Energy storage device, connecting member, and energy storage system

Abstract

An energy storage device (1), comprising: a plurality of compartments (10) which are stacked in a first direction; first connecting members provided on the compartments (10); second connecting members configured to be connected to the first connecting members of the compartments (10) adjacent to each other in the first direction, so as to limit the connected compartments (10) in a second direction and a third direction; and third connecting members configured to be connected to both the first connecting members and the second connecting members, so as to limit the connected compartments (10) in the first direction. The energy storage device can simplify the connection process between adjacent compartments, and can improve the stability of the plurality of connected compartments. Further provided are a connecting member and an energy storage system.

Description

Energy storage devices, connectors and energy storage systems

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510192549.3, filed on February 20, 2025, entitled “Energy Storage Device and Energy Storage System”, the entire contents of which are incorporated herein by reference as if their entirety were reproduced herein. Technical Field

[0003] This application relates to the field of energy storage technology, and in particular to an energy storage device, a connector, and an energy storage system. Background Technology

[0004] In modern logistics, warehousing and transportation, warehouses are important tools for storing and transferring goods. They are usually stacked to reduce the space occupied by the warehouses. To ensure the reliability of the stacked warehouses, adjacent warehouses are usually assembled and locked together.

[0005] In related technologies, the assembly method of the silo is relatively complicated, and the stability of the silo after assembly needs to be improved. Summary of the Invention

[0006] This application aims to address at least one of the technical problems existing in the prior art. This application proposes an energy storage device, connector, and energy storage system, which can achieve the connection between stacked compartments in a first direction through at least a first connector, a second connector, and a third connector, thereby simplifying the assembly process between adjacent compartments and improving the stability of multiple compartments after assembly.

[0007] This application provides an energy storage device, including: multiple compartments, a first connector, a second connector, and a third connector. The multiple compartments are stacked along a first direction. Each compartment houses a battery device and / or a control module of the energy storage device. The first connector is disposed on a compartment. The second connector is configured to connect to the first connector of a compartment adjacent to it along the first direction to limit the connected compartments in a second direction and a third direction. The plane formed by the second direction and the third direction is perpendicular to the first direction. The third connector is configured to connect both the first connector and the second connector to limit the connected compartments in the first direction.

[0008] According to the energy storage device of this application embodiment, the assembly of adjacent compartments is achieved by the cooperation of the first connector, the second connector and the third connector, which simplifies the assembly process of adjacent compartments, so that the stacking of compartments can be completed by the staff without complicated operations, effectively improving the assembly efficiency of adjacent compartments. It can also achieve reliable fixation of the compartments in the first direction, the second direction and the third direction, which can also improve the fixation stability and simplify the structure of the energy storage device.

[0009] According to some embodiments of this application, the first connector and the second connector are engaged in a second direction and / or a third direction.

[0010] According to some embodiments of this application, the second connector includes a clamping portion and mounting portions located on both sides of the clamping portion, and the first connector has a connecting portion, wherein the mounting portion and the connecting portion abut against each other in a second direction and / or a third direction.

[0011] According to some embodiments of this application, at least a portion of the mounting portion is inserted into the connecting portion, and / or at least a portion of the connecting portion is inserted into the mounting portion, so as to connect adjacent compartments.

[0012] According to some embodiments of this application, the mounting part is constructed as a positioning protrusion, the connecting part is constructed as a positioning cavity, and the positioning protrusion is inserted into the positioning cavity.

[0013] According to some embodiments of this application, the mounting part and the clamping part are connected by a transition part, and the cross-sectional area of ​​the transition part gradually decreases in the direction away from the clamping part to define a guide surface.

[0014] According to some embodiments of this application, the guide surface is located on at least one side of the mounting portion in a second direction, and / or on at least one side of the mounting portion in a third direction.

[0015] According to some embodiments of this application, the end of the mounting portion away from the clamping portion is further provided with a protrusion, the cross-sectional area of ​​the protrusion gradually decreases in the direction away from the clamping portion, and is adapted to first extend into the positioning cavity.

[0016] According to some embodiments of this application, the connecting portion includes two end plates opposite each other in a first direction, one end plate is provided with an opening, the minimum projected profile size of the opening in the first direction is greater than the maximum projected profile size of the protrusion, and the maximum projected profile size of the opening in the first direction is equal to the maximum projected profile size of the transition portion.

[0017] According to some embodiments of this application, another end plate is provided with an insertion hole, and at least a portion of the protrusion is adapted to extend into the insertion hole.

[0018] According to some embodiments of this application, a step portion is defined between the protrusion and the mounting portion, and the connecting portion further includes: a surrounding plate disposed on the end plate, the surrounding plate being provided with a protrusion that overlaps with the step portion.

[0019] According to some embodiments of this application, a first fixing hole is provided on the enclosure, and a third connector passes through the first fixing hole and is connected to a second connector.

[0020] According to some embodiments of this application, a foolproof part is provided on the second connector. The foolproof part is located on the side of the second connector facing the second direction and / or the third direction, and the projection outline of the foolproof part in the first direction is outside the projection outline of the first connector.

[0021] According to some embodiments of this application, the third connector is detachably connected to the first connector and the second connector.

[0022] According to some embodiments of this application, the energy storage device further includes: a fourth connector, which is connected to an adjacent compartment along a first direction to limit the connection of the connected compartments in the first, second, and third directions.

[0023] According to some embodiments of this application, the fourth connector is connected to at least one of the first connector, the second connector, and the third connector.

[0024] According to some embodiments of this application, the fourth connector includes: a first portion and a second portion, the first portion extending along a plane defined by a first direction and a second direction, the second portion extending along a plane defined by the first direction and a third direction, and the first portion and the second portion being connected, the first portion and / or the second portion being connected to the first connector, the second connector and the third connector.

[0025] According to some embodiments of this application, the extension dimension of the first part in the second direction is greater than or equal to the length dimension of the first connector in the second direction, and the extension dimension of the second part in the third direction is greater than or equal to the length dimension of the first connector in the third direction.

[0026] According to some embodiments of this application, a second fixing hole is provided on the first part and / or the second part, and the third connector passes through the second fixing hole to connect with the first connector and the second connector.

[0027] According to some embodiments of this application, a limiting member is provided on the side of the first part facing the first connector and / or on the side of the second part facing the first connector. The limiting member is provided adjacent to the second fixing hole and surrounds at least a portion of the outer contour of the third connector.

[0028] According to some embodiments of this application, at least a portion of the third connector extends along the second direction and is connected to the second connector, and at least a portion of the third connector extends along the third direction and is connected to the second connector, and the third connector extending along the second direction and the third connector extending along the third direction are staggered in the first direction.

[0029] According to some embodiments of this application, the first connector is constructed as a mating corner piece, the second connector is constructed as a connecting lock seat, and the third connector is constructed as a fixed connector. The mating corner piece is disposed on the outer peripheral wall of the compartment body and has a connecting portion. Both ends of the connecting lock seat have mounting portions. The mounting portions at both ends of the connecting lock seat are respectively inserted and mated with the connecting portions of the adjacent mating corner pieces to limit the connected compartment bodies in the second and third directions. Each mating corner piece and the corresponding connecting lock seat are fixedly connected by a fixed connector to limit the connected compartment bodies in the first direction.

[0030] According to some embodiments of this application, the connecting part is a positioning cavity, the mounting part is a positioning protrusion, and the positioning protrusion is located inside the positioning cavity.

[0031] According to some embodiments of this application, the mating corner piece includes an end plate and a surrounding plate, with end plates provided at both ends of the surrounding plate in a first direction, and the end plates and surrounding plate enclosing a positioning cavity.

[0032] According to some embodiments of this application, a first fixing hole is provided on one of the two side panels opposite each other in the second direction and on one of the two side panels opposite each other in the third direction. The fixing connector passes through the first fixing hole and is connected to the positioning protrusion.

[0033] According to some embodiments of this application, in two end plates opposite each other in a first direction, one end plate is provided with an opening, and a positioning protrusion extends into the positioning cavity through the opening.

[0034] According to some embodiments of this application, another end plate is provided with an insertion hole, and the end of the positioning protrusion extends into the insertion hole.

[0035] According to some embodiments of this application, the end of the positioning protrusion is provided with a protrusion that protrudes outwards, and the protrusion is located inside the insertion hole.

[0036] According to some embodiments of this application, the cross-sectional area of ​​the protrusion gradually decreases in the direction away from the positioning protrusion.

[0037] According to some embodiments of this application, the connecting lock seat further includes a clamping part, which has two mounting parts on both sides in the first direction, and the clamping part clamps between adjacent mating corner pieces.

[0038] According to some embodiments of this application, the energy storage device further includes a foolproof part that extends along a first direction, is disposed on the clamping part, and is located outside the adjacent mating corner piece.

[0039] According to some embodiments of this application, the error prevention part is formed as a cylinder extending along a first direction.

[0040] According to some embodiments of this application, the connecting lock seat includes a guide surface, which is formed on the positioning protrusion and connected to the clamping portion. The guide surface is formed as an inclined surface and mates with the mating corner piece.

[0041] According to some embodiments of this application, the guide surface and the foolproof part are disposed opposite each other in a second direction or a third direction.

[0042] According to some embodiments of this application, the fourth connector of the energy storage device is constructed as a coupling, which is located on the outside of two adjacent mating corner pieces. The fixed connector passes through the coupling, the mating corner pieces and is fixedly connected to the connecting lock seat to lock the connected compartments.

[0043] According to some embodiments of this application, the coupling includes a first part and a second part that are intersecting and connected to a retaining plate in a second direction and a retaining plate in a third direction, respectively, via a fixed connecting member.

[0044] According to some embodiments of this application, the coupling is provided with a limiting member extending into the mating corner member, the limiting member being located in the first part and / or the second part.

[0045] According to some embodiments of this application, the limiting member extends into the positioning cavity of the mating corner member.

[0046] According to some embodiments of this application, the connecting member is provided with a second fixing hole that mates with the fixed connecting member, and at least a portion of the limiting member is disposed around the second fixing hole.

[0047] This application also provides a connector for connecting adjacent compartments in a first direction, including: a clamping part and a mounting part connected to the clamping part, the mounting part being located on both sides of the clamping part in the first direction, and the mounting part being used to connect to a first connector on the compartment.

