Energy storage device

Abstract

The utility model relates to the technical field of battery related equipment, and discloses an energy storage device which comprises a bracket, a battery and a fixing assembly, the battery is arranged on the bracket, and the battery is provided with a box body; the fixing assembly comprises a fixing piece, the fixing piece comprises a first plate body, a second plate body and a third plate body which are sequentially connected at an angle, the first plate body is connected with the box body, and the third plate body is connected with the bracket. Compared with a flat plate connecting piece, the first plate body, the second plate body and the third plate body which are connected in an angle mode have high strength and deformation resistance, in the transportation process of the energy storage device, when a battery vibrates or moves and impacts the fixing piece, the fixing piece is not prone to deformation or damage, the fixing stability of the battery on the bracket is improved, and the service life of the battery is prolonged. And the possibility of battery fixing failure is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery-related equipment, and in particular to an energy storage device. Background Art

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] As the demand for clean energy increases, energy storage devices have been widely developed. Energy storage devices include a cabinet and multiple batteries installed in the cabinet. After the energy storage device is assembled, it needs to be transported to a designated location for use. During the transportation of energy storage devices, the batteries are prone to failure due to impacts such as vibration and movement, resulting in reduced stability of the batteries in the cabinet, which may cause damage to the batteries or the cabinet. How to improve the stability of battery fixation in energy storage devices has always been a problem of continuous concern during the research and development of energy storage devices. Utility Model Content

[0004] In view of the above problems, the present application provides an energy storage device to at least alleviate the problem that the batteries of the energy storage device are prone to fixation failure.

[0005] The first aspect of the present application proposes an energy storage device, comprising a bracket, a battery and a fixing assembly; the battery is arranged on the bracket, and the battery has a box body; the fixing assembly includes a fixing member, and the fixing member includes a first plate body, a second plate body and a third plate body connected in sequence at an angle, the first plate body is connected to the box body, and the third plate body is connected to the bracket.

[0006] In the technical solution of the embodiment of the present application, the battery is connected to the bracket through a fixing assembly, and the fixing part of the fixing assembly includes a first plate, a second plate and a third plate connected in sequence at an angle, the first plate is connected to the battery, and the third plate is connected to the bracket. The first plate, the second plate and the third plate connected at an angle have higher strength and deformation resistance than the flat plate connecting part. When the battery vibrates or moves during the transportation of the energy storage device and impacts the fixing part, the fixing part is not easily deformed or damaged, thereby improving the fixing stability of the battery on the bracket and reducing the possibility of battery fixation failure.

[0007] In some embodiments of the present application, the first plate and the third plate are respectively connected to opposite sides of the second plate. In this embodiment, the first plate and the third plate are arranged on opposite sides of the second plate, which can improve the strength of the fixing member, and can make the connection operation between the first plate and the battery and the connection operation between the third plate and the bracket less likely to interfere with each other, thereby improving the assembly convenience of the fixing member.

[0008] In some embodiments of the present application, the second plate body extends along a first direction, the first plate body and the third plate body are respectively disposed at two ends of the second plate body along the first direction, the first plate body and the third plate body both extend along a second direction, the first direction is the length direction or the width direction of the bracket, and the second direction is the height direction of the bracket. The first plate body and the third plate body being located at two ends of the second plate body along the first direction can prevent the connection operation between the first plate body and the battery and the connection operation between the third plate body and the bracket from interfering with each other, improving the assembly convenience of the fixing member; meanwhile, the first plate body and the third plate body are arranged at intervals in the first direction. In this way, the connection positions between the first plate body and the box body and between the third plate body and the bracket are offset in the second direction. During the vibration of the battery, the possibility that these two connection positions are in a straight line and easily lead to connection failure can be reduced.

[0009] In some embodiments of the present application, the first plate body, the second plate body and the third plate body are of an integral structure. The integral structure of the first plate body, the second plate body and the third plate body makes the fixing member have a relatively high structural strength. During the transportation of the energy storage device, when the battery vibrates or moves and impacts the fixing member, the fixing member is not easily deformed or damaged, improving the fixing stability of the battery on the bracket and reducing the possibility of battery fixing failure.

[0010] In some embodiments of the present application, the fixing assembly further includes a first fastener and a second fastener. The first plate body is connected to the box body through the first fastener, and the third plate body is connected to the bracket through the second fastener. The first plate body is connected to the box body of the battery through the first fastener, and the third plate body is connected to the bracket through the second fastener, which is not only convenient for operation, but also the first plate body can be separated from the battery by removing the first fastener, and the second plate body can be separated from the bracket by removing the second fastener. In this way, the fixing member can be removed to facilitate the replacement or repair of the battery.

[0011] In some embodiments of the present application, a first fixing hole is provided on the first plate body, and a first connection hole is provided on the box body. The first fastener passes through the first fixing hole and the first connection hole. By providing holes on the first plate body and the box body as structures cooperating with the first fastener, the assembly operation of the first fastener is simple, and the structure of the fixing assembly is simple.

[0012] In some embodiments of the present application, the number of the first fasteners, the number of the first fixing holes and the number of the first connection holes are all multiple, and each first fastener correspondingly passes through one first fixing hole and one first connection hole. In this embodiment, multiple first fasteners are provided, which can improve the connection stability between the fixing member and the battery.

[0013] In some embodiments of the present application, the third plate is provided with a second fixing hole, the bracket is provided with a second connecting hole, and the second fastener is passed through the second fixing hole and the second connecting hole. In this embodiment, the holes provided on the third plate and the bracket serve as structures for cooperating with the second fastener, so the assembly operation of the second fastener is simple, and the structure of the fixing assembly is simple.

[0014] In some embodiments of the present application, the number of the second fasteners, the number of the second fixing holes, and the number of the second connecting holes are all multiple, and each second fastener is correspondingly inserted into one second fixing hole and one second connecting hole. By providing multiple second fasteners, the connection stability between the fixing member and the bracket can be improved.

[0015] In some embodiments of the present application, any one of the second fixing holes passes through opposite sides of the third plate body along the first direction, and at least two of the plurality of second fixing holes are staggered along the second direction, the first direction is the length direction or width direction of the bracket, and the second direction is the height direction of the bracket. The second fixing holes are staggered in the height direction, and during the vibration of the battery, since the two second fasteners are not on the same straight line in the height direction, the second fasteners are not easy to loosen. For example, when the second fastener is a bolt assembly, during the vibration of the battery, the bolt assembly is not easy to twist back and fall off, thereby improving the fixing stability of the battery.

[0016] In some embodiments of the present application, the first plate is provided with a plurality of first fixing holes, the box is provided with a plurality of first connecting holes, and the plurality of first fasteners are respectively provided through one of the first fixing holes and one of the first connecting holes, and the arrangement direction of at least two of the first fixing holes intersects with the arrangement direction of at least two of the second fixing holes. By intersecting the arrangement direction of the first fixing holes with the arrangement direction of the second fixing holes, the fixing member is fixed in two intersecting directions, thereby reducing the possibility of the fixing member loosening in the intersecting direction.

[0017] In some embodiments of the present application, the bracket has a first end and a second end opposite to each other along a first direction, and along the first direction, part of the battery protrudes in a direction away from the second end relative to the first end, the first plate is connected to the protruding portion of the battery relative to the first end, the second plate is arranged on the bottom side of the protruding portion of the battery relative to the first end, the third plate is connected to the first end of the bracket, and the first direction is the length direction or width direction of the bracket. In this embodiment, the fixing member is connected to the part of the battery protruding from the bracket, which can better support and fix the battery.

