Energy storage device and carrier assembly

Abstract

The application discloses an energy storage device and a bearing assembly, and belongs to the technical field of electrical equipment. The energy storage device comprises a cabinet body, a support, a bearing assembly and a battery module. The support is arranged in the cabinet body. The bearing assembly comprises a base, which is arranged on the support. The battery module is arranged on the base. The base is provided with a first matching part, the support is provided with a second matching part, one of the first matching part and the second matching part has a guide surface, the guide surface is used for guiding the other one, the first matching part and the second matching part are mutually inserted and matched, the base is used as a stacking carrier of the battery module, if there is a deviation in the relative position of the base and the cabinet body during the falling process of the base, the first matching part and the second matching part are mutually inserted and matched under the guidance of the guide surface, and the base is moved and corrected, so that the relative position error between the base and the cabinet body is reduced after the base falls to the support, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, specifically relating to an energy storage device and a supporting component. Background Technology

[0002] With the rapid development of the energy storage market, the requirements for the energy density of energy storage systems are becoming increasingly higher. In order to maximize space utilization, multiple battery modules are usually stacked on battery racks to achieve a compact and orderly layout.

[0003] During the assembly process, in order to facilitate the overall installation of battery modules into the energy storage cabinet, the battery rack is usually moved by a forklift. After the battery rack enters the energy storage cabinet, its relative position needs to be adjusted to prevent the battery rack from getting too close to one side wall of the energy storage cabinet. Due to the limited space of the energy storage cabinet, the adjustment of the forklift is relatively difficult and can easily affect the assembly efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an energy storage device that addresses the technical problem that limited space in the energy storage cabinet makes it difficult to adjust the position of the battery rack, which can easily affect assembly efficiency. Another purpose of this application is to provide a load-bearing component.

[0005] Technical solution: The energy storage device described in the embodiments of this application includes:

[0006] The cabinet includes supporting members, which are disposed within the cabinet.

[0007] A load-bearing component, the load-bearing component including a base, the base being disposed on the support member;

[0008] The battery module is mounted on the base;

[0009] The base is provided with a first mating part, and the support member is provided with a second mating part. One of the first mating part and the second mating part has a guide surface, which is used to guide the other so that the first mating part and the second mating part can be inserted and mated with each other.

[0010] In some embodiments, the first mating part has a groove, and the guide surfaces are respectively provided on both sides of the groove, and the inner wall surface of the groove is connected to the guide surfaces;

[0011] The second mating part includes a protrusion that can be inserted into the groove so that the first mating part and the second mating part can be inserted into each other.

[0012] In some embodiments, the second mating part further includes a support plate connected to both sides of the protrusion, and the protrusion and the support plate extend along a first direction;

[0013] The first mating part also has a sliding surface, which is connected to the side of the guide surface away from the groove, and the sliding surface abuts against the support plate.

[0014] In some embodiments, the energy storage device further includes a plurality of guiding components, which are distributed on both sides of the base and disposed on the support member;

[0015] The guiding assembly includes a first guide plate, and the distance between two opposing first guide plates increases in the direction away from the support.

[0016] In some embodiments, the guiding assembly further includes a second guide plate, the second guide plate being connected to the support member and the first guide plate respectively;

[0017] The base is provided with a plurality of rollers arranged at intervals along a first direction. The plurality of rollers are provided in multiple groups, and each group of rollers corresponds to a second guide plate and is supported on the second guide plate.

[0018] In some embodiments, the guide assembly further includes a third guide plate disposed at one end of the second guide plate along a first direction, and a portion of the third guide plate abuts against the side of the base opposite to the support member.

[0019] In some embodiments, a first limiting portion is provided at one end of the base near the third guide plate;

[0020] The support member is provided with a third mating part, which is distributed opposite to the first limiting part. The third mating part is provided with a limiting groove for the first limiting part to be inserted along the first direction.

