Energy storage apparatus, energy storage system, and charging network

Abstract

An energy storage apparatus (1000), an energy storage system (2000), and a charging network (4000). The energy storage apparatus (1000) comprises: a cabinet body (1), a plurality of battery apparatuses (2), columns (101), and a plurality of brackets (11). The cabinet body (1) comprises a battery compartment. The plurality of battery apparatuses (2) are arranged in the battery compartment. The columns (101) are connected to a top wall and a bottom wall of the cabinet body (1). The plurality of brackets (11) are connected to the columns (101) in the height direction of the cabinet body (1). Each battery apparatus (2) is pushably and pullably arranged between two opposite brackets (11) by means of edges (23) of a box body. Each bracket (11) comprises a first plate (111a), a second plate (111b), and a limiting part (112) that are connected in sequence. The first plate (111a) is used to support the battery apparatus (2). The limiting part (112) is connected to one end of the second plate (111b) away from the first plate (111a). Each battery apparatus (2) further comprises support members (3), the support members (3) being connected to the edges (23) of the box body, and the limiting parts (112) being used to press against the support members (3), so as to restrict the movement of the battery apparatus (2) in the height direction of the cabinet body (1), thereby improving the stability of the battery apparatus (2) on the brackets (11) and improving the assembly efficiency of the energy storage apparatus (1000) while improving the convenience of assembling the battery apparatus (2).

Description

Energy storage device, energy storage system and charging network

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202421983304.X, filed on August 15, 2024, entitled “Energy Storage Device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of battery device, and more particularly, to an energy storage device, an energy storage system and a charging network. BACKGROUND

[0004] The energy storage device generally includes a cabinet and a plurality of battery devices, the cabinet has a battery compartment, a plurality of brackets are arranged in the cabinet, and the battery devices are placed on the brackets, so as to arrange the plurality of battery devices in the battery compartment, realize high group efficiency and high energy density of the battery devices. At present, since the operator can only operate outside the cabinet, it is not convenient to assemble the battery devices and the brackets together in the battery compartment, and the assembly stability of the battery devices is not good. SUMMARY

[0005] The purpose of the present application is to provide an energy storage device, an energy storage system and a charging network, which can quickly assemble the battery devices to the brackets of the cabinet, improve the assembly stability of the battery devices, and improve the assembly efficiency of the energy storage device.

[0006] The first aspect of the present application provides an energy storage device, comprising: a cabinet including a battery compartment; a plurality of battery devices arranged in the battery compartment, the battery device comprising a box body and a plurality of battery cells contained in the box body; a stand connected to the top wall and the bottom wall of the cabinet; a plurality of pairs of brackets connected to the stand in sequence along the height direction of the cabinet, each battery device is lapped on a pair of brackets through the edge of the box body, the bracket comprises a first plate, a second plate and a limiting part connected in sequence, the first plate is used for supporting the battery device, and the limiting part is connected to one end of the second plate away from the first plate; wherein the battery device further comprises a support connected to the edge of the box body, and the limiting part is used for pressing the support to limit the movement of the battery device along the height direction of the cabinet.

[0007] The energy storage device according to the embodiment of the present application comprises a cabinet body with a battery compartment, a plurality of battery devices arranged in the cabinet body, a plurality of pairs of brackets connected with the stand column, and the battery device comprises a box body and a plurality of battery monomers contained in the box body. Each battery device is overlapped on a pair of brackets through the edge of the box body. The bracket comprises a first plate, a second plate and a limiting part connected in sequence. The first plate is used for supporting the battery device. The limiting part is connected to the end of the second plate away from the first plate. The edge of the box body of the battery device is provided with a support in advance. The limiting part is used for pressing the support to limit the movement of the battery device along the height direction of the cabinet body. Since the support is arranged at the edge of the box body of the battery device, the production process of the battery device itself is facilitated, and the manufacturing is facilitated. Therefore, the operator can push the battery device into and position on the bracket outside the cabinet body. The assembly convenience of the battery device is improved, the stability of the battery device on the bracket is improved, and the assembly efficiency of the energy storage device is improved.

[0008] In addition, the energy storage device according to the present application can also have the following additional technical features:

[0009] In some embodiments, the box body comprises a shell and a cover. The cover is buckled with the shell to form a closed chamber. The plurality of battery monomers are contained in the closed chamber. The support is installed at the edge of the shell and / or the cover.

[0010] The above technical solution, the support is installed at the edge of the shell and / or the cover, which facilitates the production process of the battery device itself, and the structure is simple and easy to manufacture.

[0011] In some embodiments, an end of the support away from the limiting part is embedded in the edge of the shell and / or the edge of the cover.

[0012] The above technical solution, the end of the support away from the limiting part is embedded in the edge of the shell 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.

[0013] In some embodiments, the support comprises a first part and a second part connected with each other. The second part is in pressing cooperation with the limiting part. The first part is located at one end of the second part away from the limiting part. The cross-sectional area of the second part is greater than that of the first part.

[0014] The above technical solution, the second part has a larger support area which can be better pressed with the limiting part. The area of the first part is smaller, which can reduce the weight of the support, thereby reducing the weight of the battery device.

[0015] In some embodiments, the edge of the shell and / or the edge of the cover is provided with a mounting hole. The hole wall of the mounting hole is formed with a clamping groove. The first part and part of the second part are embedded in the mounting hole. The second part is abutted against the clamping groove.

[0016] The second part cooperates with the clamping base to position the installation position of the support piece, and the clamping base cooperates with the second part to improve the support strength.

[0017] In some embodiments, the support piece is a cylindrical structure.

[0018] The support piece can be a sleeve, which is hollow inside, light in weight, and has sufficient structural strength and rigidity to meet the pressure bonding requirement between the limiting part and the support piece. In addition, the sleeve is a commonly used component in the battery device, which can reduce the types of materials and facilitate material management.

[0019] In some embodiments, the end of the support piece towards the limiting part is provided with a rounded corner.

[0020] The end of the support piece towards the limiting part is provided with a rounded corner, which can reduce scratches when the support piece contacts the limiting part, reduce the friction between them, and facilitate the smooth pushing of the battery device into the bracket.

[0021] In some embodiments, the limiting part is provided with a guide part at the rear end in the pushing direction of the battery device, and the guide part is inclined outwardly in a direction away from the first plate.

[0022] The guide part enlarges the entrance size of the bracket, facilitates the quick entry of the edge of the battery device into the bracket, and improves the assembly efficiency of the energy storage device.

[0023] In some embodiments, the energy storage device further comprises a buffer piece, which is arranged between the limiting part and the support piece.

[0024] The buffer piece can fill the gap between the limiting part and the support piece of the bracket due to manufacturing errors, installation errors, structural deformation, etc., increase the pressure bonding force between the battery device and the bracket in the height direction, make the edge of the battery device compacted by the limiting part after being pushed into the bracket, and improve the assembly stability of the battery device. On the other hand, it can also reduce the possibility of the edge of the battery device directly scratching the limiting part, and improve the service life of the bracket.

