Battery pack, energy storage cabinet and energy storage system

Abstract

The utility model discloses a battery pack, an energy storage cabinet and an energy storage system, and belongs to the technical field of energy storage. The battery pack comprises at least two battery modules and at least one first locking piece, the battery modules are sequentially stacked in the vertical direction, a first connecting structure is arranged on the bottom face of each battery module, and a second connecting structure matched with the first connecting structure in a guiding mode is arranged on the top face of each battery module. The two adjacent battery modules are movably connected along the horizontal direction; and the first locking piece is detachably connected with the at least two battery modules respectively. The first connecting structure and the second connecting structure which are in guide fit are respectively arranged on the bottom surface and the top surface of the battery module, so that two adjacent battery modules are movably connected along the horizontal direction, and then the battery modules are limited through the first locking piece, so that the battery modules are conveniently stacked, a battery rack is not needed, and the cost is reduced. The space in the energy storage cabinet is fully utilized, so that the energy density of the energy storage system is effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular relates to a battery pack, an energy storage cabinet and an energy storage system. Background Art

[0002] With the rapid development of the energy storage market, the requirements for the energy density of energy storage systems (i.e., total system capacity ÷ system volume) are becoming increasingly higher. Considering that the energy storage cabinet is the basic unit of the energy storage system, the energy storage cabinet is used to accommodate battery modules, and the number of battery modules is often increased as much as possible to improve the energy density. However, at present, the battery modules are often stored by installing battery racks in the energy storage cabinet, which not only reduces the space utilization in the energy storage cabinet and thus limits the number of battery modules, making it difficult to efficiently improve the energy density of the energy storage system, but also requires the battery modules to be placed in the energy storage cabinet one by one during assembly, which makes the assembly troublesome and cumbersome, time-consuming and labor-intensive. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery pack, an energy storage cabinet and an energy storage system, which respectively sets a first connection structure and a second connection structure with sliding fit on the bottom and top surfaces of the battery module to realize the movable connection of two adjacent battery modules in the horizontal direction, and then limits the battery module by a first locking member, which is not only convenient for stacking battery modules and installation, but also does not require the use of battery racks, reduces production costs, and makes full use of the space in the energy storage cabinet, thereby effectively realizing the improvement of the energy density of the energy storage system.

[0004] In a first aspect, the present application provides a battery pack, comprising:

[0005] At least two battery modules stacked in sequence in a vertical direction, wherein the bottom surface of the battery module is provided with a first connection structure, and the top surface of the battery module is provided with a second connection structure guided and matched with the first connection structure, so that two adjacent battery modules can be movably connected in a horizontal direction;

[0006] At least one first locking member is detachably connected to at least two of the battery modules, and is used to limit relative movement between adjacent battery modules.

[0007] According to the battery pack of the present application, since the bottom surface of each battery module is provided with a first connection structure, and the top surface of each battery module is provided with a first connection structure, the first connection structure and the second connection structure are guided and matched in the horizontal direction, which not only facilitates the stacking of battery modules and facilitates installation, but also eliminates the need to use battery racks, reduces production costs, and fully utilizes the space in the energy storage cabinet, thereby effectively improving the energy density of the energy storage system. The battery modules in the battery pack are limited by the first locking member, thereby ensuring the structural stability of the entire battery pack and facilitating the transportation of the entire battery pack.

[0008] According to one embodiment of the present application, one of the first connecting structure and the second connecting structure includes at least one guide groove, which extends along the horizontal direction, and the other of the first connecting structure and the second connecting structure includes at least one guide block, which is slidably matched with the guide block.

[0009] According to one embodiment of the present application, the first connecting structure includes at least one roller, the second connecting structure includes at least one guide rail, the guide rail extends along the horizontal direction, and the roller and the guide rail are in rolling cooperation.

[0010] In a second aspect, the present application provides an energy storage cabinet, which includes:

[0011] Cabinet;

[0012] At least one battery pack as described above is installed in the cabinet.