[0048] According to some embodiments of this application, the mounting part is constructed as a positioning protrusion, and the mounting part is connected to the clamping part through a transition part. The cross-sectional area of ​​the transition part gradually decreases in the direction away from the clamping part to define a guide surface.

[0049] According to some embodiments of this application, a protrusion is provided at the end of the mounting portion away from the clamping portion, and the cross-sectional area of ​​the protrusion gradually decreases in the direction away from the clamping portion.

[0050] According to some embodiments of this application, a foolproof part is provided on the clamping part, the foolproof part extends along a first direction and is located outside the first connector.

[0051] This application also provides an energy storage system, including the energy storage device in the above embodiments.

[0052] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0053] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0054] Figure 1 is a schematic diagram of the battery pack proposed in an embodiment of this application;

[0055] Figure 2 is a schematic diagram of the assembly of the compartment body and mating corner pieces according to an embodiment of this application;

[0056] Figure 3 is a schematic diagram of the mating corner piece shown in Figure 2;

[0057] Figure 4 is a schematic diagram of the connecting lock seat proposed in an embodiment of this application;

[0058] Figure 5 is a schematic diagram of the connecting lock seat shown in Figure 4 from another angle;

[0059] Figure 6 is a schematic diagram of the connecting lock seat shown in Figure 4 from another angle;

[0060] Figure 7 is an assembly diagram of the connecting components and mating corner pieces proposed in an embodiment of this application;

[0061] Figure 8 is an assembly diagram of the connecting components and connectors proposed in the embodiments of this application;

[0062] Figure 9 is a schematic diagram of the connection components and connectors shown in Figure 8 from another angle.

[0063] Figure 10 is a schematic diagram of the connection components and connectors shown in Figure 8 from another angle.

[0064] Figure 11 is a cross-sectional view AA shown in Figure 10;

[0065] Figure 12 is an assembly diagram of the connecting components, mating corner pieces, and connecting pieces proposed in the embodiments of this application;

[0066] Figure 13 is another assembly diagram of the connecting components, mating corner pieces, and couplings shown in Figure 11;

[0067] Figure 14 is a BB cross-sectional view shown in Figure 13;

[0068] Figure 15 is a schematic diagram of the connection components, mating corner pieces, and connecting pieces shown in Figure 12 from another angle.

[0069] Figure 16 is a schematic diagram of the fit between the chamber body and the fixed connecting parts and the connecting parts according to the embodiment of this application;

[0070] Figure 17 is a schematic diagram of the energy storage system proposed in an embodiment of this application. Detailed Implementation

[0071] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0072] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0073] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0074] The battery device mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. Multiple battery cells in the battery device can be connected in series, parallel, or mixed via a busbar. For example, the battery device may consist of multiple battery cells arranged and fixed to form an independent module; as an example, the battery device can be formed by bundling multiple battery cells together with cable ties. As an example, the battery device can also be housed in a housing by directly fixing multiple battery cells to a housing box. That is, the battery device can be a battery module or a battery pack.

[0075] As an example, the housing may include a first sub-unit and a second sub-unit. The first and second sub-units are fastened together to form a closed space inside the housing for storing individual battery cells; here, "closed" refers to covering or shutting off, and can be sealed or unsealed; the first sub-unit may be a top cover or a bottom plate. As an example, the housing may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are respectively connected to the frame, so that the interior of the housing forms a closed space for storing individual battery cells.

[0076] In this application, a battery cell may include a secondary battery, a primary battery, etc. A secondary battery refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. Battery cells may be lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, sodium lithium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this application does not limit the types. Battery cells may be cylindrical, flat, cuboid, or other shapes, and this application does not limit the shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application does not limit the types either.

[0077] For example, a single battery cell typically includes a housing, a cell assembly, and an electrolyte. The housing is used to house the cell assembly and the electrolyte, and the housing has at least one positive electrode post and at least one negative electrode post. The cell assembly includes one or more electrode assemblies, which are formed by stacking or winding positive electrode sheets, negative electrode sheets, and separators.

[0078] The positive electrode generally includes a positive current collector and a positive active material layer. The positive active material layer is directly or indirectly coated on the positive current collector. The positive current collector without the positive active material layer protrudes from the positive current collector with the positive active material layer. The positive current collector without the positive active material layer serves as a positive electrode tab. Multiple positive electrode tabs are stacked together and form an electrical connection with the positive electrode post. For example, the multiple stacked positive electrode tabs can be directly soldered to the positive electrode post to form an electrical connection; or, the battery cell assembly can also include a positive electrode adapter piece. The multiple stacked positive electrode tabs are soldered to one end of the positive electrode adapter piece, and the other end of the positive electrode adapter piece is soldered to the positive electrode post, so that the positive electrode tabs and the positive electrode post form an electrical connection.

[0079] The negative electrode generally includes a negative current collector and a negative active material layer. The negative active material layer is directly or indirectly coated on the negative current collector. The negative current collector without the negative active material layer protrudes from the negative current collector with the negative active material layer. The negative current collector without the negative active material layer serves as a negative electrode tab. Multiple negative electrode tabs are stacked together and form an electrical connection with the negative electrode post. For example, the stacked negative electrode tabs can be directly welded to the negative electrode post to form an electrical connection; alternatively, the battery cell assembly may also include a negative electrode adapter piece. The stacked negative electrode tabs are welded to one end of the negative electrode adapter piece, and the other end of the negative electrode adapter piece is welded to the negative electrode post, so that the negative electrode tabs and the negative electrode post form an electrical connection. The material of the separator is not limited; for example, it can be polypropylene or polyethylene.

[0080] Currently, with the rapid development of energy storage technology, especially the continuous upgrading and iteration of large-cell technology, the energy density of battery devices is constantly increasing. To facilitate the transportation and storage of battery devices, multiple battery devices can be placed in a storage unit for transport and storage. During storage and transportation, storage units are usually stacked to reduce their footprint. To ensure the reliability of the stacked storage units, adjacent units typically need to be assembled and locked together. However, the assembly methods for these storage units are relatively complex, and the stability of the assembled units needs further improvement.

[0081] Based on the above considerations, in order to better solve the reliability problem of the stacked configuration of the storage compartments, this application proposes an energy storage device. The energy storage device includes multiple compartments, a first connector, a second connector, and a third connector. The multiple compartments are stacked along a first direction. Each compartment includes a housing and a first connector. The housing has a cavity for placing a battery device. The first connector is located on the outer peripheral wall of the housing and has a connecting portion. The second connector has mounting portions on both sides in the first direction. The two mounting portions are respectively inserted and engaged with the connecting portions of the adjacent first connectors. Each first connector and the corresponding second connector are fixedly connected by the third connector.

[0082] In the above technical solution, the mounting portions on both sides of the second connector are respectively inserted into the connecting portions of the adjacent first connector, and the second connector is located on the outer peripheral wall of the housing, providing more operating space for the installation of the first and second connectors. Simultaneously, the insertion-fitting method simplifies the assembly process of adjacent compartments and improves the assembly efficiency of multiple compartments. Each second connector and its corresponding first connector are connected by a third connector, making the assembly of adjacent compartments more stable and improving the stability of the compartments after stacking. Therefore, through the combined action of the first, second, and third connectors, the assembly process of adjacent compartments is simplified, and the stability of multiple compartments after assembly is improved.

[0083] For ease of explanation, the following embodiments provide a detailed description of the structure of the battery device 50 and the battery cell 60 of this application.

[0084] Please refer to Figure 1, which is an exploded view of the structure of a battery cell 60 used in a battery device 50 according to some embodiments of this application. The battery device 50 includes a housing 70 and a plurality of battery cells 60, with the battery cells 60 housed within the housing 70. The housing 70 provides assembly space for the battery cells 60, and can employ various structures. In some embodiments, the housing 70 may include a first sub-housing 72 and a second sub-housing 74, which overlap each other, together defining a receiving cavity for accommodating the battery cells 60. The second sub-box 74 can be a hollow structure open at one end, and the first sub-box 72 can be a plate-like structure. The first sub-box 72 covers the open side of the second sub-box 74 so that the first sub-box 72 and the second sub-box 74 together define a receiving cavity; alternatively, the first sub-box 72 and the second sub-box 74 can both be hollow structures open on one side (as shown in Figure 1), with the open side of the first sub-box 72 covering the open side of the second sub-box 74. Of course, the receiving box 70 formed by the first sub-box 72 and the second sub-box 74 can be of various shapes, such as a cylinder or a cuboid.

[0085] In the battery device 50, multiple battery cells 60 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that some of the battery cells 60 are connected in series while others are connected in parallel. Multiple battery cells 60 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 60 is housed within a housing 70 to form the battery device 50. The battery device 50 may also include other structures; for example, it may include a busbar for electrical connection between the multiple battery cells 60.

[0086] This application provides an energy storage device 1, including: a plurality of compartments 10, a first connector, a second connector, and a third connector. The plurality of compartments 10 are stacked along a first direction. Each compartment 10 houses a battery device 50 and / or a control module of the energy storage device 1. The first connector is disposed on a compartment 10. The second connector is configured to connect to the first connector of a compartment 10 adjacent to it along the first direction to limit the connected compartment 10 in a second direction and a third direction. The plane formed by the second direction and the third direction is perpendicular to the first direction. The third connector is configured to connect both the first connector and the second connector to limit the connected compartment 10 in the first direction.

[0087] It should be noted that the first direction (as shown in AA' direction in Figure 2) can be the height direction of the silo 10, while the second and third directions can be the length direction and width direction of the silo 10 perpendicular to the first direction, and one of the second and third directions is the length direction and the other is the width direction. This application does not make any further limitations.

[0088] As shown in Figures 2, 3, 4, and 7, multiple compartments 10 are stacked along a first direction, that is, two or more compartments 10 are stacked along the first direction. Each compartment 10 can be provided with one or more first connectors. The first connectors can be arranged on the length edge and width edge of the compartment 10. The second connector can be connected to two opposite first connectors on the adjacent compartments in the first direction at the same time to limit the compartment 10 in the second and third directions. Then, the third connector is connected to the first connector and the second connector, which can further fix the relative position of the first connector and the second connector in the first direction, thereby achieving relative fixation of adjacent compartments 10 in the first direction.