[0018] In some embodiments of the present application, the bracket includes a limiting portion, a supporting portion and a connecting portion, the limiting portion and the supporting portion both extend along a first direction, along a second direction, the limiting portion and the connecting portion are arranged on opposite sides of the supporting portion, and along the second direction, the battery is arranged on a side of the supporting portion facing the limiting portion, along a third direction, the battery is located on a side of the limiting portion, the third plate is connected to the connecting portion, one of the first direction and the third direction is the width direction of the bracket, the other is the length direction of the bracket, and the second direction is the height direction of the bracket. The connecting portion is arranged on a side of the supporting portion away from the battery along the second direction, that is, arranged on the lower side of the supporting portion, and the connecting portion is not easy to interfere with the battery, which is conducive to the reasonable arrangement of components and improves the convenience of assembly of the fixing part, the battery and the bracket.

[0019] In some embodiments of the present application, the bracket includes a first bracket and a second bracket, the first bracket and the second bracket both include the limiting portion, the supporting portion and the connecting portion, the first bracket and the second bracket both extend along the first direction, and the first bracket and the second bracket are arranged in sequence along the third direction, the limiting portion of the first bracket is arranged opposite to the limiting portion of the second bracket, the battery is arranged on the supporting portion of the first bracket and the supporting portion of the second bracket, and is located between the limiting portion of the first bracket and the limiting portion of the second bracket, and the connecting portion of the first bracket and the connecting portion of the second bracket are respectively connected to the box body through at least one of the fixing components. The first bracket and the second bracket are both connected with fixing components, so that the battery can be connected and fixed at multiple positions, thereby improving the stability of the connection between the battery and the bracket.

[0020] In some embodiments of the present application, along the third direction, the side where the connecting portion of the first bracket and the connecting portion of the second bracket face each other is a first side edge, the first side edge is tilted, and from the end connected to the supporting portion to the end away from the supporting portion along the second direction, the two first side edges are gradually disposed away from each other in the third direction. The connecting portion of the first bracket and the connecting portion of the second bracket are tilted, which can reserve more space for the assembly of the lower battery and reduce the possibility of the lower battery being affected by the connecting portion when being pushed into the bracket.

[0021] In some embodiments of the present application, along the second direction, at least one of the end of the limiting portion of the first bracket away from the supporting portion and the end of the limiting portion of the second bracket away from the supporting portion is provided with a pressing portion; the box body is provided with a protruding portion, and along the second direction, the protruding portion abuts against a side of the pressing portion facing the supporting portion. The pressing portion cooperates with the protruding portion to limit the upward displacement of the battery along the height direction, thereby improving the setting stability of the battery.

[0022] In some embodiments of the present application, the energy storage device further comprises a cabinet, an opening is provided at one end of the cabinet along a first direction, the bracket is provided in the cabinet, the battery and the bracket are connected to a fixing assembly at one end facing the opening, and the first direction is the length direction or width direction of the bracket. The fixing assembly is connected to the battery and the bracket at one end facing the opening, that is, the fixing assembly is connected to the push-in end of the bracket corresponding to the battery, the fixing assembly can limit the movement of the battery at the push-in end of the battery, and the fixing assembly is assembled on the opening side of the cabinet, which is convenient for operation.

[0023] In some embodiments of the present application, a stopper is provided at one end of the bracket away from the opening along the first direction, and the battery is located on the side of the stopper facing the opening. The stopper can limit the movement of the battery away from the opening along the first direction, and at the same time, in the process of pushing the battery to the bracket along the first direction, the stopper also serves as a positioning member, and when the battery abuts against the stopper, it can be considered that the battery is pushed into place.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of an energy storage device provided in some embodiments of the present application;

[0027] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application;

[0028] Figure 3 An exploded schematic diagram of a battery cell provided in some embodiments of the present application;

[0029] Figure 4 An assembly diagram of a bracket and a battery provided in some embodiments of the present application;

[0030] Figure 5 for Figure 4 A magnified view of part A;

[0031] Figure 6 for Figure 5 An exploded schematic diagram of the structure shown;

[0032] Figure 7 A structural diagram of a fixing member provided for some embodiments of the present application;

[0033] Figure 8 This is a schematic diagram of a first bracket according to some embodiments of the present application.

[0034] The reference numerals in the specific implementation manner are as follows:

[0035] 1000. Energy storage device;

[0036] 100, battery; 110, housing; 111, first part; 112, second part; 113, protrusion; 114, first connection hole; 120, battery cell; 121, end cover; 122, electrode terminal; 123, pressure relief assembly; 124, housing; 125, battery cell assembly; 126, pole ear;

[0037] 200, cabinet; 201, opening;

[0038] 300, bracket; 301, supporting portion; 302, limiting portion; 303, connecting portion; 304, second connecting hole; 305, pressing portion; 306, guiding portion; 307, guide plate; 308, stopper; 309, first side; 310, first bracket; 320, second bracket; 330, first support frame; 340, second support frame;

[0039] 400, fixing assembly; 410, fixing member; 411, first plate; 412, second plate; 413, third plate; 414, first fixing hole; 415, second fixing hole; 420, first fastener; 430, second fastener;

[0040] X, first direction; Z, second direction; Y, third direction. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0043] 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] 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, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of 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 the specific circumstances.

[0049] Batteries can store electrical energy and supply power to electrical devices. With the development of new energy sources, the use of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the increase in the demand for electrical energy storage and use, energy storage devices with batteries are gradually being widely used due to their advantages such as large electrical energy storage capacity.

[0050] The energy storage device includes a cabinet and a battery. The number of batteries is usually multiple. A bracket is arranged in the cabinet, and the battery code is arranged on the bracket. The cabinet of the energy storage device has an opening. During the assembly process of the energy storage device, the battery can be placed on the bracket through the opening of the cabinet. After the battery is placed on the bracket, in order to improve the placement stability of the battery on the bracket, the battery and the bracket can be connected through a flat connector. Specifically, one end of the flat connector is connected to the battery through a bolt, and the other end of the flat connector is connected to the bracket through another bolt, so as to fix the battery and the bracket.

[0051] During the transportation of the energy storage device in the above technology, it is found that the fixation stability of the battery in the cabinet is low, which is easy to cause problems such as battery or cabinet damage. After research, it is found that during the transportation of the battery, the vibration and movement of the battery will cause the battery to impact the flat connector, causing the flat connector to deform or damage, which in turn causes the battery fixation to fail, causing damage to the battery or cabinet.

[0052] In order to alleviate the problem of fixation failure of batteries in energy storage devices during transportation, the present application proposes an energy storage device, including a bracket, a battery and a fixing assembly, the fixing assembly includes a fixing member, the fixing member includes a first plate, a second plate and a third plate connected in sequence at an angle, the first plate is connected to the battery, and the third plate is connected to the bracket.

[0053] The first plate body, the second plate body and the third plate body connected at an angle have higher strength and deformation resistance than the flat plate connecting piece. When the battery vibrates or moves and impacts the fixing piece during the transportation of the energy storage device, the fixing piece is not easily deformed or damaged, thereby improving the fixing stability of the battery on the bracket and reducing the possibility of battery fixing failure.

[0054] The energy storage device of the present application or the embodiment of the present application can be applied to an energy storage power station or an electrical device to supply power to the electrical device. This embodiment is mainly described by taking the application of the energy storage device to an energy storage power station as an example.

[0055] Please refer to Figure 1 As shown, Figure 1 This is a schematic diagram of an energy storage device provided in some embodiments of the present application. The energy storage device 1000 includes a cabinet 200 and a battery 100 . A bracket 300 is disposed in the cabinet 200 . The battery 100 is disposed in the cabinet 200 and on the bracket 300 .