[0013] According to the energy storage cabinet of the present application, a first connecting structure and a second connecting structure for guiding cooperation are respectively provided on the bottom surface and the top surface of each battery module of the battery pack to realize the movable connection of two adjacent battery modules in the horizontal direction, and then the battery module is limited by the first locking member. This not only facilitates the stacking of battery modules and the installation, but also eliminates the need for battery racks, thereby reducing production costs, making full use of the space in the energy storage cabinet, and effectively realizing the improvement of the energy density of the energy storage system.

[0014] According to an embodiment of the present application, at least one third connection structure is provided on the inner bottom surface of the cabinet, the third connection structure corresponds to the battery pack one by one, and the third connection structure is guided and matched with the first connection structure.

[0015] According to an embodiment of the present application, a first positioning structure is provided on a side wall of the battery pack, and a second positioning structure is provided on an inner wall of the cabinet, and the first positioning structure and the second positioning structure are positioned and matched.

[0016] According to an embodiment of the present application, one of the first positioning structure and the second positioning structure includes a positioning piece, and the other of the first positioning structure and the second positioning structure includes a positioning hole, and the positioning piece and the positioning hole are plugged into each other.

[0017] According to one embodiment of the present application, it also includes:

[0018] At least one second locking member is detachably connected to the inner top surface of the cabinet and the battery pack respectively; and / or

[0019] At least one third locking member is detachably connected to the inner bottom surface of the cabinet and the battery pack, respectively.

[0020] According to one embodiment of the present application, it also includes:

[0021] at least one first connector, detachably connected to at least two of the battery packs; and / or

[0022] At least two second connecting members are detachably connected to the battery pack and the inner wall of the cabinet, respectively.

[0023] In a third aspect, the present application provides an energy storage system, the energy storage system comprising:

[0024] Power generation devices, and

[0025] The energy storage cabinet as described above is electrically connected to the power generation device.

[0026] According to the energy storage cabinet of the present application, a first connecting structure and a second connecting structure with guiding cooperation are respectively provided on the bottom surface and the top surface of each battery module of the battery pack in the energy storage cabinet to realize the movable connection of two adjacent battery modules in the horizontal direction, and then the battery module is limited by the first locking member, which not only facilitates the stacking of battery modules and facilitates installation, but also eliminates the need for battery racks, reduces production costs, and makes full use of the space in the energy storage cabinet, thereby effectively realizing the improvement of the energy density of the energy storage system.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is one of the structural schematic diagrams of the first battery module provided in the embodiment of the present application;

[0030] Figure 2This is the second structural schematic diagram of the first battery module provided in the embodiment of the present application;

[0031] Figure 3 is a schematic structural diagram of a second battery module provided in an embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application;

[0033] Figure 5 It is a structural schematic diagram of a cabinet provided in an embodiment of the present application;

[0034] Figure 6 It is a schematic diagram of the structure of the energy storage cabinet provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 110, battery module; 111, positioning hole; 120, first locking member;

[0037] 200, cabinet body; 201, positioning member; 210, inner bottom surface; 220, inner top surface;

[0038] 301, guide groove; 310, guide block; 320, guide rail; 330, roller;

[0039] 400, third locking member; 500, first connecting member; 600, third connecting structure. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] Reference below Figure 1-Figure 4 A battery pack provided in an embodiment of the present application is described, and the battery pack includes at least two battery modules 110 stacked in sequence in a vertical direction and at least one first locking member 120 .

[0042] It should be noted that the number and size of the battery modules 110 can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0043] The bottom surface of the battery module 110 is provided with a first connection structure, and the top surface of the battery module 110 is provided with a second connection structure that is guided and matched with the first connection structure, so that two adjacent battery modules 110 can be movably connected in the horizontal direction.

[0044] It can be understood that since the bottom surface of each battery module 110 is provided with a first connection structure, and the top surface of each battery module 110 is provided with a first connection structure, the first connection structure and the second connection structure can be flexibly coordinated in the horizontal direction, which not only facilitates the stacking of the battery modules 110 and facilitates installation, but also eliminates the need to use battery racks, thereby reducing production costs, making full use of the space in the energy storage cabinet, and effectively realizing the improvement of the energy density of the energy storage system.