[0021] In some embodiments, the energy storage device further includes a fixing part disposed at one end of the base away from the third guide plate, and the fixing part is detachably connected to the base and the support member respectively.

[0022] In some embodiments, the support assembly further includes a plurality of columns arranged around the periphery of the battery module, the columns being connected to the base, and the columns being provided with a second limiting portion;

[0023] The cabinet is provided with a third limiting part, which is located above the second limiting part along the height direction of the cabinet.

[0024] In some embodiments, the base is provided with a plurality of mounting slots, which are distributed on both sides of the first mating portion.

[0025] In some embodiments, the support member divides the interior of the cabinet into a first chamber and a second chamber distributed along the height direction of the cabinet, the first chamber being located above the second chamber, and the battery module and the load-bearing assembly being disposed in the first chamber or the second chamber.

[0026] Accordingly, the carrier component described in this application embodiment is used to be installed inside the cabinet of the energy storage device and to support the battery module. The carrier component includes a base, which is disposed inside the cabinet. The base is provided with a first mating part, which is used to insert and engage with a second mating part of the cabinet. One of the first mating part and the second mating part has a guide surface.

[0027] Beneficial effects: The energy storage device in this application uses a base as a stacking carrier for battery modules. During the lowering process, if there is a deviation between the base and the cabinet, the first mating part and the second mating part are inserted into each other under the guidance of the guide surface, and the base is moved to correct the deviation. This reduces the relative position error between the base and the cabinet after the base falls to the support, thereby reducing the number of times the position needs to be adjusted and improving assembly efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the energy storage device provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the structure of the carrier component provided in the embodiments of this application;

[0031] Figure 3 A schematic diagram of the structure of the first mating part and the second mating part provided in the embodiments of this application;

[0032] Figure 4 Another structural schematic diagram of the first mating part and the second mating part provided in the embodiments of this application;

[0033] Figure 5 Another structural schematic diagram of the first mating part and the second mating part provided in the embodiments of this application;

[0034] Figure 6 for Figure 1 A magnified view of a portion of point A in the middle;

[0035] Figure 7Rear view of the energy storage device provided in the embodiments of this application;

[0036] Figure 8 for Figure 7 A magnified view of a portion of point B in the middle;

[0037] Figure 9 A schematic diagram of the structure of the fixing part provided in the embodiment of this application;

[0038] Figure 10 This is a schematic diagram of the structure of the first limiting part provided in an embodiment of this application;

[0039] Figure 11 A schematic diagram of the structure of the third mating part provided in the embodiments of this application;

[0040] Figure 12 for Figure 7 A magnified view of a portion of point C in the middle;

[0041] Reference numerals: 1. Cabinet; 11. Support component; 111. Second mating part; 1111. Protrusion; 1112. Support plate; 112. Third mating part; 1120. Limiting groove; 12. Third limiting part; 14. First chamber; 15. Second chamber; 2. Bearing assembly; 21. Base; 210. Assembly groove; 211. First mating part; 2110. Groove; 2111. Guide surface; 2112. Sliding surface; 212. Roller; 213. First limiting part; 22. Column; 221. Second limiting part; 3. Battery module; 4. Guide assembly; 41. First guide plate; 42. Second guide plate; 421. First bending part; 422. Second bending part; 43. Third guide plate; 431. Third bending part; 432. Fourth bending part; 5. Fixing part. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise expressly specified.

[0044] It should also be noted that in the accompanying drawings of the embodiments of this application, the arrow marked X represents the first direction X, the arrow marked Y represents the second direction Y, and the arrow marked Z represents the third direction Z. The first direction X, the second direction Y, and the third direction Z are introduced to more clearly illustrate the structure and relative positional relationship of each component in the energy storage device. In practical applications, the first direction X, the second direction Y, and the third direction Z may change depending on the placement of the energy storage device.

