Fixing assembly and energy storage device

Abstract

The utility model relates to a fixing assembly and an energy storage device. The energy storage device comprises a plurality of container modules and the fixing assembly. The container modules are stacked in the first direction, at least one container module is configured to contain a battery, each container module comprises a corner piece, and the corner piece is provided with a positioning hole. The fixing assemblies are at least arranged between the two adjacent container modules, each fixing assembly comprises a connecting base and a connecting plate, and the connecting bases penetrate through the positioning holes of the two adjacent container modules in the first direction and extend into the corner fittings; the connecting plates are arranged on at least one side, perpendicular to the first direction, of the connecting base and located on the outer sides of the two adjacent container modules, and the connecting plates are connected to the connecting base and the two adjacent container modules. According to the energy storage device, the two adjacent container modules can be connected and positioned at the same time through the fixing assemblies, the risk that the multiple stacked container modules are likely to shake and fall off is improved, and the reliability of the energy storage device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a fixing assembly and an energy storage device. BACKGROUND

[0002] With the rapid development of science and technology, electric energy has become an indispensable energy in people's production and life. In order to improve the smoothness of electric energy supply and realize the normal operation of production and life, an energy storage device needs to be used. As a device for cyclically storing and releasing electric energy, the energy storage device stores electric energy in the energy storage device through charging or discharging of the energy storage device, or supplies electric energy stored in the energy storage device to an electric device. The energy storage device is widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation and energy storage power station fields.

[0003] The energy storage device includes a container module, the container module is provided with a battery, the container module is an electric energy storage and transfer equipment, and is an important part of the development of distributed energy, smart grid and energy internet in the energy storage field. In the development of the energy storage device, how to improve the reliability of the energy storage device is a technical problem to be solved in the energy storage technology. CONTENT OF THE INVENTION

[0004] The present application provides a fixing assembly and an energy storage device, which can improve the reliability of the energy storage device to some extent.

[0005] In a first aspect, the present application provides an energy storage device, which comprises a plurality of container modules and a fixing assembly. The plurality of container modules are stacked along a first direction, at least one container module is configured to accommodate a battery, and the container module comprises a corner piece having a positioning hole. The fixing assembly is arranged between at least two adjacent container modules, and comprises a connecting seat and a connecting plate. The connecting seat passes through the positioning holes of the at least two adjacent container modules along the first direction and extends into the corner piece, and the connecting plate is arranged on at least one side of the connecting seat perpendicular to the first direction and located outside the at least two adjacent container modules. The connecting plate is connected to the connecting seat and the at least two adjacent container modules.

[0006] The energy storage device provided by the present application is connected to the connecting seat and the at least two adjacent container modules to limit the relative deviation of the at least two adjacent container modules along the first direction, and the connecting plate is connected to the connecting seat and the at least two adjacent container modules to realize the connection and fixation of the at least two adjacent container modules. Therefore, the fixing assembly can realize the connection and positioning of the at least two adjacent container modules at the same time, improve the risk of shaking and falling of the stacked plurality of container modules, and improve the reliability of the energy storage device.

[0007] According to one embodiment of the present application, the fixing assembly further comprises a connecting piece, which passes through and connects the connecting seat, the corner piece and the connecting plate.

[0008] The connecting piece passes through and connects the connecting seat, the corner piece and the connecting plate, and the positioning of multiple angles is achieved by realizing the connection in the dimension perpendicular to the first direction.

[0009] According to one embodiment of the present application, the connecting plate comprises a first plate body and a second plate body, the first plate body is arranged on one side of the corner piece along the second direction, the second plate body is arranged on one side of the corner piece along the third direction, the first plate body and the second plate body are connected, and the first direction, the second direction and the third direction are perpendicular to each other. The connecting plate and the connecting seat cooperate to realize the clamping and limiting of the two adjacent container modules in at least two directions, so as to improve the reliability of the container module stacking.

[0010] According to one embodiment of the present application, the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is connected to the first plate body and the connecting seat, and the second connecting piece is connected to the second plate body and the connecting seat. The first connecting piece, the second connecting piece and the connecting seat realize the fixing of the container module in three directions.

[0011] According to one embodiment of the present application, the first connecting piece and the second connecting piece are arranged at intervals along the first direction. The first connecting piece and the second connecting piece have a certain interval in the first direction, which can disperse and transmit the acting force, thereby improving the stress concentration of the connecting seat.

[0012] According to one embodiment of the present application, the two adjacent container modules comprise a first container module and a second container module; the connecting seat comprises a first convex body and a second convex body, the first convex body is arranged on the top of the second convex body along the first direction, the first convex body passes through and is positioned with the positioning hole of the first container module, and the second convex body passes through and is positioned with the positioning hole of the second container module.

[0013] According to one embodiment of the present application, the connecting seat further comprises a bearing plate, which is located between the first convex body and the second convex body and connected to the first convex body and the second convex body. In the plane perpendicular to the first direction, the area of the bearing plate is greater than the area of the first convex body, and the area of the bearing plate is greater than the area of the second convex body. The bearing plate is clamped between the corner piece of the first container module and the corner piece of the second container module.

[0014] The bearing plate is located between the first convex body and the second convex body and clamped between the corner piece of the first container module and the corner piece of the second container module, and directly bears the bidirectional load to realize uniform transmission of force. The bearing plate has a large contact area with the corner piece, which can effectively improve the local deformation between the connecting seat and the corner piece and provide structural stability.

[0015] According to one embodiment of the present application, the bearing plate comprises adjacent and connected first and second edges, the first edge is arranged to be away from the connecting plate along the second direction, the second edge is arranged to be away from the connecting plate along the third direction, an arc-shaped chamfer is arranged at the connection of the first and second edges, and the first, second and third directions are perpendicular to each other. The arc-shaped chamfer serves as an identifier of the connecting seat, which is conducive to the quick installation and positioning of the connecting seat.

[0016] According to one embodiment of the present application, the bearing plate comprises a first protrusion, the first protrusion is arranged on the first edge, and the two ends of the first protrusion protrude from the first edge along the first direction. The first protrusion is arranged on the side of the corner piece away from the connecting plate. The first protrusion is used to form a constraint by interfering with the corner piece when the connecting seat is installed incorrectly, so as to improve the assembly accuracy of the connecting seat.

[0017] According to one embodiment of the present application, the bearing plate comprises a second protrusion, the second protrusion is arranged on the second edge, and the two ends of the second protrusion protrude from the second edge along the first direction. The second protrusion is arranged on the side of the corner piece away from the connecting plate. The second protrusion is used to form a constraint by interfering with the corner piece when the connecting seat is installed incorrectly, so as to improve the assembly accuracy of the connecting seat.

[0018] According to one embodiment of the present application, the bearing plate comprises adjacent and connected third and fourth edges, the third edge is arranged to face the connecting plate along the second direction, and the fourth edge is arranged to face the connecting plate along the third direction. An angle is arranged at the connection of the third and fourth edges. The angle corresponds to the connecting plate, and the connecting seat can be quickly identified as being installed correctly or not through the angle.

[0019] According to one embodiment of the present application, the first edge is provided with an identifier. When the connecting seat is installed, the installation position of the connecting seat can be quickly identified.

[0020] According to one embodiment of the present application, the second edge is provided with an identifier. When the connecting seat is installed, the installation position of the connecting seat can be quickly identified.

[0021] According to one embodiment of the present application, the first protrusion comprises a first guide portion and a first connecting portion, the first guide portion and the first connecting portion are arranged along the first direction, the first guide portion is connected to the first connecting portion and the bearing plate, the first guide portion passes through and cooperates with the positioning hole of the first container module, and the connecting piece connects the first connecting portion, the corner piece of the first container module and the connecting plate. This is conducive to the quick installation and positioning of the connecting seat, and realizes the multi-directional connection between the fixed assembly and the corner piece, thereby improving the connection stability therebetween.