[0089] It is understandable that the first and second connectors can be assembled along the first direction and are limited in the second and third directions. That is, the assembly direction of the first and second connectors is consistent with the stacking direction of the compartment, which can simplify the assembly steps. The third connector can be connected to the second and first connectors from the second or third direction. The installation direction of the third connector is perpendicular to the first direction. During the assembly process, the probability of interference causing difficulty in assembly is also lower, thereby improving the overall assembly convenience.

[0090] Meanwhile, the first connector, the second connector and the third connector can limit the adjacent compartments 10 in the first direction, the second direction and the third direction, without the need to add other limiting structures, and can also simplify the structure of the energy storage device 1.

[0091] According to the embodiment of this application, the energy storage device 1 uses a first connector, a second connector, and a third connector to assemble adjacent compartments 10, which simplifies the assembly process of adjacent compartments 10. This allows workers to stack the compartments 10 without performing complex operations, effectively improving the assembly efficiency of adjacent compartments 10. It also enables reliable fixing of the compartments 10 in the first, second, and third directions, improving fixing stability and simplifying the structure of the energy storage device 1.

[0092] According to some embodiments of this application, the first connector and the second connector are engaged in a second direction and / or a third direction.

[0093] Specifically, the first connector and the second connector can engage in a stop-and-go engagement in the second direction to limit the adjacent compartment 10 in the second direction. In the third direction upward, the first connector and the second connector can be connected by their own structure (e.g., plug-in, snap-fit, etc.) to limit the adjacent compartment 10 in the third direction upward. Alternatively, the first connector and the second connector can engage in a stop-and-go engagement in the third direction to limit the adjacent compartment 10 in the third direction upward. In the second direction, the first connector and the second connector can be connected by their own structure to limit the adjacent compartment 10 in the second direction. Of course, the first connector and the second connector can also engage in a stop-and-go engagement in both the second direction and the third direction upward to simultaneously limit the connected compartment 10 in both the second direction and the third direction upward.

[0094] It should be noted that a stop-and-go fit refers to a fit pair between two components (such as the first connector and the second connector) where at least one surface is in contact to form a mutual push-and-go fit relationship. This can achieve positioning and limiting in the direction of surface-to-surface contact. For example, a stop-and-go fit in the second direction can achieve positioning and limiting in the second direction, and a stop-and-go fit in the third direction upward can achieve positioning and limiting in the third direction upward.

[0095] Therefore, by using the first connector and the second connector to achieve a stop-locking action in at least one of the second and third directions, the assembly difficulty between the first connector and the second connector can be further reduced, and the assembly convenience can be improved.

[0096] As shown in Figures 3, 4 and 5, according to some embodiments of this application, the second connector includes a clamping portion 224 and mounting portions 220 located on both sides of the clamping portion 224, and the first connector has a connecting portion 140, with the mounting portion 220 and the connecting portion 140 abutting each other in a second direction and / or a third direction.

[0097] In other words, the stop-locking engagement between the first connector and the second connector in at least one of the second and third directions can be achieved by the mounting part 220 and the connecting part 140, while the clamping part 224 can separate the first connectors of adjacent compartments 10 from each other.

[0098] In this way, on the one hand, the mounting part 220 is located on both sides of the clamping part 224 in the first direction. The second connector can be installed with the connecting part 140 on one of the compartments 10 in the first direction first, and then the second connector can be installed with the connecting part 140 on the other compartment 10 in the first direction. This way, at least one of the two compartments 10 is kept fixed, while the other compartment 10 moves its own first connector synchronously to achieve assembly. This can further simplify the assembly steps and reduce the assembly difficulty. On the other hand, the clamping part 224 can support the first connector, which helps to disperse the pressure generated when the compartments 10 are stacked, so that the first connector is not easily damaged under pressure, which can improve the service life of the first connector.

[0099] It is understandable that the mounting part 220 and the connecting part 140 abut against each other in the second direction and / or the third direction upward, as shown in Figure 7. The mounting part 220 and the connecting part 140 are engaged with pin holes (i.e., the columnar structure is inserted into the hole structure) to achieve simultaneous abutment in the second direction and the third direction upward. Alternatively, both the mounting part 220 and the connecting part 140 can be constructed as irregular plates (e.g., U-shaped plates) to achieve interlocking in the second direction and the third direction upward while the mounting part 220 and the connecting part 140 are inserted into each other. Alternatively, the mounting part 220 and the connecting part 140 can abut against each other in the second direction or the third direction upward, while in the third direction or the second direction, the mounting part 220 and the connecting part 140 achieve snap-fit ​​and plug-in through their own structures to simultaneously achieve limiting in the second direction and the third direction upward.

[0100] Furthermore, in embodiments where the mounting portion 220 and the connecting portion 140 are configured to interlock to achieve a stop-and-go fit in the second direction and the third direction, the mounting portion 220 and the connecting portion 140 may also be configured as a plug-in structure.

[0101] For example, at least a portion of the mounting portion 220 is inserted into the connecting portion 140, and / or at least a portion of the connecting portion 140 is inserted into the mounting portion 220 to connect adjacent compartments 10.

[0102] In other words, both the mounting part 220 and the connecting part 140 are constructed as plate structures, and the mounting part 220 can define at least one first slot, which is inserted into the connecting part 140. The connecting part 140 defines at least one second slot, which is inserted into the mounting part 220. Alternatively, the first slot and the second slot can be inserted into each other. The outer plate structure defining the first slot and the second slot is used for interlocking push-limiting to achieve interlocking between the mounting part 220 and the connecting part 140 in the second direction and the third direction.

[0103] Referring to Figures 2, 3 and 7, according to some embodiments of this application, the mounting part 220 is configured as a positioning protrusion 222, the connecting part 140 is configured as a positioning cavity 142, and the positioning protrusion 222 is inserted into the positioning cavity 142.

[0104] Therefore, by inserting the positioning protrusion 222 into the positioning cavity 142, the mating area of ​​the first connector and the second connector is increased, thereby enhancing the connection strength between adjacent compartments 10. This helps to resist various external forces that may be encountered during transportation and storage, such as vibration and impact, and ensures the overall stability of the stacked structure of the compartments 10.

[0105] As shown in Figures 4, 6 and 8, according to some embodiments of this application, the mounting part 220 and the clamping part 224 are connected by a transition part 227, the cross-sectional area of ​​the transition part 227 gradually decreases in the direction away from the clamping part 224, so as to define the guide surface 226.

[0106] Specifically, the clamping portion 224 has mounting portions 220 protruding from both sides of its first direction. One end of the mounting portion 220 adjacent to the clamping portion 224 (which is plate-shaped) is connected to the clamping portion 224 via a transition portion 227. The transition portion 227 makes the transition connection area between the clamping portion 224 and the mounting portion 220 smoother, improving the structural strength and reliability of the second connector. Furthermore, the cross-sectional area of ​​the transition portion 227 gradually decreases in the direction away from the clamping portion 224, making the guide surface 226 a slope, which not only serves to guide... The guide surface 226 can guide the positioning protrusion 222 into the positioning cavity 142, making the assembly process of the positioning protrusion 222 and the positioning cavity 142 smoother and improving the assembly efficiency. At the same time, the inclined guide surface 226 can reduce the impact and friction during the assembly of the positioning protrusion 222 and the positioning cavity 142, thereby reducing the wear between parts, helping to extend the service life of the connecting lock seat 22 and the mating corner piece 14, reducing maintenance costs, and also increasing the contact area between the first connecting piece and the second connecting piece, so as to further improve the fixing stability and reliability of the adjacent compartment 10.

[0107] Furthermore, in the actual manufacturing process, due to the influence of various factors, the size and shape of the positioning protrusion 222 may have certain errors. By designing the guide surface 226 as a slope, these minor errors can be compensated to a certain extent, so that even if the size of the positioning protrusion 222 is slightly off, they can still be assembled smoothly, which improves the flexibility and adaptability of assembling the first connector and the second connector.

[0108] It is understood that the guide surface 226 is located on at least one side of the mounting portion 220 in the second direction, and / or on at least one side of the mounting portion 220 in the third direction.

[0109] The guide surface 226 is located on at least one side of the mounting part 220 in the second direction, which can reduce the difficulty of aligning the first connector and the second connector in the second direction. The guide surface 226 is located on at least one side of the mounting part 220 in the third direction, which can reduce the difficulty of aligning the first connector and the second connector in the third direction.

[0110] As shown in FIG5, according to some embodiments of the present application, the end of the mounting part 220 away from the clamping part 224 is also provided with a protrusion 222a. The cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the clamping part 224 and is suitable for first extending into the positioning cavity 142.

[0111] Specifically, the cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the clamping part 224, so that the side of the protrusion 222a can be formed as an inclined surface, and it can be inserted into the positioning cavity 142 first. The protrusion 222a can guide the installation part 220 into the positioning cavity 142, and can also further reduce the assembly difficulty and improve the assembly efficiency.

[0112] As shown in Figures 3 and 6, according to some embodiments of this application, the connecting portion 140 includes two end plates 144 opposite each other in a first direction. One end plate 144 is provided with an opening 144a. The minimum projected profile size of the opening 144a in the first direction is greater than the maximum projected profile size of the protrusion 222a. The maximum projected profile size of the opening 144a in the first direction is equal to the maximum projected profile size of the transition portion 227.

[0113] Specifically, openings 144a are formed on the end plates 144 of the two first connectors on adjacent compartments 10, and these two end plates 144 abut against the two sides of the clamping part 224 in the first direction. The inner wall surface of the opening 144a can be constructed as an inclined surface with an angle to the first direction. The minimum projected profile size of the opening 144a in the first direction is greater than the maximum projected profile size of the protrusion 222a, which makes it easier for the protrusion 222a to enter the opening 144a and reduces the difficulty of alignment. At the same time, the maximum projected profile size of the opening 144a in the first direction is equal to the maximum projected profile size of the transition part 227, which allows the guide surface 226 to fit with the inner wall of the opening 144a, thereby further increasing the contact area between the first connector and the second connector, and allowing at least part of the contact stress between the first connector and the second connector to have a non-right angle with the first direction, thereby improving the force between adjacent compartments 10 and improving the fixation stability and reliability of the compartments 10.

[0114] Referring to Figures 7 and 14, according to some embodiments of this application, another end plate 144 is provided with an insertion hole 142a, and at least a portion of the protrusion 222a is adapted to extend into the insertion hole 142a.