[0025] In some embodiments, the thickness of the buffer piece is greater than the gap between the limiting part and the support piece.

[0026] In some embodiments, the energy storage device further comprises a buffer piece, which covers one side of the guide part towards the support piece. The guide part is covered by the buffer piece, which can reduce the possibility of the edge of the battery device scratching the guide part, and improve the service life of the bracket.

[0027] The technical solution can further increase the pressing force between the edge of the battery device box and the bracket in the height direction.

[0028] In some embodiments, the number of limiting parts is multiple, the multiple limiting parts are arranged on the second plate in the pushing direction of the battery device; the number of support parts is multiple, the positions of the multiple support parts correspond to the positions of the multiple limiting parts one by one, the distance between the multiple limiting parts and the first plate gradually decreases in the pushing direction of the battery device, and / or the surface of the edge of the box connected with the support part is the first surface, and the size of the multiple support parts protruding from the first surface in the height direction gradually decreases in the pushing direction of the battery device.

[0029] The technical solution is beneficial to smoothly push the edge of the battery device box into the bracket, and also facilitates pulling out the battery device from the bracket for maintenance.

[0030] In some embodiments, the gap between the multiple limiting parts and the first plate decreases in an arithmetic progression in the pushing direction of the battery device; and / or the size of the multiple support parts protruding from the first surface in the height direction decreases in an arithmetic progression in the pushing direction of the battery device.

[0031] The technical solution is beneficial to stably push or pull out the edge of the battery device box from the track, and reduces the possibility of the battery device being stuck during disassembly.

[0032] In some embodiments, the second plate is provided with a convex part on the side facing the battery device.

[0033] The technical solution can reduce the gap between the edge of the battery device box and the second plate of the bracket, increase the friction therebetween, and reduce the possibility of the battery device being deviated during disassembly.

[0034] In some embodiments, the convex part is formed by punching the second plate towards the battery device.

[0035] The technical solution can be formed by punching the second plate, and the manufacturing process is simple, which is beneficial to batch production.

[0036] In some embodiments, the number of convex parts is multiple, the multiple convex parts are arranged in the pushing direction of the battery device, and the size of the multiple convex parts protruding from the second plate gradually increases in the pushing direction of the battery device.

[0037] The technical solution is beneficial to smoothly push the edge of the battery device box into the bracket, and also facilitates pulling out the battery device from the bracket for maintenance.

[0038] In some embodiments, the size of the multiple convex parts protruding from the second plate increases in an arithmetic progression in the pushing direction of the battery device.

[0039] The technical solution has the advantages of smoothly pushing or pulling the edge of the battery device box into or out of the bracket, and reducing the possibility of the battery device being stuck during disassembly.

[0040] In some embodiments, a reinforcing portion is arranged at the intersection of the second plate and the first plate.

[0041] The technical solution has the advantages of improving the structural strength and rigidity of the bracket, and preventing the bracket from deforming.

[0042] In some embodiments, the reinforcing portion is recessed from the intersection of the second plate and the first plate towards the direction of the battery device.

[0043] The technical solution has the advantages of being formed at the intersection of the second plate and the first plate by a stamping process, simple manufacturing process, and suitable for mass production.

[0044] In some embodiments, the first plate further has a fixing portion at the rear end in the pushing direction of the battery device, and the bracket is fixedly connected with the edge of the box through the fixing portion.

[0045] The technical solution has the advantages of being arranged at the end of the bracket towards the outside of the cabinet, facilitating the operator to fix the edge of the box of the battery device with the bracket outside the cabinet, and further improving the assembly stability of the battery device.

[0046] The second aspect of the application provides an energy storage system, which comprises an energy storage converter and the energy storage device of the application or any embodiment of the application, the energy storage converter is electrically connected with the energy storage device, and is used for guiding the power provided by a power generation device into the energy storage device for storage after power conversion.

[0047] The energy storage system of the application has the same beneficial effects as the energy storage device of the application or any embodiment of the application.

[0048] The third aspect of the application provides a charging network, which comprises a charging pile and the energy storage device or the energy storage system of the application or any embodiment of the application, the energy storage device is electrically connected with the charging pile, and is used for providing power for the charging pile.

[0049] The charging network of the application has the same beneficial effects as the energy storage device of the application or any embodiment of the application.

[0050] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not intended to be limiting of the application. Moreover, in the drawings, like reference numerals denote similar parts throughout the several views. In the drawings:

[0052] FIG. 1 is a structural schematic diagram of an energy storage device according to some embodiments of the present application;

[0053] FIG. 2 is an assembly schematic diagram of a pair of brackets and a battery device according to some embodiments of the present application;

[0054] FIG. 3 is a structural schematic diagram of a battery device according to some embodiments of the present application;

[0055] FIG. 4 is a structural schematic diagram of a bracket according to some embodiments of the present application;

[0056] FIG. 5 is a structural schematic diagram of FIG. 2 viewed in one direction;

[0057] FIG. 6 is a structural schematic diagram of FIG. 2 viewed in another direction;

[0058] FIG. 7 is a sectional view of FIG. 5 along direction A-A;

[0059] FIG. 8 is an enlarged structural diagram of region C of FIG. 7;

[0060] FIG. 9 is a sectional view of FIG. 6 along direction B-B;

[0061] FIG. 10 is an enlarged structural diagram of region D of FIG. 9;

[0062] FIG. 11 is an assembly schematic diagram of a cabinet and brackets according to some embodiments of the present application;

[0063] FIG. 12 is a structural schematic diagram of a charging network according to some embodiments of the present application;

[0064] FIG. 13 is a structural schematic diagram of an energy storage system according to some embodiments of the present application.

[0065] The reference signs in the detailed description of the embodiments are as follows: 1000, energy storage device; 2000, energy storage system; 3000, power generation device; 4000, charging network; 1, cabinet body; 2, battery device; 3, support; 31, round corner; 32, first part; 33, second part; 10, frame; 101, column; 102, shell; 103, clamping part; 11, bracket; 111a, first plate; 111b, second plate; 111c, convex part; 111d, reinforcing part; 112, limiting part; 113, guide part; 114, fixing part; 12, buffer; 20, battery monomer; 21, cover body; 22, shell; 23, edge of box body; 231, mounting hole; 232, first surface; 233, clamping table; 200, energy storage device; 300, charging pile; 400, energy storage converter; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0066] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0068] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0069] In this paper, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0070] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0071] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0072] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0073] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] The energy storage device generally includes a cabinet and a plurality of battery devices, the cabinet includes a battery compartment, a plurality of brackets are arranged in the cabinet, and the battery devices are arranged on the brackets, so as to arrange the plurality of battery devices in the battery compartment, realize high group efficiency and high energy density of the battery devices. For a general energy storage device, a plurality of columns constitute the frame of the cabinet, the bracket is usually connected with the column in the frame of the cabinet, and the battery device is connected with the bracket. Since the operator can only operate outside the cabinet, it is not convenient to stretch into the battery compartment to assemble the battery device and the bracket together, and the assembly stability of the battery device is not good.