[0022] According to one embodiment of the present application, the first guide portion comprises at least one inclined surface, which is arranged on the side of the first guide portion away from the connecting plate. During the falling of the first container module, the corner piece naturally slides along the inclined surface to the assembly position, thereby reducing the difficulty of aligning the corner piece of the first container module with the first protrusion.

[0023] According to one embodiment of the present application, the first guide portion comprises a first inclined surface and a second inclined surface arranged adjacently and connected, the first inclined surface is arranged on the side of the first guide portion away from the connecting plate along a second direction, the second inclined surface is arranged on the side of the first guide portion away from the connecting plate along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other. The first inclined surface and the second inclined surface form a two-way guide structure, which can be adjusted in two directions simultaneously during the falling of the first container module, thereby improving the positioning accuracy of the first guide portion and the corner piece of the first container module.

[0024] According to one embodiment of the present application, the second protrusion comprises a second guide portion and a second connecting portion, the second guide portion and the second connecting portion are arranged along the first direction, the second guide portion is connected to the second connecting portion and the bearing plate, the second guide portion passes through the positioning hole of the second container module and is used for cooperating with the positioning hole, and the connecting piece connects the second connecting portion, the corner piece of the second container module and the connecting plate. This is conducive to the quick installation and positioning of the connecting seat, realizes the multi-directional connection between the fixed assembly and the corner piece, and improves the connection stability therebetween.

[0025] According to one embodiment of the present application, the second guide portion comprises at least one guide surface, which is arranged on the side of the first guide portion away from the connecting plate, the guide surface comprises an inclined segment and a transition segment, and the inclined segment is connected to the end of the transition segment away from the bearing plate and is arranged inclinedly in the direction of the second connecting portion. The second guide portion has a large gap with the positioning hole, so as to reserve a correct positioning space for the first container module.

[0026] According to one embodiment of the present application, the second guide portion comprises a first guide surface and a second guide surface arranged adjacently and connected, the first guide surface is arranged on the side of the second guide portion away from the connecting plate along a second direction, the second guide surface is arranged on the side of the second guide portion away from the connecting plate along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other. The first guide surface and the second guide surface form a two-way guide structure, which is adjusted synchronously in two directions when the connecting seat is installed in the second container module, thereby improving the positioning accuracy of the second guide portion and the corner piece of the second container module.

[0027] According to one embodiment of the present application, the corner piece is provided with a connecting hole, and the connecting piece passes through the connecting hole to connect the connecting seat, the corner piece and the connecting plate; the connecting plate comprises a plate body and a limiting portion, the plate body is arranged on the outer side of the corner piece, the limiting portion is arranged on the side of the plate body facing the connecting seat, the limiting portion extends into the connecting hole and is clamped with the corner piece. The limiting portion can achieve the effect of auxiliary support for the connecting plate, and when the connecting plate is installed, the limiting portion is pre-positioned with the corner piece, and then locked and fixed by the connecting piece.

[0028] According to one embodiment of the present application, the fixing assembly further comprises a connecting sleeve, the connecting sleeve is sleeved on the outer side of the connecting piece, the connecting sleeve comprises a main body portion and a flange surrounding the main body portion, the main body portion passes through the connecting plate and the corner piece and abuts against the connecting seat, and the flange is clamped with the connecting plate. When the connecting piece is locked with the connecting seat, the flange is pressed on the connecting plate by the connecting piece, and at the same time, the force is transmitted to the connecting plate, so that the connecting plate and the connecting seat clamp the corner piece, thereby achieving the fixation of the corner piece.

[0029] According to one embodiment of the present application, the energy storage device further comprises a unit module, along the first direction, the unit module and the container module are stacked along the first direction, and the fixing assembly is further arranged between the unit module and the container module and connected to the unit module and the container module. The application range of the fixing assembly is improved.

[0030] In the second aspect, the present application provides a fixing assembly of an energy storage device, the fixing assembly comprising a connecting seat and a connecting plate; the connecting seat is configured to pass through the positioning holes of the corner pieces of adjacent two container modules stacked along a first direction and extend into the corner pieces; the connecting plate is arranged on at least one side of the connecting seat perpendicular to the first direction, and the connecting plate is configured to be located on the outer side of the adjacent two container modules, and the connecting plate is used to connect the connecting seat and the adjacent two container modules.

[0031] The fixing assembly provided by the present application is positioned and matched with the adjacent two container modules to limit the relative deviation of the adjacent two container modules along the first direction, and the connecting plate is connected to the connecting seat and the adjacent two container modules to achieve the connection and fixation of the adjacent two container modules. Through the fixing assembly, the connection and positioning of the adjacent two container modules can be realized at the same time, and the risk of shaking and falling of the stacked multiple container modules is improved.

[0032] According to one embodiment of the present application, the fixing assembly further comprises a connecting piece, the connecting piece passes through the connecting seat, the corner piece and the connecting plate and connects the connecting seat, the corner piece and the connecting plate.

[0033] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the specific embodiments of the present 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 present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0034] The features, advantages, and technical and scientific effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0035] Figure 1 is a partial structure schematic diagram of an energy storage device provided by an embodiment of the present application;

[0036] Figure 2 is a structure schematic diagram of a corner piece and a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0037] Figure 3 is a structure schematic diagram of a corner piece of an energy storage device provided by an embodiment of the present application;

[0038] Figure 4 is a structure schematic diagram of a corner piece of an energy storage device provided by another embodiment of the present application;

[0039] Figure 5 is a right view of a partial structure of an energy storage device provided by an embodiment of the present application;

[0040] Figure 6 is Figure 5 is a cross-sectional structure schematic diagram at A-A;

[0041] Figure 7 is a front view of a partial structure of an energy storage device provided by an embodiment of the present application;

[0042] Figure 8 is Figure 7 is a cross-sectional structure schematic diagram at B-B;

[0043] Figure 9 is a structure schematic diagram of an angle of a connecting seat of a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0044] Figure 10 is a structure schematic diagram of another angle of a connecting seat of a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0045] Figure 11 is a structure schematic diagram of an angle of a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0046] Figure 12 is a structure schematic diagram of another angle of a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0047] Figure 13 is a left view of a fixing assembly of an energy storage device provided by an embodiment of the present application;

[0048] Figure 14is a front view of a fixing assembly of an energy storage device provided by an embodiment of the present application.

[0049] The accompanying drawings are not necessarily drawn to scale.

[0050] Explanation of reference signs:

[0051] 1, fixing assembly; 11, connecting seat; 111, first protrusion; 1111, first guide part; 11111, inclined surface; 11111a, first inclined surface; 11111b, second inclined surface; 1112, first connecting part; 112, second protrusion; 1121, second guide part; 11211, guide surface; 11211a, first guide surface; 11211b, second guide surface; 11212, inclined section; 11213, transition section; 1122, second connecting part; 113, bearing plate; 1131, first edge; 1132, second edge; 1133, first protruding part; 1134, second protruding part; 1135, third edge; 1136, fourth edge; 12, connecting plate; 12a, first plate body; 12b, second plate body; 121, plate main body; 122, limiting part; 13, connecting piece; 131, first connecting piece; 132, second connecting piece; 14, connecting sleeve; 141, main body part; 142, flange;

[0052] 100, container module; 101, first container module; 102, second container module; 10, corner piece; 20, positioning hole; 30, connecting hole;

[0053] x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0055] 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 terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an overly literal sense unless expressly so defined herein.

[0056] Reference throughout this application to "example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments.

[0057] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] The term "and / or" in this application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0059] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0060] "Multiple" appearing in the application refers to two or more (including two).

[0061] The energy storage device includes a plurality of stacked container modules. The container modules are connected together by using twist locks. When in transportation, in harsh weather, or in earthquake, different forces are generated on the twist locks by the upper container modules and the lower container modules, so that the container modules have a large gap therebetween, and the container modules are prone to shifting, tilting, and shaking, and the like, which results in that the stacked container modules are not firm and the reliability of the energy storage device is reduced. The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art.