[0045] As a prerequisite for the embodiments of this application, after the battery rack enters the energy storage cabinet, it needs to be positioned to ensure that the battery modules reach the predetermined positions for subsequent wiring and connection of other structures. Therefore, it is necessary to ensure that a predetermined space is left between the battery rack and each side wall of the energy storage cabinet to prevent the battery rack from being too close to a certain side wall, which would result in an insufficient distance between the battery modules and that side wall, thus hindering heat dissipation of the battery modules. Adjusting the battery rack requires moving it in the left-right and front-back directions of the cabinet. Due to the limited internal space of the energy storage cabinet, multi-directional movement increases the difficulty of adjustment, thereby affecting assembly efficiency.

[0046] Please combine them together Figure 1 , Figure 2 and Figure 3 The energy storage device of this embodiment includes a cabinet 1, a support assembly 2, and battery modules 3. The cabinet 1 has an opening for assembling the devices. The cabinet 1 includes a support member 11, which is disposed inside the cabinet 1 and parallel to the inner bottom surface of the cabinet 1. The support assembly 2 includes a base 21, which is disposed on the support member 11. The battery modules 3 are disposed on the base 21 and stacked along the height direction of the cabinet 1 to reduce the gaps between them.

[0047] The base 21 is provided with a first mating part 211, and the support member 11 is provided with a second mating part 111. One of the first mating part 211 and the second mating part 111 has a guide surface 2111, which is used to guide the other so that the first mating part 211 and the second mating part 111 can be inserted into each other. The insertion direction of the first mating part 211 and the second mating part 111 can be parallel to the vertical direction or the height direction of the cabinet 1.

[0048] The cabinet 1 has a first direction X and a second direction Y. The first direction X is perpendicular to the plane where the opening is located, and the second direction Y is perpendicular to the first direction X. Both are parallel to the upper surface of the support member 11. When the cabinet 1 is placed normally, a person faces the opening of the cabinet 1. The first direction X can be regarded as the front-back direction of the cabinet 1, and the second direction Y can be regarded as the left-right direction of the cabinet 1.

[0049] During assembly, the base 21 can be lifted and moved into the cabinet 1 using a forklift, and then the base 21 can be lowered. If there is an error in the relative position of the base 21 and the cabinet 1 in the second direction Y, the first mating part 211 and the second mating part 111 will first contact each other through the guide surface 2111. As the base 21 continues to move down, the first mating part 211 and the second mating part 111 move relative to each other under the guidance of the guide surface 2111, and drive the base 21 to correct its deviation. Finally, the relative position of the base 21 and the battery module 3 with the cabinet 1 in the second direction Y meets the requirements, reducing the number of times the base 21 needs to be adjusted in multiple directions and helping to improve assembly efficiency.

[0050] Please combine them together Figure 2 and Figure 3 In some embodiments, the first mating part 211 has a groove 2110, and guide surfaces 2111 are respectively provided on both sides of the groove 2110. The inner wall surface of the groove 2110 is connected to the guide surfaces 2111, and the distance between the two guide surfaces 2111 increases in the direction away from the groove 2110, that is, the guide surfaces 2111 are inclined. The second mating part 111 includes a protrusion 1111, which can be embedded in the groove 2110 so that the first mating part 211 and the second mating part 111 can be inserted and mated with each other.

[0051] In this embodiment, there are two first mating parts 211, which are respectively disposed at both ends of the base 21 along the first direction X. Each first mating part 211 is disposed at the middle position of the base 21 along the second direction Y. The second mating part 111 is disposed at the middle position of the support member 11 along the second direction Y. The groove 2110 is generally U-shaped, and the width of the groove 2110 is greater than the width of the protrusion 1111. The cross-sectional shape of the groove 2110 is adapted to the cross-sectional shape of the protrusion 1111. When the base 21 is lowered, if the protrusion 1111 abuts against the guide surface 2111 on one side, the first mating part 211 will move along the second direction Y while moving downward. The misalignment between the protrusion 1111 and the groove 2110 gradually decreases until the protrusion 1111 is smoothly inserted into the groove 2110, which is convenient and quick. The two opposing guide surfaces 2111 can guide the base 21 to the predetermined position regardless of which side it is biased towards.