[0075] In view of this, the application provides an energy storage device. A limiting part is arranged on the bracket, and a support is arranged in advance at the edge of the battery device box. The limiting part is used to press against the support to limit the movement of the battery device in the height direction of the cabinet. The operator can push the battery device into the bracket and position it on the bracket outside the cabinet. This improves the assembly convenience of the battery device, improves the assembly stability of the battery device on the bracket, and improves the assembly efficiency of the energy storage device.

[0076] The energy storage device disclosed in the embodiments of the application can be used in energy storage power stations, battery swap stations, etc., and can also be applied to power consumption devices to supply power to the power consumption devices.

[0077] For the convenience of description, the following embodiments take the energy storage device 1000 provided by some embodiments of the application as an example for description.

[0078] FIG. 1 is a structural schematic diagram of an energy storage device provided by some embodiments of the application, FIG. 2 is an assembly schematic diagram of a pair of brackets and a battery device provided by some embodiments of the application, FIG. 3 is a structural schematic diagram of a battery device provided by some embodiments of the application, and FIG. 4 is a structural schematic diagram of a bracket provided by some embodiments of the application. Referring to FIGS. 1 to 4, the embodiments of the application provide an energy storage device 1000, which includes one or more battery clusters to improve the voltage and capacity of the energy storage device 1000. The battery cluster can include a plurality of battery devices 2, and the plurality of battery devices 2 are connected in series through a busbar component to improve 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 improve the capacity of the energy storage device 1000.

[0079] The energy storage device 1000 can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, 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 the off-peak period of electricity consumption, and provide electrical energy for related users or power consumption equipment during the peak period of electricity consumption. The energy storage system provided by the embodiments of the application can be any power system that needs to use an energy storage device.

[0080] In some embodiments, the energy storage device 1000 is an energy storage container or an energy storage cabinet.

[0081] In some embodiments, the energy storage device 1000 can include a cabinet 1 and one or more battery clusters, and the battery cluster is contained in the cabinet 1.

[0082] The battery apparatus 2 mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 20 connected in series, in parallel, or in a mixed connection through a busbar component.

[0083] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 20.

[0084] 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.

[0085] 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-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0086] The battery cell 20 generally includes a housing, an electrode assembly, and an electrode terminal. The electrode terminal is disposed on the housing, and the electrode assembly is disposed in the housing. The electrode terminal is electrically connected to the tab of the electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator is disposed between the negative electrode and the positive electrode. During the charging and discharging of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time, the active ions can pass through.

[0087] In some embodiments, the battery apparatus 2 can be a battery pack, which includes a box body and one or more battery cell assemblies. The battery cell assemblies are accommodated in the box body.

[0088] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing the plurality of battery cells 20 to the box body.

[0089] As an example, the box body can include a cover body 21 and a shell body 22. The cover body 21 and the shell body 22 are buckled so that an enclosed space is formed inside the box body to accommodate the battery cell assembly. Here, the enclosed refers to covering or closing, which can be sealed or unsealed.

[0090] As an example, the shell body 22 can include a frame structure and a seat body connected to the frame structure. The frame structure and the seat body of the shell body 22 can be an integrally formed structure or a separately assembled structure. The frame structure of the shell body 22 is connected to the cover body 21, so that an enclosed chamber is formed inside the box body to accommodate the battery cell assembly.

[0091] In some embodiments, the energy storage device 1000 can further include a thermal management module, a master control module, a general control module, a power distribution module, a fire control module, and the like.

[0092] As an example, the thermal management module can include a liquid cooling unit that provides cooling liquid to each battery device through a pipeline for adjusting the temperature of the battery cells.

[0093] As an example, the master control module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master control module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, and the like of the battery cluster can be controlled. The master control module includes a slave battery management unit SBMU (SBMU), a fusion switch, and the like.

[0094] As an example, the general control module can serve as a battery management unit of the energy storage device for monitoring and managing the energy storage device. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current, voltage, and the like of the energy storage device can be controlled. As an example, the general control module includes an insulation monitoring module IMM (IMM), a master battery management unit MBMU (MBMU), an Ethernet ETH (ETH), and an optical fiber conversion module, and the like.

[0095] As an example, the fire control system includes a control panel, a detector, an alarm device, and the like, for detecting, alarming, or extinguishing the energy storage system.

[0096] As an example, the power distribution device can be used to distribute power to the power consumption modules of the energy storage device.

[0097] Referring to FIGS. 1-4, some embodiments of the present application provide an energy storage device 1000, which includes a cabinet 1, a plurality of battery devices 2, a support 3, a stand column 101, and a plurality of pairs of brackets 11.

[0098] The cabinet 1 includes a battery compartment, and the 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 contained in the box body.

[0099] The stand column 101 is connected to the top wall and the bottom wall of the cabinet 1, and the plurality of pairs of brackets 11 are sequentially connected to the stand 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.

[0100] The bracket 11 comprises a first plate 111a, a second plate 111b and a limiting part 112 connected in sequence, the first plate 111a is used for supporting the battery device 2, and the limiting part 112 is connected to one end of the second plate 111b away from the first plate 111a; wherein the battery device 2 further comprises a support 3, the support 3 is connected to the edge 23 of the cabinet, and the limiting part 112 is used for pressing the support 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1.

[0101] In FIG. 1, the cabinet 1 can have a cuboid structure, the first direction X is the length direction of the cabinet 1, the second direction Y is the width direction of the cabinet 1, and the third direction Z is the height direction of the cabinet 1, which is the height direction when the energy storage device 1000 is placed in the manner of FIG. 1. The height direction of the cabinet 1 can be parallel to the direction of gravity, so as to facilitate the stacking of multiple battery devices 2. The battery device 2 is lapped on a pair of brackets 11 through the edge 23 of the cabinet, and the pair of brackets 11 are oppositely arranged along 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.

[0102] The material of the cabinet 1 can be steel, aluminum alloy or other metal materials, and the material of the bracket 11 can be steel, aluminum alloy or other metal materials. As shown in FIG. 2 and FIG. 4, the bracket 11 comprises a first plate 111a, a second plate 111b and a limiting part 112 connected in sequence, the second plate 111b is connected with the cabinet 1 by welding or other methods, and the first plate 111a extends from the lower end of the second plate 111b towards 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 part 112 is connected to one end of the second plate 111b away from the first plate 111a, that is, the limiting part 112 extends from the upper end of the second plate 111b towards the battery device, so that the first plate 111a, the second plate 111b and the limiting part 112 form a track, and the limiting part 112 does not bear the gravity of the battery device 2.

[0103] In the related art, the bracket 11 only comprises a first plate 111a and a second plate 111b connected in sequence, and the battery device 2 is placed on the bracket 11 and connected with the bracket 11. Since the operator can only operate outside the cabinet 1, it is not convenient to connect the battery device 2 with the bracket 11 inside the cabinet 1, the assembly stability of the battery device 2 is not good, and the assembly efficiency of the energy storage device is affected.