[0062] In view of the above problems, the energy storage device provided by the present application is configured such that the connecting seat is positioned and matched with the two adjacent container modules to limit the relative deviation of the two adjacent container modules in the first direction, and the connecting plate is connected to the connecting seat and the two adjacent container modules to achieve the connection and fixation of the two adjacent container modules. Therefore, the fixation assembly can simultaneously achieve the connection and positioning of the two adjacent container modules, improve the risk of shaking and falling of the stacked container modules, and improve the reliability of the energy storage device.

[0063] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, and the like. The energy storage device can store electrical energy as needed and output electrical energy at appropriate times. For example, the energy storage device can store electrical energy during the off-peak period of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak period of electricity consumption.

[0064] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, or the like.

[0065] Referring to Figure 1 and Figure 2 , Figure 1 is a partial structural schematic view of an energy storage device according to an embodiment of the present application; Figure 2 is a structural schematic view of an angle piece and a fixation assembly of an energy storage device according to an embodiment of the present application.

[0066] As Figure 1 and Figure 2 shown, the present application provides an energy storage device. The energy storage device includes a plurality of container modules 100. The plurality of container modules 100 are stacked along a first direction x. At least one container module 100 is configured to accommodate a battery (not shown in the figure).

[0067] The energy storage device includes a plurality of container modules 100. At least one container module 100 is used to accommodate a battery. It can be understood that each container module 100 is used to accommodate a battery, or a part of the container modules 100 are used to accommodate a battery, and the other part of the container modules 100 are used to accommodate other electrical elements, and the like.

[0068] In some examples, the container module 100 includes a container and a frame, the frame having a receiving cavity, the container being located in the receiving cavity, an interior of the container accommodating the battery.

[0069] The battery is arranged in the container, and the container has an outer structure in the form of a box structure. It can be understood that the box structure has a hollow cavity for accommodating the battery.

[0070] The box structure can be in various shapes, which can be selected according to requirements, such as a cylinder, a cuboid, or a square.

[0071] Exemplarily, the box structure is in the form of a cuboid. This facilitates transportation and assembly.

[0072] In some examples, the frame includes a frame structure composed of a plurality of cross beams and a plurality of longitudinal beams.

[0073] As an example, the plurality of cross beams and the plurality of longitudinal beams can be connected into the frame structure by welding or bolting.

[0074] Figure 1 The x direction represents the first direction, the y direction represents the second direction, and the z direction represents the third direction. The first direction x, the second direction y, and the third direction z are perpendicular to each other.

[0075] As an example, the container module 100 is generally in the form of a cuboid, the first direction x is parallel to the height direction of the container module 100, the second direction y is parallel to the length direction of the container module 100, and the third direction z is parallel to the width direction of the container module 100.

[0076] The battery can include one or more battery cell assemblies for providing voltage and capacity.

[0077] The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a hybrid manner by a busbar component. The hybrid connection means that there are both series and parallel connections among the plurality of battery cells.

[0078] The battery cell can be a secondary battery cell, which means that the battery cell can be activated by charging after being discharged to continue to be used.

[0079] As an example, the battery cell can be a lithium ion battery cell, a sodium ion battery cell, a sodium lithium ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium sulfur battery cell, a magnesium ion battery cell, a nickel hydrogen battery cell, a nickel cadmium battery cell, a lead-acid battery cell, etc.

[0080] As an example, the battery cells can be prismatic battery cells, pouch battery cells, or other shaped battery cells, including square battery cells, blade battery cells, multi-prismatic battery cells, such as hexagonal battery cells, etc.

[0081] As shown in FIG. 1, the container module 100 includes corner fittings 10 having positioning holes 20 through which at least portions of the connecting seats 11 extend into the corner fittings 10. The at least portions of the connecting seats 11 extend through the positioning holes 20 of the corner fittings 10 and into the interior of the corner fittings 10, forming an embedded positioning fit, further reducing the offset of adjacent container modules 100, and also enabling auxiliary support of the two connected container modules 100. Figures 2-3

[0082] The corner fittings 10 play an important role in lifting, handling, and fixing the container module 100.

[0083] In some examples, the corner fittings 10 are located at the bottom and top of the container module 100. The corner fittings 10 at the bottom can bear the overall weight of the container module 100. The corner fittings 10 at the top facilitate lifting and handling of the container module 100.

[0084] As an example, the corner fittings 10 can be provided at both the bottom and top of the frame.

[0085] Optionally, the four corners of the bottom of the container module 100 are each provided with a corner fitting 10, and the four corners of the top of the container module 100 are each provided with a corner fitting 10.

[0086] In some examples, one end of the connecting seat 11 extends through the positioning hole 20 of the corner fitting 10 at the top of one container module 100 and into the corner fitting 10, and the other end of the connecting seat 11 extends through the positioning hole 20 of the corner fitting 10 at the bottom of another container module 100 and into the corner fitting 10.

[0087] In some examples, the corner fitting 10 is provided with a through positioning hole 20 facing the wall portion of the connecting seat 11 in the first direction x.

[0088] In some examples, the corner fitting 10 is provided with a through connecting hole 30 facing the outer wall of the connecting seat 11, and the connecting piece 13 extends through the connecting hole 30.

[0089] ​The energy storage device comprises a fixing assembly 1. The fixing assembly 1 is arranged between at least two adjacent container modules 100, and comprises a connecting seat 11 and a connecting plate 12. The connecting seat 11 passes through the positioning holes 20 of the two adjacent container modules 100 in the first direction x and extends into the corner piece 10. The connecting plate 12 is arranged on at least one side of the connecting seat 11 perpendicular to the first direction x and outside the two adjacent container modules 100. The connecting plate 12 is connected to the connecting seat 11 and the two adjacent container modules 100.

[0090] In some examples, the connecting seat 11 comprises a first positioning part and a second positioning part. The first positioning part passes through the positioning hole 20 of one of the two adjacent container modules 100 and extends into the corner piece 10 to be positioned and matched with the corner piece 10. The second positioning part passes through the positioning hole 20 of the other of the two adjacent container modules 100 and extends into the corner piece 10 to be positioned and matched with the corner piece 10.

[0091] The connecting plate 12 is arranged outside the two adjacent container modules 100, which facilitates and simplifies the connection of the connecting plate 12 with the two container modules 100 and the connecting seat 11.

[0092] Specifically, the connecting seat 11 is first installed and positioned with the two container modules 100, and then the connecting plate 12 is connected and fixed with the connecting seat 11 and the two container modules 100 from the outside.

[0093] In some examples, the connecting piece 13 is directly connected with the connecting seat 11 and the two adjacent container modules 100, for example, by welding.

[0094] In some examples, the connecting piece 13 is connected with the connecting seat 11 and the two adjacent container modules 100 through a connecting member, for example, by screwing.

[0095] The energy storage device provided in the present application is characterized in that the connecting seat 11 is positioned and matched with the two adjacent container modules 100 to limit the relative deviation of the two adjacent container modules 100 in the first direction x. The connecting plate 12 is connected to the connecting seat 11 and the two adjacent container modules 100 to realize the connection and fixation of the two adjacent container modules 100. Therefore, the fixing assembly 1 can realize the connection and positioning of the two adjacent container modules 100 at the same time, improve the risk of shaking and falling of the stacked container modules 100, and improve the reliability of the energy storage device.

[0096] Referring to Figure 3 and Figure 4 , Figure 3 is a structural schematic view of a corner piece of an energy storage device according to an embodiment of the present application; Figure 4 is a structural schematic view of a corner piece of an energy storage device according to another embodiment of the present application.

[0097] According to one embodiment of the present application, as shown in Figures 2-3 The fixing assembly 1 further comprises a connecting member 13, which passes through and connects the connecting seat 11, the corner piece 10 and the connecting plate 12.