[0056] The shape of the cabinet 200 can be set as needed. An opening 201 is set on one side of the cabinet 200 to facilitate assembly and maintenance of the battery 100. A door body that can be opened and closed can be set at the opening 201, or a door body can be not set. The bracket 300 is connected to the cabinet 200, and can be an integral structure with the cabinet 200, or fixedly connected by bolts or the like.

[0057] There may be multiple batteries 100 in the cabinet 200 . Multiple rows of batteries 100 may be arranged horizontally in the cabinet 200 , or one row of batteries 100 may be arranged. Each row of batteries 100 may be stacked on the bracket 300 from top to bottom in the cabinet 200 .

[0058] Please refer to Figure 2 , Figure 2The present invention provides a schematic diagram of an exploded view of a battery provided in some embodiments of the present invention. The battery 100 includes a box body 110 and a battery cell 120, and the battery cell 120 is contained in the box body 110. The box body 110 is used to provide a storage space for the battery cell 120, and the box body 110 can adopt a variety of structures. In some embodiments, the box body 110 may include a first part 111 and a second part 112, and the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 120. The second part 112 may be a hollow structure with one end open, and the first part 111 may be a plate-like structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 may also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0059] In the battery 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 120 are both connected in series and in parallel. The multiple battery cells 120 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 120 is accommodated in the box 110; of course, the battery 100 may also be a battery 100 module formed by connecting multiple battery cells 120 in series, in parallel, or in a mixed connection, and then the multiple battery 100 modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 110. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 120.

[0060] Each battery cell 120 may be a secondary battery 100 or a primary battery 100, or a lithium-sulfur battery 100, a sodium-ion battery 100, or a magnesium-ion battery 100, but is not limited thereto. The battery cell 120 may be cylindrical, flat, rectangular, or in other shapes.

[0061] Please refer to Figure 3 , Figure 3 The exploded schematic diagram of the battery cell provided in some embodiments of the present application. The battery cell 120 refers to the smallest unit constituting the battery 100, and the battery cell 120 includes an end cap 121, a housing 124, a battery cell assembly 125 and other functional components.

[0062] The end cap 121 refers to a component that covers the opening of the shell 124 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cap 121 can be adapted to the shape of the shell 124 to match the shell 124. Optionally, the end cap 121 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 121 is not easily deformed when squeezed and collided, so that the battery cell 120 can have a higher structural strength and improved safety performance. Functional components such as electrode terminals 122 may be provided on the end cap 121. The electrode terminal 122 can be used to electrically connect to the battery cell assembly 125 for outputting or inputting electrical energy of the battery cell 120. In some embodiments, the end cap 121 may also be provided with a pressure relief component 123 for releasing the internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold value. The pressure relief component 123 may be in the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and may be a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery 100 reaches a predetermined threshold value, the pressure relief component 123 performs an action or a weak structure provided in the pressure relief component 123 is destroyed, thereby forming an opening or channel for the internal pressure of the battery 100 to be released. The material of the end cap 121 may also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may also be provided on the inner side of the end cap 121, and the insulating member may be used to isolate the electrical connection part 303 in the housing 124 from the end cap 121 to reduce the risk of short circuit. Exemplarily, the insulating member may be plastic, rubber, etc.

[0063] The shell 124 is a component used to cooperate with the end cap 121 to form the internal environment of the battery cell 120, wherein the formed internal environment can be used to accommodate the battery cell assembly 125, the electrolyte and other components. The shell 124 and the end cap 121 can be independent components, and an opening can be set on the shell 124, and the internal environment of the battery cell 120 is formed by covering the opening with the end cap 121 at the opening. Without limitation, the end cap 121 and the shell 124 can also be integrated. Specifically, the end cap 121 and the shell 124 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 124, the end cap 121 covers the shell 124. The shell 124 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 124 can be determined according to the specific shape and size of the battery cell assembly 125. The shell 124 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0064] The cell assembly 125 is a component in the battery cell 120 where electrochemical reactions occur. One or more cell assemblies 125 may be included in the housing 124. The cell assembly 125 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the cell assembly 125, and the parts of the positive and negative electrode sheets without active materials each constitute a tab 126. The positive tab 126 and the negative tab 126 may be located together at one end of the main body or at both ends of the main body respectively. During the charge and discharge process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the tab 126 connects the electrode terminal 122 to form a current loop.

[0065] The energy storage device 1000 may also be provided with a heat dissipation mechanism, which may be an air cooling mechanism or a water cooling mechanism, etc. The heat dissipation mechanism may dissipate heat from the battery 100 in the cabinet 200 to reduce the possibility of thermal runaway of the battery 100 during the charging and discharging process, so that the battery 100 operates at a more appropriate temperature.

[0066] Reference 1. Figure 4 , Figure 5 and Figure 6 As shown, Figure 4 The assembly structure diagram of the bracket and the battery provided in some embodiments of the present application is as follows: Figure 5 for Figure 4 A magnified view of part A. Figure 6 for Figure 5 Schematic diagram of the exploded structure shown; In some embodiments of the present application, the energy storage device 1000 includes a bracket 300, a battery 100 and a fixing assembly 400. The battery 100 is arranged on the bracket 300, and the battery 100 has a box 110. The fixing assembly 400 includes a fixing member 410, and the fixing member 410 includes a first plate 411, a second plate 412 and a third plate 413 connected in sequence at an angle. The first plate 411 is connected to the box 110, and the third plate 413 is connected to the bracket 300.

[0067] The bracket 300 is a component for supporting the battery 100. The energy storage device 1000 may be provided with a cabinet 200 or may not be provided with a cabinet 200. When the cabinet 200 is provided, the bracket 300 is provided in the cabinet 200. The bracket 300 may be used to support one battery 100 or multiple batteries 100. For example, the bracket 300 may form a multi-layer accommodation space so as to stack multiple batteries 100 in the height direction.

[0068] The battery 100 can be placed roughly horizontally on the bracket 300, supported by the support of the bracket 300, and the fixing assembly 400 can fix the battery 100 to the bracket 300 to reduce the possibility of the battery 100 falling from the bracket 300 when the bracket 300 vibrates or moves. When there are multiple batteries 100, each battery 100 can be connected to the corresponding bracket 300 through one or more fixing assemblies 400.

[0069] The fixing member 410 can be a sheet metal member or a member made of other materials. The first plate 411, the second plate 412 and the third plate 413 are connected in order at an angle, which can be understood as the second plate 412 is set at an acute angle, a right angle or an obtuse angle with the first plate 411, and the third plate 413 is set at an acute angle, a right angle or an obtuse angle with the second plate 412, that is, the plate surface of the second plate 412 intersects with the plate surface of the first plate 411, and the plate surface of the third plate 413 intersects with the plate surface of the second plate 412, and the first plate 411, the second plate 412 and the third plate 413 form a fixing member 410 in a non-flat shape. Among them, the first plate body 411 and the third plate body 413 can be arranged roughly in parallel, or the plate surfaces of the two can be arranged to intersect; the first plate body 411 and the third plate body 413 can be located on the same side of the second plate body 412 and arranged at intervals, and the first plate body 411 and the third plate body 413 can also be located on different sides of the second plate body 412.

[0070] The fixing assembly 400 can be arranged at the end of the battery 100 along the length direction, or at the side of the battery 100 along the width direction. The first plate portion, the second plate portion, and the third plate portion can be connected as a whole, or can be an integrally formed structure. The first plate portion and the box body 110 can be snap-fitted or detachably connected by fasteners, etc., and the third plate body 413 and the bracket 300 can be snap-fitted or detachably connected by fasteners, etc., so as to facilitate the inspection or replacement of the battery 100.