[0115] In other words, the plug-in design of the protrusion 222a and the insertion hole 142a effectively restricts the degree of freedom of the positioning protrusion 222 in the positioning cavity 142, reduces the risk of the positioning protrusion 222 accidentally sliding or falling off when subjected to external force, enhances the stability of the connection lock seat 22 and the mating corner piece 14 assembly, and ensures the overall robustness of the stacked structure of the compartment 10.

[0116] In addition, the design of the protrusion 222a and the insertion hole 142a makes the assembly process more intuitive and simple. The operator only needs to align the protrusion 222a on the positioning protrusion 222 with the insertion hole 142a in the positioning cavity 142 and gently push it in to complete the initial connection. This simplifies the assembly process of the mating corner piece 14 and the connecting lock seat 22 and improves the assembly efficiency of adjacent compartments 10.

[0117] As shown in FIG7, according to some embodiments of the present application, a step portion 228 is defined between the protrusion 222a and the mounting portion 220, and the connecting portion 140 further includes a surrounding plate 146 surrounding the end plate 144, and a protrusion 147 that overlaps with the step portion 228 is provided on the surrounding plate 146.

[0118] Therefore, by overlapping the protrusion 147 and the step 228, not only can the contact area between the first connector and the second connector be increased to improve the fixing effect, but the third connector can also pass through the area where the protrusion 147 is located and further connect with the second connector. The size of the mating area between the third connector and the first connector can also be increased to improve the connection stability between the second connector and the third connector, and the resistance of the third connector to shear stress can also be improved.

[0119] As shown in Figure 3, according to some embodiments of this application, a first fixing hole 148 is provided on the enclosure 146, and a third connector passes through the first fixing hole 148 and is connected to the second connector.

[0120] Specifically, a first fixing hole 148 is opened on each of the two adjacent enclosures 146 so that a third connector in the second direction and a third connector in the third direction can be connected to the positioning protrusion 222, which can realize bidirectional fastening in the second direction and the third direction. This can reduce the probability of the hopper 10 shaking in the second direction or the third direction, causing the locking limit to fail in the first direction, thereby improving the fixing reliability of the hopper 10.

[0121] Referring to Figures 2 and 6, according to some embodiments of this application, a foolproof part 30 is provided on the second connector. The foolproof part 30 is located on the side of the second connector facing the second direction and / or the third direction, and the projected outline of the foolproof part 30 in the first direction is outside the projected outline of the first connector.

[0122] In this way, the foolproof part 30 can extend along the first direction, and the compartment 10 is stacked along the first direction. That is, the foolproof part 30 extends along the stacking direction of the compartment 10. The design of the foolproof part 30 means that when assembling the mating corner piece 14 and the connecting lock seat 22, it must be done in the extension direction of the foolproof part 30. When assembling in other directions, it will be blocked by the foolproof part 30, which effectively prevents incorrect operation during the assembly process, such as reverse assembly or misalignment, thereby improving the accuracy of assembly. At the same time, due to the guiding effect of the foolproof part 30, the staff can identify the correct assembly direction more quickly, which facilitates the improvement of the assembly efficiency of the mating corner piece 14 and the connecting lock seat 22.

[0123] Furthermore, since the anti-mistake part 30 is located outside the adjacent first connector (i.e. outside the projected outline), there can be a certain distance between the anti-mistake part 30 and the first connector, so that the anti-mistake part 30 is less likely to interfere with the assembly of the first connector and the second connector, making the assembly process of the first connector and the second connector smoother.

[0124] It should be noted that the foolproof part 30 can be provided on the clamping part 224, such as on one side of the clamping part 224 in the second direction, or on one side of the clamping part 224 in the third direction, or the foolproof part 30 can be provided on both one side of the clamping part 224 in the second direction and the side in the third direction.

[0125] Meanwhile, the anti-mistake part 30 can also push against the first connector to further improve the fixing reliability and stability. Furthermore, the anti-mistake part 30 can be integrally formed with the clamping part 224, which can further improve the structural strength of the second connector.

[0126] As shown in Figure 7, according to some embodiments of this application, the third connector is detachably connected to the first connector and the second connector.

[0127] In other words, the third connector can be fixed to the first and second connectors in various detachable forms, such as snap-fit ​​or screw-fit, which can improve the ease of disassembly between adjacent compartments 10.

[0128] As shown in Figures 8, 9, 12, 14 and 15, according to some embodiments of this application, the energy storage device 1 further includes: a fourth connector, which is connected to the adjacent compartment 10 along the first direction to limit the connection of the connected compartment 10 in the first direction, the second direction and the third direction.

[0129] In this way, the third connector is connected to the first connector and the second connector to improve the fixation stability and reliability of the adjacent compartments 10. Furthermore, the fourth connector can be connected to the compartments 10 to further improve the fixation stability of the adjacent compartments 10.

[0130] As shown in Figure 14, according to some embodiments of this application, the fourth connector is connected to at least one of the first connector, the second connector, and the third connector.

[0131] Specifically, the fourth connector can be connected to the first connector, or the fourth connector can be connected to the second connector, or the fourth connector can be connected to the third connector, or the fourth connector can be connected to the first connector, the second connector, and the third connector. By setting the fourth connector, the structural strength of the connecting assembly structure composed of the first connector, the second connector, the third connector, and the fourth connector can be higher, the fixing and limiting effect of the chamber 10 can be better, the probability of damage after bearing load is lower, and the service life is longer.

[0132] As shown in Figure 8, according to some embodiments of this application, the fourth connector includes: a first portion 42 and a second portion 44. The first portion 42 extends along a plane defined by a first direction and a second direction, and the second portion 44 extends along a plane defined by the first direction and a third direction. The first portion 42 and the second portion 44 are connected, and the first portion 42 and / or the second portion 44 are connected to the first connector, the second connector and the third connector.

[0133] Thus, the first part 42 and the second part 44 can define a generally L-shaped outline, and the first part 42 and the second part 44 can respectively block the first connector and the second connector on one side in the second direction and on the third upward side. At least one of the first part 42 and the second part 44 is connected to the first connector, the second connector and the third connector. The first part 42 and the second part 44 respectively push against the first connector on one side in the second direction and on the third upward side, which can further improve the fixing stability and reliability of the adjacent compartment 10.

[0134] As shown in Figures 8, 15 and 16, according to some embodiments of this application, the extension dimension of the first part 42 in the second direction is greater than or equal to the length dimension of the first connector in the second direction, and the extension dimension of the second part 44 in the third direction is greater than or equal to the length dimension of the first connector in the third direction.

[0135] Thus, under the premise of achieving the above-mentioned technical effects, by further setting a fourth connector, the fixation reliability and stability can be improved. Moreover, the first part 42 and the second part 44 of the fourth connector can respectively shield the first connector on one side of the second direction and the third direction side, which can serve as an additional layer of protection, reducing the risk of the first and second connectors being directly exposed to the external environment, such as avoiding sun exposure, rain, impact, etc., thereby improving the service life of the first and second connectors.

[0136] According to some embodiments of this application, a second fixing hole 48 is provided on the first part 42 and / or the second part 44, and the third connector passes through the second fixing hole 48 to connect with the first connector and the second connector.

[0137] Therefore, the third connector can pass through the second fixing hole 48 to simultaneously connect and fix the first connector, the second connector and the fourth connector, which can further simplify the assembly steps and improve the connection stability.

[0138] According to some embodiments of this application, a limiting member 46 is provided on the side of the first part 42 facing the first connector and / or the side of the second part 44 facing the first connector. The limiting member 46 is provided adjacent to the second fixing hole 48 and surrounds at least a portion of the outer contour of the third connector.

[0139] Referring to Figures 8-11 and 14, in some embodiments, a limiting member 46 can be provided on the side of the first part 42 facing the first connector and the side of the second part 44 facing the first connector. The limiting member 46 can extend into the first connector and can surround at least part of the outer contour of the third connector, thereby forming a physical constraint. This effectively restricts the relative movement between the first connector and the fourth connector, so that the first connector, the second connector and the fourth connector can maintain a relatively stable positional relationship when subjected to force. This avoids loosening or failure of the connection due to movement, and facilitates the improvement of the stability of the fixed connection of the first connector, the second connector and the fourth connector, thereby improving the stability when multiple compartments 10 are stacked.

[0140] It is understandable that by setting a limiting member 46 on the first part 42 and / or the second part 44, the relative movement between the first connector and the fourth connector can be suppressed, thereby reducing the probability of the third connector becoming loose and improving the fixing effect. In addition, during the process of the third connector passing through the second fixing hole 48, the limiting member 46 can support the third connector and reduce the difficulty of the third connector passing through the fourth connector and the first connector in sequence and connecting with the second connector.

[0141] As shown in Figures 8, 10, 11, 12, 13 and 14, at least a portion of the third connector extends along the second direction and is connected to the first connector, and at least a portion of the third connector extends along the third direction and is connected to the first connector, and the third connector extending along the second direction and the third connector extending along the third direction are staggered in the first direction.

[0142] Therefore, on the one hand, interference between the third connector extending along the second direction and the third connector extending along the third direction can be avoided. On the other hand, the length of the third connector can be set to be longer so that its length can penetrate the positioning protrusion 222, thereby increasing the length of the connection area between the positioning protrusion 222 and the third connector in the second and third directions, which can further improve the connection reliability and stability.

[0143] In the embodiments of this application, the first connector is configured as a mating corner piece 14, the second connector is configured as a connecting lock seat 22, the third connector is configured as a fixed connector 24, and the fourth connector is configured as a connecting piece 40.

[0144] In some embodiments, as shown in Figures 2, 3, and 7, this application provides an energy storage device 1. The energy storage device 1 includes: multiple compartments 10, mating corner pieces 14, and connecting lock seats 22. The mating corner pieces 14 are disposed on the compartments 10 (e.g., disposed on the corner area of ​​the housing 12 of the compartment 10). The multiple compartments 10 are stacked along a first direction. The compartments 10 contain the battery device and / or control module of the energy storage device 1. The mating corner pieces 14 are disposed on the compartments 10. The connecting lock seats 22 are configured to connect with the mating corner pieces 14 of the adjacent compartments 10 along the first direction to limit the connected compartments 10 in a second direction and a third direction. The fixing connector 24 is configured to simultaneously connect the mating corner pieces 14 and the connecting lock seats 22 to limit the connected compartments 10 in the first direction.