[0045] The first locking member 120 is detachably connected to at least two battery modules 110, respectively, to limit the relative movement between adjacent battery modules 110. The material of the first locking member 120 includes, but is not limited to, stainless steel, aluminum alloy or titanium alloy. The connection method between the first locking member 120 and the battery module 110 includes, but is not limited to, thread, rivet connection or snap connection. It should be noted that when there are multiple battery modules 110, the locking member can be connected to two battery modules 110 at the same time, or to multiple battery modules 110. As long as it can be ensured that each battery module 110 in the battery pack is relatively fixed, this embodiment does not impose specific restrictions on the shape and number of the first locking member 120.

[0046] It can be understood that since adjacent battery modules 110 can move relatively through the guiding cooperation of the first connecting structure and the second connecting structure, in order to prevent the battery module 110 from moving during transportation or use, the battery module 110 in the battery pack is limited by the first locking member 120, thereby ensuring the structural stability of the entire battery pack and facilitating the transportation of the entire battery pack.

[0047] According to the battery pack provided in the embodiment of the present application, a first connecting structure and a second connecting structure with guiding cooperation are respectively provided on the bottom surface and the top surface of the battery module 110 to realize the movable connection of two adjacent battery modules 110 in the horizontal direction, and then the battery module 110 is limited by the first locking member 120. This not only facilitates the stacking of the battery modules 110 and facilitates installation, but also eliminates the need for battery racks, thereby reducing production costs, making full use of the space in the energy storage cabinet, and effectively realizing the improvement of the energy density of the energy storage system.

[0048] In some embodiments, Figures 1 to 4 As shown, in order to achieve the sliding fit of the first connection structure and the second connection structure, one of the first connection structure and the second connection structure includes at least one guide groove 301, and the guide groove 301 extends in the horizontal direction, and the other of the first connection structure and the second connection structure includes at least one guide block 310, and the guide block 310 and the guide groove 301 are slidably matched. It should be noted that the shapes of the guide block 310 and the guide groove 301 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0049] The horizontal direction includes a first horizontal direction and a second horizontal direction that are perpendicular to each other, and the length of the guide groove 301 extends along the first horizontal direction.

[0050] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the first connection structure includes a guide block 310, and the second connection structure includes a guide groove 301, that is, the guide groove 301 is set on the top surface of the battery module 110, and the guide block 310 is set on the bottom surface of the battery module 110. The guide block 310 slides along the first horizontal direction in the guide groove 301, thereby driving the corresponding battery module 110 to slide horizontally relative to the adjacent battery module 110. The connection method between the guide block 310 and the battery module 110 includes but is not limited to bolt connection, rivet connection, shaft connection or snap connection, etc. Of course, in other embodiments, it can also be as Figure 3 As shown, the first connection structure includes a guide groove 301, and the second connection structure includes a guide block 310, that is, the guide block 310 is arranged on the top surface of the battery module 110, and the guide groove 301 is arranged on the bottom surface of the battery module 110, and the guide block 310 slides along the first horizontal direction in the guide groove 301, thereby driving the corresponding battery module 110 to slide horizontally relative to the adjacent battery module 110. This embodiment does not impose specific restrictions on this.

[0051] In some embodiments, in order to make the force on the battery module 110 as uniform as possible and further improve the stability of the sliding of the battery module 110, two or more guide grooves 301 spaced apart along the second horizontal direction are provided on one battery module 110, and one guide groove 301 may correspond to at least one guide block 310. That is, one guide groove 301 may be slidably matched with only one guide block 310, or may be slidably matched with two or more guide blocks 310 spaced apart along the first horizontal direction, and this embodiment does not impose any specific restrictions on this.

[0052] In some embodiments, Figure 2 As shown, the first connection structure includes at least one roller 330, and the second connection structure includes at least one guide rail 320. The guide rail 320 extends in the horizontal direction, and the roller 330 and the guide rail 320 are in rolling cooperation. Through the rolling cooperation between the roller 330 and the guide rail 320, the sliding friction is converted into rolling friction, further reducing the possibility of damage to the surface of the battery module 110.

