Energy storage device

Abstract

The utility model relates to the related technical field of batteries, and discloses an energy storage device, which comprises a cabinet body, an energy storage device and an energy storage device, the plurality of battery devices are arranged in the battery compartment, and each battery device comprises a box body and a plurality of battery monomers accommodated in the box body; the stand columns are connected to the top wall and the bottom wall of the cabinet body; the multiple brackets are connected to the stand columns in the height direction of the cabinet body, the battery devices are arranged between the two opposite brackets in a push-pull mode through the edge of the box body, each bracket comprises a first plate, a second plate and a limiting part which are sequentially connected, the first plates are used for carrying the battery devices, and the limiting parts are connected to the ends, away from the first plates, of the second plates; the battery device further comprises a supporting piece, the supporting piece is connected to the edge of the box body, and the limiting part is used for abutting against the supporting piece so as to limit the battery device to move in the height direction of the cabinet body. According to the invention, the stability of the battery device on the bracket can be improved while the assembly convenience of the battery device is improved, and the assembly efficiency of the energy storage device is improved.

Description

Technical Field

[0001] This application relates to the technical field of battery devices, and more particularly, to an energy storage device. Background Art

[0002] An energy storage device generally includes a cabinet body and a plurality of battery devices. The cabinet body has a battery compartment, and a plurality of brackets are arranged in the cabinet body. The battery devices are placed on the brackets, which facilitates the arrangement of the plurality of battery devices in the battery compartment, achieving high grouping efficiency and high energy density of the battery devices. Currently, since the operator can only operate outside the cabinet body, it is not convenient to reach into the battery compartment to assemble the battery device with the bracket, and the assembly stability of the battery device is not good. Summary of the Utility Model

[0003] The purpose of this application is to provide an energy storage device that can quickly assemble the battery device onto the bracket of the cabinet body, improve the assembly stability of the battery device, and enhance the assembly efficiency of the energy storage device.

[0004] This application provides an energy storage device, including: a cabinet body including a battery compartment; a plurality of battery devices arranged in the battery compartment, the battery device including a box body and a plurality of battery cells accommodated in the box body; a column connected to the top wall and the bottom wall of the cabinet body; a plurality of pairs of brackets sequentially connected to the column along the height direction of the cabinet body, each battery device is lapped on a pair of brackets through the edge of the box body, the bracket includes a first plate, a second plate and a limiting portion connected in sequence, the first plate is used to support the battery device, and the limiting portion is connected to one end of the second plate away from the first plate; wherein, the battery device further includes a support member, the support member is connected to the edge of the box body, and the limiting portion is used to press against the support member to limit the movement of the battery device along the height direction of the cabinet body.

[0005] The energy storage device according to the embodiment of this application includes a cabinet body with a battery compartment, a plurality of battery devices arranged in the cabinet body, a column, and a plurality of pairs of brackets connected to the column. The battery device includes a box body and a plurality of battery cells accommodated in the box body. Each battery device is lapped on a pair of brackets through the edge of the box body. The bracket includes a first plate, a second plate and a limiting portion connected in sequence. The first plate is used to support the battery device, and the limiting portion is connected to one end of the second plate away from the first plate. A support member is pre-set at the edge of the box body of the battery device, and the limiting portion is used to press against the support member to limit the movement of the battery device along the height direction of the cabinet body. Since the support member is arranged at the edge of the box body of the battery device, it is convenient for the production process of the battery device itself and is easy to manufacture. Thus, the operator can push the battery device into and position it on the bracket outside the cabinet body. While improving the assembly convenience of the battery device, the stability of the battery device on the bracket can be enhanced, and the assembly efficiency of the energy storage device can be improved.

[0006] In addition, the energy storage device according to this application may further have the following additional technical features:

[0007] In some embodiments, the box body includes a housing and a cover, the cover is fastened to the housing to form a closed chamber, and a plurality of battery cells are accommodated in the closed chamber. The support member is installed at the edge of the housing and / or the cover.

[0008] In the above technical solution, the support member is installed at the edge of the housing and / or the cover, which facilitates the production process of the battery device itself, and has a simple structure and is easy to manufacture.

[0009] In some embodiments, one end of the support member away from the limiting portion is embedded in the edge of the housing and / or the edge of the cover.

[0010] In the above technical solution, one end of the support member away from the limiting portion is embedded in the edge of the housing and / or the edge of the cover, which can reduce the overall height of the edge of the box body, and further reduce the height dimension of the bracket.

[0011] In some embodiments, the support member is a cylindrical structural member.

[0012] In the above technical solution, the support member can be a sleeve. The inside of the sleeve is hollow, with a light weight, and has sufficient structural strength and stiffness to meet the crimping requirements between the limiting portion and the support member. In addition, the sleeve is a commonly used component in the battery device, which can reduce the types of materials and facilitate material management.

[0013] In some embodiments, a fillet is provided at one end of the support member facing the limiting portion.

[0014] In the above technical solution, a fillet is provided at one end of the support member facing the limiting portion, which can avoid scratching when the support member contacts the limiting portion, reduce the friction between the two, and is beneficial to smoothly push the battery device into the bracket.

[0015] In some embodiments, a guiding portion is provided at the rear end of the limiting portion along the pushing direction of the battery device, and the guiding portion is inclined outward along the direction away from the first plate.

[0016] In the above technical solution, the guiding portion enlarges the entrance size of the bracket, which facilitates guiding the edge of the box body of the battery device to quickly enter the bracket and improves the assembly efficiency of the energy storage device.

[0017] In some embodiments, the energy storage device further includes a buffer member, and the buffer member is disposed between the limiting portion and the support member.

[0018] In the above technical solution, on the one hand, the buffer member can fill the gap generated between the limiting portion of the bracket and the support member due to manufacturing errors, installation errors, structural deformations, etc., increasing the pressing force between the battery device and the bracket in the height direction, so that the edge of the box body of the battery device is compacted by the limiting portion after being pushed into the bracket, improving the assembly stability of the battery device; on the other hand, it can also reduce the possibility of the edge of the box body of the battery device directly damaging the limiting portion, and improve the service life of the bracket.

