requirements of support strength, but also be made easier to install and reduce assembly difficulty in order to achieve a cost advantage.

[0033] In this embodiment, by setting up the hook part 21 and using the hook part 21 in conjunction with the hook hole 11 to achieve the pre-positioning of the first support member 2, the pre-positioning operation is not only simple and convenient, effectively reducing the assembly difficulty and assembly cost, but also further improving the consistency of assembly and ensuring the reliability and stability of subsequent fixed connection operations.

[0034] It should be noted that in some embodiments, the hanging part 21 can also be directly set on the bracket 1, and the hanging hole 11 can be adapted to be provided on the first support member 2. The specific structure can be adapted to achieve the technical effect of pre-positioning.

[0035] Optionally, the mounting part 21 includes an extension section 211 and a connecting section 212, one end of the connecting section 212 being connected to the first support member 2 or the bracket 1, and the other end of the connecting section 212 being connected to the extension section 211.

[0036] Specifically, the hook-on portion 21 is formed on the first support member 2, and the first support member 2 and the hook-on portion 21 can be an integral structure, formed on the first support member 2 by stamping. The integral structure eliminates the connection interface, allowing force to be transmitted along a continuous path, avoiding stress concentration caused by bolts or welding points and redundant assembly connections in the split structure. The integral structure is completed in one molding process, eliminating the need for subsequent assembly. The integral structure also avoids the accumulation of tolerances in the split connection, ensuring dimensional accuracy. Of course, provided that cost requirements are met, the hook-on portion 21 can also be fixed to the first support member 2 by welding or other connection methods. Furthermore, the extension section 211 and the connecting section 212 form a certain bending angle so that the integral hook-on portion 21 forms a hook-shaped structure.

[0037] Furthermore, the connecting section 212 is at least partially inserted through the hanging hole 11 and abuts against the inner wall surface of the hanging hole 11.

[0038] Specifically, before operation, the assembler first aligns the hook part 21 with the hook hole 11, then moves the first support member 2 toward the hook hole 11, and makes the extension section 211 pass through the hook hole 11 first. After the first support member 2 is in contact with the surface of the column 10, the first support member 2 is released, so that part of the structure of the connecting section 212 presses against the inner wall surface of the hook hole 11, thereby completing the pre-positioning of the first support member 2.

[0039] It should be noted that the connecting section 212 at least partially abuts against the inner wall surface of the hanging hole 11. Specifically, part of the structure of the connecting section 212 is in direct compression contact with the inner wall of the hanging hole 11, and the inner wall of the hanging hole 11 provides support for the connecting section 212.

[0040] In this embodiment, when the extension section 211 first enters the hanging hole 11, it can guide the connecting section 212 to accurately abut against the inner wall surface of the hanging hole 11, thereby playing a certain guiding role; in addition, when the connecting section 212 abuts against the inner wall surface of the hanging hole 11, the extension section 211 can prevent the hanging part 21 from detaching from the hanging hole 11 due to other factors, thereby improving the stability and safety of the pre-positioning.

[0041] It should be noted that in this embodiment, the hanging part 21 has a plate-like structure, and the inner wall of the hanging hole 11 is also a flat surface, that is, the hanging hole 11 is a square hole, and the two form a planar abutment fit structure. In other embodiments, the inner wall of the hanging hole 11 can also be a partially concave arc shape or a V-shaped groove. Correspondingly, the connecting section 212 can also be a partially convex arc shape or an outwardly convex V-shaped block. The above two have a certain guiding effect and centering effect on the connecting section 212, which is suitable for situations where the first support member 2 and the column 10 are precisely aligned in the lateral direction.

[0042] In this embodiment, the width of the hanging hole 11 is greater than the width of the extension section 211 and the connecting section 212 to ensure that the hanging part 21 and the hanging hole 11 can be smoothly connected.

[0043] Furthermore, the hook part 21 is L-shaped, with one end of the hook part 21 connected to the first support member 2, and the other end extending in the opposite direction of the support direction of the first support member 2.