[0098] The fixing assembly 1 comprises at least two connecting members 13, one of which is connected to the connecting seat 11, the corner piece 10 and the connecting plate 12 at the bottom of one container module 100, and the other of which is connected to the connecting seat 11, the corner piece 10 and the connecting plate 12 at the top of another container module 100.

[0099] In some examples, the connecting plate 12 is provided with a through hole, and the connecting member 13 passes through the through hole and locks and fixes the connecting plate 12 and the connecting seat 11.

[0100] In some examples, the part of the connecting seat 11 extending into the corner piece 10 is provided with an assembly hole, which is connected with the connecting member 13.

[0101] Optionally, the connecting member 13 is a bolt. The assembly hole is a bolt hole.

[0102] In these optional examples, the connecting member 13 passes through and connects the connecting seat 11, the corner piece 10 and the connecting plate 12, and realizes positioning in multiple directions by realizing connection in the dimension perpendicular to the first direction x.

[0103] For reference, Figures 5-8 , Figure 5 is a right view of a partial structure of the energy storage device provided by one embodiment of the present application; Figure 6 is a front view of a partial structure of the energy storage device provided by one embodiment of the present application; Figure 5 is a cross-sectional structure schematic view at A-A; Figure 7 is a front view of a partial structure of the energy storage device provided by one embodiment of the present application; Figure 8 is a front view of a partial structure of the energy storage device provided by one embodiment of the present application; Figure 7 is a cross-sectional structure schematic view at B-B.

[0104] According to one embodiment of the present application, as shown in Figures 5-8 The connecting plate 12 comprises a first plate body 12a and a second plate body 12b, the first plate body 12a is arranged at one side of the corner piece 10 along the second direction y, the second plate body 12b is arranged at one side of the corner piece 10 along the third direction z, the first plate body 12a and the second plate body 12b are connected, and the first direction x, the second direction y and the third direction z are perpendicular to each other.

[0105] As an example, the corner piece 10 comprises a first side wall at one side of the second direction y and a second side wall at one side of the third direction z, the first side wall and the first plate body 12a are attached, and the second side wall and the second plate body 12b are attached.

[0106] In some examples, the connecting member 13 passes through and connects the first plate body 12a, the first side wall and the connecting seat 11.

[0107] In other examples, the connecting member 13 passes through and connects the second plate body 12b, the second side wall and the connecting seat 11.

[0108] In yet other examples, the fixing assembly 1 comprises a plurality of connecting members 13, at least one connecting member 13 is connected to and connects the first plate body 12a, the first side wall and the connecting seat 11 of the corner fitting 10 of the bottom of one container module 100, and at least one connecting member 13 is connected to and connects the second plate body 12b, the second side wall and the connecting seat 11 of the corner fitting 10 of the top of another container module 100.

[0109] In these optional examples, the connecting plate 12 and the connecting seat 11 cooperate, and at least two directional clamping and limiting can be achieved for the two adjacent container modules 100, so as to improve the reliability of the stacking of the container modules 100.

[0110] According to one embodiment of the present application, as shown in Figures 5-8 The connecting member 13 comprises a first connecting member 131 and a second connecting member 132, the first connecting member 131 is connected to the first plate body 12a and the connecting seat 11, and the second connecting member 132 is connected to the second plate body 12b and the second connecting seat 11.

[0111] For example, the connecting member 13 comprises two first connecting members 131 and two second connecting members 132, one first connecting member 131 is connected to the first plate body 12a, the corner fitting 10 of one container module 100 and the connecting seat 11, and one second connecting member 132 is connected to the second plate body 12b, the corner fitting 10 of one container module 100 and the connecting seat 11; the other first connecting member 131 is connected to the first plate body 12a, the corner fitting 10 of another container module 100 and the connecting seat 11, and the other second connecting member 132 is connected to the second plate body 12b, the corner fitting 10 of another container module 100 and the connecting seat 11.

[0112] In these optional examples, the first connecting member 131, the second connecting member 132 and the connecting seat 11 realize the fixing of the container module 100 in three directions.

[0113] According to one embodiment of the present application, the first connecting piece 131 and the second connecting piece 132 are arranged at intervals along the first direction x. The first connecting piece 131 and the second connecting piece 132 have a certain interval in the first direction x, which can disperse the transmission of force and further improve the stress concentration of the connecting seat 11.

[0114] With reference to Figure 9 and Figure 10 , Figure 9 is a structural schematic view of an angle of a connecting seat of a fixing assembly of an energy storage device provided by one embodiment of the present application; Figure 10 is another structural schematic view of an angle of a connecting seat of a fixing assembly of an energy storage device provided by one embodiment of the present application.

[0115] According to one embodiment of the present application, as shown in Figure 6 , Figure 9 and Figure 10 , the two adjacent container modules 100 include a first container module 101 and a second container module 102. The connecting seat 11 includes a first protrusion 111 and a second protrusion 112. The first protrusion 111 is arranged on the top of the second protrusion 112 along the first direction x. The first protrusion 111 penetrates the positioning hole 20 of the first container module 101 and is positioned and matched with the positioning hole 20. The second protrusion 112 penetrates the positioning hole 20 of the second container module 102 and is positioned and matched with the positioning hole 20.

[0116] In some examples, the first protrusion 111 and the second protrusion 112 have the same structure. Alternatively, the first protrusion 111 and the second protrusion 112 have different structures.

[0117] The first protrusion 111 penetrates the positioning hole 20 of the corner piece 10 of the first container module 101 and is positioned and matched with the positioning hole 20.

[0118] As an example, at least part of the circumferential contour of the first protrusion 111 matches the structure of the positioning hole 20. This reduces the gap between the first protrusion 111 and the positioning hole 20 and improves the shaking of the first container module 101.

[0119] In some examples, the connecting piece 13 penetrates and connects the first protrusion 111, the corner piece 10 of the first container module 101, and the connecting plate 12.

[0120] The second protrusion 112 penetrates the positioning hole 20 of the corner piece 10 of the second container module 102 and is positioned and matched with the positioning hole 20.

[0121] As an example, the circumferential profile of at least part of the second protrusion 112 matches the structure of the positioning hole 20. With the reduced gap between the second protrusion 112 and the positioning hole 20, the shaking of the second container module 102 is improved.

[0122] In some examples, the connecting piece 13 passes through and connects the second protrusion 112, the corner piece 10 of the second container module 102 and the connecting plate 12.

[0123] According to an embodiment of the present application, as shown in Figure 6 、 Figure 9 and Figure 10 , the connecting seat 11 further comprises a bearing plate 113, which is located between and connected to the first protrusion 111 and the second protrusion 112, and has an area greater than that of the first protrusion 111 and an area greater than that of the second protrusion 112 in a plane perpendicular to the first direction x. The bearing plate 113 is clamped between the corner piece 10 of the first container module 101 and the corner piece 10 of the second container module 102.

[0124] As an example, the bearing plate 113 has opposite first and second surfaces along the first direction x, the first protrusion 111 is connected to the first surface, and the corner piece 10 of the first container module 101 abuts against the first surface, and the second protrusion 112 is connected to the second surface, and the corner piece 10 of the second container module 102 abuts against the second surface.

[0125] In some examples, the area of the bearing plate 113 is greater than or equal to that of the corner piece 10 in a plane perpendicular to the first direction x.

[0126] In some examples, the bearing plate 113, the first protrusion 111 and the second protrusion 112 are integrally formed. This facilitates the processing and manufacturing of the connecting seat 11 and improves the overall structural strength of the connecting seat 11.

[0127] In these optional examples, the bearing plate 113 is located between and clamped between the corner piece 10 of the first container module 101 and the corner piece 10 of the second container module 102, and directly bears the bidirectional load, enabling uniform transmission of the force. Moreover, the bearing plate 113 has a large contact area with the corner piece 10, which effectively improves the local deformation between the connecting seat 11 and the corner piece 10 and improves the structural stability.