[0019] In some embodiments, the thickness of the buffer member is greater than the gap between the limiting portion and the support member.

[0020] The above technical solution can further increase the pressing force between the edge of the box body of the battery device and the bracket in the height direction.

[0021] In some embodiments, the number of the limiting portions is multiple, and the multiple limiting portions are arranged at intervals on the second plate along the pushing direction of the battery device; the number of the support members is multiple, and the positions of the multiple support members correspond to the positions of the multiple limiting portions one by one. Along the pushing direction of the battery device, the distance between the multiple limiting portions and the first plate gradually decreases, and / or the surface of the edge of the box body connected to the support member is the first surface, and along the pushing direction of the battery device, the dimension of the multiple support members protruding from the first surface in the height direction gradually decreases.

[0022] The above technical solution is beneficial to smoothly push the edge of the box body of the battery device into the bracket, and at the same time, it is also convenient to pull the battery device out of the bracket for maintenance.

[0023] In some embodiments, along the pushing direction of the battery device, the gap between the multiple limiting portions and the first plate decreases arithmetically; and / or, along the pushing direction of the battery device, the dimension of the multiple support members protruding from the first surface in the height direction decreases arithmetically.

[0024] The above technical solution is beneficial to smoothly push or pull the edge of the box body of the battery device into or out of the track, reducing the possibility of the battery device being stuck during disassembly and assembly.

[0025] In some embodiments, a convex portion is provided on the side of the second plate facing the battery device.

[0026] In the above technical solution, the convex portion can reduce the gap between the edge of the box body of the battery device and the second plate of the bracket, increase the friction between the two, and reduce the possibility of the battery device shifting during disassembly and assembly.

[0027] In some embodiments, the convex portion is formed by stamping the second plate towards the battery device.

[0028] In the above technical solution, the convex portion can be formed by stamping the second plate, and the manufacturing process is simple, which is beneficial to realizing mass production.

[0029] In some embodiments, the number of the convex portions is plural, the plural convex portions are arranged at intervals along the pushing direction of the battery device, and along the pushing direction of the battery device, the dimensions of the plural convex portions protruding relative to the second plate gradually increase.

[0030] The above technical solution is beneficial to smoothly push the edge of the box body of the battery device into the bracket, and also facilitates pulling out the battery device from the bracket for maintenance.

[0031] In some embodiments, along the pushing direction of the battery device, the dimensions of the plural convex portions protruding relative to the second plate increase in an arithmetic progression.

[0032] The above technical solution is beneficial to smoothly push or pull out the edge of the box body of the battery device from the bracket, and reduces the possibility of the battery device being stuck during the disassembly and assembly process.

[0033] In some embodiments, a reinforcing portion is provided at the intersection of the second plate and the first plate.

[0034] The above technical solution, the reinforcing portion can improve the structural strength and rigidity of the bracket, and prevent the bracket from deforming.

[0035] In some embodiments, the reinforcing portion is recessed from the intersection of the second plate and the first plate toward the direction of the battery device.

[0036] The above technical solution, the reinforcing portion is formed at the intersection of the second plate and the first plate through a stamping process, and the manufacturing process is simple and suitable for mass production.

[0037] In some embodiments, a fixing portion is further provided at the rear end of the first plate along the pushing direction of the battery device, and the bracket is fixedly connected to the edge of the box body through the fixing portion.

[0038] The above technical solution, the fixing portion is arranged at one end of the bracket facing the outside of the cabinet body, which facilitates the operator to fixedly connect the edge of the box body of the battery device to the bracket outside the cabinet, and further improves the assembly stability of the battery device.

[0039] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0041] Figure 1 Schematic structural diagram of an energy storage device provided for some embodiments of the present application;

[0042] Figure 2 Assembly schematic diagram of a pair of brackets and a battery device provided for some embodiments of the present application;

[0043] Figure 3 Schematic structural diagram of a battery device provided for some embodiments of the present application;

[0044] Figure 4 Schematic structural diagram of a bracket provided for some embodiments of the present application;

[0045] Figure 5 For Figure 2 Schematic structural diagram seen in one direction;

[0046] Figure 6 For Figure 2 Schematic structural diagram seen in another direction;

[0047] Figure 7 For Figure 5 Cross-sectional view along direction A-A;

[0048] Figure 8 For Figure 7 Enlarged structural diagram of region C of

[0049] Figure 9 For Figure 6 Cross-sectional view along direction B-B;

[0050] Figure 10 For Figure 9 Enlarged structural diagram of region D of

[0051] Figure 11 Assembly schematic diagram of a cabinet body and a bracket provided for some embodiments of the present application.

[0052] The reference numerals in the specific embodiments are as follows:

[0053] 1000, energy storage device;

[0054] 1, cabinet body; 2, battery device; 3, support member; 31, rounded corner;

[0055] 10, frame; 101, column; 102, outer shell; 103, clamping portion;

[0056] 11, bracket;

[0057] 111a, first plate; 111b, second plate; 111c, convex portion; 111d, reinforcing portion;

[0058] 112. Limit part; 113. Guide part; 114. Fixing part;

[0059] 12. Buffer member;

[0060] 20. Battery cell; 21. Cover body; 22. Housing; 23. Edge of the box body; 231. Blind hole; 232. First surface;

[0061] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0062] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0064] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two unless otherwise specifically defined.

[0065] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0066] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0067] In the description of the embodiments of the present application, the term "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups), and "a plurality of pieces" means two or more pieces (including two pieces).

[0068] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0069] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0070] An energy storage device generally includes a cabinet body and a plurality of battery devices. The cabinet body includes a battery compartment. A plurality of brackets are arranged in the cabinet body, and the battery devices are arranged on the brackets so as to facilitate the arrangement of the plurality of battery devices in the battery compartment, achieving high grouping efficiency and high energy density of the battery devices. For a general energy storage device, a plurality of columns form the framework of the cabinet body. The brackets are usually connected to the columns within the framework of the cabinet body, and the battery devices are connected to the brackets. Since the operator can only operate outside the cabinet body and it is not convenient to reach into the battery compartment to assemble the battery devices with the brackets, the assembly stability of the battery devices is not good.