[0052] Please combine them together Figure 4 and Figure 5 In other embodiments, the number of first mating parts 211 may be one or more, and the structure of the first mating part 211 may be interchanged with the structure of the second mating part 111. Alternatively, the protrusion 1111 may have a wedge-shaped surface that can fit against the guide surface 2111, allowing them to move perpendicular to the insertion direction when they interact with the guide surface 2111.

[0053] Please combine them together Figure 2 and Figure 3 In some embodiments, the second mating part 111 further includes a support plate 1112 connected to both sides of the protrusion 1111, and the protrusion 1111 and the support plate 1112 extend along the first direction X. The first mating part 211 also has a sliding surface 2112, which is disposed on the side of the guide surface 2111 away from the groove 2110 and connected to the guide surface 2111. The sliding surface 2112, the guide surface 2111 and the inner wall surface of the groove 2110 form a cross section similar to a "Z" shape. The first mating part 211 can be integrally formed by a sheet metal stamping process; the sliding surface 2112 abuts against the support plate 1112.

[0054] After the base 21 falls and the first mating part 211 and the second mating part 111 are inserted, the base 21 is pushed into the cabinet 1 along the first direction X until the base 21 is completely located in the cabinet 1. During the movement of the base 21 along the first direction X, the protrusion 1111 guides the first mating part 211 throughout its movement, allowing the base 21 to move while maintaining the position defined after the first mating part 211 and the second mating part 111 are inserted. The sliding surface 2112 moves along the support plate 1112, increasing the contact area between the first mating part 211 and the second mating part 111, which helps to reduce the shaking or tilting of the base 21, thereby improving the stability of the base 21's movement and making the sliding smooth. In some other embodiments, the first mating part 211 may also be configured to extend along the first direction X, and the length of the first mating part 211 is the same as the length of the second mating part 111.

[0055] Please refer to Figure 3 In some embodiments, a portion of the first mating part 211 is recessed into the base 21, and a groove 2110 is formed on the inner side of the recessed part. The solid part corresponding to the sliding surface 2112 is attached to the bottom surface of the base 21 to minimize the relative distance between the first mating part 211 and the base 21, thereby saving space in the height direction of the cabinet 1.

[0056] Please refer to Figure 6 In some embodiments, the energy storage device further includes a plurality of guide components 4, which are distributed on both sides of the base 21, and each guide component 4 is disposed on the support member 11. The guide component 4 includes a first guide plate 41 extending along a first direction X. The first guide plate 41 is inclined, and the distance between two opposing first guide plates 41 increases in the direction away from the support member 11. This distance is the distance between the two first guide plates 41 in a second direction Y.

[0057] When the base 21 moves downwards and its side comes into contact with the first guide plate 41, the base 21 moves downwards along the first guide plate 41, causing the base 21 to move in the second direction Y along the direction away from the first guide plate 41. This drives the first mating part 211 to move, reducing the positional error between it and the second mating part 111. In this way, the first guide plate 41 can perform the initial adjustment of the base 21, and the first mating part 211 and the second mating part 111 can perform the secondary adjustment of the base 21. This increases the coverage of the positional deviation of the base 21 and reduces the distance that the base 21 needs to be adjusted in a single operation, maintaining the stability of the base 21 and the battery module 3. It is understood that when the positional deviation between the base 21 and the cabinet 1 in the second direction Y is relatively small, the base 21 may not contact the first guide plate 41, and in this case, adjustment is mainly achieved by the first mating part 211 and the second mating part 111. Alternatively, after the base 21 is adjusted by the first guide plate 41, it may also drive the first mating part 211 to move to the position directly opposite the second mating part 111 without the need for secondary adjustment. In this way, with the cooperation of the first guide plate 41, different working conditions can be flexibly met.