[0128] According to an embodiment of the present application, as shown in Figure 9 and Figure 10As shown, the carrier plate 113 includes a first edge 1131 and a second edge 1132 adjacent to and connected with each other, the first edge 1131 is arranged at a side of the carrier plate 113 away from the connecting plate 12 along the second direction y, the second edge 1132 is arranged at a side of the carrier plate 113 away from the connecting plate 12 along the third direction z, and an arc-shaped chamfer is arranged at a connection between the first edge 1131 and the second edge 1132, the first direction x, the second direction y and the third direction z are perpendicular to each other.

[0129] As an example, the carrier plate 113 is generally in a rectangular structure. The first edge 1131 and the second edge 1132 are located inside the carrier plate 113, that is, the side away from the connecting plate 12.

[0130] In some examples, along the second direction y, the two corner pieces 10 of the container module 100 are mirror-symmetrical, and the fixing assembly 1 cooperating with the two corner pieces 10 is also mirror-symmetrical. The first edge 1131 and the second edge 1132 connected by the arc-shaped chamfer are located inside the connecting seat 11.

[0131] In these optional examples, the arc-shaped chamfer serves as an identifier of the connecting seat 11, which is beneficial for the quick installation and positioning of the connecting seat 11.

[0132] According to an embodiment of the present application, as shown in Figure 6 , Figure 9 and Figure 10 , the carrier plate 113 includes a first protrusion 1133, the first protrusion 1133 is arranged at the first edge 1131, along the first direction x, both ends of the first protrusion 1133 protrude from the first edge 1131, and the first protrusion 1133 is located at a side of the corner piece 10 away from the connecting plate 12.

[0133] As an example, the first protrusion 1133 is arranged at one end of the first edge 1131 close to the arc-shaped chamfer.

[0134] In some examples, the first protrusion 1133 and the first edge 1131 are integrally formed. The first protrusion 1133 and the first edge 1131 have high connection strength.

[0135] When the connecting seat 11 is installed incorrectly, the first protrusion 1133 will interfere with the corner piece 10, so that the corner piece 10 and the connecting seat 11 cannot be installed in place. Therefore, the first protrusion 111 is used to form a constraint by interfering with the corner piece 10 when the connecting seat 11 is installed incorrectly, thereby improving the assembly accuracy of the connecting seat 11.

[0136] According to an embodiment of the present application, as shown in Figure 9 and Figure 10As shown, the bearing plate 113 includes a second protrusion 1134, which is arranged at the second edge 1132 and protrudes from the second edge 1132 at both ends in the first direction x, and is located at the side of the corner piece 10 away from the connecting plate 12. The second protrusion 112 is used to form a constraint by interfering with the corner piece 10 when the connecting seat 11 is installed incorrectly, so as to improve the assembly accuracy of the connecting seat 11.

[0137] As an example, the second protrusion 1134 is arranged at one end of the second edge 1132 close to the circular arc chamfer.

[0138] In some examples, the second protrusion 1134 and the second edge 1132 are integrally formed. The second protrusion 1134 and the second edge 1132 have high connection strength.

[0139] In some examples, the bearing plate 113 includes the first protrusion 1133 and the second protrusion 1134, which are located at both sides of the circular arc chamfer. The assembly constraint of the connecting piece 13 in two directions is realized, and the assembly accuracy of the connecting seat 11 is further improved.

[0140] According to one embodiment of the present application, as shown in Figure 9 and Figure 10 As shown, the bearing plate 113 includes a third edge 1135 and a fourth edge 1136 arranged adjacent to and connected to each other, the third edge 1135 is arranged at the side of the bearing plate 113 facing the connecting plate 12 in the second direction y, the fourth edge 1136 is arranged at the side of the bearing plate 113 facing the connecting plate 12 in the third direction z, and a chamfer is arranged at the connection between the third edge 1135 and the fourth edge 1136. The chamfer corresponds to the connecting plate 12, and the chamfer can be used to quickly identify whether the connecting seat 11 is installed correctly.

[0141] In some examples, the bearing plate 113 includes the first edge 1131 and the third edge 1135 arranged opposite to each other in the second direction y, and the second edge 1132 and the fourth edge 1136 arranged opposite to each other in the third direction z, and the first edge 1131 and the third edge 1135 are connected to the second edge 1132 and the fourth edge 1136 respectively.

[0142] According to one embodiment of the present application, the first edge 1131 is provided with an identification. When the connecting seat 11 is installed, the installation position of the connecting seat 11 can be quickly identified.

[0143] As an example, the identification can be a notch or a protrusion.

[0144] Optionally, the identification can be one of UP, 1 or 2. Wherein, 1 or 2 can be opposite to the identification 1 or 2 of the corner piece, to identify whether the connecting seat 11 is installed correctly.

[0145] According to one embodiment of the present application, the second edge 1132 is provided with an identification.

[0146] According to one embodiment of the present application, the surface of the bearing plate 113 facing the second protrusion 112 is provided with an identification. When the connecting seat 11 is installed, the installation position of the connecting seat 11 can be quickly identified, and the identification can effectively reduce the defect of reverse installation of the connecting seat 11.

[0147] As an example, the identification of the bearing plate 113 can be a notch or a recess.

[0148] Optionally, the identification of the bearing plate 113 is This face down.

[0149] As an example, the bearing plate 113 is integrally cast with the identification.

[0150] For reference, Figures 11-14 , Figure 11 is a structural schematic view of an angle of a fixing assembly of an energy storage device provided by one embodiment of the present application; Figure 12 is a structural schematic view of another angle of a fixing assembly of an energy storage device provided by one embodiment of the present application; Figure 13 is a left view of a fixing assembly of an energy storage device provided by one embodiment of the present application; Figure 14 is a front view of a fixing assembly of an energy storage device provided by one embodiment of the present application.

[0151] According to one embodiment of the present application, as Figures 11-14 shown, the first protrusion 111 includes a first guide portion 1111 and a first connecting portion 1112, the first guide portion 1111 and the first connecting portion 1112 are arranged along a first direction x, the first guide portion 1111 is connected to the first connecting portion 1112 and the bearing plate 113, the first guide portion 1111 passes through the positioning hole 20 of the first container module 101 and cooperates with the positioning hole 20, and the connecting piece 13 connects the first connecting portion 1112, the corner piece 10 of the first container module 101 and the connecting plate 12.

[0152] In some examples, in a plane perpendicular to the first direction x, the minimum area of the first guide portion 1111 is greater than the area of the first connecting portion 1112. This facilitates the insertion of the first protrusion 111 into the corner piece 10.

[0153] As an example, in a plane perpendicular to the first direction x, the area of the first guide portion 1111 gradually decreases in a direction pointing from the bearing plate 113 to the first connecting portion 1112.

[0154] In some examples, the circumferential profile of one end of the first guide portion 1111 facing the bearing plate 113 matches the structure of the positioning hole 20. This improves the stability of the cooperation between the first guide portion 1111 and the positioning hole 20.

[0155] In some examples, the first connecting portion 1112 is provided with a first assembly hole and a second assembly hole, the first assembly hole extending along the second direction y, and the second assembly hole extending along the third direction z. The fixing assembly 1 comprises a first connecting piece 131 and a second connecting piece 132, the first connecting piece 131 penetrating and connecting with the first assembly hole, and the second connecting piece 132 penetrating and connecting with the second assembly hole.

[0156] Optionally, the first assembly hole penetrates through the first connecting portion 1112.

[0157] Optionally, the second assembly hole penetrates through the first connecting portion 1112.

[0158] In some examples, the first connecting portion 1112 is tapered away from one end of the first guide portion 1111 along the first direction x. This facilitates the fast insertion of the first guide portion 1111 into the corner piece 10.

[0159] In these optional examples, such arrangement facilitates the fast installation and positioning of the connecting seat 11, and achieves the multi-directional connection between the fixing assembly 1 and the corner piece 10, thereby improving the connection stability therebetween.