[0145] In other words, the connecting lock seat 22 is connected to the two mating corner pieces 14 along the first direction, so that the connecting lock seat 22 and the two mating corner pieces 14 are connected and engaged to achieve the limiting in the second direction and the third direction. The plane formed by the second direction and the third direction is perpendicular to the first direction. Then, the connecting lock seat 22 and the mating corner pieces 14 are fixed in the second direction or the third direction by the fixing connector 24 to achieve the locking and fixing of the chamber 10 in the first direction.

[0146] In this way, through the connection and engagement of the connecting lock seat 22 and the mating corner piece 14 in the first direction, supplemented by the locking and fixing of the fixing member 24 in the second or third direction, the stacking and the connection and engagement in the first direction can be realized simultaneously, which simplifies the assembly process of adjacent compartments 10, so that the staff can complete the stacking of compartments 10 without performing complicated operations, effectively improving the assembly efficiency of adjacent compartments 10. The locking and engagement of the mating corner piece 14, the connecting lock seat 22 and the fixing member 24 can realize the reliable fixing of the compartments 10 in the first, second and third directions, and can also improve the fixing stability.

[0147] Furthermore, the energy storage device 1 may also include a connector 40, with multiple compartments 10 stacked along a first direction. Each compartment 10 houses the battery device and / or control module of the energy storage device 1. A mating corner piece 14 is disposed on the compartment 10. A connecting lock seat 22 is configured to connect with the mating corner piece 14 of the adjacent compartment 10 along the first direction to limit the connected compartment 10 in the second and third directions. The connector 40 is configured to connect with the compartment 10 extending along the first direction to limit the connected compartment 10 in the first, second, and third directions. The fixing connector 24 is configured to simultaneously connect the mating corner piece 14, the connecting lock seat 22, and the connector 40 to lock the connected compartment 10.

[0148] Specifically, the connecting lock seat 22 can be inserted into the two mating corner pieces 14 along the first direction, so that the connecting lock seat 22 and the two mating corner pieces 14 can be inserted and engaged to achieve limiting in the second direction and the third direction. The plane formed by the second direction and the third direction is perpendicular to the first direction. Then, the connecting member 40 is connected to the connecting lock seat 22 and the mating corner pieces 14 to achieve limiting in the first direction, the second direction and the third direction. The fixing connecting member 24 fixes the connecting lock seat 22, the mating corner pieces 14 and the fixing member 40 in the second direction or the third direction to achieve locking and fixing of the compartment 10 in the first direction.

[0149] Thus, under the premise of achieving the above-mentioned technical effects, by further setting the connecting part 40, the fixing reliability and stability can be improved. In addition, the connecting part 40, as an extra layer of protection, can reduce the risk of the mating corner piece 14 and the connecting lock seat 22 being directly exposed to the external environment, such as avoiding sun exposure, rain, impact, etc., thereby improving the service life of the mating corner piece 14 and the connecting lock seat 22.

[0150] Energy storage device 1 includes: multiple compartments 10 and a connecting assembly 20 (the connecting assembly 20 includes a fixing connector 24 and a connecting lock seat 22). The multiple compartments 10 are stacked along a first direction. Each compartment 10 includes a housing 12 and a mating corner piece 14. The housing 12 has a receiving cavity 11 for placing a battery device 50 (for accommodating the battery device and / or control module of the energy storage device 1, etc.). The mating corner piece 14 is located on the outer peripheral wall of the housing 12 (such as the corner area of ​​the housing 12). The mating corner piece 14 has... The connecting part 140 and the connecting assembly 20 include a connecting lock seat 22 and a fixed connector 24. Both ends of the connecting lock seat 22 are provided with mounting parts 220. The mounting parts 220 at both ends of the connecting lock seat 22 are respectively inserted and engaged with the connecting parts 140 of the adjacent mating corner pieces 14 to limit the connected compartment 10 in the second direction and the third direction. Each mating corner piece 14 and the corresponding connecting lock seat 22 are fixedly connected by the fixed connector 24 to limit the connected compartment 10 in the first direction.

[0151] As can be seen, multiple compartments 10 are stacked along the first direction to reduce the space occupied by the compartments 10 in other directions, facilitating the transfer and storage of the compartments 10. The compartment 12 has a receiving cavity 11 for placing the battery device 50, providing a relatively sealed environment for the battery device 50, making it less susceptible to damage during transfer and storage, thus improving the reliability of the compartment 10. It can be understood that when the battery device 50 is placed in the receiving cavity 11 of the compartment 10, the battery device 50 may or may not include a receiving box 70; the compartment 10 can be a container or a cabinet, and the battery device 50 is placed inside the container or cabinet for transfer or storage.

[0152] The dimensions of the storage body 10 can be those of a standard container or a non-standard container. For example, the height of the storage body 10 may be less than that of a standard container, and the length and width of the storage body 10 may be the same as those of a standard container.

[0153] Furthermore, the corner fitting 14 is located on the outer peripheral wall of the housing 12, providing a larger operating space for the insertion and engagement of the corner fitting 14 and the connecting lock seat 22. This makes it less likely for the housing 12 to interfere with the assembly of the corner fitting 14 and the connecting lock seat 22, thus improving the assembly efficiency of adjacent compartments 10. Moreover, the mounting portions 220 at both ends of the connecting lock seat 22 are respectively inserted and engaged with the connecting portions 140 of the adjacent corner fitting 14. By assembling adjacent compartments 10 through insertion and engagement, the assembly process of adjacent compartments 10 is simplified, allowing workers to complete the stacking of compartments 10 without performing complex operations, effectively improving the assembly efficiency of adjacent compartments 10.

[0154] Each mating corner piece 14 and its corresponding connecting lock seat 22 are connected by a fixing connector 24, which makes the assembly of adjacent compartments 10 more stable. This improves the stability of the compartments 10 after stacking, reduces the possibility of the compartments 10 loosening or collapsing due to vibration, collision, or other factors during transportation or storage, and further ensures the safety of the objects inside the compartments 10. Furthermore, when it is necessary to separate the stacked compartments 10, simply releasing the fixing connector 24 allows for easy separation of adjacent compartments 10 without the need for complex tools or excessive force. This is of great significance for quickly responding to changes in logistics needs and flexibly adjusting the warehouse layout.

[0155] For example, multiple compartments 10 are stacked vertically. Each compartment 10 includes a housing 12 and multiple mating corner pieces 14. The multiple mating corner pieces 14 are fixed (e.g., welded) to the upper and lower sides of the housing 12, and each mating corner piece 14 is located at one of the four corners of the upper and lower sides. The operator can first align and insert the mating corner pieces 14 of the lower compartment 10 with the connecting lock seat 22, then align and insert the mating corner pieces 14 of the upper compartment 10 with the connecting lock seat 22, and finally fix the mating corner pieces 14 of different compartments 10 to the same connecting lock seat 22 through the fixing connector 24. This improves the stability of the compartments 10 after stacking, so that the battery device 50 is more stable and less prone to damage during transportation and storage.

[0156] It is understood that the storage body 10 can have multiple mating corner pieces 14, and the multiple mating corner pieces 14 are connected to different connecting lock seats 22 respectively. By connecting adjacent storage bodies 10 at multiple points, it is easier to improve the structural strength of the stacked storage bodies 10, so that the storage bodies 10 are more stable during transportation and storage.

[0157] Optionally, the fixing connector 24 is configured to allow the mating corner piece 14 and the connecting lock seat 22 to be detachably installed. For example, the fixing connector 24 is a threaded fastener (such as a screw). This makes it easier to install and remove the mating corner piece 14 and the connecting lock seat 22, facilitating subsequent maintenance and repair, while also making the overall structure more compact and saving space.

[0158] Please refer to Figures 3-7. According to some embodiments of this application, one of the connecting part 140 and the mounting part 220 is configured as a positioning protrusion 222 and the other is configured as a positioning cavity 142, and the positioning protrusion 222 is inserted into the positioning cavity 142.

[0159] Therefore, the connecting part 140 and the mounting part 220 are plugged into each other to achieve simultaneous stacking and assembly in the first direction, which can reduce the assembly difficulty and improve the assembly efficiency.

[0160] In some embodiments, the connecting portion 140 is a positioning cavity 142, and the mounting portion 220 is a positioning protrusion 222, with the positioning protrusion 222 located inside the positioning cavity 142.

[0161] As can be seen, by inserting the positioning protrusion 222 into the positioning cavity 142, the mating area of ​​the mating corner piece 14 and the connecting lock seat 22 is increased, thereby enhancing the connection strength between adjacent compartments 10. This helps to resist various external forces that may be encountered during transportation and storage, such as vibration and impact, and ensures the overall stability of the stacked structure of the compartments 10.

[0162] Referring to Figures 3-7, in some embodiments, the fixing connector 24 fixes the corresponding mating corner piece 14 and the mounting part 220. The fixing connector 24 can fix the positioning protrusion 222 in the positioning cavity 142, so that the fit between the connecting lock seat 22 and the mating corner piece 14 is more stable and less likely to loosen or separate due to external forces (such as vibration, wind, etc.). This can effectively prevent the warehouse body 10 from tilting, collapsing or other safety accidents during the stacking process, ensure the safety of personnel and goods, and effectively improve the stability of the stacked warehouse body 10 during transportation and storage.

[0163] Please refer to Figures 3-7 and 14. In some embodiments, the inner wall of the positioning cavity 142 is provided with an insertion hole 142a, and the end of the positioning protrusion 222 is provided with a protrusion 222a protruding therefrom, and the protrusion 222a is located in the insertion hole 142a.

[0164] As can be seen, the plug-in design of the protrusion 222a and the insertion hole 142a effectively restricts the degree of freedom of the positioning protrusion 222 in the positioning cavity 142, reduces the risk of the positioning protrusion 222 accidentally sliding or falling off when subjected to external force, enhances the stability of the connection lock seat 22 and the mating corner piece 14 assembly, and ensures the overall robustness of the stacked structure of the compartment 10.

[0165] In addition, the design of the protrusion 222a and the insertion hole 142a makes the assembly process more intuitive and simple. The operator only needs to align the protrusion 222a on the positioning protrusion 222 with the insertion hole 142a in the positioning cavity 142 and gently push it in to complete the initial connection. This simplifies the assembly process of the mating corner piece 14 and the connecting lock seat 22 and improves the assembly efficiency of adjacent compartments 10.