[0058] Please refer to Figure 6 In some embodiments, the guide assembly 4 further includes a second guide plate 42 extending along a first direction X, the second guide plate 42 being connected to the support member 11 and the first guide plate 41 respectively. Specifically, the second guide plate 42 includes a first bend 421 and a second bend 422, the first bend 421 being fixed to the support member 11, and the second bend 422 extending along a third direction Z, such that the second guide plate 42 is L-shaped, the third direction Z intersecting both the first direction X and the second direction Y, and the first guide plate 41 being disposed on the side of the second bend 422 away from the support member 11.

[0059] The base 21 is provided with multiple rollers 212 arranged at intervals along the first direction X. Each roller 212 has an axis parallel to the second direction Y and can rotate around its own axis. Multiple sets of rollers 212 are provided, with each set corresponding to a second guide plate 42 and supported on it, i.e., the rollers 212 are supported on the first bend 421. When the base 21 rests on the support 11, the rollers 212 contact the second guide plate 42. As the base 21 moves into the cabinet 1, it drives the rollers 212 to roll forward along the second guide plate 42. This reduces the frictional resistance on the base 21 and minimizes its impact on the cabinet 1. This improves the stability of both the base 21 and the cabinet 1 and increases the moving speed of the base 21, allowing for quick adjustment and improved assembly efficiency. In addition, the second bending portion 422 is provided on the side of the base 21 along the second direction Y, which limits the maximum movable distance of the base 21 in the second direction Y and can play a protective role for the base 21.

[0060] Please combine them together Figure 7 and Figure 8 In some embodiments, the guide assembly 4 further includes a third guide plate 43, which is disposed at one end of the second guide plate 42 along the first direction X. A portion of the third guide plate 43 abuts against the side of the base 21 opposite to the support member 11. Specifically, the third guide plate 43 includes a third bend 431 and a fourth bend 432. The third bend 431 is connected to the first bend 421 and extends upward along the third direction Z. The fourth bend 432 is located above the base 21 and abuts against the base 21. The third guide plate 43 limits the amount of runout of the base 21 in the third direction Z, which is beneficial to stabilizing the structural stability and electrical safety of the battery module 3.

[0061] In this embodiment, the third guide plate 43 is also arranged opposite to the direction in which the base 21 moves into the cabinet 1. At this time, the third guide plate 43 also limits the maximum distance that the base 21 can move into the cabinet 1. Especially when the cabinet 1 has two openings arranged opposite to each other, it can prevent the base 21 from sliding out of the cabinet 1.

[0062] Please combine them together Figure 6 and Figure 8 In some embodiments, the first guide plate 41, the second guide plate 42, and the third guide plate 43 are integrally formed and can be processed using sheet metal bending technology, resulting in high structural strength and high processing efficiency. In other embodiments, the first guide plate 41, the second guide plate 42, and the third guide plate 43 can also be fixed by welding.

[0063] Please combine them together Figure 8 , Figure 10 and Figure 11 In some embodiments, a first limiting part 213 is provided at the end of the base 21 near the third guide plate 43, and the first limiting part 213 and the third guide plate 43 are located on the same side of the base 21. A third mating part 112 is provided on the support member 11, and the third mating part 112 and the first limiting part 213 are arranged opposite to each other, with the third mating part 112 located on the side of the first limiting part 213 away from the base 21. The third mating part 112 is provided with a limiting groove 1120 for the first limiting part 213 to be inserted along the first direction X. When the first limiting part 213 is inserted into the limiting groove 1120, the base 21 abuts against the third limiting part 12, which not only limits the stroke of the base 21, but also defines the relative position of the base 21 and the cabinet 1 in the first direction X.