[0160] According to one embodiment of the present application, as shown in Figures 11-14 The first guide portion 1111 comprises at least one inclined surface 11111, which is arranged on the side of the first guide portion 1111 away from the connecting plate 12.

[0161] In some examples, the inclined surface 11111 is arranged on the side of the first guide portion 1111 away from the connecting plate 12 along the second direction y; or, the inclined surface 11111 is arranged on the side of the first guide portion 1111 away from the connecting plate 12 along the third direction z.

[0162] In some examples, the first guide portion 1111 further comprises a vertical surface facing the connecting plate 12. After the first protrusion 111 and the corner piece 10 of the first container module 101 are installed in place, the vertical surface is in abutment with the hole wall of the positioning hole 20 of the corner piece 10.

[0163] During the installation of the corner piece 10 of the first container module 101 and the connecting seat 11, the corner piece 10 of the first container module 101 is relatively displaced along the inclined surface 11111 of the first guide portion 1111 and the connecting seat 11 until the vertical surface is in abutment with the hole wall of the positioning hole 20 of the corner piece 10, thereby achieving the installation of the connecting seat 11 in place.

[0164] In these optional examples, during the falling of the first container module 101, the corner piece 10 naturally slides along the inclined surface 11111 to the assembly position, thereby reducing the difficulty of the alignment between the corner piece 10 of the first container module 101 and the first protrusion 111.

[0165] According to an embodiment of the present application, as shown in Figures 11-14 The first guide portion 1111 includes adjacent and connected first and second inclined surfaces 11111a and 11111b, the first inclined surface 11111a is arranged at a side of the first guide portion 1111 away from the connecting plate 12 along the second direction y, and the second inclined surface 11111b is arranged at a side of the first guide portion 1111 away from the connecting plate 12 along the third direction z, the first, second and third directions x, y and z are perpendicular to each other. The first and second inclined surfaces 11111a and 11111b form a bidirectional guide structure, which can be adjusted in two directions simultaneously during the falling of the first container module 101, so as to improve the positioning accuracy of the first guide portion 1111 and the corner piece 10 of the first container module 101.

[0166] According to an embodiment of the present application, as shown in Figures 11-14 The second protrusion 112 includes a second guide portion 1121 and a second connecting portion 1122, the second guide portion 1121 and the second connecting portion 1122 are arranged along the first direction x, the second guide portion 1121 is connected to the second connecting portion 1122 and the bearing plate 113, the second guide portion 1121 passes through the positioning hole 20 of the second container module 102 and is used to cooperate with the positioning hole 20, and the connecting piece 13 connects the second connecting portion 1122, the corner piece 10 and the connecting plate 12.

[0167] In some examples, in a plane perpendicular to the first direction x, the minimum area of the second guide portion 1121 is greater than the area of the second connecting portion 1122. This is beneficial to realize the insertion of the second protrusion 112 into the corner piece 10.

[0168] For example, in a plane perpendicular to the first direction x, the area of the second guide portion 1121 gradually decreases in a direction of the bearing plate 113 pointing to the second connecting portion 1122.

[0169] In some examples, the second connecting portion 1122 is provided with a third assembly hole and a fourth assembly hole, the third assembly hole extends along the second direction y, and the fourth assembly hole extends along the third direction z. The fixing assembly 1 includes a first connecting piece 131 and a second connecting piece 132, the first connecting piece 131 passes through and is connected to the third assembly hole, and the second connecting piece 132 passes through and is connected to the fourth assembly hole.

[0170] Optionally, the third assembly hole penetrates through the second connecting portion 1122.

[0171] Optionally, the fourth assembly hole penetrates through the second connecting portion 1122.

[0172] In some examples, the second connecting portion 1122 is tapered away from the first guiding portion 1111 at one end in the first direction x. This facilitates the fast insertion of the second guiding portion 1121 into the corner piece 10.

[0173] In these optional examples, the arrangement facilitates the fast installation and positioning of the connecting seat 11 and achieves the multi-orientation connection between the fixed assembly 1 and the corner piece 10, thereby improving the connection stability between the two.

[0174] According to one embodiment of the present application, as shown in Figures 11-14 The second guiding portion 1121 includes at least one guiding surface 11211, which is arranged on the side of the first guiding portion 1111 away from the connecting plate 12. The guiding surface 11211 includes an inclined segment 11212 and a transition segment 11213. The inclined segment 11212 is connected to the end of the transition segment 11213 away from the bearing plate 113 and is arranged in an inclined manner towards the second connecting portion 1122.

[0175] In some examples, in a plane perpendicular to the first direction x, the area of the second guiding portion 1121 first remains unchanged and then decreases in the direction of the bearing plate 113 pointing to the second connecting portion 1122. It can be understood that the area of the second guiding portion 1121 corresponding to the transition segment 11213 is equal in the direction of the bearing plate 113 pointing to the second connecting portion 1122, and the area of the second guiding portion 1121 corresponding to the inclined segment 11212 gradually decreases in the direction of the bearing plate 113 pointing to the second connecting portion 1122.

[0176] Specifically, during the installation of the corner piece 10 of the second container module 102 and the connecting seat 11, the second protrusion 112 of the connecting seat 11 is inserted into the positioning hole 20 of the corner piece 10 of the second container module 102. During the insertion of the second protrusion 112, the guiding surface 11211 cooperates with the inner wall of the positioning hole 20 of the corner piece 10 to perform installation and positioning.

[0177] The guiding surface 11211 includes the inclined segment 11212 and the transition segment 11213, i.e., the guiding surface 11211 is partially arranged in an inclined manner. After the installation of the corner piece 10 of the second container module 102 and the connecting seat 11, the second guiding portion 1121 has a large gap with the positioning hole 20, thereby reserving alignment space for the first container module 101. When the first container module 101 falls, the gravity pushes the positioning hole 20 of the corner piece 10 of the first container module 101 to slide down along the complete inclined surface 11111 of the first protrusion 111 to the assembly position, while driving the connecting seat 11 to adjust slightly, thereby adjusting the installation position of the connecting seat 11 and the corner piece 10 of the first container module 101, so that the first container module 101 is aligned with the second container module 102.

[0178] According to one embodiment of the present application, as shown in Figures 11-14As shown, the second guide part 1121 comprises adjacent and connected first guide surface 11211a and second guide surface 11211b, the first guide surface 11211a is arranged at the side of the second guide part 1121 away from the connecting plate 12 along the second direction y, the second guide surface 11211b is arranged at the side of the second guide part 1121 away from the connecting plate 12 along the third direction z, the first direction x, the second direction y and the third direction z are perpendicular to each other. The first guide surface 11211a and the second guide surface 11211b form a two-way guide structure, when the connecting seat 11 is installed on the second container module 102, synchronous adjustment is performed in two directions to improve the positioning accuracy of the second guide part 1121 and the corner piece 10 of the second container module 102.

[0179] According to one embodiment of the present application, as shown in Figure 3 , Figures 4-8 As shown, the corner piece 10 is provided with a connecting hole 30, and the connecting piece 13 passes through the connecting hole 30 to connect the connecting seat 11, the corner piece 10 and the connecting plate 12. The connecting plate 12 comprises a plate body 121 and a limiting part 122, the plate body 121 is arranged at the outer side of the corner piece 10, and the limiting part 122 is arranged at the side of the plate body 121 facing the connecting seat 11. The limiting part 122 extends into the connecting hole 30 and is clamped with the corner piece 10.

[0180] In some examples, the limiting part 122 located in the connecting hole 30 is located between the connecting piece 13 and the inner wall of the connecting hole 30.

[0181] In some examples, the connecting plate 12 is provided with a through hole, the connecting piece 13 passes through the through hole, and the through hole is arranged in a spaced manner with the limiting part 122. The mutual interference between the limiting part 122 and the connecting piece 13 is reduced.