[0166] Referring to Figures 4-7 and 14, in some embodiments, the cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the positioning protrusion 222. As a result, the cross-sectional area of ​​the part of the protrusion 222a that mates with the insertion hole 142a gradually increases with continuous insertion, reducing the positioning requirements of the protrusion 222a and the insertion hole 142a. Even if the initial positioning of the protrusion 222a and the insertion hole 142a is not very precise, the protrusion 222a can gradually adapt and smoothly enter the insertion hole 142a, which simplifies the assembly process between adjacent compartments 10. At the same time, since the protrusion 222a can gradually adapt to the shape of the insertion hole 142a during the insertion process, even if there are small assembly errors, it is not easy to affect the correct assembly of the protrusion 222a and the insertion hole 142a, reducing connection instability caused by assembly errors.

[0167] Referring to Figures 2 and 3, in some embodiments, the mating corner piece 14 includes an end plate 144 and a surrounding plate 146. The surrounding plate 146 has end plates 144 at both ends in a first direction. The end plates 144 and the surrounding plate 146 define a positioning cavity 142. One of the end plates 144 has an opening 144a. The positioning protrusion 222 extends into the positioning cavity 142 through the opening 144a. The clamping part 224 is clamped between adjacent end plates 144.

[0168] As can be seen, the mating corner fitting 14 defines the positioning cavity 142 through the end plate 144 and the surrounding plate 146. The surrounding plate 146 supports the end plates 144 at both ends, giving the mating corner fitting 14 good structural strength and improving its service life. Simultaneously, one end plate 144 has an opening 144a through which the positioning protrusion 222 extends into the positioning cavity 142, simplifying the assembly process of the positioning protrusion 222 and the positioning cavity 142 and improving the assembly efficiency of adjacent compartments 10. Furthermore, the positioning cavity 142 is defined by the end plate 144 and the surrounding plate 146, making the structure of the mating corner fitting 14 relatively simple and easy to manufacture. In some examples of this application, one end plate 144 of the mating corner fitting 14 can be defined by the side wall of the housing 12 where the mating corner fitting 14 is located.

[0169] Furthermore, the clamping part 224 can support adjacent end plates 144, which helps to disperse the pressure generated when the compartments 10 are stacked, so that the end plates 144 are less likely to be damaged under pressure, thus improving the service life of the mating corner pieces 14. In other embodiments of this application, the mating corner pieces 14 include a surrounding plate 146, which defines a positioning cavity 142. The surrounding plate 146 has open ends at both ends in the first direction, and the positioning protrusion 222 extends into the positioning cavity 142 through the open ends. That is, the positioning protrusion 222 can extend into the positioning cavity 142 through the open end of either end of the surrounding plate 146 in the first direction, which simplifies the assembly process of the positioning protrusion 222 and the positioning cavity 142. At the same time, the surrounding plate 146 defines the positioning cavity 142, which further simplifies the structure of the mating corner pieces 14, facilitates manufacturing, and effectively improves the production efficiency of the mating corner pieces 14. The clamping part 224 clamps directly between adjacent side panels 146, which helps to disperse the pressure generated when the storage compartments 10 are stacked, so that the side panels 146 are not easily damaged under pressure, and the service life of the mating corner pieces 14 is improved.

[0170] It should be noted that a first fixing hole 148 is provided on one of the two opposing panels 146 in the second direction and on one of the two opposing panels 146 in the third direction. The fixing connector 24 passes through the first fixing hole 148 and is connected to the positioning protrusion 222.

[0171] Specifically, a first fixing hole 148 is opened on each of the two adjacent enclosures 146, so that a fixing connector 24 in the second direction and a fixing connector 24 in the third direction can be connected to the positioning protrusion 222, which can realize bidirectional fastening in the second direction and the third direction. This can reduce the probability of the hopper 10 shaking in the second direction or the third direction, causing the locking limit to fail in the first direction, thereby improving the fixing reliability of the hopper 10.

[0172] The first fixing hole 148 can be configured as a waist hole.

[0173] As shown in Figures 3 and 7, in the two end plates 144 that are opposite each other in the first direction, one end plate 144 is provided with an opening 144a, and the positioning protrusion 222 extends into the positioning cavity 142 through the opening 144a.

[0174] Therefore, the positioning protrusion 222 can be avoided by opening 144a, so as to avoid interference during the assembly process. The opening 144a can also push and limit the positioning protrusion 222 on the periphery, so as to limit the compartment 10 in the second direction and the third direction by inserting in the first direction.

[0175] Specifically, another end plate 144 is provided with an insertion hole 142a, the inner wall of the positioning cavity 142 is provided with an insertion hole 142a, the end of the positioning protrusion 222 extends into the insertion hole 142a, the end of the positioning protrusion 222 is provided with a protrusion 222a protruding from it, the protrusion 222a is located inside the insertion hole 142a, and the cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the positioning protrusion 222.

[0176] Therefore, by setting the protrusion 222a, assembly guidance can be achieved, further reducing the assembly difficulty. The protrusion 222a can extend into the insertion hole 142a, and the area of ​​the contact and limiting area between the positioning protrusion 222 and the mating corner piece 14 can be larger, so as to improve the limiting effect in the second direction and the third direction.

[0177] Referring to Figures 4-7, in some embodiments, the connecting lock seat 22 further includes a clamping part 224. The clamping part 224 has two mounting parts 220 on both sides in the first direction, that is, the clamping part 224 is located between the mounting parts 220 at both ends. The clamping part 224 clamps between adjacent mating corner pieces 14, and separates adjacent mating corner pieces 14 by clamping part 224. The clamping part 224 can support adjacent mating corner pieces 14, improve the load-bearing capacity of mating corner pieces 14. At the same time, the clamping part 224 facilitates the distribution of pressure generated when the compartment 10 is stacked, reduces the structural deformation or damage of mating corner pieces 14 caused by excessive local pressure, and improves the service life of mating corner pieces 14.

[0178] Please refer to Figures 3-6, 11 and 12. In some embodiments, the energy storage device 1 further includes a foolproof part 30, which extends along a first direction and is disposed on the clamping part 224 and located outside the adjacent mating corner piece 14.

[0179] As can be seen, the foolproof part 30 extends along the first direction, and the compartment 10 is stacked along the first direction. That is, the foolproof part 30 extends along the stacking direction of the compartment 10. The design of the foolproof part 30 means that when assembling the mating corner piece 14 and the connecting lock seat 22, it must be done in the direction of extension of the foolproof part 30. When assembling in other directions, it will be blocked by the foolproof part 30, which effectively prevents incorrect operation during the assembly process, such as reverse assembly or misalignment, thereby improving the accuracy of assembly. At the same time, due to the guiding effect of the foolproof part 30, the staff can identify the correct assembly direction more quickly, which facilitates the improvement of the assembly efficiency of the mating corner piece 14 and the connecting lock seat 22.

[0180] Furthermore, since the anti-mistake part 30 is located on the outside of the adjacent mating corner piece 14, there can be a certain distance between the anti-mistake part 30 and the mating corner piece 14, so that the anti-mistake part 30 is less likely to interfere with the assembly of the mating corner piece 14 and the connecting lock seat 22, making the assembly process of the mating corner piece 14 and the connecting lock seat 22 smoother.

[0181] Referring to Figures 4-6, in some embodiments, the anti-mistake part 30 is formed as a cylinder extending along the first direction. The cylindrical structure of the anti-mistake part 30 is relatively regular, so that the processing of the anti-mistake part 30 is relatively simple and easy to control. Whether by casting, forging, machining or injection molding, the cylindrical anti-mistake part 30 can be produced efficiently, which helps to improve the production efficiency of the connecting lock seat 22 and reduce production costs.

[0182] Referring to Figures 4-7, in some embodiments, the connecting lock seat 22 includes a guide surface 226, which is formed on the positioning protrusion 222 and is connected to the clamping part 224 and the mounting part 220 respectively. The guide surface 226 is formed as an inclined surface and cooperates with the opening 144a.

[0183] As can be seen, the inclined guide surface 226 can play a guiding role, guiding the positioning protrusion 222 through the opening 144a and into the positioning cavity 142, so that the assembly process of the positioning protrusion 222 and the positioning cavity 142 is smoother and the assembly efficiency is improved. At the same time, the inclined guide surface 226 can reduce the impact and friction during the assembly of the positioning protrusion 222 and the positioning cavity 142, thereby reducing the wear between parts, helping to extend the service life of the connecting lock seat 22 and the mating corner piece 14, and reducing maintenance costs.

[0184] Furthermore, in the actual manufacturing process, due to the influence of various factors, the size and shape of the positioning protrusion 222 may have certain errors. By designing the guide surface 226 as a slope, these minor errors can be compensated to a certain extent, so that even if the size of the positioning protrusion 222 is slightly off, it can still be assembled smoothly, which improves the flexibility and adaptability of assembling the connecting lock seat 22 and the mating corner piece 14.

[0185] Furthermore, the guide surface 226 and the mis-proof part 30 are arranged opposite each other in the second direction or the third direction, so that when the guide surface 226 is used for assembly guidance, it can be ensured that the mating corner piece 14 is located above the clamping part 224 and on the side of the mis-proof part 30 facing the positioning protrusion 222. Under the premise of realizing assembly mis-proof, it can also prevent the mating corner piece 14 from being misaligned, causing the mis-proof part 30 to be inserted into the mating corner piece 14.

[0186] Referring to Figures 8-15, in some embodiments, the energy storage device 1 further includes a connecting member 40. The connecting member 40 is located on the outside of two adjacent mating corner pieces 14. Thus, the connecting member 40 is located on the outside of the mating corner pieces 14 and the connecting lock seat 22. As an additional layer of protection, the connecting member 40 can reduce the risk of the mating corner pieces 14 and the connecting lock seat 22 being directly exposed to the external environment, such as avoiding sun exposure, rain, impact, etc., thereby extending the service life of the mating corner pieces 14 and the connecting lock seat 22.

[0187] The fixed connector 24 passes through the connecting member 40, the mating corner piece 14 and the connecting lock seat 22 for fixed connection, so as to lock the connected compartment 10. That is, the fixed connector 24 fixes the connecting member 40, the mating corner piece 14 and the connecting lock seat 22, forming a more stable overall structure, effectively dispersing the force at the connection, making the mating corner piece 14 and the connecting lock seat 22 more stable when subjected to external force, and less prone to deformation or damage.