[0071] In view of this, the present application provides an energy storage device. By providing a limiting portion on the bracket and pre-setting a support member at the edge of the battery device box body, the limiting portion is used to press against the support member to limit the movement of the battery device in the height direction of the cabinet body. The operator can push the battery device onto the bracket and position it outside the cabinet body, which can improve the assembly convenience of the battery device while enhancing the assembly stability of the battery device on the bracket and improving the assembly efficiency of the energy storage device.

[0072] The energy storage device disclosed in the embodiments of the present application can be used in energy storage power stations, battery swapping stations, etc., and can also be applied to electrical devices to supply power to the electrical devices.

[0073] For convenience of description, in the following embodiments, the energy storage device 1000 provided by some embodiments of the present application is taken as an example for illustration.

[0074] Figure 1 It is a schematic structural diagram of an energy storage device provided by some embodiments of the present application. Figure 2 It is an assembly schematic diagram of a pair of brackets and a battery device provided by some embodiments of the present application. Figure 3 It is a schematic structural diagram of a battery device provided by some embodiments of the present application. Figure 4 It is a schematic structural diagram of a bracket provided by some embodiments of the present application. Refer to Figures 1 to 4 , embodiments of the present application provide an energy storage device 1000. The energy storage device 1000 includes one or more battery clusters to increase the voltage and capacity of the energy storage device 1000. The battery cluster may include a plurality of battery devices 2, and the plurality of battery devices 2 are connected in series through a busbar component to increase the voltage of the energy storage device 1000. When the energy storage device 1000 includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device 1000.

[0075] The energy storage device 1000 can be used in an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device 1000 can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods. The energy storage system provided by the embodiments of the present application can be any power system that requires an energy storage device.

[0076] In some embodiments, the energy storage device 1000 is an energy storage container or an energy storage cabinet.

[0077] In some embodiments, the energy storage device 1000 may include a cabinet 1 and one or more battery clusters, and the battery clusters are accommodated in the cabinet 1.

[0078] The battery device (Battery Apparatus) 2 mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, parallel, or in a hybrid connection through a busbar component.

[0079] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery cells 20.

[0080] In the embodiments of the present application, the battery cell 20 can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging to continue use.

[0081] The battery cell 20 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application do not limit this.

[0082] The battery cell 20 generally includes a housing, an electrode assembly, and electrode terminals. The electrode terminals are arranged on the housing, the electrode assembly is arranged inside the housing, and the electrode terminals are electrically connected to the tabs of the electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator is arranged between the negative electrode and the positive electrode. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and allow the active ions to pass through at the same time.

[0083] In some embodiments, the battery device 2 can be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0084] As an example, the battery cell assemblies can also be accommodated in the box body by directly fixing a plurality of battery cells 20 to the box body.

[0085] As an example, the box body can include a cover body 21 and a housing 22. The cover body 21 and the housing 22 are buckled together so that a closed space is formed inside the box body to accommodate the battery cell assemblies. Here, "closed" means covered or closed, which can be sealed or non-sealed.

[0086] As an example, the housing 22 can include a frame structure and a seat body connected to the frame structure. The frame structure and the seat body of the housing 22 can be an integrally formed structure or a split-assembled structure. The frame structure of the housing 22 is connected to the cover body 21 so that a closed chamber is formed inside the box body to accommodate the battery cell assemblies.

[0087] In some embodiments, the energy storage device 1000 can also include modules such as a thermal management module, a main control module, a total control module, a power distribution module, and a fire protection module.

[0088] As an example, the thermal management module can include a liquid cooling unit, and the liquid cooling unit provides coolant for adjusting the temperature of the battery cells to each battery device through pipelines.

[0089] As an example, the master control module can serve as the battery management unit of the battery cluster for monitoring and managing the battery cluster. The master control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charge and discharge current, voltage, etc. of the battery cluster. The master control module includes an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch, and other modules.

[0090] As an example, the total control module can serve as the battery management unit of the energy storage device for monitoring and managing the energy storage device. The total control module can monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage device. For example, it can control the charge and discharge current, voltage, etc. of the energy storage device. As an example, the total control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a main battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and a fiber optic conversion module, and other modules.

[0091] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., for detecting, alarming, or extinguishing fires in the energy storage system.

[0092] As an example, the power distribution device can be used to distribute power to the power consumption modules of the energy storage device.

[0093] Refer to Figures 1 to 4 , some embodiments of the present application provide an energy storage device 1000, including a cabinet 1, a plurality of battery devices 2, a support member 3, a column 101, and a plurality of pairs of brackets 11.

[0094] The cabinet 1 includes a battery compartment, and a plurality of battery devices 2 are arranged in the battery compartment. The battery device 2 includes a box body and a plurality of battery cells 20 accommodated in the box body.

[0095] The column 101 is connected to the top wall and the bottom wall of the cabinet 1, and a plurality of pairs of brackets 11 are sequentially connected to the column 101 along the height direction of the cabinet 1. Each battery device 2 is lapped between a pair of brackets 11 through the edge 23 of the box body.

[0096] The bracket 11 includes a first plate 111a, a second plate 111b, and a limiting portion 112 connected in sequence. The first plate 111a is used to support the battery device 2, and the limiting portion 112 is connected to one end of the second plate 111b away from the first plate 111a; wherein, the battery device 2 further includes a support member 3, and the support member 3 is connected to the edge 23 of the box body. The limiting portion 112 is used to press against the support member 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1.

[0097] Figure 1 In this case, the cabinet body 1 can be of a cuboid structure. The first direction X is the length direction of the cabinet body 1, the second direction Y is the width direction of the cabinet body 1, and the third direction Z is the height direction of the cabinet body 1. The height direction of the cabinet body 1 is the height direction when the energy storage device 1000 is placed in the Figure 1 placed manner. Among them, the height direction of the cabinet body 1 can be parallel to the direction of gravity, so as to facilitate stacking multiple battery devices 2. The battery device 2 is lapped between a pair of brackets 11 through the edge 23 of the box body. The pair of brackets 11 are arranged opposite to each other in the first direction X, and the direction in which the battery device 2 is pushed into the bracket 11 is also the second direction Y.