[0104] In the embodiment of the present application, the bracket 11 is provided with a limiting portion 112 connected to the end of the second plate 111b away from the first plate 111a, and the limiting portion 112 is used to abut against the edge 23 of the box of the battery device 2 to limit the movement of the battery device 2 along the height direction of the cabinet 1. In this way, the operator can push the battery device 2 into the bracket 11 outside the cabinet 1, and there is no need to stretch into the cabinet 1 to assemble the battery device 2 and the bracket 11 together through fasteners or the like, which is convenient to operate and realizes the drawer type assembly of the battery device 2, thereby improving the assembly efficiency of the energy storage device. In addition, when the battery device 2 needs to be repaired due to failure, the battery device 2 can be easily pulled out of the track of the bracket 11, thereby improving the repair efficiency of the battery device 2.

[0105] In addition, considering that there may be manufacturing errors, installation errors, structural deformations and the like of the bracket 11 or the edge 23 of the box, resulting in a certain gap between the edge 23 of the box and the track of the bracket 11 along the height direction Z, and the edge 23 of the box of the battery device 2 is easily shaken after being inserted into the track due to external force, which affects the stability of the battery device 2 on the bracket 11.

[0106] Therefore, in the embodiment of the present application, a support 3 is arranged between the edge 23 of the box of the battery device 2 and the limiting portion 112, the support 3 can be prearranged on the edge 23 of the box, and the limiting portion 112 is used to abut against the support 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1. Alternatively, the support 3 can be prearranged on the edge 23 of the box by welding. Since the support 3 is arranged on the edge 23 of the box of the battery device 2, it is convenient for the production process of the battery device 2 itself and convenient for manufacturing. In this way, the support 3 and the limiting portion 112 are pressed by local contact, which can increase the pressing force between the edge 23 of the box of the battery device 2 and the limiting portion 112, reduce the possibility of shaking of the battery device 2, and further improve the assembly stability of the battery device 2 on the bracket 11.

[0107] According to the energy storage device 1000 provided in the embodiment of the present application, the limiting portion 112 is arranged on the bracket 11, and the support 3 is prearranged on the edge 23 of the box of the battery device 2, and the limiting portion 112 is used to abut against the support 3 to limit the movement of the battery device 2 along the height direction of the cabinet 1. Therefore, the operator can push the battery device 2 into the bracket 11 outside the cabinet 1, which improves the assembly convenience of the battery device 2 and improves the stability of the battery device 2 on the bracket 11, thereby improving the assembly efficiency of the energy storage device 1000.

[0108] In some embodiments, the box comprises a shell 22 and a cover 21, the cover 21 and the shell 22 are buckled to form a closed chamber, a plurality of battery cells 20 are contained in the closed chamber, and the support 3 is installed at the edge of the shell 22 and / or the cover 21.

[0109] In one example, as shown in FIG. 2, the edge 23 of the box is a flange formed after the opening of the cover 21 and the opening of the shell 22 are buckled to each other; in another example, as shown in FIG. 3, the edge 23 of the box is only a flange formed at the opening of the cover 21 or only a flange formed at the opening of the shell 22. The support 3 is installed at the edge of the shell 22 and / or the cover 21, which facilitates the production process of the battery device itself, so that each component of the battery device 2 is simple in structure and easy to manufacture.

[0110] In some embodiments, the end of the support 3 away from the limiting portion 112 is embedded in the edge of the shell 22 and / or the cover 21. The end of the support 3 away from the limiting portion 112 is embedded in the edge of the shell 22 and / or the cover 21, which can reduce the overall height of the edge 23 of the box, and in turn reduce the height dimension of the bracket 11.

[0111] According to some embodiments of the present application, as shown in FIG. 8, the support 3 comprises a first portion 32 and a second portion 33 connected to each other, the second portion 33 is in abutting fit with the limiting portion 112, the first portion 32 is located at the end of the second portion 33 away from the limiting portion 112, and the cross-sectional area of the second portion 33 is greater than the cross-sectional area of the first portion 32.

[0112] The cross-sectional area of the second portion 33 refers to the area of the cross section of the second portion 33 perpendicular to the arrangement direction of the limiting portion 112 and the support 3 (in this embodiment, it can be referred to as the third direction Z). The cross-sectional area of the first portion 32 refers to the area of the cross section of the first portion 32 perpendicular to the arrangement direction of the limiting portion 112 and the support 3 (in this embodiment, it can be referred to as the third direction Z).

[0113] For example, the second portion 33 can be a substantially equal-diameter cylindrical structure, the first portion 32 can be a substantially equal-diameter cylindrical structure, the outer diameter of the second portion 33 is greater than the outer diameter of the first portion 32, and the inner diameter of the second portion 33 is greater than the inner diameter of the first portion 32.

[0114] It should be noted that in the case where the second portion 33 or the first portion 32 is provided as a non-equal-diameter structure, the cross-sectional area of the second portion 33 being greater than the cross-sectional area of the first portion 32 can be understood as the minimum cross-sectional area of the second portion 33 being greater than the maximum cross-sectional area of the first portion 32.

[0115] The second part 33 has a larger cross-sectional area, and has a larger supporting area, so that the second part 33 can be better abutted with the limiting part. The first part 32 has a smaller cross-sectional area, so that the weight of the supporting part 3 can be reduced, thereby reducing the weight of the battery device 2.

[0116] According to some embodiments of the present application, as shown in FIG. 8, the edge of the shell 22 and / or the edge of the cover 21 is provided with a mounting hole 231, a clamping groove 233 is formed on the hole wall of the mounting hole 231, and the first part 32 and part of the second part 33 are embedded in the mounting hole 231, and the second part 33 abuts against the clamping groove 233.

[0117] The mounting hole 231 is located in the area of the clamping groove 233 close to the limiting part 112 for accommodating part of the second part 33, and the mounting hole 231 is located in the area of the clamping groove 233 away from the limiting part 112 for accommodating the first part 32, wherein the hole diameter of the area accommodating the second part 33 is larger than the hole diameter of the area accommodating the first part 32.

[0118] By cooperating the second part 33 with the clamping groove 233, the mounting position of the supporting part 3 can be positioned, and meanwhile, the cooperation of the clamping groove 233 with the second part 33 can increase the supporting area of the supporting part 3, thereby increasing the supporting strength and the connection reliability of the supporting part 3 in the mounting hole 231.

[0119] FIG. 5 is a structural schematic view of FIG. 2 viewed in one direction, FIG. 6 is a structural schematic view of FIG. 2 viewed in another direction, FIG. 7 is a sectional view of FIG. 5 along direction A-A, FIG. 8 is an enlarged structural view of region C of FIG. 7, FIG. 9 is a sectional view of FIG. 6 along direction B-B, and FIG. 10 is an enlarged structural view of region D of FIG. 9. In some embodiments, the supporting part 3 is a cylindrical structural part.