[0071] It should be noted that the length direction of the battery 100 can be consistent with the length direction of the bracket 300, and the width direction of the battery 100 can be consistent with the width direction of the bracket 300. The height direction of the bracket 300 is consistent with the height direction of the energy storage device 1000. The length direction and width direction of the bracket 300 are roughly parallel to the bottom surface of the cabinet 200, and the height direction is roughly perpendicular to the bottom surface of the cabinet 200. In other words, the length direction, width direction and height direction are defined with reference to the energy storage device 1000 in a common working condition, that is, the direction is defined with reference to the state where the energy storage device 1000 is installed on the ground. The gravity direction of the energy storage device 1000 is roughly the height direction, and the length direction and width direction are roughly the horizontal direction, both of which are roughly perpendicular to the height direction, and the horizontal directions are roughly perpendicular to each other. When the energy storage device 1000 is in other working conditions, the relative relationship between the length direction, width direction and height direction remains consistent, that is, the three are roughly perpendicular to each other.

[0072] In the energy storage device 1000 of the present application, the battery 100 is connected to the bracket 300 through the fixing assembly 400. The fixing member 410 of the fixing assembly 400 includes a first plate 411, a second plate 412 and a third plate 413 connected in sequence at an angle. The first plate 411 is connected to the battery 100, and the third plate 413 is connected to the bracket 300. The first plate 411, the second plate 412 and the third plate 413 connected at an angle have higher strength and deformation resistance than the flat plate connecting member. During the transportation of the energy storage device 1000, when the battery 100 vibrates or moves and impacts the fixing member 410, the fixing member 410 is not easily deformed or damaged, thereby improving the fixing stability of the battery 100 on the bracket 300 and reducing the possibility of fixation failure of the battery 100.

[0073] According to some embodiments of the present application, optionally, Figure 5 , Figure 6 Combined with Figure 7 As shown, Figure 7 This is a structural diagram of a fixing member provided in some embodiments of the present application, in which the first plate 411 and the third plate 413 are respectively connected to opposite sides of the second plate 412 .

[0074] That is, the first plate 411 is connected to one side of the second plate 412 , and the third plate 413 is connected to the other side of the second plate 412 , so that the fixing member 410 forms a substantially “Z” shape.

[0075] In this embodiment, the first plate 411 and the third plate 413 are arranged on opposite sides of the second plate 412, which can improve the strength of the fixing member 410 and make it difficult for the connection operation between the first plate 411 and the battery 100 and the connection operation between the third plate 413 and the bracket 300 to interfere with each other, thereby improving the assembly convenience of the fixing member 410.

[0076] According to some embodiments of the present application, optionally, Figure 5 , Figure 6 Combined with Figure 7 As shown, in some implementations, the second plate 412 extends along the first direction X, the first plate 411 and the third plate 413 are respectively arranged at both ends of the second plate 412 along the first direction X, and the first plate 411 and the third plate 413 both extend along the second direction Z. The first direction X is the length direction or width direction of the bracket 300, and the second direction Z is the height direction of the bracket 300.

[0077] In this embodiment, the first direction X and the second direction Z are both bidirectional directions along the same straight line. For example, the second direction Z includes directions from top to bottom and from bottom to top.

[0078] When the energy storage device 1000 is assembled, the battery 100 can be stacked on the bracket 300 by being pushed in horizontally. According to the specific design of the energy storage device 1000, the battery 100 can be designed to be pushed into the bracket 300 along the width direction of the bracket 300, or can be designed to be pushed into the bracket 300 along the length direction of the bracket 300. The pushing direction of the battery 100 can correspond to the first direction X, that is, the direction in which the battery 100 is pushed into the bracket 300 and the direction in which the battery 100 is moved out of the bracket 300 form the first direction X.

[0079] The fixing assembly 400 may be disposed at the end of the bracket 300 along the first direction X. The second plate 412 is disposed approximately horizontally, and the first plate 411 and the third plate 413 may be disposed approximately along the height direction. The first plate 411 and the third plate 413 may be located on the same side of the plate surface of the second plate 412, for example, the first plate 411 and the third plate 413 may both be connected to the top surface side of the second plate 412. The first plate 411 and the third plate 413 may also be on different sides of the second plate 412, for example, Figure 5 and Figure 6 As shown, the first plate body 411 is disposed on the top surface side of the second plate body 412 , and the third plate body 413 is disposed on the bottom surface side of the second plate body 412 .

[0080] In this embodiment, the first plate 411, the second plate 412 and the third plate 413 can be formed by stamping or bending the same sheet metal. The first plate 411 and the third plate 413 are located at both ends of the second plate 412 along the first direction X, so that the connection operation between the first plate 411 and the battery 100 and the connection operation between the third plate 413 and the bracket 300 are not easy to interfere with each other, thereby improving the assembly convenience of the fixing member 410; at the same time, the first plate 411 and the third plate 413 are arranged at intervals in the first direction X, so that the connection position between the first plate 411 and the box 110 and the connection position between the third plate 413 and the bracket 300 are misaligned in the second direction Z, and during the vibration of the battery 100, the possibility of the two connection positions being in the same straight line and easily causing connection failure can be reduced. For example, the first plate 411 is connected to the box body 110 by a bolt assembly, and the third plate 413 is connected to the bracket 300 by a bolt assembly. The first plate 411 and the third plate 413 are spaced apart along the first direction X, so that the first fixing hole 414 on the first plate 411 and the second fixing hole 415 on the third body are staggered. During the vibration of the battery 100, the possibility of torque attenuation of the bolt assembly on the fixing member 410 is reduced, thereby reducing the possibility of the bolt assembly falling off and causing the battery 100 to fail to fix.

[0081] According to some embodiments of the present application, optionally, in some implementations, the first plate body 411, the second plate body 412 and the third plate body 413 are an integral structure.

[0082] The first plate body 411 , the second plate body 412 and the third plate body 413 may be connected into an integral structure by welding or the like, or may be formed into an integral structure by bending the same sheet metal, or may be an integral injection molded structure.

[0083] The first plate 411, the second plate 412 and the third plate 413 are an integrated structure, so that the structural strength of the fixing member 410 is relatively high. When the battery 100 vibrates or moves during the transportation of the energy storage device 1000 and impacts the fixing member 410, the fixing member 410 is not easily deformed or damaged, thereby improving the fixing stability of the battery 100 on the bracket 300 and reducing the possibility of fixing failure of the battery 100.

[0084] According to some embodiments of the present application, optionally, Figure 4 and Figure 5 As shown, in some implementations, the fixing assembly 400 further includes a first fastener 420 and a second fastener 430 , the first plate 411 is connected to the battery 100 via the first fastener 420 , and the third plate 413 is connected to the bracket 300 via the second fastener 430 .

[0085] The first fastener 420 and the second fastener 430 may both be pin assemblies, bolt assemblies, etc., or may be other components with a fastening function.

[0086] The first plate 411 is connected to the box 110 of the battery 100 through the first fastener 420, and the third plate 413 is connected to the bracket 300 through the second fastener 430. It is not only easy to operate, but also the first plate 411 can be separated from the battery 100 by removing the first fastener 420, and the second plate 412 can be separated from the bracket 300 by removing the second fastener 430. In this way, the fixing member 410 can be removed to facilitate the replacement or repair of the battery 100.