[0188] Referring to Figures 8-15, in some embodiments, the coupling 40 includes a first part 42 and a second part 44 that are intersecting. The first part 42 and the second part 44 are respectively fixedly engaged with the adjacent sidewalls of the mating corner piece 14 through a fixed connector 24 (that is, the first part 42 and the second part 44 are respectively connected to the surrounding plate 146 in the second direction and the surrounding plate 146 in the third direction of the mating corner piece 14 through the fixed connector 24).

[0189] As can be seen, the first part 42 and the second part 44, which are intersecting, are fixedly engaged with the side wall of the mating corner piece 14, forming a stable structure similar to a triangle. This helps to improve the ability of the connecting part 40 to resist deformation or damage under external force. At the same time, it increases the connection points between the connecting part 40 and the mating corner piece 14, which can improve the connection strength between the connecting part 40 and the mating corner piece 14, so that the fixed engagement between the connecting part 40, the mating corner piece 14 and the connecting lock seat 22 is more stable, which facilitates the improvement of the stability of the adjacent compartments 10 after assembly.

[0190] Referring to Figures 8-11 and 14, in some embodiments, the connector 40 is provided with a limiting member 46 extending into the mating corner member 14. The limiting member 46 can be located on the first part 42 and / or the second part 44, thereby forming a physical constraint that effectively restricts the relative movement between the mating corner member 14 and the connector 40. This ensures that the connector 40, the mating corner member 14, and the connecting lock seat 22 can maintain a relatively stable positional relationship when subjected to force, avoiding loosening or failure of the connection due to movement. This improves the stability of the fixed connection between the connector 40, the mating corner member 14, and the connecting lock seat 22, thereby improving the stability when multiple compartments 10 are stacked.

[0191] It is understandable that by providing a limiting member 46 on the first part 42 and / or the second part 44, the relative movement between the mating corner member 14 and the connecting member 40 can be suppressed, thereby reducing the probability of loosening of the fixed connecting member 24 and improving the fixing effect.

[0192] Referring to Figures 8-11 and 14, in some embodiments, the mating corner piece 14 is provided with a first fixing hole 148 that mates with the fixed connector 24. The limiting member 46 passes through the first fixing hole 148 and extends into the mating corner piece 14 (i.e., the limiting member 46 passes through the first fixing hole 148 and extends into the positioning cavity 142), which simplifies the positioning process of the connector 40 and the mating corner piece 14. That is, when the limiting member 46 extends into the first fixing hole 148, the connector 40 and the mating corner piece 14 are in the correct installation position. Without the need for complex adjustments and calibrations, the fixed connector 24 can be quickly and accurately installed in the correct installation position, which facilitates the installation of the fixed connector 24 and improves the installation efficiency. At the same time, the limiting member 46 can restrict the movement of the fixed connector 24 in the first fixing hole 148, reducing the possibility of the connector 40 loosening or displacement due to external forces, thereby improving the stability of the fixed connection between the connector 40, the mating corner piece 14 and the connecting lock seat 22.

[0193] Referring to Figures 8-11 and 14, in some embodiments, the coupling 40 is provided with a second fixing hole 48 that mates with the fixing connector 24, and at least a portion of the limiting member 46 is disposed around the second fixing hole 48.

[0194] As can be seen, by assembling the limiting member 46 with the mating corner member 14, the positioning of the connecting member 40 and the mating corner member 14 becomes more intuitive and simple. The staff does not need to rely on complicated measuring or adjustment tools. They only need to ensure that the limiting member 46 is correctly aligned and extends into the mating corner member 14 to ensure that the connecting member 40 and the mating corner member 14 are in the correct installation position, which facilitates the subsequent installation of the fixed connecting member 24 through the second fixing hole 48.

[0195] In addition, the limiting member 46 is provided at least partially around the second fixing hole 48. The limiting member 46 can restrict the movement of the fixed connecting member 24 in the second fixing hole 48, reducing the possibility of the connecting member 40 loosening or displacement due to external force, thereby improving the stability of the fixed connection of the connecting member 40, the mating corner member 14 and the connecting lock seat 22.

[0196] It is understandable that the limiting member 46 can also be set all around the second fixing hole 48 in order to better restrict the movement of the fixing member 24 in the second fixing hole 48, and to improve the stability of multiple compartments 10 after stacking.

[0197] Referring to Figures 3, 4, 8, and 14, in some embodiments, the mating corner piece 14 is provided with a first fixing hole 148 that mates with the fixing connector 24, and the connecting piece 40 is provided with a second fixing hole 48 that mates with the fixing connector 24. The first fixing hole 148 and the second fixing hole 48 are arranged opposite to each other. The limiting member 46 extends into the mating corner piece 14 through the first fixing hole 148. After the limiting member 46 is extended into the first fixing hole 148, the connecting piece 40 and the mating corner piece 14 are in the correct installation position. At this time, the first fixing hole 148 and the second fixing hole 48 are in a position that is arranged opposite to each other, which simplifies the positioning process of the connecting piece 40 and the mating corner piece 14 and facilitates the subsequent fixing of the connecting piece 40 and the mating corner piece 14 by the fixing connector 24, thereby improving the assembly efficiency of the connecting piece 40 and the mating corner piece 14.

[0198] This application also provides a connector for connecting adjacent compartments 10 in a first direction. Specifically, the connector in this embodiment is configured as a second connector for the energy storage device 1. The connector includes a clamping part 224 and a mounting part 220 connected to the clamping part 224. The mounting part 220 is located on both sides of the clamping part 224 in the first direction and is used to connect to a first connector on the compartment 10.

[0199] According to the connector of the present application embodiment, by providing two mounting portions 220 on both sides of the clamping portion 224 in the first direction, the connection and fixation of two adjacent compartments 10 can be realized. By cooperating with the first connector and the third connector, the stability and reliability of the adjacent compartments 10 stacked in the first direction can be improved, thereby improving the reliability and stability of the energy storage device 1.

[0200] As shown in FIG7, according to some embodiments of the present application, the mounting part 220 is configured as a positioning protrusion 222. The mounting part 220 and the clamping part 224 are connected by a transition part 227. The cross-sectional area of ​​the transition part 227 gradually decreases in the direction away from the clamping part 224 to define the guide surface 226.

[0201] In this way, by setting the transition part 227, on the one hand, the connection reliability between the mounting part 220 and the clamping part 224 can be improved, and the overall structural strength of the connector can be improved. On the other hand, the assembly guidance between the first connector and the second connector can be realized, reducing the alignment difficulty and thus reducing the assembly difficulty.

[0202] According to some embodiments of this application, the mounting portion 220 is provided with a protrusion 222a at one end away from the clamping portion 224, and the cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the clamping portion 224.

[0203] Therefore, by setting the protrusion 222a, assembly guidance can also be achieved, and the contact area between the first connector and the second connector can be increased to improve the limiting effect in the second direction and the third direction.

[0204] Furthermore, the clamping part 224 is provided with a foolproof part 30, which extends along the first direction and is located outside the first connector.

[0205] In this way, on the one hand, by setting the anti-misfit part 30, the connection part and the first connection part can be limited to be assembled in the first direction, so as to achieve the technical effect of anti-misfit assembly. On the other hand, the structural strength of the connection part can be further improved, and the first connection part can be clamped with the mounting part 220 on the inner and outer sides (such as the second direction sides or the third direction sides), so as to further improve the limiting effect in the second direction or the third direction upward.

[0206] Thirdly, as shown in FIG17, an embodiment of this application provides an energy storage system 2, including an energy storage device 1 as described in the first aspect, wherein a battery device 50 is disposed within a housing cavity 11. The energy storage device 1 can be an energy storage container or an energy storage cabinet.

[0207] In the above technical solution, the energy storage device 1 has good stability, so that the energy storage device 1 can provide more stable power to the energy storage system 2, which is conducive to improving the stability of the energy storage system 2.

[0208] The following describes a specific embodiment of the energy storage device 1 of this application. Please refer to Figures 2-16. The energy storage device 1 includes: a plurality of chambers 10, a connecting assembly 20, and a connecting member 40.

[0209] Multiple compartments 10 are stacked along a first direction. Each compartment 10 includes a housing 12 and a mating corner piece 14. The housing 12 has a receiving cavity 11 for accommodating the battery device 50. The mating corner piece 14 is located on the outer peripheral wall of the housing 12 and has a connecting portion 140.

[0210] The connecting assembly 20 includes a connecting lock seat 22 and a fixed connector 24. Both ends of the connecting lock seat 22 are provided with mounting portions 220. The mounting portions 220 at both ends of the connecting lock seat 22 are respectively inserted into the connecting portions 140 of the adjacent mating corner pieces 14. Each mating corner piece 14 and the corresponding connecting lock seat 22 are fixedly connected by the fixed connector 24.

[0211] The connecting part 140 is a positioning cavity 142, and the mounting part 220 is a positioning protrusion 222. The inner wall of the positioning cavity 142 is provided with an insertion hole 142a. The end of the positioning protrusion 222 is provided with a protrusion 222a protruding from it. The protrusion 222a is located in the insertion hole 142a. The cross-sectional area of ​​the protrusion 222a gradually decreases in the direction away from the positioning protrusion 222. The fixing connector 24 fixes the corresponding mating corner piece 14 and the mounting part 220. The connecting lock seat 22 also includes a clamping part 224 located between the mounting parts 220 at both ends. The clamping part 224 clamps between adjacent mating corner pieces 14. The foolproof part 30 is provided in the clamping part 224 and located on the outside of the adjacent mating corner piece 14. The foolproof part 30 extends along a first direction.

[0212] The connecting member 40 is located on the outside of two adjacent mating corner members 14. The connecting member 40 includes a first part 42 and a second part 44 that intersect. The first part 42 and the second part 44 are respectively fixedly engaged with the adjacent sidewalls of the mating corner members 14 through the fixed connecting member 24. The mating corner member 14 is provided with a first fixing hole 148 that engages with the fixed connecting member 24. The connecting member 40 is provided with a second fixing hole 48 that engages with the fixed connecting member 24. The limiting member 46 extends into the mating corner member 14 through the first fixing hole 148. At least a portion of the limiting member 46 is arranged around the second fixing hole 48.