[0098] The material of the cabinet body 1 can be metal materials such as steel and aluminum alloy, and the material of the bracket 11 can be metal materials such as steel and aluminum alloy. As Figure 2 and Figure 4 shown, the bracket 11 includes a first plate 111a, a second plate 111b, and a limiting portion 112 arranged in sequence. The second plate 111b is connected to the cabinet body 1 by welding or the like. The first plate 111a extends from the lower end of the second plate 111b towards the direction of the battery device, so that the gravity of the battery device 2 is mainly concentrated on the first plates 111a of the two opposite brackets 11. The limiting portion 112 is connected to one end of the second plate 111b away from the first plate 111a, that is, the limiting portion 112 extends from the upper end of the second plate 111b towards the direction of the battery device, so that a track is formed between the first plate 111a, the second plate 111b, and the limiting portion 112, and the limiting portion 112 does not bear the gravity of the battery device 2.

[0099] In the related art, the bracket 11 only includes a first plate 111a and a second plate 111b arranged in sequence. The battery device 2 is placed on the bracket 11 and connected to the bracket 11. Since the operator can generally only operate outside the cabinet body 1, it is not convenient to connect the battery device 2 to the bracket 11 inside the cabinet body 1, and the assembly stability of the battery device 2 is not good, affecting the assembly efficiency of the energy storage device.

[0100] In the embodiment of the present application, a limiting portion 112 is provided on the bracket 11. The limiting portion 112 is connected to one end of the second plate 111b away from the first plate 111a. The limiting portion 112 is used to press against the edge 23 of the box body of the battery device 2 to limit the movement of the battery device 2 along the height direction of the cabinet body 1. In this way, the operator can push the battery device 2 into and position it in the bracket 11 outside the cabinet body 1 without reaching into the cabinet body 1 and then assembling the battery device 2 with the bracket 11 through fasteners or the like. The operation is convenient, realizing the drawer-type assembly method of the battery device 2 and improving the assembly efficiency of the energy storage device. In addition, when the battery device 2 fails and needs to be repaired, it is easy to pull the battery device 2 out of the track of the bracket 11, improving the repair efficiency of the battery device 2.

[0101] In addition, considering that there may be manufacturing errors, installation errors, structural deformations, etc. in the edge 23 of the bracket 11 or the box body, resulting in a certain gap in the height direction Z between the edge 23 of the box body and the track of the bracket 11, the edge 23 of the box body of the battery device 2 is likely to shake due to external forces after being inserted into the track, affecting the stability of the battery device 2 on the bracket 11.

[0102] Therefore, in the embodiments of the present application, a support member 3 is provided between the edge 23 of the box body of the battery device 2 and the limiting portion 112. The support member 3 can be pre-set on the edge 23 of the box body, and the limiting portion 112 is used to press against the support member 3 to limit the movement of the battery device 2 in the height direction of the cabinet 1. Optionally, the support member 3 can be pre-set on the edge 23 of the box body by welding. Since the support member 3 is provided on the edge 23 of the box body of the battery device 2, it is convenient for the production process of the battery device 2 itself and is easy to manufacture. In this way, the support member 3 and the limiting portion 112 are crimped through local contact. Compared with the technical solution in which the limiting portion 112 directly presses against the entire surface of the edge 23 of the box body, the crimping force between the edge 23 of the box body of the battery device 2 and the limiting portion 112 can be increased, the possibility of the battery device 2 shaking can be reduced, and the assembly stability of the battery device 2 on the bracket 11 can be further improved.

[0103] According to the energy storage device 1000 provided by the embodiments of the present application, by providing a limiting portion 112 on the bracket 11 and pre-setting a support member 3 on the edge 23 of the box body of the battery device 2, the limiting portion 112 is used to press against the support member 3 to limit the movement of the battery device 2 in the height direction of the cabinet 1. Thus, the operator can push the battery device 2 into and position it on the bracket 11 outside the cabinet 1. While improving the assembly convenience of the battery device 2, the stability of the battery device 2 on the bracket 11 can be improved, and the assembly efficiency of the energy storage device 1000 can be increased.

[0104] In some embodiments, the box body includes a housing 22 and a cover body 21. The cover body 21 is fastened to the housing 22 to form a closed chamber, and a plurality of battery cells 20 are accommodated in the closed chamber. The support member 3 is installed on the edge of the housing 22 and / or the cover body 21.

[0105] In one example, as Figure 2 shown, the edge 23 of the box body is a flange formed after the opening of the cover body 21 and the opening of the housing 22 are fastened to each other; in another example, as Figure 3 shown, the edge 23 of the box body is only a flange formed at the opening of the cover body 21, or only a flange formed at the opening of the housing 22. The support member 3 is installed on the edge of the housing 22 and / or the cover body 21, which is convenient for the production process of the battery device itself, making the various component structures of the battery device 2 simple and easy to manufacture.

[0106] In some embodiments, one end of the support member 3 away from the limiting portion 112 is embedded in the edge of the housing 22 and / or the cover 21. Embedding one end of the support member 3 away from the limiting portion 112 in the edge of the housing 22 and / or the cover 21 can reduce the overall height of the edge 23 of the box body, and further reduce the height dimension of the bracket 11.

[0107] Figure 5 is Figure 2 a schematic structural view seen in one direction, Figure 6 is Figure 2 a schematic structural view seen in another direction, Figure 7 is Figure 5 a sectional view along the direction A-A, Figure 8 is Figure 7 an enlarged structural view of the area C of Figure 9 is Figure 6 a sectional view along the direction B-B, Figure 10 is Figure 9 an enlarged structural view of the area D of

[0108] In some embodiments, the support member 3 is a cylindrical structural member.

[0109] As Figure 7 and Figure 8 shown, blind holes 231 may be provided in the edge 23 of the box body. One end of the support member 3 is embedded in the blind holes 231 and is welded to the blind holes 231. Such a setting can improve the connection strength between the edge 23 of the box body and the support member 3.