[0087] According to some embodiments of the present application, optionally, Figures 4 to 6 As shown, a first fixing hole 414 is provided on the first plate body 411 , a first connecting hole 114 is provided on the box body 110 , and a first fastener 420 is passed through the first fixing hole 414 and the first connecting hole 114 .

[0088] When the fixing member 410 is connected to the battery 100, the first fixing hole 414 is aligned with the first connecting hole 114. The first fastener 420 can be a bolt assembly, including a threaded column and a nut member, the nut member is arranged at one end of the threaded column, the other end of the threaded column passes through the first fixing hole 414 and is threadedly connected to the first connecting hole 114, and the nut member abuts against the side of the first plate 411 away from the box body 110. The first fixing hole 414 can be a threaded hole so that the threaded column is threadedly connected to the first plate 411, and the first fixing hole 414 can also be a light hole. The first connecting hole 114 can be a blind hole. The nut member can be an integral structure with the threaded column, or it can be threadedly sleeved on the threaded column.

[0089] In this embodiment, holes are provided on the first plate 411 and the box body 110 as structures cooperating with the first fastener 420 . The assembly operation of the first fastener 420 is simple, and the structure of the fixing assembly 400 is simple.

[0090] According to some embodiments of the present application, optionally, Figures 4 to 6 As shown, the number of the first fasteners 420 , the number of the first fixing holes 414 , and the number of the first connecting holes 114 are all multiple, and each first fastener 420 is correspondingly inserted into one first fixing hole 414 and one first connecting hole 114 .

[0091] Among them, a plurality of first fixing holes 414 are dispersedly arranged on the first plate body 411, and the first connection holes 114 are dispersedly arranged on the side wall of the box body 110. When the fixing member 410 is connected to the battery 100, the plurality of first fixing holes 414 are arranged in one-to-one correspondence with the plurality of first connection holes 114. Specifically, the number of the first fasteners 420, the number of the first fixing holes 414, and the number of the first connection holes 114 can all be two, three, or four.

[0092] In a specific implementation of the present embodiment, the number of the first fasteners 420, the number of the first fixing holes 414 and the number of the first connection holes 114 are two. Compared with the solution with one first fastener 420, the two first fasteners 420 can improve the connection strength between the battery 100 and the first plate 411. At the same time, the two first fasteners 420 will not occupy a large space, which can reduce the problem of the first plate 411 being too large and causing the components to easily interfere with each other.

[0093] In this embodiment, a plurality of first fasteners 420 are provided to improve the connection stability between the fixing member 410 and the battery 100 .

[0094] According to some embodiments of the present application, optionally, Figures 4 to 6 As shown, the third plate 413 is provided with a second fixing hole 415 , the bracket 300 is provided with a second connecting hole 304 , and the second fastener 430 is passed through the second fixing hole 415 and the second connecting hole 304 .

[0095] When the fixing member 410 is connected to the bracket 300, the second fixing hole 415 is aligned with the second connecting hole 304. The second fastener 430 can be a bolt assembly, including a threaded column and a nut member, the nut member is arranged at one end of the threaded column, the other end of the threaded column passes through the second fixing hole 415 and is threadedly connected to the second connecting hole 304, and the nut member abuts against the side of the third plate 413 away from the box body 110. The second fixing hole 415 can be a threaded hole so that the threaded column is threadedly connected to the third plate 413, and the second fixing hole 415 can also be a light hole. The second connecting hole 304 can be a blind hole. The nut member can be an integral structure with the threaded column, or it can be threadedly sleeved on the threaded column.

[0096] In this embodiment, holes are provided on the third plate 413 and the bracket 300 as structures cooperating with the second fastener 430 . The assembly operation of the second fastener 430 is simple, and the structure of the fixing assembly 400 is simple.

[0097] According to some embodiments of the present application, optionally, the number of second fasteners 430 , the number of second fixing holes 415 and the number of second connecting holes 304 are all multiple, and each second fastener 430 is correspondingly inserted into a second fixing hole 415 and a second connecting hole 304 .

[0098] Among them, the plurality of second fixing holes 415 are dispersedly arranged on the third plate 413, the second connection holes 304 are dispersedly arranged on the bracket 300, and when the fixing member 410 is connected to the bracket 300, the plurality of second fixing holes 415 are arranged in one-to-one correspondence with the plurality of second connection holes 304. Specifically, the number of the second fasteners 430, the number of the second fixing holes 415, and the number of the second connection holes 304 can all be two, three, or four.

[0099] In a specific implementation of the present embodiment, the number of the second fasteners 430, the number of the second fixing holes 415 and the number of the second connection holes 304 are two. Compared with the solution with one second fastener 430, the two second fasteners 430 can improve the connection strength between the battery 100 and the third plate 413. At the same time, the two second fasteners 430 will not occupy a large space, which can reduce the problem of the third plate 413 being too large and causing the components to easily interfere with each other.

[0100] It can be understood that by providing a plurality of second fasteners 430 , the connection stability between the fixing member 410 and the bracket 300 can be improved.

[0101] According to some embodiments of the present application, optionally, Figure 6 to Figure 7 As shown, any second fixing hole 415 passes through opposite sides of the third plate 413 along the first direction X, and at least two second fixing holes 415 among the multiple second fixing holes 415 are staggered along the second direction Z. The first direction X is the length direction or width direction of the bracket 300, and the second direction Z is the height direction of the bracket 300.

[0102] It can be understood that the plate surface of the third plate body 413 is perpendicular to the first direction X, that is, the largest surface of the third plate body 413 is perpendicular to the first direction X, the largest surface of the third plate body 413 can be fitted with the bracket 300, and the second fixing hole 415 passes through the large surface of the third plate body 413 in a substantially horizontal direction, so as to facilitate the connection between the second fastener 430 and the third plate body 413. The two second fixing holes 415 are staggered along the second direction Z, that is, the centers of the two second fixing holes 415 are staggered.

[0103] In this embodiment, the second fixing holes 415 are staggered in the height direction. During the vibration of the battery 100, since the two second fasteners 430 are not on the same straight line in the height direction, the second fasteners 430 are not easy to loosen. For example, when the second fasteners 430 are bolt assemblies, during the vibration of the battery 100, the bolt assemblies are not easy to back-twist and fall off, thereby improving the fixing stability of the battery 100.

[0104] According to some embodiments of the present application, optionally, a plurality of first fixing holes 414 are provided on the first plate body 411, a plurality of first connecting holes 114 are provided on the box body 110, a plurality of first fasteners 420 are respectively correspondingly passed through a first fixing hole 414 and a first connecting hole 114, and an arrangement direction of at least two first fixing holes 414 intersects with an arrangement direction of at least two second fixing holes 415.

[0105] This embodiment is defined on the basis that a plurality of second fixing holes 415 are provided on the third plate 413, a plurality of second connecting holes 304 are provided on the bracket 300, and a plurality of second fasteners 430 are respectively provided through a second fixing hole 415 and a second connecting hole 304. Among them, the arrangement direction of at least two first fixing holes 414 refers to the sequential arrangement direction of at least two first fixing holes 414 on the first plate 411, and the arrangement direction of at least two second fixing holes 415 refers to the sequential arrangement direction of at least two second fixing holes 415 on the third plate 413. The first fixing hole 414 can penetrate the first plate 411 along the first direction X, and the second fixing hole 415 can also penetrate the third plate 413 along the first direction X. At least two first fixing holes 414 can be arranged along the third direction Y, and at least two second fixing holes 415 can be arranged along the second direction Z. Among them, the third direction Y is a bidirectional direction along the same straight line, and the third direction Y intersects with the first direction X and the second direction Z in pairs, and specifically can be substantially perpendicular to each other in pairs.