[0044] Specifically, the extension 211 and the connecting section 212 of the hook part 21 are at right angles. The hook part 21 is disposed on the first support member 2 and is an inverted L-shaped structure with the opening facing downwards. Of course, it can be understood that when one end of the hook part 21 is connected to the bracket 1, the hook part 21 is an L-shaped structure with the opening facing upwards.

[0045] In this embodiment, the hanging part 21 forms an inverted L-shaped structure, which can provide further support after installation. Combined with the fixed connection between the first support member 2 and the column 10, it achieves a reinforcement effect.

[0046] It should be noted that the extension section 211 and the connecting section 212 of the hook part 21 can also form an obtuse angle relationship. This form of the hook part 21 makes it easier for the extension section 211 to pass through the hook hole 11, thereby making it easier for the assembler to hook the first support 2 onto the column 10 and improving the convenience of operation.

[0047] Please see the appendix Figure 3 and attached Figure 5 Optionally, the first support member 2 includes a first plate 22 and a second plate 23, which are connected at right angles, and the first plate 22 is attached to the bracket 1.

[0048] Specifically, the first support member 2 can be made of angle steel, and the first plate 22 and the second plate 23 are arranged at right angles. The hanging part 21 protrudes from the first plate 22, the first plate 22 is in contact with the surface of the column 10, and the entire large surface of the second plate 23 extends laterally, so that the energy storage body is completely pressed against the second plate 23, thereby forming a stable support effect for the energy storage body.

[0049] In this embodiment, an L-shaped support structure is formed by the right-angle connection between the first plate 22 and the second plate 23, which effectively disperses the vertical gravity load of the energy storage body. At the same time, the metal rigidity of the angle steel is used to make the first support member 2 form mechanical complementarity in both the horizontal and vertical dimensions.

[0050] Furthermore, the mounting part 21 is located on the first plate 22 and is close to the second plate 23.

[0051] Specifically, by positioning the mounting part 21 close to the second plate 23, the mounting part 21 can be placed closer to the connection point between the first plate 22 and the second plate 23. The first support member 2, through its right-angle structure, forms an optimized lever arm and bears the load, converting the bending moment generated by the weight of the energy storage body into compressive stress at the connection point, reducing the risk of localized stress concentration. Simultaneously, the proximity of the mounting part 21 to the connection point ensures that the connection node between the bracket 1 and the first support member 2 is close to the lower side, preventing the bracket 1 from experiencing slight displacement under vibration with the mounting part 21 as a fulcrum, thus guaranteeing the stable positional relationship of the first support member 2 relative to the bracket 1.

[0052] Furthermore, an arc transition connection can be provided between the hook part 21 and the first plate 22 to avoid stress concentration at the connection between the hook part 21 and the first plate 22 due to the large force on the hook part 21.

[0053] Furthermore, the first support member 2 is provided with multiple hanging parts 21, and multiple brackets 1 are respectively provided with hanging holes 11. The multiple hanging parts 21 of the same first support member 2 are respectively engaged with the multiple hanging holes 11.

[0054] In this embodiment, the entire bracket 1 has multiple columns 10. Along its extension direction, the same first support member 2 is provided with a hanging part 21 corresponding to the hanging hole 11 of the column 10. The multiple hanging parts 21 are correspondingly hung in the corresponding hanging hole 11.

[0055] In this embodiment, by providing multiple mounting parts 21 on the same first support member 2, the mounting parts 21 can share part of the support effect on the energy storage body, making it more secure. Moreover, through the cooperation of multiple mounting parts 21 and mounting holes 11, the weight of the energy storage body is evenly distributed among multiple support points, which can significantly reduce local stress peaks.

[0056] It should be noted that the number of hook parts 21 on the same first support member 2 can be less than the number of columns 10. After meeting the required support strength, some columns 10 can be left unprocessed without hook holes 11, thereby reducing the operation of assembly personnel to insert the hook parts 21 into the hook holes 11 and improving the assemblability.

[0057] Optionally, the hanging hole 11 is formed on the bracket 1, and the width of the hanging hole 11 is d (mm), and the surface width of the bracket 1 relative to the first support member 2 is D (mm), wherein 0.25≤d / D≤0.35.