[0110] Optionally, the support member 3 may be a sleeve, which is hollow inside, has a light weight, and has sufficient structural strength and stiffness to meet the crimping requirements between the limiting portion 112 and the support member 3. In addition, the sleeve is a commonly used component in the battery device, which can reduce the types of materials and facilitate material management.

[0111] In some embodiments, a rounded corner 31 is provided at one end of the support member 3 facing the limiting portion 112.

[0112] As Figure 8 shown, providing a rounded corner 31 at one end of the support member 3 facing the limiting portion 112 can reduce the possibility of scratching when the support member 3 contacts the limiting portion 112, which is beneficial to smoothly pushing the battery device 2 into the bracket 11.

[0113] In some embodiments, a guiding portion 113 is provided at the rear end of the limiting portion 112 along the pushing direction of the battery device 2, and the guiding portion 113 is inclined outward along the direction away from the first plate 111a.

[0114] The pushing direction of the battery device 2 is also the direction in which the battery device 2 is pushed into the bracket 11. As Figure 4As shown, the second direction Y indicated by the arrow is the direction in which the battery device 2 is pushed into the bracket 11. During the process of pushing the battery device 2 into the bracket 11 along the pushing direction of the battery device 2, the position passed first is the rear, and the position passed later is the front. Refer to Figure 4 As shown, the direction indicated by the arrow in the second direction Y is the direction from front to back. Correspondingly, the rear end of the limiting portion 112 along the pushing direction of the battery device 2 refers to the end portion of the limiting portion 112 passed first during the process of pushing the battery device 2 into the bracket 11 along the pushing direction of the battery device 2.

[0115] A guiding portion 113 is provided at the rear end of the limiting portion 112 along the pushing direction of the battery device 2. The guiding portion 113 is inclined outward along the direction away from the first plate 111a. The guiding portion 113 enlarges the entrance size of the bracket 11, facilitating the smooth pushing and positioning of the edge 23 of the box body of the battery device 2 onto the bracket 11, and further improving the assembly efficiency of the battery device 2.

[0116] In some embodiments, the energy storage device 1000 further includes a buffer member 12, and the buffer member 12 is disposed between the limiting portion 112 and the support member 3.

[0117] Optionally, the buffer member 12 is a foam, which can be bonded to the side of the limiting portion 112 facing the support member 3. The foam is a material foamed from plastic particles, and the material can be, for example but not limited to, polyurethane. The foam is elastic and lightweight, and can fill the space between the limiting portion 112 and the support member 3. On the one hand, it can reduce the gap between the limiting portion 112 and the support member 3 caused by manufacturing errors, installation errors, structural deformations, etc., and increase the pressing force between the edge 23 of the box body and the bracket 11 in the height direction, so that the edge 23 of the box body of the battery device 2 is compacted by the limiting portion 112 after being pushed into the bracket 11, improving the assembly stability of the battery device 2; on the other hand, it can also reduce the possibility of the edge 23 of the box body of the battery device 2 directly damaging the limiting portion 112, and improve the service life of the bracket 11.

[0118] Optionally, the thickness of the buffer member 12 is greater than the gap between the limiting portion 112 and the support member 3. Here, the "thickness of the buffer member 12" refers to the thickness of the buffer member along the height direction Z in the natural state before assembly. When the buffer member 12 is assembled between the limiting portion 112 and the support member 3, the buffer member 12 is adaptively thinned due to being pressed by the limiting portion 112, so as to increase the pressing force between the battery device 2 and the bracket 11 in the height direction Z, and further improve the assembly stability of the battery device 2.

[0119] It should be noted that when a guiding portion 113 is provided at the rear end of the limiting portion 112 along the pushing direction of the battery device 2, the length of the buffer member 12 can be extended to the guiding portion 113, that is, a buffer member 12 is also provided between the guiding portion 113 and the supporting member 3, which can reduce the possibility of the edge 23 of the box body of the battery device 2 damaging the guiding portion 113 and improve the service life of the bracket 11.

[0120] In some embodiments, the number of the limiting portions 112 is multiple, and the multiple limiting portions 112 are arranged at intervals along the pushing direction of the battery device 2 on the bracket 11; the number of the supporting members 3 is multiple, and the positions of the multiple supporting members 3 correspond to the positions of the multiple limiting portions 112 one by one. Along the pushing direction of the battery device 2, the distance between the multiple limiting portions 112 and the first plate 111a gradually decreases, and / or the surface of the supporting member 3 connected to the edge 23 of the box body is the first surface 232, and along the pushing direction of the battery device 2, the dimension of the multiple supporting members 3 protruding from the first surface 232 in the height direction gradually decreases.

[0121] Wherein, when the supporting member 3 is connected to the edge of the cover body 21, the first surface 232 is the surface of the edge of the cover body 21 connecting the supporting member 3; when the supporting member 3 is connected to the edge of the housing 22, the first surface 232 is the surface of the edge of the housing 22 connecting the supporting member 3.

[0122] In this embodiment, the "distance between the limiting portion 112 and the first plate 111a" refers to the distance between the inner wall of the limiting portion 112 on the side facing the first plate 111a and the inner wall of the first plate 111a on the side facing the limiting portion 112. As Figure 2 and Figure 6 shown, the second direction Y indicated by the arrow is the direction in which the battery device 2 is pushed into the bracket 11. Taking the bracket 11 having five limiting portions 112 as an example for illustration, the five limiting portions 112 are arranged at intervals along the pushing direction of the battery device 2 on the bracket 11, and the distances between the five limiting portions 112 and the first plate 111a are d1, d2, d3, d4, and d5 respectively, and d1 > d2 > d3 > d4 > d5, that is, the distance d5 between the limiting portion 112 farthest from the outside of the cabinet body 1 and located at the leftmost (frontmost) side and the first plate 111a is the smallest, and the distance d1 between the limiting portion 112 adjacent to the outside of the cabinet body 1 (rearmost) and located at the rightmost side and the first plate 111a is the largest.