[0182] For example, at least part of the limiting part 122 is arc-shaped.

[0183] For example, at least part of the limiting part 122 is V-shaped.

[0184] In these optional examples, the limiting part 122 can realize the function of auxiliary support for the connecting plate 12, and when the connecting plate 12 is installed, the limiting part 122 is pre-positioned with the corner piece 10, and then locked and fixed by the connecting piece 13.

[0185] According to one embodiment of the present application, as shown in Figure 8 The fixing assembly 1 further comprises a connecting sleeve 14, the connecting sleeve 14 is sleeved on the outer side of the connecting piece 13, the connecting sleeve 14 comprises a main body part 141 and a flange 142 surrounding the main body part 141, the main body part 141 passes through the connecting plate 12 and the corner piece 10 and abuts against the connecting seat 11, and the flange 142 is clamped with the connecting plate 12.

[0186] Optionally, the connecting piece 13 is a bolt.

[0187] As an example, the length of the main body 141 between the connecting plate 12 and the connecting seat 11 is less than the distance between the connecting plate 12 and the connecting seat 11. When the bolt is locked, the flange 142 can press the connecting plate 12 on the corner piece 10, while improving the risk of easy falling of the bolt suspended locking. As the torque increases, the connecting plate 12 is locally deformed, so that the distance between the connecting plate 12 and the connecting seat 11 is reduced, at this time, the spacing between the flange 142 and the connecting seat 11 is compressed, until the main body 141 abuts the connecting seat 11, the bolt torque reaches the upper limit, and reaches the locking state.

[0188] In these optional examples, when the connecting piece 13 is locked with the connecting seat 11, the flange 142 is pressed on the connecting plate 12 by the connecting piece 13, and at the same time the force is transmitted to the connecting plate 12, so that the connecting plate 12 and the connecting seat 11 clamp the corner piece 10, realizing the fixation of the corner piece 10.

[0189] According to an embodiment of the present application, the energy storage device further comprises a unit module (not shown in the figure), which is stacked along the first direction x with the container module 100, and the fixing assembly 1 is further arranged between the unit module and the container module 100 and connected to the unit module and the container module 100. The application range of the fixing assembly 1 is improved.

[0190] The second aspect, as shown in Figure 9 and Figure 10 The present application provides a fixing assembly 1 of an energy storage device, which comprises a connecting seat 11 and a connecting plate 12. The connecting seat 11 is configured to pass through the positioning holes 20 of the corner pieces 10 of the adjacent two container modules 100 stacked along the first direction x respectively and extend into the corner pieces 10. The connecting plate 12 is arranged on at least one side of the connecting seat 11 perpendicular to the first direction x, and the connecting plate 12 is configured to be located outside the adjacent two container modules 100, and the connecting plate 12 is used to connect the connecting seat 11 and the adjacent two container modules 100.

[0191] The fixing assembly 1 provided by the present application comprises a connecting seat 11 and a connecting plate 12, the connecting seat 11 is positioned and matched with the adjacent two container modules 100 to limit the relative deviation of the adjacent two container modules 100 along the first direction x, and the connecting plate 12 is connected to the connecting seat 11 and the adjacent two container modules 100 to realize the connection and fixation of the adjacent two container modules 100. Through the fixing assembly 1, the connection and positioning of the adjacent two container modules 100 can be realized at the same time, and the risk of shaking and falling of the stacked multiple container modules 100 is improved.

[0192] According to one embodiment of the present application, the fixing assembly 1 further comprises a connecting piece 13, the connecting plate 12 is arranged outside the corner piece 10, the connecting piece 13 passes through and connects the connecting seat 11, the corner piece 10 and the connecting plate 12.

[0193] The present application provides an energy storage device, such as Figures 1-14 As described above, the energy storage device comprises a plurality of container modules 100 and a fixing assembly 1.

[0194] The plurality of container modules 100 are stacked along a first direction x, and at least one container module 100 is configured to accommodate a battery. The container module 100 comprises a corner piece 10, and the corner piece 10 has a positioning hole 20. The two adjacent container modules 100 comprise a first container module 101 and a second container module 102. The fixing assembly 1 is arranged between at least two adjacent container modules 100, and the fixing assembly 1 comprises a connecting seat 11, a connecting plate 12, a connecting piece 13 and a connecting sleeve 14.

[0195] The connecting plate 12 is arranged on at least one side of the connecting seat 11 along a direction perpendicular to the first direction x and outside the two adjacent container modules 100. The connecting plate 12 comprises a first plate body 12a and a second plate body 12b. The first plate body 12a is arranged on one side of the corner piece 10 along a second direction y, and the second plate body 12b is arranged on one side of the corner piece 10 along a third direction z. The first plate body 12a and the second plate body 12b are connected. The connecting sleeve 14 is arranged outside the connecting piece 13. The connecting sleeve 14 comprises a main body portion 141 and a flange 142 surrounding the main body portion 141. The main body portion 141 passes through the connecting plate 12 and the corner piece 10 and abuts against the connecting seat 11. The flange 142 is clamped with the connecting plate 12.

[0196] The connecting piece 13 comprises a first connecting piece 131 and a second connecting piece 132. The first connecting piece 131 and the second connecting piece 132 are arranged at intervals along the first direction x.

[0197] The connecting seat 11 is configured to be positioned and matched with two adjacent container modules 100 along the first direction x. The connecting seat 11 comprises a first protrusion 111, a second protrusion 112 and a bearing plate 113, the first protrusion 111 is arranged on the top of the second protrusion 112 along the first direction x, the bearing plate 113 is located between the first protrusion 111 and the second protrusion 112 and connected to the first protrusion 111 and the second protrusion 112, the area of the bearing plate 113 is greater than the area of the first protrusion 111 in the plane perpendicular to the first direction x, the area of the bearing plate 113 is greater than the area of the second protrusion 112, and the bearing plate 113 is clamped between the corner piece 10 of the first container module 101 and the corner piece 10 of the second container module 102. The bearing plate 113 comprises adjacent and connected first and second edges 1131 and 1132, adjacent and connected third and fourth edges 1135 and 1136, and first and second protrusions 1133 and 1134. The first edge 1131 is arranged on the side of the bearing plate 113 away from the connecting plate 12 along the second direction y, the second edge 1132 is arranged on the side of the bearing plate 113 away from the connecting plate 12 along the third direction z, the third edge 1135 is arranged on the side of the bearing plate 113 facing the connecting plate 12 along the second direction y, the fourth edge 1136 is arranged on the side of the bearing plate 113 facing the connecting plate 12 along the third direction z, and an arc-shaped chamfer is arranged at the connection between the first edge 1131 and the second edge 1132, and a cut corner is arranged at the connection between the third edge 1135 and the fourth edge 1136. The first protrusion 1133 is arranged on the first edge 1131 and protrudes from the first edge 1131 at both ends along the first direction x, and the first protrusion 1133 is located on the side of the corner piece 10 away from the connecting plate 12. The second protrusion 1134 is arranged on the second edge 1132 and protrudes from the second edge 1132 at both ends along the first direction x, and the second protrusion 1134 is located on the side of the corner piece 10 away from the connecting plate 12. The connecting plate 12 comprises a plate body 121 and a limiting portion 122, the plate body 121 is arranged on the outer side of the corner piece 10, the limiting portion 122 is arranged on the side of the plate body 121 facing the connecting seat 11, the limiting portion 122 extends into the connecting hole 30 and is clamped with the corner piece 10.