[0064] Please combine them together Figure 6 and Figure 9In some embodiments, the energy storage device further includes a fixing part 5, which is located at the end of the base 21 away from the third guide plate 43. The fixing part 5 is detachably connected to the base 21 and the support member 11. The detachable connection structure can be a screw, bolt, pin, or clip, etc. In this embodiment, a screw is used for connection. The fixing part 5 has a slotted hole for the screw to pass through, and both the base 21 and the support member 11 have pre-drilled screw holes for screw engagement. The fixing part 5 is L-shaped, with one end fixed to the base 21 by a screw and the other end fixed to the support member 11 by a screw, thus fixing the base 21 to the support member 11 and restricting its movement to improve the stability of the battery module 3 within the cabinet 1. When it is necessary to move and disassemble the base 21, the screws can be released, which is convenient and quick. Meanwhile, when the first limiting part 213 is inserted into the limiting groove 1120, the fourth bending part 432 of the third guide plate 43 is vertically aligned with the base 21, and the screw holes on the base 21 and the support member 11 also reach the relative position that can be connected with the fixing part 5, which provides convenience for the positioning and fixing of the base 21 and further improves the assembly efficiency of the device.

[0065] Please combine them together Figure 2 , Figure 7 and Figure 12 In some embodiments, the supporting component 2 further includes multiple columns 22 arranged around the outer periphery of the battery module 3. Each column 22 is connected to the base 21, and a second limiting part 221 is connected to the side wall of the column 22. A third limiting part 12 is provided inside the cabinet 1. The third limiting part 12 is located above the second limiting part 221 along the third direction Z, and there is a certain gap between the two. On the one hand, it can strengthen the limiting of the supporting component 2 in the height direction and limit the amount of jump of the supporting component 2. On the other hand, it can reduce the situation where the second limiting part 221 and the third limiting part 12 directly and rigidly squeeze each other.

[0066] In this embodiment, the multiple columns 22 are divided into two groups, with the two groups of columns 22 located on both sides of the base 21 along the second direction Y. The second limiting part 221 is disposed on one side of the two groups of columns 22 along the first direction X, and is on the same side as the first limiting part 213, so as to make full use of the space of the cabinet 1 in the first direction X. This ensures that the cabinet 1 has an unobstructed opening on the assembly side, and also limits the movement of the supporting component 2 on the path of being pushed into the cabinet 1, which is convenient and quick. When the first limiting part 213 is inserted into the limiting groove 1120, the third limiting part 12 is exactly opposite to the second limiting part 221.

[0067] Please combine them together Figure 1 and Figure 2In some embodiments, the base 21 is provided with a plurality of mounting slots 210 extending along the first direction X, and the plurality of mounting slots 210 are distributed on both sides of the first mating part 211. The mounting slots 210 are used to cooperate with the fork arms of the forklift to facilitate the movement of the base 21, and also reduce the weight of the base 21, which is beneficial to the lightweight design of the load-bearing component 2.

[0068] Please refer to Figure 1 In some embodiments, the support member 11 divides the interior of the cabinet 1 into a first chamber 14 and a second chamber 15 distributed along the height direction of the cabinet 1. The first chamber 14 is located above the second chamber 15. The battery module 3 and the support assembly 2 are simultaneously disposed in one of the first chamber 14 and the second chamber 15, while the other can be used to place at least one of the control module, the heat dissipation module, and the PCS module.

[0069] With both the battery module 3 and the support component 2 located in the first chamber 14, their positions are relatively high, facilitating centralized maintenance and repair; with both the battery module 3 and the support component 2 located in the second chamber 15, it helps to lower the center of gravity of the device and improve stability.

[0070] Accordingly, the present application provides a support component for being installed inside the cabinet 1 of the energy storage device and for supporting the battery module 3. The support component 2 includes a base 21, which is installed inside the cabinet 1. The base 21 is provided with a first mating part 211, which is used to be inserted and mated with a second mating part 111 of the cabinet 1. One of the first mating part 211 and the second mating part 111 has a guide surface 2111.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] The energy storage device and supporting components provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage device, characterized in that, include: The cabinet (1) includes a support member (11) disposed inside the cabinet (1); The support component (2) includes a base (21) disposed on the support member (11); A battery module (3) is disposed on the base (21); The base (21) is provided with a first mating part (211), and the support member (11) is provided with a second mating part (111). One of the first mating part (211) and the second mating part (111) has a guide surface (2111), which is used to guide the other so that the first mating part (211) and the second mating part (111) can be inserted into each other.