[0123] As Figure 3 and Figure 8As shown, the buffer member 12 is disposed between the limiting portion 112 and the support member 3. The edge 23 of the box body of the battery device 2 and the support member 3 are received between the first plate 111a of the bracket 11 and the limiting portion 112. The surface where the edge 23 of the box body is connected to the support member 3 is the first surface 232. The first surface 232 may be located at the edge of the cover body 21 or at the edge of the housing 22. One end of the support member 3 is embedded in the first surface 232, and the other end abuts against the buffer member 12. The dimension by which the support member 3 protrudes from the first surface 232 in the height direction is h.

[0124] As Figure 7 shown, five support members 3 are spaced apart and disposed on the edge 23 of the box body. And along the pushing direction of the battery device 2, the dimension h by which the five support members 3 protrude from the first surface 232 in the height direction gradually decreases. The support member 3 adjacent to the outside (the rearmost end) of the cabinet body 1 and located on the rightmost side has the largest dimension protruding from the first surface 232 in the height direction, and the support member 3 away from the outside (the foremost end) of the cabinet body 1 and located on the leftmost side has the smallest dimension protruding from the first surface 232 in the height direction, so that each support member 3 can abut against the corresponding limiting portion 112. With such a setting, it is beneficial to smoothly push the battery device 2 into the track of the bracket 11, and at the same time, it is also convenient to pull out the battery device 2 from the bracket 11 for maintenance.

[0125] It should be noted that along the pushing direction of the battery device 2, when the distance between the plurality of limiting portions 112 and the first plate 111a gradually decreases, the dimension by which the plurality of support members 3 protrude from the first surface 232 in the height direction does not necessarily have to gradually decrease. Or, when the dimension by which the plurality of support members 3 protrude from the first surface 232 in the height direction gradually decreases, the distance between the plurality of limiting portions 112 and the first plate 111a does not necessarily have to gradually decrease, as long as it does not affect the smooth pushing or pulling of the edge 23 of the box body of the battery device 2 into or out of the track of the bracket 11.

[0126] Optionally, along the pushing direction of the battery device 2, the distance between the plurality of limiting portions 112 and the first plate 111a decreases arithmetically, and / or the dimension by which the plurality of support members 3 protrude from the first surface 232 in the height direction decreases arithmetically.

[0127] Still taking the bracket 11 having five limiting portions 112 as an example for illustration, different distances are formed between the five limiting portions 112 and the first plate 111a, and this distance decreases arithmetically along the pushing direction of the battery device 2. Correspondingly, the dimension by which the five support members 3 protrude from the first surface 232 in the height direction decreases arithmetically. Specifically, Figure 2 and Figure 6 if the limiting portion 112 located on the rightmost side in

[0128] Accordingly, Figure 7 if the rightmost support member 3 among them is the first support member adjacent to the outer side of the cabinet body 1, then starting from the second support member, the dimension by which each support member 3 protrudes from the first surface 232 in the height direction is equal to the difference in the dimension by which its previous support member 3 protrudes from the first surface 232 in the height direction. The design in which the distances between the multiple limiting portions 112 and the first plate 111a decrease in an arithmetic progression and the design in which the dimensions by which the multiple support members 3 protrude from the first surface 232 in the height direction decrease in an arithmetic progression are conducive to smoothly pushing or pulling out the edge 23 of the box body of the battery device 2 along the track of the bracket 11, and reduce the possibility of the battery device 2 being stuck during disassembly and assembly.

[0129] It should be noted that when the distances between the multiple limiting portions 112 and the first plate 111a decrease in an arithmetic progression along the pushing direction of the battery device 2, the heights by which the multiple support members 3 protrude from the first surface 232 may also decrease non-arithmetically, or when the heights by which the multiple support members 3 protrude from the first surface 232 decrease in an arithmetic progression, the distances between the multiple limiting portions 112 and the first plate 111a may also decrease non-arithmetically, as long as it does not affect the smooth pushing or pulling out of the edge 23 of the box body of the battery device 2 along the track of the bracket 11.

[0130] It can be understood that when a guiding portion 113 is provided at the rear end of the limiting portion 112 along the pushing direction of the battery device 2, in the pushing direction of the battery device 2, when the distances between the multiple limiting portions 112 and the first plate 111a decrease in an arithmetic progression, the inlet dimensions of the multiple guiding portions 113 will also decrease in an arithmetic progression, which is convenient for guiding the edge 23 of the box body of the battery device 2 to be gradually pushed into the track of the bracket 11.

[0131] In some embodiments, a convex portion 111c is provided on the side of the second plate 111b of the bracket 11 facing the battery device 2. As Figure 6 , Figure 9 and Figure 10 shown, the convex portion 111c is a strip-shaped structure, and the convex portion 111c protrudes from the second plate 111b towards the battery device 2. The convex portion 111c can reduce the gap between the edge 23 of the box body of the battery device 2 and the second plate 111b of the bracket 11, increase the friction between the two, and reduce the possibility of the battery device 2 shifting during the process of being pushed into or pulled out of the bracket 11.

[0132] Optionally, the convex portion 111c is formed by stamping the second plate 111b toward the battery device 2. The material of the bracket 11 can be galvanized steel sheet, which has good strength and anti-corrosion effect. The convex portion 111c can be formed by stamping on the second plate 111b of the bracket 11. When viewed from the outer side of the second plate 111b facing away from the battery device 2, the convex portion 111c is recessed with respect to the second plate 111b toward the battery device 2. At the same time, when viewed from the inner side of the second plate 111b facing the battery device 2, the convex portion 111c protrudes with respect to the second plate 111b. The manufacturing process is simple, which is conducive to mass production.

[0133] Optionally, the number of the convex portions 111c is multiple, and the multiple convex portions 111c are arranged at intervals along the pushing direction of the battery device 2. Along the pushing direction of the battery device 2, the dimensions of the multiple convex portions 111c protruding with respect to the second plate 111b gradually increase.