[0106] It can be understood that, by intersecting the arrangement direction of the first fixing holes 414 and the arrangement direction of the second fixing holes 415, the fixing member 410 is fixed in two intersecting directions, thereby reducing the possibility of the fixing member 410 loosening in the intersecting direction. For example, when at least two first fixing holes 414 can be arranged along the third direction Y and at least two second fixing holes 415 can be arranged along the second direction Z, the possibility of the fixing member loosening in both the third direction Y and the second direction Z can be reduced.

[0107] According to some embodiments of the present application, optionally, Figures 4 to 6 As shown, the bracket 300 has a first end and a second end opposite to each other along a first direction X, and along the first direction X, part of the battery 100 protrudes in a direction away from the second end relative to the first end, the first plate 411 is connected to the protruding portion of the battery 100 relative to the first end, the second plate 412 is arranged on the bottom side of the protruding portion of the battery 100 relative to the first end, and the third plate 413 is connected to the first end of the bracket 300. The first direction X is the length direction or width direction of the bracket 300.

[0108] like Figures 4 to 6As shown, the fixing member 410 is mounted on the first end of the bracket 300, and the battery 100 is disposed on the bracket 300. At the first end of the bracket 300, a portion of the battery 100 protrudes outward and is located outside the bracket 300. The second plate 412 of the fixing member 410 can be disposed on the bottom side of the battery 100, and can play a certain supporting and limiting role on the battery 100 when the battery 100 is shaken up and down.

[0109] According to design requirements, the battery can be pushed into the bracket along one end to the other end in the width direction of the bracket 300, or can be pushed into the bracket along one end to the other end in the length direction of the bracket 300. The first direction X can correspond to the pushing direction of the battery 100, and the first end of the bracket 300 is the pushing-in and pushing-out end of the battery 100. The battery 100 can be pushed onto the bracket 300 along the direction from the first end to the second end, so that the end portion of the battery 100 along the pushing direction protrudes from the bracket 300, so that it is convenient for the carrying equipment or the operator to carry the battery 100 from the pushing-in and pushing-out end of the battery 100.

[0110] In this embodiment, the fixing member 410 is connected to the portion of the battery 100 protruding from the bracket 300, which can provide better support and fixation for the battery 100.

[0111] According to some embodiments of the present application, optionally, Figures 4 to 6 , and combined with Figure 8 As shown, Figure 8 This is a schematic diagram of the first bracket of some embodiments of the present application. In some implementations, the bracket 300 includes a limiting portion 302, a supporting portion 301 and a connecting portion 303. The limiting portion 302 and the supporting portion 301 both extend along a first direction X. Along the second direction Z, the limiting portion 302 and the connecting portion 303 are arranged on opposite sides of the supporting portion 301, and along the second direction Z, the battery 100 is arranged on a side of the supporting portion 301 facing the limiting portion 302. Along the third direction Y, the battery 100 is located on one side of the limiting portion 302, and the third plate 413 is connected to the connecting portion 303. One of the first direction X and the third direction Y is the width direction of the bracket 300, and the other is the length direction of the bracket 300. The second direction Z is the height direction of the bracket 300.

[0112] The first direction X may correspond to the direction in which the battery 100 is pushed into the bracket 300, that is, the pushing direction of the battery 100, and the third direction Y is approximately horizontal and approximately perpendicular to the first direction X. This embodiment is described by taking the first direction X as the length direction of the bracket 300 and the third direction Y as the width direction as an example.

[0113] The supporting portion 301 may be a plate-like structure, which may be arranged approximately horizontally, and the supporting portion 301 is used to support the battery 100. The limiting portion 302 and the supporting portion 301 may be an integral structure, such as an integral structure formed by welding or sheet metal bending, etc. The limiting portion 302 may be a substantially vertical plate structure, which is used to limit the displacement of the battery 100 along the third direction Y. The connecting portion 303 may be connected to the end of the supporting portion 301 along the first direction X, and the connecting portion 303 may be an integral structure with the supporting portion 301, such as being welded as an integral whole, and the connecting portion 303 may be a substantially plate-like structure, and the connecting portion 303 may be substantially the same size and shape as the third plate body 413, so that the connecting portion 303 matches the third plate body 413.

[0114] Alternatively, if Figure 8 As shown, a guide plate 307 may be provided at the push-in end of the limiting portion 302 corresponding to the battery 100 . The guide plate 307 is tilted along the direction in which the battery 100 is pushed into the bracket 300 and forms a flared opening to facilitate pushing the battery 100 onto the supporting portion 301 .

[0115] In this embodiment, the connecting portion 303 is arranged on the side of the supporting portion 301 away from the battery 100 along the second direction Z, that is, it is arranged on the lower side of the supporting portion 301. The connecting portion 303 is not easy to interfere with the battery 100, which is conducive to the reasonable arrangement of components and improves the assembly convenience of the fixing part 410, the battery 100 and the bracket 300.

[0116] According to some embodiments of the present application, optionally, Figures 4 to 6 and Figure 8 As shown, the bracket 300 includes a first bracket 310 and a second bracket 320, and the first bracket 310 and the second bracket 320 both include a limiting portion 302, a supporting portion 301 and a connecting portion 303. The first bracket 310 and the second bracket 320 both extend along the first direction X, and the first bracket 310 and the second bracket 320 are arranged in sequence along the third direction Y. The limiting portion 302 of the first bracket 310 is arranged opposite to the limiting portion 302 of the second bracket 320. The battery 100 is arranged on the supporting portion 301 of the first bracket 310 and the supporting portion 301 of the second bracket 320, and is located between the limiting portion 302 of the first bracket 310 and the limiting portion 302 of the second bracket 320. The connecting portion 303 of the first bracket 310 and the connecting portion 303 of the second bracket 320 are respectively connected to the box body 110 through at least one fixing component 400.

[0117] The first bracket 310 and the second bracket 320 are both connected with a fixing assembly 400 , which can connect and fix the battery 100 at multiple positions, thereby improving the stability of the connection between the battery 100 and the bracket 300 .

[0118] According to some embodiments of the present application, optionally, Figures 4 to 6 and Figure 8 As shown, along the third direction Y, the side on which the connecting portion 303 of the first bracket 310 and the connecting portion 303 of the second bracket 320 face each other is the first side edge 309, the first side edge 309 is inclined, and from one end connected to the supporting portion 301 to the end away from the supporting portion 301 along the second direction Z, the two first side edges 309 are gradually disposed away from each other in the third direction Y.

[0119] That is to say, the first side edge 309 of the connecting portion 303 of the first bracket 310 is tilted, and the first side edge 309 of the connecting portion 303 of the second bracket 320 is tilted, and both first side edges 309 are gradually tilted away from each other from top to bottom, so that a flared structure with a wide lower end and a narrow upper end is formed between the two connecting portions 303.

[0120] The bracket 300 may have a first bracket 310 and a second bracket 320. Figure 1 and Figure 4 As shown, the bracket 300 may also have multiple layers of first brackets 310 and second brackets 320, and each layer of the first brackets 310 and second brackets 320 are arranged along the third direction Y and are used to carry a battery 100, wherein the multiple layers of first brackets 310 can be installed on the first support frame 330, and the multiple layers of second brackets 320 can be installed on the second support frame 340, and the first support frame 330 and the second support frame 340 are both connected between the top surface and the bottom surface of the cabinet 200.