[0120] As shown in FIG. 7 and FIG. 8, the edge 23 of the box body can be provided with a mounting hole 231, and one end of the supporting part 3 is embedded in the mounting hole 231 and is welded with the mounting hole 231, so that the connection strength between the edge 23 of the box body and the supporting part 3 can be improved. The mounting hole 231 can be a blind hole.

[0121] Optionally, the supporting part 3 can be a sleeve, which is hollow inside, has a lighter weight, and has sufficient structural strength and rigidity to meet the pressure bonding requirement between the limiting part 112 and the supporting part 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.

[0122] In some embodiments, the supporting part 3 is provided with a rounded corner 31 at one end close to the limiting part 112.

[0123] As shown in FIG. 8, the support 3 is provided with a rounded corner 31 at one end of the limiting portion 112, which can reduce the possibility of scratching when the support 3 contacts the limiting portion 112, and is conducive to smoothly pushing the battery device 2 into the bracket 11.

[0124] In some embodiments, the limiting portion 112 is provided with a guide portion 113 at the rear end in the pushing direction of the battery device 2, and the guide portion 113 is outwardly inclined in a direction away from the first plate 111a.

[0125] The pushing direction of the battery device 2 is the direction in which the battery device 2 is pushed into the bracket 11. As shown in FIG. 4, 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 in the pushing direction of the battery device 2, the position that is passed first is the rear, and the position that is passed last is the front. Referring to FIG. 4, the direction indicated by the arrow of the second direction Y is the direction from front to rear. Accordingly, the rear end of the limiting portion 112 in the pushing direction of the battery device 2 refers to the end of the limiting portion 112 that is passed first during the process of pushing the battery device 2 into the bracket 11 in the pushing direction of the battery device 2.

[0126] The limiting portion 112 is provided with a guide portion 113 at the rear end in the pushing direction of the battery device 2, and the guide portion 113 is outwardly inclined in a direction away from the first plate 111a. The guide portion 113 enlarges the entrance size of the bracket 11, which facilitates guiding the edge 23 of the box of the battery device 2 to be smoothly pushed into and positioned on the bracket 11, and further improves the assembly efficiency of the battery device 2.

[0127] In some embodiments, the energy storage device 1000 further comprises a buffer 12, which is arranged between the limiting portion 112 and the support 3.

[0128] Optionally, the buffer 12 is a foam, which can be attached to one side of the limiting portion 112 facing the support 3. The foam is a material foamed by plastic particles, and the material can be, for example but not limited to, polyurethane. The foam is elastic and light, and can fill the gap between the limiting portion 112 and the support 3. On the one hand, it can reduce the gap between the limiting portion 112 and the support 3 due to manufacturing errors, installation errors, structural deformation, etc., and increase the pressing force in the height direction between the edge 23 of the box and the bracket 11, so that the edge 23 of the box 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 of the battery device 2 directly scratching the limiting portion 112, and improve the service life of the bracket 11.

[0129] Optionally, the thickness of the buffer 12 is greater than the gap between the limiting portion 112 and the support 3. Here, the "thickness of the buffer 12" refers to the thickness of the buffer in the natural state before assembly, and when the buffer 12 is assembled between the limiting portion 112 and the support 3, the buffer 12 is adaptively thinned due to the pressure bonding by the limiting portion 112, so as to increase the pressure bonding 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.

[0130] According to some embodiments of the present application, the energy storage device 1000 further comprises a buffer 12 covering one side of the guiding portion 113 facing the support 3. When the limiting portion 112 is provided with a guiding portion 113 at the rear end in the pushing direction of the battery device 2, the length of the buffer 12 can be extended to the guiding portion 113, that is, the buffer 12 is also arranged between the guiding portion 113 and the support 3, which can reduce the possibility of the edge 23 of the box body of the battery device 2 colliding with the guiding portion 113, and improve the service life of the bracket 11.

[0131] In some embodiments, the number of limiting portions 112 is multiple, and the multiple limiting portions 112 are arranged in the pushing direction of the battery device 2; the number of supports 3 is multiple, and the positions of the multiple supports 3 correspond to the positions of the multiple limiting portions 112 one by one, and the distance between the multiple limiting portions 112 and the first plate 111a gradually decreases in the pushing direction of the battery device 2, and / or the surface of the support 3 connected with the edge 23 of the box body is the first surface 232, and the size of the multiple supports 3 protruding from the first surface 232 in the height direction gradually decreases in the pushing direction of the battery device 2.

[0132] When the support 3 is connected to the edge of the cover 21, the first surface 232 is the surface of the cover 21 connecting the support 3; when the support 3 is connected to the edge of the shell 22, the first surface 232 is the surface of the shell 22 connecting the support 3.

[0133] In the 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 facing the first plate 111a and the inner wall of the first plate 111a facing the limiting portion 112. As shown in FIGS. 2 and 6, 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, the five limiting portions 112 are arranged on the bracket 11 in the direction in which the battery device 2 is pushed in, 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 away from the outside of the cabinet 1 and located at the leftmost (frontmost) end and the first plate 111a is the smallest, and the distance d1 between the limiting portion 112 closest to the outside of the cabinet 1 (the rearmost end) and located at the rightmost end and the first plate 111a is the largest.

[0134] As shown in FIGS. 3 and 8, the buffer 12 is arranged between the limiting portion 112 and the support 3, the edge 23 of the case of the battery device 2 and the support 3 are accommodated between the first plate 111a and the limiting portion 112 of the bracket 11, the surface of the edge 23 of the case connected with the support 3 is the first surface 232, and the first surface 232 can be located at the edge of the cover 21 or the edge of the shell 22. One end of the support 3 is embedded in the first surface 232, and the other end is abutted to the buffer 12, and the size h of the support 3 protruding from the first surface 232 in the height direction.

[0135] As shown in FIG. 7, the five supports 3 are arranged on the edge 23 of the case in intervals, and in the direction in which the battery device 2 is pushed in, the size h of the five supports 3 protruding from the first surface 232 in the height direction gradually decreases, the size h of the support 3 closest to the outside of the cabinet 1 (the rearmost end) and located at the rightmost end protruding from the first surface 232 in the height direction is the largest, and the size h of the support 3 farthest away from the outside of the cabinet 1 (the frontmost end) and located at the leftmost end protruding from the first surface 232 in the height direction is the smallest, so that each support 3 can abut against the corresponding limiting portion 112. In this way, the battery device 2 can be smoothly pushed into the track of the bracket 11, and the battery device 2 can also be easily pulled out of the bracket 11 for maintenance.

[0136] It should be noted that when the distances between the multiple limiting portions 112 and the first plate 111a gradually decrease in the direction in which the battery device 2 is pushed in, the sizes of the multiple supports 3 protruding from the first surface 232 in the height direction can also not necessarily gradually decrease, or when the sizes of the multiple supports 3 protruding from the first surface 232 in the height direction gradually decrease, the distances between the multiple limiting portions 112 and the first plate 111a can also not necessarily gradually decrease, as long as the edge 23 of the case of the battery device 2 can be smoothly pushed into or pulled out of the track of the bracket 11.