[0134] As Figure 6 shown, the second direction Y indicated by the arrow is the direction in which the battery device 2 is pushed into the bracket 11. The second plate 111b is provided with three convex portions 111c, and the three convex portions 111c are arranged at intervals along the pushing direction of the battery device 2. As Figure 10 shown, the dimension of the convex portion 111c protruding with respect to the second plate 111b is t. Along the pushing direction of the battery device 2, the dimensions t of the three convex portions 111c protruding with respect to the second plate 111b gradually increase. Taking Figure 6 the example that the second plate 111b is provided with three convex portions 111c, the convex portion 111c adjacent to the outer side of the cabinet body 1 and located at the rightmost side in the figure has the largest dimension protruding with respect to the second plate 111b, and the convex portion 111c far from the outer side (the front end) of the cabinet body 1 and located at the leftmost side in the figure has the smallest dimension protruding with respect to the second plate 111b. Such a setting is conducive to smoothly pushing the edge 23 of the box body of the battery device 2 into the track of the bracket 11, and at the same time, it is also convenient to pull out the battery device 2 from the bracket 11 for maintenance.

[0135] Optionally, along the pushing direction of the battery device 2, the dimensions of the multiple convex portions 111c protruding with respect to the second plate 111b increase arithmetically.

[0136] Specifically, still taking the example that the second plate 111b is provided with three convex portions 111c, as Figure 6As shown, taking the convex portion 111c adjacent to the outer side of the cabinet body 1 and located at the rightmost side in the figure as the first convex portion, starting from the second convex portion, the difference in the size of each convex portion protruding relative to the second plate 111b from its previous convex portion protruding relative to the second plate 111b is the same. Along the pushing direction of the battery device 2, the sizes of the plurality of convex portions 111c protruding relative to the second plate 111b increase arithmetically, which is beneficial to smoothly pushing or pulling out the edge 23 of the box body along the track of the bracket 11, and reducing the possibility of the battery device 2 shifting during disassembly and assembly.

[0137] In some embodiments, a reinforcing portion 111d is provided at the intersection of the second plate 111b and the first plate 111a. The reinforcing portion 111d can improve the structural strength and stiffness of the bracket 11 and reduce the possibility of the bracket 11 deforming.

[0138] Optionally, the reinforcing portion 111d is recessed from the intersection of the second plate 111b and the first plate 111a towards the direction of the battery device 2.

[0139] As Figure 2 shown, the reinforcing portion 111d can be formed at the intersection of the second plate 111b and the first plate 111a by stamping process, and the manufacturing process is simple and suitable for mass production.

[0140] In some embodiments, a fixing portion 114 is further provided at the rear end of the first plate 111a of the bracket 11 along the pushing direction of the battery device 2, and the bracket 11 is fixedly connected to the edge 23 of the box body through the fixing portion 114.

[0141] As Figure 2 、 Figure 5 and Figure 6 shown, the rear end of the first plate 111a along the pushing direction of the battery device 2 is also the end of the first plate 111a that the battery device 2 passes through first when it is pushed into the bracket 11 along the pushing direction, and this end is also the end of the bracket 11 facing the outer side of the cabinet body 1. The fixing portion 114 is provided at the end of the bracket 11 facing the outer side of the cabinet body 1, and a transfer rack is correspondingly provided at the edge 23 of the box body of the battery device 2. The transfer rack is provided with a plurality of through holes, and the fixing portion 114 is correspondingly provided with a plurality of nuts, which is convenient for the operator to pass the bolts through the through holes and thread them with the nuts outside the cabinet body 1, thereby fixedly connecting the bracket 11 to the edge 23 of the box body and further improving the assembly stability of the battery device 2.

[0142] Figure 11 This is a schematic diagram of the assembly of the cabinet body and the bracket provided by some embodiments of the present application.

[0143] Refer to Figure 11, in some embodiments, the cabinet 1 includes a frame 10 and a housing 102 covering the frame 10. The frame 10 includes a plurality of columns 101, and the plurality of columns 101 can be arranged in a rectangular array. The columns 101 extend along the height direction of the cabinet 1, and a plurality of clamping portions 103 are arranged at intervals along the height direction on the columns 101. The clamping portions 103 can be grooves formed on the columns 101 or protruding steps formed on the columns 101. A plurality of pairs of brackets 11 are connected to the corresponding clamping portions 103 for carrying a plurality of battery devices 2. In this way, the plurality of battery devices 2 can be stacked along the height direction of the cabinet 1, achieving high component group efficiency and high energy density of the battery devices. The housing 102 is used to isolate the interior of the cabinet 1 from the external environment. The housing 102 surrounds the outside of the columns 101 and the plurality of brackets 11, providing safety protection for the battery devices 2 arranged on the brackets 11 and reducing the risk of sundries, water, etc. falling onto the battery devices 2.

[0144] In one example, the manufacturing process of the energy storage device 1000 can be as follows: First, enclose a plurality of columns 101 to form a frame 10, then assemble the frame 10 with the housing 102, and then connect a plurality of pairs of brackets 11 to the corresponding clamping portions 103 of the frame 10 to complete the assembly of the cabinet 1. Finally, push the plurality of battery devices 2 into the tracks of the corresponding brackets 11 one by one.

[0145] In another example, the manufacturing process of the energy storage device 1000 can be as follows: First, arrange two columns 101 opposite to each other along the second direction Y, then connect a plurality of pairs of brackets 11 to the clamping portions 103 of the columns 101 respectively to form trapezoidal frames. Make a plurality of trapezoidal frames in sequence, then arrange two trapezoidal frames opposite to each other along the first direction X, arrange the plurality of trapezoidal frames in sequence along the first direction X, then assemble the housing 102 with the columns 101 to complete the assembly of the cabinet 1. Finally, push the plurality of battery devices 2 into the tracks of the corresponding brackets 11 one by one.