[0121] It is understandable that the connecting portion 303 of the first bracket 310 and the connecting portion 303 of the second bracket 320 are arranged at an angle, which can reserve more space for the assembly of the lower battery 100 and reduce the possibility of the lower battery 100 being affected by the connecting portion 303 when being pushed into the bracket 300.

[0122] According to some embodiments of the present application, optionally, Figure 4 and Figure 8 As shown, along the second direction Z, the end of the limiting portion 302 of the first bracket 310 that is away from the supporting portion 301 and the end of the limiting portion 302 of the second bracket 320 that is away from the supporting portion 301 are both provided with a pressing portion 305; a protrusion 113 is provided on the box body 110, and along the second direction Z, the protrusion 113 abuts against the side of the pressing portion 305 facing the supporting portion 301.

[0123] The end of the limiting portion 302 of the first bracket 310 away from the supporting portion 301 may be provided with a pressing portion 305, and the end of the limiting portion 302 of the second bracket 320 away from the supporting portion 301 may also be provided with a pressing portion 305. The pressing portion 305 may be a pressing plate or a pressure strip, and the pressing portion 305 may be substantially parallel to the supporting portion 301 and arranged opposite to each other along the second direction Z. A plurality of pressing portions 305 may be arranged at intervals on each limiting portion 302 along the first direction X.

[0124] The first direction X may be the pushing direction of the battery 100. Optionally, along the first direction X, one end of the pressing portion 305 is provided with a guide portion 306, which is inclined along the pushing direction to form a guide surface. The guide portion 306 can be provided to facilitate assembly of the battery 100.

[0125] It is understandable that the pressing portion 305 cooperates with the protruding portion 113 to limit the upward displacement of the battery 100 along the height direction, thereby improving the installation stability of the battery 100.

[0126] According to some embodiments of the present application, optionally, the energy storage device 1000 also includes a cabinet 200, an opening 201 is provided at one end of the cabinet 200 along the first direction X, the bracket 300 is arranged in the cabinet 200, and the battery 100 and the bracket 300 are connected to the fixing assembly 400 at one end facing the opening 201, and the first direction X is the length direction or the width direction of the bracket 300.

[0127] The battery 100 is pushed into the bracket 300 from the opening 201, and the first direction X is consistent with the pushing direction of the battery 100. The fixing assembly 400 is connected to the battery 100 and one end of the bracket 300 facing the opening 201, that is, the fixing assembly 400 is connected to the pushing end of the bracket 300 corresponding to the battery 100, and the fixing assembly 400 can limit the movement of the battery 100 at the pushing end of the battery 100. The fixing assembly 400 is assembled on the opening side of the cabinet 200, which is easy to operate.

[0128] According to some embodiments of the present application, optionally, along the first direction X, a stopper 308 is provided at one end of the bracket 300 facing away from the opening 201 , and the battery 100 is located on a side of the stopper 308 facing the opening 201 .

[0129] The stopper 308 may be a plate-shaped member, which may be connected to an end of the limiting portion 302 facing away from the outlet 201 .

[0130] It can be understood that the stopper 308 can limit the movement of the battery 100 away from the opening 201 along the first direction X. At the same time, when the battery 100 is pushed to the bracket 300 along the first direction X, the stopper 308 also serves as a positioning member. When the battery 100 abuts against the stopper 308, it can be considered that the battery 100 is pushed into place.

[0131] like Figure 1 , Figures 4 to 8 As shown, this embodiment provides an energy storage device 1000, including a cabinet 200, a bracket 300, a battery 100 and a fixing assembly 400, wherein the bracket 300 is disposed in the cabinet 200, the battery 100 is disposed on the bracket 300, and the battery 100 has a box 110. The fixing assembly 400 includes a fixing member 410, a first fastener 420 and a second fastener 430, the fixing member 410 includes a first plate 411, a second plate 412 and a third plate 413 connected in sequence at an angle, and the first plate 411, the second plate 412 and the third plate 413 are bent to form an integrated structure.

[0132] In this embodiment, the extension direction of the bracket 300, that is, the length direction of the bracket 300 is defined as the first direction X, the height direction of the bracket 300, that is, the height direction of the cabinet 200 is defined as the second direction Z, and the width direction of the bracket 300 is defined as the third direction Y.

[0133] The cabinet 200 is provided with an opening 201 at one end along the first direction X. The bracket 300 includes a first bracket 310 and a second bracket 320. The first bracket 310 is connected to the box 110 via a fixing assembly 400, and the second bracket 320 is connected to the box 110 via another fixing assembly 400. The first bracket 310 and the second bracket 320 each include a limiting portion 302, a supporting portion 301, and a connecting portion 303. The first bracket 310 and the second bracket 320 both extend along the first direction X, and the first bracket 310 and the second bracket 320 are arranged in sequence along the third direction Y, the limiting portion 302 of the first bracket 310 is arranged opposite to the limiting portion 302 of the second bracket 320, the battery 100 is arranged on the supporting portion 301 of the first bracket 310 and the supporting portion 301 of the second bracket 320, and is located between the limiting portion 302 of the first bracket 310 and the limiting portion 302 of the second bracket 320, and one end of the battery 100 facing the opening 201 protrudes from the limiting portion 302 and the supporting portion 301.

[0134] In the first bracket 310 and the corresponding fixing assembly 400: the limiting portion 302 and the supporting portion 301 both extend along the first direction X, along the second direction Z, the limiting portion 302 and the connecting portion 303 are arranged on opposite sides of the supporting portion 301, and along the second direction Z, the battery 100 is arranged on the side of the supporting portion 301 facing the limiting portion 302, along the third direction Y, the battery 100 is located on one side of the limiting portion 302, along the first direction X, the limiting portion 302 is located at one end of the supporting portion 301 facing the opening 201 of the cabinet 200, and the fixing assembly 400 is arranged at one end of the first bracket 310 facing the opening 201. The second plate 412 extends along the first direction X, the first plate 411 and the third plate 413 are respectively arranged at the two ends of the second plate 412 along the first direction X, and the first plate 411 is located on the top surface side of the second plate 412, and the third plate 413 is located on the bottom surface side of the second plate 412, the first plate 411 is substantially perpendicular to the second plate 412, and the third plate 413 is substantially perpendicular to the second plate 412. The first plate 411 is attached to the side wall of the box 110 facing the opening 201, and is connected to the side wall of the box 110 through the first fastener 420, the second plate 412 is arranged on the bottom side of the outwardly protruding portion of the battery 100 relative to the bracket 300, and the third plate 413 is attached to the connecting portion 303, and is connected to the connecting portion 303 through the second fastener 430. The first fastener 420 and the first fastener 420 are both bolt assemblies, and there are two first fasteners 420. Two first fixing holes 414 are provided on the first plate body 411, and two first connection holes 114 are provided on the side wall of the battery 100 facing the opening 201. The two first fixing holes 414 are arranged in a one-to-one correspondence with the two first connection holes 114, and the two first fixing holes 414 are arranged sequentially along the third direction Y on the first plate body 411, and each first fastener 420 passes through a first fixing hole 414 and a first connection hole 114 accordingly. There are two second fasteners 430, two second fixing holes 415 are provided on the third plate body 413, and two second connecting holes 304 are provided on the connecting portion 303. The two second fixing holes 415 are arranged in a one-to-one correspondence with the two second connecting holes 304. The two second fixing holes 415 are spaced and staggered along the second direction Z on the third plate body 413, and each second fixing hole 415 passes through opposite sides of the third body along the first direction X, and each second fastener 430 passes through a second fixing hole 415 and a second connecting hole 304 correspondingly.