[0213] Taking the vertical direction as an example, the operator can first align and insert the mating corner piece 14 of the lower compartment 10 with the connecting lock seat 22, then align and insert the mating corner piece 14 of the upper compartment 10 with the connecting lock seat 22, then insert the limiting piece 46 into the mating corner piece 14 through the first fixing hole 148, and finally fix the mating corner piece 14, the connecting lock seat 22, and the connecting piece 40 into a whole through the fixing connector 24. Thus, through the combined action of the connecting component 20, the mating corner piece 14, and the connecting piece 40, the assembly process of adjacent compartments 10 is simplified, and multiple compartments 10 stacked together have good stability.

[0214] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0215] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage device, wherein, The application relates to a battery pack, comprising: a plurality of battery bodies stacked along a first direction, the battery bodies containing battery devices and / or control modules of the energy storage devices; a first connecting member arranged on the battery body; a second connecting member arranged to connect the first connecting members of the battery bodies adjacent along the first direction, so as to limit the connected battery bodies in a second direction and a third direction, the second direction and the third direction forming a plane perpendicular to the first direction; and a third connecting member arranged to connect the first connecting member and the second connecting member, so as to limit the connected battery bodies in the first direction.

2. The energy storage device of claim 1, wherein, The first connecting member and the second connecting member are in abutting connection in the second direction and / or the third direction.

3. The energy storage device of claim 2, wherein, The second connecting member comprises a clamping portion and mounting portions arranged on both sides of the clamping portion, and the first connecting member comprises a connecting portion, the mounting portions and the connecting portion being in abutting connection in the second direction and / or the third direction.

4. The energy storage device of claim 3, wherein, At least part of the mounting portions is inserted into the connecting portion, and / or at least part of the connecting portion is inserted into the mounting portions, so as to connect the adjacent battery bodies.

5. The energy storage device of claim 4, wherein, The mounting portions are configured as positioning protrusions, and the connecting portion is configured as a positioning cavity, the positioning protrusions being inserted into the positioning cavity.

6. The energy storage device of claim 5, wherein, The mounting portions and the clamping portion are connected through a transition portion, the transition portion gradually reducing in cross-sectional area in a direction away from the clamping portion, so as to define a guide surface.

7. The energy storage device of claim 6, wherein, The guide surface is arranged on at least one side of the mounting portions in the second direction and / or on at least one side of the mounting portions in the third direction.

8. The energy storage device of claim 6 or 7, wherein, An end of the mounting portions away from the clamping portion is further provided with a protruding portion, the protruding portion gradually reducing in cross-sectional area in a direction away from the clamping portion and being adapted to be first inserted into the positioning cavity.

9. The energy storage device of claim 8, wherein, The connecting portion comprises two end plates opposite in the first direction, one of the end plates being provided with an opening hole, the smallest projection profile size of the opening hole in the first direction being greater than the maximum projection profile size of the protruding portion, and the maximum projection profile size of the opening hole in the first direction being equal to the maximum projection profile size of the transition portion.

10. The energy storage device of claim 9, wherein, The other end plate is provided with an insertion hole, and at least part of the protruding portion is adapted to be inserted into the insertion hole.

11. The energy storage device of claim 9 or 10, wherein, A step portion is defined between the protruding portion and the mounting portions, and the connecting portion further comprises a surrounding plate surrounding the end plates, the surrounding plate being provided with a convex portion overlapping the step portion.

12. The energy storage device of claim 11, wherein, The surrounding plate is provided with a first fixing hole, the third connecting member penetrating through the first fixing hole and being connected with the second connecting member.

13. The energy storage device of any one of claims 1-12, wherein, The second connecting member is provided with a foolproof portion, the foolproof portion being arranged on one side of the second connecting member in the second direction and / or the third direction, and the projection profile of the foolproof portion in the first direction being located outside the projection profile of the first connecting member.

14. The energy storage device of any one of claims 1-13, wherein, The third connecting member is detachably connected with the first connecting member and the second connecting member.

15. The energy storage device of any one of claims 1-14, wherein, The energy storage device further comprises a fourth connecting member connected with the cartridge bodies adjacent in the first direction to limit and connect the connected cartridge bodies in the first direction, the second direction and the third direction.

16. The energy storage device of claim 15, wherein, The fourth connecting member is connected with at least one of the first connecting member, the second connecting member and the third connecting member.

17. The energy storage device of claim 15 or 16, wherein, The fourth connecting member comprises a first part extending along a plane defined by the first direction and the second direction, and a second part extending along a plane defined by the first direction and the third direction, and the first part and the second part are connected, and the first part and / or the second part are connected with the first connecting member, the second connecting member and the third connecting member.

18. The energy storage device of claim 17, wherein, The extension size of the first part in the second direction is greater than or equal to the length size of the first connecting member in the second direction, and the extension size of the second part in the third direction is greater than or equal to the length size of the first connecting member in the third direction.

19. The energy storage device of claim 17 or 18, wherein, The first part and / or the second part are provided with a second fixing hole, and the third connecting member passes through the second fixing hole to be connected with the first connecting member and the second connecting member.

20. The energy storage device of claim 19, wherein, The side of the first part facing the first connecting member and / or the side of the second part facing the first connecting member are provided with a limiting member, the limiting member is arranged adjacent to the second fixing hole and surrounds at least part of the outer contour of the third connecting member.

21. The energy storage device of any one of claims 1-20, wherein, At least part of the third connecting member extends in the second direction and is connected with the second connecting member, at least part of the third connecting member extends in the third direction and is connected with the second connecting member, and the third connecting member extending in the second direction and the third connecting member extending in the third direction are arranged staggered in the first direction.

22. The energy storage device of any one of claims 5-21, wherein, The first connecting member is configured as a fitting corner piece, the second connecting member is configured as a connecting lock seat, and the third connecting member is configured as a fixed connecting member, the fitting corner piece is arranged on the peripheral wall of the cartridge body, the fitting corner piece is provided with a connecting part, both ends of the connecting lock seat are provided with a mounting part, and the mounting parts at both ends of the connecting lock seat are respectively inserted and matched with the connecting parts of the adjacent fitting corner pieces to limit and connect the connected cartridge bodies in the second direction and the third direction, and each fitting corner piece and the corresponding connecting lock seat are fixedly connected by the fixed connecting member to limit and connect the connected cartridge bodies in the first direction.

23. The energy storage device of claim 22, wherein, The connecting part is a positioning cavity, and the mounting part is a positioning protrusion, and the positioning protrusion is located in the positioning cavity.

24. The energy storage device of claim 23, wherein, The fitting corner piece comprises an end plate and a surrounding plate, and the surrounding plate is provided with the end plate at both ends in the first direction, and the end plate and the surrounding plate surround the positioning cavity.

25. The energy storage device of claim 24, wherein, A first fixing hole is arranged on one of the two surrounding plates opposite in the second direction and one of the two surrounding plates opposite in the third direction, the fixed connecting member passes through the first fixing hole and is connected with the positioning protrusion.

26. The energy storage device of claim 24 or 25, wherein, Among the two end plates opposite in the first direction, one of the end plates is provided with an opening, and the positioning protrusion extends into the positioning cavity through the opening.

27. The energy storage device of claim 26, wherein, The other end plate is provided with an insertion hole, and the end of the positioning protrusion extends into the insertion hole.

28. The energy storage device of claim 27, wherein, The end of the positioning protrusion is provided with a protruding part protruding therefrom, and the protruding part is located in the insertion hole.

29. The energy storage device of claim 28, wherein, The cross-sectional area of the protruding part gradually decreases in a direction away from the positioning protrusion.

30. The energy storage device of any one of claims 23-29, wherein, The connecting lock seat further comprises a clamping part, two mounting parts are provided on both sides of the clamping part in the first direction, and the clamping part is clamped between adjacent cooperating corner pieces.

31. The energy storage device of claim 30, wherein, The energy storage device further comprises a foolproof part extending along the first direction, the foolproof part is provided on the clamping part and located outside the adjacent cooperating corner pieces.

32. The energy storage device of claim 31, wherein, The foolproof part is formed as a cylinder extending along the first direction.

33. The energy storage device of claim 31 or 32, wherein, The connecting lock seat comprises a guide surface formed on the positioning protrusion and connected with the clamping part, and the guide surface is formed as an inclined surface and cooperates with the cooperating corner piece.

34. The energy storage device of claim 33, wherein, The guide surface and the foolproof part are oppositely arranged in the second direction or the third direction.

35. The energy storage device of any one of claims 22-34, wherein, The fourth connecting piece of the energy storage device is configured as a combination piece, the combination piece is provided outside the two adjacent cooperating corner pieces, and the fixed connecting piece is fixedly connected with the combination piece, the cooperating corner piece and the connecting lock seat to lock the connected bin body.

36. The energy storage device of claim 35, wherein, The combination piece comprises a first part and a second part intersecting with each other, and the first part and the second part are connected with the surrounding plates of the cooperating corner piece in the second direction and the third direction through the fixed connecting piece respectively.

37. The energy storage device of claim 36, wherein, The combination piece is provided with a limiting piece extending into the cooperating corner piece, and the limiting piece is located in the first part and / or the second part.

38. The energy storage device of claim 37, wherein, The limiting piece extends into the positioning cavity of the cooperating corner piece.

39. The energy storage device of claim 37 or 38, wherein, The combination piece is provided with a second fixed hole matched with the fixed connecting piece, and at least part of the limiting piece is arranged around the second fixed hole.

40. A connector for connecting cartridge bodies adjacent in a first direction, wherein, It comprises: A clamping part and a mounting part connected with the clamping part, the mounting part is located on both sides of the clamping part in the first direction, and the mounting part is used for connecting with the first connecting piece on the bin body to limit the connected bin body in the second direction and the third direction.

41. The connection of claim 40, wherein, The mounting part is configured as a positioning protrusion, the mounting part is connected with the clamping part through a transition part, and the cross-sectional area of the transition part gradually decreases in a direction away from the clamping part to define a guide surface.

42. The connection of claim 40 or 41, wherein, The end of the mounting part away from the clamping part is provided with a protruding part, and the cross-sectional area of the protruding part gradually decreases in a direction away from the clamping part.

43. The connection of any of claims 40-42, wherein, The clamping part is provided with a foolproof part extending along the first direction and located outside the first connecting piece.

44. An energy storage system, wherein, It comprises the energy storage device according to any one of claims 1-39. It comprises the energy storage device according to any one of claims 1-39.

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