[0146] Refer to Figures 1 to 11, this embodiment provides an energy storage device 1000, which includes a cabinet 1 with a battery compartment, a plurality of battery devices 2 arranged in the cabinet 1, a column 101, and a plurality of brackets 11 connected to the column 101. The cabinet 1 includes a battery compartment, and a plurality of battery devices 2 are arranged in the battery compartment. The battery device 2 includes a box body and a plurality of battery cells 20 accommodated in the box body. The column 101 is connected to the top wall and the bottom wall of the cabinet 1, and a plurality of brackets 11 are connected to the column 101 along the height direction of the cabinet 1. The battery device 2 is slidably arranged between two opposite brackets 11 through the edge 23 of the box body. The bracket 11 includes a first plate 111a, a second plate 111b, and a limiting portion 112 connected in sequence. The first plate 111a is used to support the battery device 2, and the limiting portion 112 is connected to one end of the second plate 111b away from the first plate 111a; wherein, the battery device 2 further includes a support member 3, the support member 3 is connected to the edge 23 of the box body, and the limiting portion 112 is used to press against the support member 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1. By providing the limiting portion 112 on the bracket 11 and pre-setting the support member 3 on the edge 23 of the box body of the battery device 2, the limiting portion 112 is used to press against the support member 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1. The operator can push the battery device 2 into and position it on the bracket 11 outside the cabinet 1, which improves the assembly convenience of the battery device while enhancing the stability of the battery device 2 on the bracket 11 and improving the assembly efficiency of the energy storage device 1000. The energy storage device 1000 further includes a buffer member 12, the buffer member 12 is arranged between the limiting portion 112 and the support member 3, and the thickness of the buffer member 12 is greater than the gap between the limiting portion 112 and the support member 3, increasing the pressing force between the battery device 2 and the bracket 11 along the height direction. A plurality of limiting portions 112 are arranged on the bracket 11 at intervals along the pushing direction of the battery device 2, and the positions of a plurality of support members 3 correspond to the positions of a plurality of limiting portions 112 one by one. Along the pushing direction of the battery device 2, the distances between a plurality of limiting portions 112 and the first plate 111a decrease in an arithmetic progression, and the dimensions of a plurality of support members 3 protruding from the edge 23 of the box body along the height direction decrease in an arithmetic progression, which is beneficial to smoothly push the battery device 2 into or pull it out of the track of the bracket 11 and reduce the possibility of the battery device 2 being stuck during disassembly and assembly. In addition, a plurality of convex portions 111c are arranged on the side of the second plate 111b of the bracket 11 facing the battery device 2 at intervals along the pushing direction of the battery device 2, and along the pushing direction of the battery device 2, the dimensions of a plurality of convex portions 111c protruding relative to the second plate 111b increase in an arithmetic progression, which is beneficial to smoothly push the edge 23 of the box body into or pull it out of the track of the bracket 11 and reduce the possibility of the battery device 2 shifting during disassembly and assembly.

[0147] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be repeated herein.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, Comprising: A cabinet body including a battery compartment; A plurality of battery devices disposed in the battery compartment, the battery device including a box body and a plurality of battery cells accommodated in the box body; Columns connected to the top wall and the bottom wall of the cabinet body; and Multiple pairs of brackets sequentially connected to the columns along the height direction of the cabinet body, each battery device is lapped on a pair of the brackets through the edge of the box body, the bracket includes a first plate, a second plate and a limiting portion connected in sequence, the first plate is used for supporting the battery device, and the limiting portion is connected to one end of the second plate away from the first plate; Wherein, the battery device further includes a support member, the support member is connected to the edge of the box body, and the limiting portion is used for pressing against the support member to limit the movement of the battery device along the height direction of the cabinet body.

2. The energy storage device according to claim 1, characterized in that, The box body includes a housing and a cover body, the cover body is buckled with the housing to form a closed chamber, and a plurality of the battery cells are accommodated in the closed chamber, and the support member is installed on the edge of the housing and / or the edge of the cover body.

3. The energy storage device according to claim 2, characterized in that, One end of the support member away from the limiting portion is embedded in the edge of the housing and / or the edge of the cover body.

4. The energy storage device according to claim 1, characterized in that, The support member is a cylindrical structural member.

5. The energy storage device according to claim 4, wherein One end of the support member facing the limiting portion is provided with a rounded corner.

6. The energy storage device according to claim 1, characterized in that A guiding portion is provided at the rear end of the limiting portion along the pushing direction of the battery device, and the guiding portion is inclined outward in a direction away from the first plate.

7. The energy storage device according to claim 1, characterized in that, The energy storage device further includes a buffer member, and the buffer member is disposed between the limiting portion and the support member.

8. The energy storage device according to claim 7, wherein The thickness of the buffer member is greater than the gap between the limiting portion and the support member.

9. The energy storage device according to any one of claims 1 to 8, characterized in that, The number of the limiting portions is multiple, and the multiple limiting portions are spaced along the pushing direction of the battery device on the second plate; The number of the support members is multiple, the positions of the multiple support members correspond to the positions of the multiple limiting portions one by one, along the pushing direction of the battery device, the distance between the multiple limiting portions and the first plate gradually decreases, and / or, the surface of the edge of the box body connected to the support member is a first surface, along the pushing direction of the battery device, the dimension of the multiple support members protruding from the first surface in the height direction gradually decreases.

10. The energy storage device according to claim 9, wherein Along the pushing direction of the battery device, the distance between the multiple limiting portions and the first plate decreases arithmetically; and / or, along the pushing direction of the battery device, the dimension of the multiple support members protruding from the first surface in the height direction decreases arithmetically.

11. The energy storage device according to any one of claims 1 to 8, characterized in that, A convex portion is provided on one side of the second plate facing the battery device.

12. The energy storage device according to claim 11, characterized in that, The number of the convex portions is multiple, the multiple convex portions are spaced along the pushing direction of the battery device, and along the pushing direction of the battery device, the dimension of the multiple convex portions protruding relative to the second plate gradually increases.

13. The energy storage device according to claim 12, wherein, Along the pushing direction of the battery device, the dimension of the multiple convex portions protruding relative to the second plate increases arithmetically.

14. The energy storage device according to any one of claims 1 to 8, characterized in that, A reinforcing portion is provided at the intersection of the second plate and the first plate.

15. The energy storage device according to claim 14, wherein The reinforcing portion is recessed from the intersection of the second plate and the first plate in a direction towards the battery device.

16. The energy storage device according to any one of claims 1 to 8, characterized in that, A fixing part is further arranged at the rear end of the first plate along the pushing direction of the battery device, and the bracket is fixedly connected with the edge of the box body through the fixing part.

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