[0135] The arrangement between the second bracket 320 and the corresponding fixing assembly 400 is the same as the arrangement between the first bracket 310 and the corresponding fixing assembly 400.

[0136] Along the third direction Y, the side where the connecting portion 303 of the first bracket 310 and the connecting portion 303 of the second bracket 320 face each other is the first side edge 309. The first side edge 309 is inclined, and from one end connected to the supporting portion 301 to the end away from the supporting portion 301 along the second direction Z, the two first side edges 309 are gradually disposed away from each other in the third direction Y.

[0137] Along the first direction X, one end of the first bracket 310 facing away from the opening 201 and one end of the second bracket 320 facing away from the opening 201 are both provided with a stopper 308, and the stopper 308 is used to limit the movement of the battery 100 away from the opening 201. Along the second direction Z, one end of the limiting portion 302 of the first bracket 310 facing away from the supporting portion 301 and one end of the limiting portion 302 of the second bracket 320 facing away from the supporting portion 301 are both provided with a pressing portion 305; a protrusion 113 is provided on the box body 110, and along the second direction Z, the protrusion 113 abuts against the side of the pressing portion 305 facing the supporting portion 301.

[0138] In the energy storage device 1000 of this embodiment, the battery 100 can be pushed from the side where the opening 201 is located along the first direction X onto the supporting portion 301 of the first bracket 310 and the second bracket 320. After the battery 100 is on the supporting portion 301, the fixing assembly 400 is assembled onto the battery 100 and the bracket 300. Among them, when the battery 100 is in the supporting part 301, in the second direction Z, the battery 100 is supported by the supporting part 301 and pressed by the pressing part 305, so that the battery 100 is fixed along the second direction Z, and in the third direction Y, the battery 100 is affected by the limiting part 302 of the first bracket 310 and the second bracket 320, so that the battery 100 is fixed in the third direction Y; in the first direction X, the battery 100 is affected by the stopper 308 and the fixing assembly 400, so that the battery 100 is fixed in the first direction X, and the fixing part 410, the battery 100 and the bracket 300 form a fixed connection, which reduces the possibility of shaking of the battery 100.

[0139] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0140] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification 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 herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An energy storage device, characterized in that: include: bracket; A battery, arranged on the bracket, wherein the battery has a box body; The fixing assembly comprises a fixing member, wherein the fixing member comprises a first plate body, a second plate body and a third plate body which are connected in sequence at an angle, wherein the first plate body is connected to the box body, and the third plate body is connected to the bracket.

2. The energy storage device according to claim 1, characterized in that: The first plate body and the third plate body are respectively connected to opposite sides of the second plate body.

3. The energy storage device according to claim 1, characterized in that: The second plate body extends along a first direction, the first plate body and the third plate body are respectively arranged at two ends of the second plate body along the first direction, the first plate body and the third plate body both extend along a second direction, the first direction is the length direction or the width direction of the bracket, and the second direction is the height direction of the bracket.

4. The energy storage device according to claim 1, characterized in that: The first plate body, the second plate body and the third plate body are an integrated structure.

5. The energy storage device according to any one of claims 1 to 4, characterized in that: The fixing assembly further includes a first fastener and a second fastener, the first plate body is connected to the box body via the first fastener, and the third plate body is connected to the bracket via the second fastener.

6. The energy storage device according to claim 5, characterized in that: The first plate body is provided with a first fixing hole, the box body is provided with a first connecting hole, and the first fastener is passed through the first fixing hole and the first connecting hole.

7. The energy storage device according to claim 6, characterized in that: The number of the first fasteners, the number of the first fixing holes, and the number of the first connecting holes are all multiple, and each of the first fasteners is correspondingly inserted into one of the first fixing holes and one of the first connecting holes.

8. The energy storage device according to claim 5, characterized in that: The third plate body is provided with a second fixing hole, the bracket is provided with a second connecting hole, and the second fastener is passed through the second fixing hole and the second connecting hole.

9. The energy storage device according to claim 8, characterized in that: The number of the second fasteners, the number of the second fixing holes, and the number of the second connecting holes are all multiple, and each second fastener is correspondingly inserted into one second fixing hole and one second connecting hole.

10. The energy storage device according to claim 9, characterized in that: Any one of the second fixing holes passes through opposite sides of the third plate body along the first direction, and at least two of the multiple second fixing holes are staggered along the second direction. The first direction is the length direction or width direction of the bracket, and the second direction is the height direction of the bracket.

11. The energy storage device according to claim 9, characterized in that: The first plate body is provided with a plurality of first fixing holes, the box body is provided with a plurality of first connecting holes, the plurality of first fasteners are respectively correspondingly penetrated through one first fixing hole and one first connecting hole, and the arrangement direction of at least two of the first fixing holes intersects with the arrangement direction of at least two of the second fixing holes.

12. The energy storage device according to any one of claims 1 to 4, characterized in that: The bracket has a first end and a second end opposite to each other along a first direction, and along the first direction, part of the battery protrudes relative to the first end in a direction away from the second end, the first plate is connected to the protruding portion of the battery relative to the first end, the second plate is arranged on the bottom side of the protruding portion of the battery relative to the first end, and the third plate is connected to the first end of the bracket. The first direction is the length direction or width direction of the bracket.

13. The energy storage device according to claim 1, characterized in that: The bracket includes a limiting portion, a supporting portion and a connecting portion, the limiting portion and the supporting portion both extend along a first direction, along a second direction, the limiting portion and the connecting portion are arranged on opposite sides of the supporting portion, and along the second direction, the battery is arranged on a side of the supporting portion facing the limiting portion, along a third direction, the battery is located on one side of the limiting portion, and the third plate is connected to the connecting portion, one of the first direction and the third direction is a width direction of the bracket, the other is a length direction of the bracket, and the second direction is a height direction of the bracket.

14. The energy storage device according to claim 13, characterized in that: The bracket includes a first bracket and a second bracket, each of the first bracket and the second bracket includes the limiting portion, the supporting portion and the connecting portion, each of the first bracket and the second bracket extends along the first direction, and the first bracket and the second bracket are arranged in sequence along the third direction, the limiting portion of the first bracket is arranged opposite to the limiting portion of the second bracket, the battery is arranged on the supporting portion of the first bracket and the supporting portion of the second bracket, and is located between the limiting portion of the first bracket and the limiting portion of the second bracket, and the connecting portion of the first bracket and the connecting portion of the second bracket are respectively connected to the box body through at least one of the fixing components.

15. The energy storage device according to claim 14, characterized in that: Along the third direction, the side on which the connecting portion of the first bracket and the connecting portion of the second bracket face each other is a first side edge, the first side edge is inclined, and from an end connected to the supporting portion to an end away from the supporting portion along the second direction, the two first side edges are gradually disposed away from each other in the third direction.

16. The energy storage device according to claim 14, characterized in that: Along the second direction, at least one of an end of the limiting portion of the first bracket away from the supporting portion and an end of the limiting portion of the second bracket away from the supporting portion is provided with a pressing portion; The box body is provided with a protruding portion, and along the second direction, the protruding portion abuts against a side of the pressing portion facing the supporting portion.

17. The energy storage device according to any one of claims 1 to 4 and 13 to 16, characterized in that: The energy storage device also includes a cabinet, which is provided with an opening at one end along a first direction, the bracket is arranged in the cabinet, the battery and the bracket are connected to the fixing assembly at one end facing the opening, and the first direction is the length direction or width direction of the bracket.

18. The energy storage device according to claim 17, characterized in that: Along the first direction, a stopper is provided at one end of the bracket facing away from the opening, and the battery is located on a side of the stopper facing the opening.

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