[0198] The first protrusion 111 penetrates the positioning hole 20 of the first container module 101 and is positioned and matched with the positioning hole 20. The first protrusion 111 comprises a first guide portion 1111 and a first connecting portion 1112. The first guide portion 1111 and the first connecting portion 1112 are arranged along the first direction x. The first guide portion 1111 is connected to the first connecting portion 1112 and the bearing plate 113. The first guide portion 1111 penetrates the positioning hole 20 of the first container module 101 and is matched with the positioning hole 20. The first connecting piece 131 penetrates the first connecting portion 1112, the corner piece 10 of the first container module 101 and the first connecting plate 12 and connects the first connecting portion 1112, the corner piece 10 of the first container module 101 and the first connecting plate 12. The first guide portion 1111 comprises a first inclined surface 11111a and a second inclined surface 11111b which are adjacent and connected. The first inclined surface 11111a is arranged on the side of the first guide portion 1111 away from the connecting plate 12 along the second direction y. The second inclined surface 11111b is arranged on the side of the first guide portion 1111 away from the connecting plate 12 along the third direction z. The first direction x, the second direction y and the third direction z are perpendicular to each other.

[0199] The first direction x, the second direction y and the third direction z are perpendicular to each other.

[0200] Although the present application has been described with reference to preferred embodiments, it is to be understood that various modifications can change the scope of the present application to the full extent the equivalent thereof are intended to be within this application, and that each of the technical features mentioned in the various embodiments can be combined in an arbitrary 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, characterized in that, include: Multiple container modules are stacked along a first direction, at least one of the container modules is configured to accommodate a battery, and the container module includes corner pieces having positioning holes. A fixing component is disposed between at least two adjacent container modules. The fixing component includes a connecting seat and a connecting plate. The connecting seat passes through the positioning holes of the two adjacent container modules along the first direction and extends into the corner piece. The connecting plate is disposed on at least one side of the connecting seat perpendicular to the first direction and located outside the two adjacent container modules. The connecting plate is connected to the connecting seat and the two adjacent container modules.

2. The energy storage device according to claim 1, characterized in that, The fixing assembly further includes a connector that passes through the connector base, the corner piece, and the connecting plate and connects the connector base, the corner piece, and the connecting plate.

3. The energy storage device according to claim 2, characterized in that, The connecting plate includes a first plate and a second plate. The first plate is disposed on one side of the corner piece along the second direction, and the second plate is disposed on one side of the corner piece along the third direction. The first plate and the second plate are connected, and the first direction, the second direction, and the third direction are perpendicular to each other.

4. The energy storage device according to claim 3, characterized in that, The connector includes a first connector and a second connector, wherein the first connector is connected to the first plate and the connector base, and the second connector is connected to the second plate and the connector base.

5. The energy storage device according to claim 4, characterized in that, The first connector and the second connector are spaced apart along the first direction.

6. The energy storage device according to claim 2, characterized in that, The two adjacent container modules include a first container module and a second container module; The connecting seat includes a first protrusion and a second protrusion. The first protrusion is disposed on the top of the second protrusion along the first direction. The first protrusion passes through the positioning hole of the first container module and is positioned and engaged with the positioning hole. The second protrusion passes through the positioning hole of the second container module and is positioned and engaged with the positioning hole.

7. The energy storage device according to claim 6, characterized in that, The connecting seat further includes a support plate, which is located between the first protrusion and the second protrusion and connected to the first protrusion and the second protrusion. On a plane perpendicular to the first direction, the area of ​​the support plate is larger than the area of ​​the first protrusion and the area of ​​the second protrusion. The support plate is clamped between the corner piece of the first container module and the corner piece of the second container module.

8. The energy storage device according to claim 7, characterized in that, The support plate includes an adjacent and connected first edge and a second edge. The first edge is located on the side of the support plate away from the connecting plate along a second direction. The second edge is located on the side of the support plate away from the connecting plate along a third direction. An arc-shaped chamfer is provided at the connection between the first edge and the second edge. The first direction, the second direction, and the third direction are perpendicular to each other.

9. The energy storage device according to claim 8, characterized in that, The support plate includes a first protrusion disposed on the first edge. Along the first direction, both ends of the first protrusion protrude beyond the first edge, and the first protrusion is located on the side of the corner piece away from the connecting plate.

10. The energy storage device according to claim 8, characterized in that, The support plate includes a second protrusion disposed on the second edge. Along the first direction, both ends of the second protrusion protrude beyond the second edge, and the second protrusion is located on the side of the corner piece away from the connecting plate.

11. The energy storage device according to claim 8, characterized in that, The support plate includes an adjacent and connected third edge and a fourth edge. The third edge is located on the side of the support plate facing the connecting plate along the second direction, and the fourth edge is located on the side of the support plate facing the connecting plate along the third direction. The connection between the third edge and the fourth edge is provided with a chamfer.

12. The energy storage device according to claim 8, characterized in that, The first edge is marked; and / or, The second edge is marked.

13. The energy storage device according to claim 7, characterized in that, The first protrusion includes a first guide portion and a first connecting portion, the first guide portion and the first connecting portion are arranged along the first direction, the first guide portion is connected to the first connecting portion and the bearing plate, the first guide portion passes through the positioning hole of the first container module and cooperates with the positioning hole, and the connector connects the first connecting portion, the corner piece of the first container module and the connecting plate.

14. The energy storage device according to claim 13, characterized in that, The first guide portion includes at least one inclined surface, which is disposed on the side of the first guide portion opposite to the connecting plate.

15. The energy storage device according to claim 14, characterized in that, The first guide portion includes an adjacent and connected first inclined surface and a second inclined surface. The first inclined surface is located on the side of the first guide portion away from the connecting plate along a second direction. The second inclined surface is located on the side of the first guide portion away from the connecting plate along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

16. The energy storage device according to claim 7, characterized in that, The second protrusion includes a second guide portion and a second connecting portion. The second guide portion and the second connecting portion are arranged along the first direction. The second guide portion is connected to the second connecting portion and the bearing plate. The second guide portion passes through the positioning hole of the second container module and is used to cooperate with the positioning hole. The connector connects the second connecting portion, the corner piece of the second container module and the connecting plate.

17. The energy storage device according to claim 16, characterized in that, The second guide portion includes at least one guide surface, which is disposed on the side of the second guide portion away from the connecting plate. The guide surface includes an inclined section and a transition section. The inclined section is connected to the end of the transition section away from the bearing plate and is inclined towards the second connecting portion.

18. The energy storage device according to claim 17, characterized in that, The second guide portion includes an adjacent and connected first guide surface and a second guide surface. The first guide surface is disposed on the side of the second guide portion away from the connecting plate along a second direction. The second guide surface is disposed on the side of the second guide portion away from the connecting plate along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

19. The energy storage device according to claim 2, characterized in that, The corner piece is provided with a connecting hole, and the connector passes through the connecting hole to connect the connecting seat, the corner piece and the connecting plate; The connecting plate includes a plate body and a limiting part. The plate body is disposed on the outside of the corner piece, and the limiting part is disposed on the side of the plate body facing the connecting seat. The limiting part extends into the connecting hole and engages with the corner piece.

20. The energy storage device according to claim 2, characterized in that, The fixing component further includes a connecting sleeve, which is sleeved on the outside of the connector. The connecting sleeve includes a main body and a flange surrounding the main body. The main body passes through the connecting plate and the corner piece and abuts against the connecting seat. The flange is engaged with the connecting plate.

21. The energy storage device according to claim 1, characterized in that, The energy storage device further includes a generator module, which is stacked with the container module along the first direction. Along the first direction, the fixing component is also disposed between the generator module and the container module and connected to the generator module and the container module.

22. A fixing component, characterized in that, include: The connector is configured to pass through the positioning holes of the corner fittings of two adjacent container modules stacked along the first direction and extend into the corner fittings. A connecting plate is disposed on at least one side of the connecting seat along a direction perpendicular to the first direction, and the connecting plate is configured to be located outside two adjacent container modules, the connecting plate being used to connect the connecting seat and the two adjacent container modules.

23. The fixing component according to claim 22, characterized in that, The fixing assembly further includes a connector that passes through the connector base, the corner piece, and the connecting plate and connects the connector base, the corner piece, and the connecting plate.

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