[0058] Specifically, d / D represents the proportion of the hanging hole 11 on the surface of the support 1, i.e., the column 10. The hanging hole 11 is a hole feature that is directly opened on the surface of the column 10, which weakens the support strength of the column 10 itself. Therefore, d / D cannot be too large. If the proportion of the hanging hole 11 is too large, the area of ​​the hanging hole 11 will form a weak link on the entire column 10, and the bending strength will drop sharply at the hanging hole 11. In particular, the column 10 has multiple hanging holes 11 distributed at intervals along the entire longitudinal direction to cooperate with the hanging part 21 to form a structure that accommodates the energy storage body layer by layer. This causes the bending strength of the column 10 to fluctuate at various positions in the longitudinal direction. It is not only difficult to use in vibration environments, but also prone to fatigue of weak links and reduced lifespan in non-vibration environments. In addition, d / D cannot be small. If the proportion of the hanging hole 11 is too small, the width of the hanging part 21 also needs to be reduced accordingly. The width of the hanging part 21 is positively correlated with the support strength of the first support member 2. The hanging part 21 with too small a width is easy to bend under force, which greatly affects the stability and safety of the support.

[0059] In this embodiment, by limiting 0.25≤d / D≤0.35, the requirements for support strength can be met while also taking into account the impact on the structural strength of the column 10, thus ensuring the lifespan of the column 10 while also ensuring the stability and safety of the support.

[0060] Optionally, the first support member 2 is screwed onto the bracket 1.

[0061] Specifically, the first support member 2 is provided with a through hole 24, and the threaded fastener 3 passes through the through hole 24 and is screwed onto the bracket 1. After the assembler completes the pre-positioning by engaging the first support member 2 with the bracket 1, the first support member 2 is then reinforced onto the bracket 1 by the threaded fastener 3.

[0062] In this embodiment, the energy storage unit is further secured by threaded fasteners 3, which provide support for the overall weight of the energy storage unit. Threaded fasteners 3 can be standard parts, facilitating standardization and reducing costs. Threaded fasteners 3 support rapid assembly and disassembly; combined with automated tooling, they can shorten assembly time for individual components and improve production line efficiency. Furthermore, different models and specifications of threaded fasteners 3 can be selected based on variations in support strength. The support strength can even be adaptively adjusted by changing the number of threaded fasteners 3, ensuring economic efficiency while meeting support strength requirements.

[0063] Furthermore, the distance between the through hole 24 and the hanging hole 11 in the support direction of the first support member 2 is d1 (mm), and 95 (mm) ≤ d1 (mm) ≤ 100 (mm).

[0064] In this embodiment, the distance d1 between the through hole 24 and the hanging hole 11 cannot be too large. If d1 is too large, the through hole 24 will be located at the edge of the first support member 2, which will reduce the connection strength. However, if d1 is too small, the fixed connection part and the hanging part will be too close, and the force interference between them will be obvious during the support process, which will easily cause deformation of the first support member 2. At the same time, the connection operation may cause inconvenience. Therefore, this embodiment achieves a distance of 95 (mm) ≤ d1 (mm) ≤ 100 (mm), which can meet the connection strength requirements while ensuring the convenience of connection.

[0065] Please see the appendix Figure 6 Optionally, the distance between the engagement point of the hook-on part 21 and the hook hole 11 and one end of the bracket 1 in the width direction is h1, and the distance between the screw engagement point of the first support member 2 and the bracket 1 and the same end of the bracket 1 in the width direction is h2, where h1 = h2.

[0066] Specifically, when the hook-fitting part and the screw-fitting part are equidistant in the width direction, the hook-fitting part of the hook-fitting part 21 and the hook-fitting part of the hook hole 11 are in the same longitudinal direction as the screw-fitting part of the first support member 2 and the bracket 1. The first support member 2 and the bracket 1 form a force couple balance, effectively offsetting the tilting moment and preventing the structure from having a tendency to rotate.

[0067] It should be noted that when increased connection strength is required, multiple threaded fasteners 3 may be used for connection. When using multiple threaded fasteners 3, they should be symmetrical in the width direction relative to the column 10, and the hanging hole 11 should be centrally located to ensure that the first support member 2 and the bracket 1 form a force couple balance. For example, two threaded fasteners 3 are used to connect the first support member 2 and the bracket 1.