[0137] Optionally, the distance between the plurality of limiting portions 112 and the first plate 111a decreases in an arithmetic progression along the pushing direction of the battery device 2, and / or the size of the plurality of supporting members 3 protruding from the first surface 232 in the height direction decreases in an arithmetic progression.

[0138] Still taking the example that the bracket 11 has five limiting portions 112, the distance between the five limiting portions 112 and the first plate 111a is different, and the distance decreases in an arithmetic progression along the pushing direction of the battery device 2. Correspondingly, the size of the five supporting members 3 protruding from the first surface 232 in the height direction decreases in an arithmetic progression. Specifically, the limiting portion 112 located at the rightmost side in FIGS. 2 and 6 is the first limiting portion adjacent to the outside of the cabinet 1. Starting from the second limiting portion, the difference between the distance corresponding to each limiting portion and the distance corresponding to the previous limiting portion is equal.

[0139] Correspondingly, the supporting member 3 located at the rightmost side in FIG. 7 is the first supporting member adjacent to the outside of the cabinet 1. Starting from the second supporting member, the difference between the size of each supporting member 3 protruding from the first surface 232 in the height direction and the size of the previous supporting member 3 protruding from the first surface 232 in the height direction is equal. The design that the distance between the plurality of limiting portions 112 and the first plate 111a decreases in an arithmetic progression and the design that the size of the plurality of supporting members 3 protruding from the first surface 232 in the height direction decreases in an arithmetic progression are beneficial to smoothly push or pull the edge 23 of the box of the battery device 2 into or out of the track of the bracket 11, and reduce the possibility that the battery device 2 is stuck during disassembly.

[0140] It should be noted that when the distance between the plurality of limiting portions 112 and the first plate 111a decreases in an arithmetic progression along the pushing direction of the battery device 2, the height of the plurality of supporting members 3 protruding from the first surface 232 can also decrease in a non-arithmetic progression, or when the height of the plurality of supporting members 3 protruding from the first surface 232 decreases in an arithmetic progression, the distance between the plurality of limiting portions 112 and the first plate 111a can also decrease in a non-arithmetic progression, as long as it does not affect the smooth pushing or pulling of the edge 23 of the box of the battery device 2 into or out of the bracket 11.

[0141] It can be understood that when the limiting portion 112 is provided with the guide portion 113 at the rear end in the pushing direction of the battery device 2, when the distance between the plurality of limiting portions 112 and the first plate 111a decreases in an arithmetic progression in the pushing direction of the battery device 2, the size of the plurality of guide portions 113 also decreases in an arithmetic progression, which is beneficial to gradually guide the edge 23 of the box of the battery device 2 to be pushed into the track of the bracket 11.

[0142] In some embodiments, the second plate 111b of the bracket 11 is provided with a protrusion 111c on the side facing the battery device 2. As shown in FIG. 6, FIG. 9 and FIG. 10, the protrusion 111c is in a strip-shaped structure, and the protrusion 111c is protrudingly provided on the second plate 111b and facing the battery device 2. The protrusion 111c can reduce the gap between the edge 23 of the box of the battery device 2 and the second plate 111b of the bracket 11, increase the friction therebetween, and reduce the possibility of the battery device 2 deviating during the process of being pushed into or pulled out of the bracket 11.

[0143] Optionally, the protrusion 111c is formed by punching on the second plate 111b and facing the battery device 2. The bracket 11 can be made of a galvanized steel plate, which has good strength and corrosion resistance. The protrusion 111c can be formed by punching on the second plate 111b of the bracket 11. From the outside of the second plate 111b facing away from the battery device 2, the protrusion 111c is recessedly provided on the second plate 111b and facing the battery device 2. Meanwhile, from the inside of the second plate 111b facing the battery device 2, the protrusion 111c is protrudingly provided on the second plate 111b. The manufacturing process is simple, which is conducive to mass production.

[0144] Optionally, the number of the protrusions 111c is multiple, and the multiple protrusions 111c are arranged at intervals along the pushing direction of the battery device 2. Along the pushing direction of the battery device 2, the size of the protrusions 111c protruding from the second plate 111b gradually increases.

[0145] As shown in FIG. 6, 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 protrusions 111c, and the three protrusions 111c are arranged at intervals along the pushing direction of the battery device 2. As shown in FIG. 10, the size of the protrusion 111c protruding from the second plate 111b is t, and along the pushing direction of the battery device 2, the size t of the three protrusions 111c protruding from the second plate 111b gradually increases. Taking the second plate 111b provided with three protrusions 111c in FIG. 6 as an example, the size of the protrusion 111c closest to the outside of the cabinet 1 and located at the rightmost side of the figure protruding from the second plate 111b is the largest, and the size of the protrusion 111c farthest from the outside of the cabinet 1 (the front end) and located at the leftmost side of the figure protruding from the second plate 111b is the smallest. Such arrangement is conducive to smoothly pushing the edge 23 of the box of the battery device 2 into the track of the bracket 11, and also facilitates pulling the battery device 2 out of the bracket 11 for maintenance.

[0146] Optionally, along the pushing direction of the battery device 2, the size of the multiple protrusions 111c protruding from the second plate 111b increases in an arithmetic progression.

[0147] Specifically, still taking the second plate 111b provided with three protrusions 111c as an example, as shown in FIG. 6, taking the protrusion 111c adjacent to the outer side of the cabinet 1 and located at the rightmost side in the figure as the first protrusion, then from the second protrusion, the size of each protrusion protruding relative to the second plate 111b is the same as the difference between the size of the previous protrusion protruding relative to the second plate 111b. Along the pushing direction of the battery device 2, the sizes of the plurality of protrusions protruding relative to the second plate 111b are in equal difference increments, which is conducive to smoothly pushing or pulling the edge 23 of the box into the track of the bracket 11, and reduces the possibility of the battery device 2 deviating during disassembly.

[0148] In some embodiments, the second plate 111b is provided with a reinforcing portion 111d at the intersection with the first plate 111a. The reinforcing portion 111d can improve the structural strength and rigidity of the bracket 11, and reduce the possibility of deformation of the bracket 11.

[0149] 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.

[0150] As shown in FIG. 2, the reinforcing portion 111d can be formed at the intersection of the second plate 111b and the first plate 111a by a stamping process, which is simple in manufacturing process and suitable for mass production.

[0151] In some embodiments, the first plate 111a of the bracket 11 is further provided with a fixing portion 114 at the rear end along the pushing direction of the battery device 2, and the bracket 11 is fixedly connected with the edge 23 of the box through the fixing portion 114.