2. The energy storage device according to claim 1, characterized in that, The first mating part (211) has a groove (2110), and the guide surface (2111) is respectively provided on both sides of the groove (2110), and the inner wall surface of the groove (2110) is connected to the guide surface (2111). The second mating part (111) includes a protrusion (1111) that can be inserted into the groove (2110) so that the first mating part (211) and the second mating part (111) can be inserted into each other.

3. The energy storage device according to claim 2, characterized in that, The second mating part (111) further includes a support plate (1112) connected to both sides of the protrusion (1111), and the protrusion (1111) and the support plate (1112) extend along a first direction (X); The first mating part (211) also has a sliding surface (2112), which is connected to the side of the guide surface (2111) away from the groove (2110) and abuts against the support plate (1112).

4. The energy storage device according to any one of claims 1 to 3, characterized in that, The energy storage device also includes a plurality of guide components (4), which are distributed on both sides of the base (21) and mounted on the support member (11); The guide assembly (4) includes a first guide plate (41), and the distance between two opposing first guide plates (41) increases in the direction away from the support member (11).

5. The energy storage device according to claim 4, characterized in that, The guide assembly (4) further includes a second guide plate (42), which is connected to the support member (11) and the first guide plate (41) respectively; The base (21) is provided with a plurality of rollers (212) arranged at intervals along the first direction (X). The plurality of rollers (212) are provided in multiple groups. Each group of rollers (212) corresponds to a second guide plate (42) and is supported on the second guide plate (42).

6. The energy storage device according to claim 5, characterized in that, The guide assembly (4) further includes a third guide plate (43), which is disposed at one end of the second guide plate (42) along the first direction (X), and a portion of the third guide plate (43) abuts against the side of the base (21) away from the support member (11).

7. The energy storage device according to claim 6, characterized in that, The base (21) is provided with a first limiting part (213) at one end near the third guide plate (43); The support member (11) is provided with a third mating part (112), which is distributed opposite to the first limiting part (213). The third mating part (112) is provided with a limiting groove (1120) for the first limiting part (213) to be inserted along the first direction (X).

8. The energy storage device according to claim 6, characterized in that, The energy storage device also includes a fixing part (5), which is located at one end of the base (21) away from the third guide plate (43). The fixing part (5) is detachably connected to the base (21) and the support member (11).

9. The energy storage device according to claim 1, characterized in that, The supporting component (2) also includes a plurality of columns (22) arranged around the outer periphery of the battery module (3), the columns (22) being connected to the base (21), and the columns (22) being provided with a second limiting part (221); The cabinet (1) is provided with a third limiting part (12), which is located above the second limiting part (221) along the height direction of the cabinet (1).

10. The energy storage device according to claim 1, characterized in that, The base (21) is provided with a plurality of assembly slots (210), which are distributed on both sides of the first mating part (211).

11. The energy storage device according to claim 1, characterized in that, The support member (11) divides the interior of the cabinet (1) into a first chamber (14) and a second chamber (15) distributed along the height direction of the cabinet (1). The first chamber (14) is located above the second chamber (15). The battery module (3) and the load-bearing component (2) are disposed in the first chamber (14) or the second chamber (15).

12. A support assembly for being disposed within a cabinet (1) of an energy storage device and for supporting a battery module (3), characterized in that, The supporting component (2) includes a base (21) disposed inside the cabinet (1). The base (21) is provided with a first mating part (211), which is used to engage with a second mating part (111) of the cabinet (1). One of the first mating part (211) and the second mating part (111) has a guide surface (2111).

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