[0068] Optionally, the container also includes a second support member 4, which is connected to the bracket 1, and the first support member 2 abuts against the second support member 4.

[0069] Specifically, the second support member 4 can also be made of angle steel. One side plate of the second support member 4 abuts against the column 10 and is fixed to the column 10 by screws; the other side plate is used to assist in supporting the second plate 23, thereby further improving the support strength of the energy storage body and improving safety.

[0070] In this embodiment, the length of the second support member 4 is shorter than the length of the first support member 2. One second support member 4 can be installed on each corresponding column 10, or several columns 10 can be selected for installation as needed. The second support member 4 shares part of the weight load, reducing the stress on the connection between the hook-on part 21 and the hook hole 11 and the screw connection between the first support member 2 and the bracket 1, thus further improving safety.

[0071] 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, It includes a container and an energy storage unit for storing electrical energy, the container comprising: Frame (1); The first support member (2) is used to support the energy storage body. One of the first support member (2) and the bracket (1) is provided with a hook part (21), and the other is provided with a hook hole (11) for cooperating with the hook part (21). The first support member (2) is fixedly connected to the bracket (1).

2. The energy storage device according to claim 1, characterized in that, The mounting part (21) includes an extension section (211) and a connecting section (212). One end of the connecting section (212) is connected to the first support member (2) or the bracket (1), and the other end of the connecting section (212) is connected to the extension section (211).

3. The energy storage device according to claim 2, characterized in that, The connecting segment (212) is at least partially inserted through the hanging hole (11) and abuts against the inner wall surface of the hanging hole (11).

4. The energy storage device according to claim 3, characterized in that, The mounting part (21) has a plate-like structure.

5. The energy storage device according to claim 1, characterized in that, The hook part (21) is L-shaped, with one end connected to the first support member (2) and the other end extending in the opposite direction of the support direction of the first support member (2).

6. The energy storage device according to claim 5, characterized in that, The first support member (2) includes a first plate (22) and a second plate (23). The first plate (22) and the second plate (23) are connected at right angles. The first plate (22) is attached to the bracket (1), and the energy storage body abuts against the second plate (23).

7. The energy storage device according to claim 6, characterized in that, The mounting part (21) is located on the first plate (22) and close to the second plate (23).

8. The energy storage device according to claim 1, characterized in that, The first support member (2) is provided with a plurality of hooking parts (21), and the plurality of brackets (1) are respectively provided with hooking holes (11). The plurality of hooking parts (21) of the same first support member (2) are respectively hooked and engaged with the plurality of hooking holes (11).

9. The energy storage device according to claim 1, characterized in that, The mounting part (21) and the first support member (2) are an integral structure.

10. The energy storage device according to claim 1, characterized in that, The hanging hole (11) is opened on the bracket (1), and the width of the hanging hole (11) is d (mm). The surface width of the bracket (1) relative to the first support member (2) is D (mm), wherein 0.25≤d / D≤0.

35.

11. The energy storage device according to claim 1, characterized in that, The first support member (2) is screwed and fixed on the bracket (1).

12. The energy storage device according to claim 11, characterized in that, The first support member (2) is provided with a through hole (24), and a threaded fastener (3) passes through the through hole (24) and is screwed to the bracket (1).

13. The energy storage device according to claim 12, characterized in that, The distance between the through hole (24) and the hanging hole (11) in the support direction of the first support member (2) is d1 (mm), 95 (mm) ≤ d1 (mm) ≤ 100 (mm).

14. The energy storage device according to claim 11, characterized in that, The distance between the hook-fitting part (21) and the hook hole (11) and one end of the bracket (1) in the width direction is h1, and the distance between the screw-fitting part of the first support member (2) and the bracket (1) and the same end of the bracket (1) in the width direction is h2, where h1 = h2.

15. The energy storage device according to any one of claims 1-14, characterized in that, The container also includes a second support member (4), which is connected to the bracket (1), and the first support member (2) abuts against the second support member (4).

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