[0152] As shown in FIG. 2, FIG. 5 and FIG. 6, the rear end of the first plate 111a along the pushing direction of the battery device 2 is the end of the first plate 111a that is first passed through when the battery device 2 is pushed into the bracket 11 along the pushing direction, and it is also the end of the bracket 11 towards the outside of the cabinet 1. The fixing portion 114 is arranged at the end of the bracket 11 towards the outside of the cabinet 1, and the edge 23 of the box of the battery device 2 is correspondingly provided with an adapter, the adapter is provided with a plurality of through holes, and the fixing portion 114 is correspondingly provided with a plurality of nuts, so that the operator can pass the bolts through the through holes and threadedly connect them with the nuts outside the cabinet 1, thereby fixing the bracket 11 with the edge 23 of the box, and further improving the assembly stability of the battery device 2.

[0153] FIG. 11 is an assembly schematic view of the cabinet and the bracket provided by some embodiments of the present application.

[0154] Referring to FIG. 11, in some embodiments, the cabinet 1 comprises a frame 10 and a shell 102 covering the frame 10, the frame 10 comprises a plurality of columns 101 which 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 on the columns 101 and spaced along the height direction, the clamping portions 103 can be grooves formed on the columns 101 or protruding steps formed on the columns 101, and a plurality of pairs of brackets 11 are connected with 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 shell 102 is used to isolate the inside of the cabinet 1 from the external environment, and the shell 102 is arranged outside 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 debris, water, etc. falling on the battery devices 2.

[0155] In one example, the manufacturing process of the energy storage device 1000 can be as follows: first, surround the plurality of columns 101 to form the frame 10, then assemble the frame 10 with the shell 102, then connect the plurality of pairs of brackets 11 with the clamping portions 103 of the frame 10 correspondingly, complete the assembly of the cabinet 1, and finally push the plurality of battery devices 2 into the tracks of the corresponding brackets 11 one by one.

[0156] 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 the plurality of pairs of brackets 11 with the clamping portions 103 of the columns 101 to form a plurality of trapezoidal frames respectively, then manufacture the plurality of trapezoidal frames in sequence, then arrange two trapezoidal frames opposite to each other along the first direction X, then arrange the plurality of trapezoidal frames along the first direction X in sequence, then assemble the shell 102 with the columns 101, complete the assembly of the cabinet 1, and finally push the plurality of battery devices 2 into the tracks of the corresponding brackets 11 one by one.

[0157] Referring to FIGS. 1-11, the embodiment provides an energy storage device 1000, which comprises a cabinet body 1 with a battery compartment, a plurality of battery devices 2 arranged in the battery compartment, a column 101, and a plurality of brackets 11 connected to the column 101. The cabinet body 1 comprises a battery compartment, and the plurality of battery devices 2 are arranged in the battery compartment, and each battery device 2 comprises a box body and a plurality of battery monomers 20 contained in the box body. The column 101 is connected to the top wall and the bottom wall of the cabinet body 1, and the plurality of brackets 11 are connected to the column 101 along the height direction of the cabinet body 1, and the battery device 2 is arranged between the two opposite brackets 11 in a push-pull manner through the edge 23 of the box body. The bracket 11 comprises a first plate 111a, a second plate 111b and a limiting part 112 connected in sequence, the first plate 111a is used to support the battery device 2, and the limiting part 112 is connected to one end of the second plate 111b away from the first plate 111a; wherein the battery device 2 further comprises a support 3 connected to the edge 23 of the box body, and the limiting part 112 is used to press the support 3 to limit the movement of the battery device 2 along the height direction of the cabinet body 1. By arranging the limiting part 112 on the bracket 11, and pre-arranging the support 3 on the edge 23 of the box body of the battery device 2, the limiting part 112 is used to press the support 3 to limit the movement of the battery device 2 along the height direction of the cabinet body 1, so that the operator can push the battery device 2 into the bracket 11 and position it on the bracket 11 outside the cabinet body 1, thereby improving the assembly convenience of the battery device, improving 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 comprises a buffer 12 arranged between the limiting part 112 and the support 3, and the thickness of the buffer 12 is greater than the gap between the limiting part 112 and the support 3, thereby increasing the pressing force between the battery device 2 and the bracket 11 along the height direction. A plurality of limiting parts 112 are arranged on the bracket 11 along the pushing direction of the battery device 2, a plurality of supports 3 are arranged corresponding to the positions of the plurality of limiting parts 112, along the pushing direction of the battery device 2, the distance between the plurality of limiting parts 112 and the first plate 111a decreases in an arithmetic progression, and the size of the plurality of supports 3 protruding from the edge 23 of the box body along the height direction decreases in an arithmetic progression, which is conducive to smoothly pushing or pulling the battery device 2 into or out of the track of the bracket 11, and reduces the possibility of the battery device 2 being stuck during disassembly. In addition, the second plate 111b of the bracket 11 is provided with a plurality of convex parts 111c on the side facing the battery device 2, the plurality of convex parts 111c are arranged along the pushing direction of the battery device 2, and the size of the plurality of convex parts 111c protruding from the second plate 111b along the pushing direction of the battery device 2 increases in an arithmetic progression, which is conducive to smoothly pushing or pulling the edge 23 of the box body into or out of the track of the bracket 11, and reduces the possibility of the battery device 2 being offset during disassembly.

[0158] Please refer to FIG. 12, which is a structural schematic diagram of a charging network 4000 provided by some embodiments of the present application. The embodiments of the present application provide a charging network 4000, which includes a charging pile 300, the charging pile 300 being configured to charge an electrical equipment. The charging network 4000 can further include an energy storage device 200, the energy storage device 200 being electrically connected to the charging pile 300, and the energy storage device 200 being configured to provide electrical energy for the charging pile 300.

[0159] It should be noted that the energy storage device 200 can be any energy storage device 200 provided by the present application or any embodiments of the present application. The charging pile 300 is electrically connected to the battery cell in the energy storage device 200 through a cable, and the battery cell can provide the electrical energy stored by itself to the charging pile 300. The charging pile 300 has a connector, which can be connected to the electrical equipment, so as to charge the electrical equipment. The charging network 4000 applies the energy storage device 200, which can effectively improve the safety of the charging network 4000, and also helps to improve the flexibility of the charging network 4000 when deployed.

[0160] In one charging network 4000, the charging pile 300 can be one, and the energy storage device 200 provides electrical energy for the charging pile 300; the charging pile 300 can also be multiple, and the energy storage device 200 provides electrical energy for multiple charging piles 300.

[0161] As an example, as shown in FIG. 12, the charging network 4000 includes one energy storage device 200 and two charging piles 300, and one energy storage device 200 provides electrical energy for the two charging piles 300.

[0162] The energy storage device 200 can include a battery device 2, which is electrically connected to the charging pile 300, so as to provide electrical energy for the charging pile 300.

[0163] Please refer to FIG. 13, which is a structural schematic diagram of an energy storage system 2000 provided by some embodiments of the present application. The embodiments of the present application provide an energy storage system 2000. The energy storage system 2000 includes an energy storage converter 400, which can be electrically connected to a power generation device 3000, so as to convert the electrical power provided by the power generation device 3000. The energy storage system 2000 can further include an energy storage device 200, which is electrically connected to the energy storage converter 400, and the energy storage converter 400 converts the electrical energy provided by the power generation device 3000 and then introduces the converted electrical energy into the energy storage device 200 for storage.

[0164] The energy storage converter 400 can be a power conversion device, which is connected between the power generation device 3000 and the energy storage device 200. The power generation device 3000 is used to generate electric energy, and the power generation device 3000 is used to store the generated electric energy into the energy storage device 200 through the energy storage converter 400. The energy storage system 2000 applies the energy storage device 200, which can effectively improve the operation safety of the energy storage system 2000. In specific implementation, the power generation equipment can be a solar panel, a hydroelectric power generation equipment, a thermal power generation equipment, etc. The specific type of the power generation equipment is not limited in the present application.

[0165] As an example, as shown in FIG. 13, the energy storage system 2000 includes the energy storage device 200 and the energy storage converter 400, and two power generation devices 3000 respectively transmit the generated electric energy to the energy storage converter 400, and the electric energy is introduced into the energy storage device 200 through the energy storage converter 400 for storage.

[0166] Please refer to FIG. 1, the energy storage device 200 includes a cabinet 1 (i.e. an energy storage box), and the cabinet 1 is provided with a battery device 2.

[0167] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0168] As an example, the energy storage device 200 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 power station can store electric energy during the low electricity consumption period, and provide electric energy for related users or power equipment during the peak electricity consumption period. The wind power generator set of the wind power generation system collects wind energy and converts it into electric energy, which is stored by the energy storage device 200. The solar power generation system can convert solar energy into electric energy, which is stored by the energy storage device 200, and is supplied to users in time. The mobile power system can supply power to related power equipment in places where the power grid power supply system cannot reach, such as remote mountainous areas, remote wild areas, etc. The temporary power supply system can supply power to users in the case of insufficient power supply.

[0169] The above description of various embodiments tends to emphasize the differences between various embodiments, and the same or similar parts can be referred to each other, and for the sake of brevity, the details are not described herein.

[0170] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, wherein, The energy storage device comprises: a cabinet body comprising a battery compartment; a plurality of battery devices arranged in the battery compartment, each battery device comprising a box body and a plurality of battery cells accommodated in the box body; a stand connected to a top wall and a bottom wall of the cabinet body; and a plurality of pairs of brackets sequentially connected to the stand along a height direction of the cabinet body, each battery device being lapped on a pair of brackets through an edge of the box body, each bracket comprising a first plate, a second plate and a limiting portion sequentially connected, the first plate being used for supporting the battery device, and the limiting portion being connected to an end of the second plate away from the first plate. The battery device further comprises a support connected to the edge of the box body, and the limiting portion is used for pressing the support to limit the movement of the battery device along the height direction of the cabinet body.

2. The energy storage device of claim 1, wherein, The box body comprises a shell and a cover, the cover is buckled with the shell to form a closed cavity, a plurality of battery cells are accommodated in the closed cavity, and the support is mounted on the edge of the shell and / or the edge of the cover.

3. The energy storage device of claim 2, wherein, An end of the support away from the limiting portion is embedded in the edge of the shell and / or the edge of the cover.

4. The energy storage device of claim 3, wherein, The support comprises a first portion and a second portion connected to each other, the second portion is in pressing cooperation with the limiting portion, the first portion is located at an end of the second portion away from the limiting portion, and the cross-sectional area of the second portion is greater than that of the first portion.

5. The energy storage device of claim 4, wherein, The edge of the shell and / or the edge of the cover is provided with a mounting hole, a hole wall of the mounting hole is formed with a clamping groove, and the first portion and part of the second portion are embedded in the mounting hole, and the second portion is abutted against the clamping groove.

6. The energy storage device of any one of claims 1-5, wherein, The support is a cylindrical structure.

7. The energy storage device of claim 6, wherein, An end of the support towards the limiting portion is provided with a rounded corner.

8. The energy storage device of any one of claims 1-7, wherein, A rear end of the limiting portion along a pushing direction of the battery device is provided with a guide portion, and the guide portion is outwardly inclined in a direction away from the first plate.

9. The energy storage device of any one of claims 1-8, wherein, The energy storage device further comprises a buffer arranged between the limiting portion and the support.

10. The energy storage device of claim 9, wherein, The thickness of the buffer is greater than the gap between the limiting portion and the support.

11. The energy storage device of claim 8, wherein, The energy storage device further comprises a buffer covering one side of the guide portion towards the support.

12. The energy storage device of any one of claims 1 to 11, wherein, The number of the limiting portions is multiple, and the multiple limiting portions are arranged on the second plate in a spaced manner along the pushing direction of the battery device. The number of the supports is multiple, and the positions of the multiple supports correspond to the positions of the multiple limiting portions one by one, the distance between the multiple limiting portions and the first plate gradually decreases along the pushing direction of the battery device, and / or the surface of the edge of the box body connected with the support is a first surface, and the size of the multiple supports protruding from the first surface along the height direction gradually decreases along the pushing direction of the battery device.

13. The energy storage device of claim 12, wherein, The distance between the multiple limiting portions and the first plate decreases in an arithmetic progression along the pushing direction of the battery device. And / or, the size of the multiple supports protruding from the first surface along the height direction decreases in an arithmetic progression along the pushing direction of the battery device.

14. The energy storage device of any one of claims 1 to 13, wherein, The second plate is provided with a protrusion on the side facing the battery device.

15. The energy storage device of claim 14, wherein, The number of the protrusions is multiple, and the multiple protrusions are arranged at intervals along the insertion direction of the battery device, and the protrusion size of the multiple protrusions gradually increases relative to the second plate along the insertion direction of the battery device.

16. The energy storage device of claim 15, wherein, The protrusion size of the multiple protrusions gradually increases relative to the second plate along the insertion direction of the battery device.

17. The energy storage device of any one of claims 1 to 16, wherein, The intersection of the second plate and the first plate is provided with a reinforcing portion.

18. The energy storage device of claim 17, wherein, The reinforcing portion is recessed from the intersection of the second plate and the first plate towards the battery device.

19. The energy storage device of any one of claims 1 to 18, wherein, The first plate is further provided with a fixing portion at the rear end along the insertion direction of the battery device, and the bracket is fixedly connected with the edge of the box through the fixing portion.

20. An energy storage system, wherein, The energy storage system comprises the energy storage device according to any one of claims 1-19; An energy storage converter is electrically connected with the energy storage device, and the energy storage converter is used for guiding the power provided by the power generation device into the energy storage device for storage after power conversion.

21. A charging network, wherein, The charging network comprises: A charging pile; The energy storage device according to any one of claims 1-19 or the energy storage system according to claim 20, wherein the energy storage device is electrically connected with the charging pile, and is used for providing the charging pile with power.

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