[0053] It should be noted that the guide rail 320 is provided with a guide groove 301 to guide the roller 330 to roll horizontally in the guide rail 320. The connection method between the guide rail 320 and the battery module 110 includes but is not limited to bolt connection, rivet connection or snap connection.

[0054] In some embodiments, in order to make the force on the battery module 110 as uniform as possible and further improve the stability of the sliding of the battery module 110, two or more guide rails 320 spaced apart along the second horizontal direction are provided on one battery module 110, and one guide rail 320 may correspond to at least one roller 330. That is, one guide rail 320 may be in rolling cooperation with only one roller 330, or may be in rolling cooperation with two or more rollers 330 spaced apart along the first horizontal direction, and this embodiment does not impose any specific restrictions on this.

[0055] An embodiment of the present application also provides an energy storage cabinet.

[0056] like Figure 5 and Figure 6 As shown, the energy storage cabinet includes a cabinet body 200 and at least one of the above-mentioned battery packs, and the battery pack is installed in the cabinet body 200.

[0057] It can be understood that when there are two or more battery packs, the two or more battery packs are placed sequentially along the second horizontal direction.

[0058] It should be noted that the material of the cabinet 200 includes but is not limited to stainless steel, aluminum alloy or titanium alloy, etc. The number of battery packs can be adjusted according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0059] According to the energy storage cabinet provided in the embodiment of the present application, a first connection structure and a second connection structure that are slidably matched are respectively provided on the bottom surface and the top surface of each battery module 110 of the battery pack to realize sliding connection of two adjacent battery modules 110 in the horizontal direction, and then the battery module 110 is limited by the first locking member 120, which not only facilitates the stacking of the battery modules 110 and facilitates installation, but also eliminates the need for a battery rack, thereby reducing production costs, making full use of the space in the energy storage cabinet, and effectively realizing an increase in the energy density of the energy storage system.

[0060] In some embodiments, in order to facilitate the extraction of the entire battery pack from the cabinet 200, at least one third connection structure 600 is provided on the inner bottom surface 210 of the cabinet 200. The third connection structure 600 provided on the inner bottom surface 210 of the cabinet 200 corresponds one-to-one to the battery pack, and the third connection structure 600 is guided and matched with the first connection structure.

[0061] It is understandable that, since the inner bottom surface 210 of the cabinet 200 is provided with the third connection structure 600, it is movably connected with the first connection structure on the bottom surface of the battery module 110 located at the bottom of the battery pack in the horizontal direction, which not only saves time and effort, but also plays a guiding and limiting role in the transportation of the battery pack. Figure 1 , Figure 2 and Figure 5As shown, when a roller 330 is provided on the bottom surface of the battery module 110, the third connection structure 600 includes a slide rail for rolling with the roller 330. The specification of the slide rail may be the same as that of the guide rail 320. This embodiment does not impose any specific restrictions on the specific shape of the third connection structure 600.

[0062] In some embodiments, a first positioning structure is disposed on the side wall of the battery pack, and a second positioning structure is disposed on the inner wall of the cabinet 200 , and the first positioning structure and the second positioning structure are positioned and matched.

[0063] It can be understood that by setting a first positioning structure on the side wall of at least one battery module 110 in the battery pack, and utilizing the first positioning structure and the second positioning structure on the side wall of the cabinet 200 to position and cooperate, it is possible to determine whether the battery pack is installed in place and further improve the stability of the connection between the battery pack and the cabinet 200.

[0064] In this embodiment, in order to ensure the stability of the connection between the battery pack and the cabinet 200 as much as possible, the side wall of each battery module 110 of the battery pack is provided with a first positioning structure.

[0065] In some embodiments, in combination Figure 2 Kazuto Figure 5 As shown, one of the first positioning structure and the second positioning structure includes a positioning member 201, and the other of the first positioning structure and the second positioning structure includes a positioning hole 111, and the positioning member 201 is plugged into the positioning hole 111. It should be noted that the number and shape of the positioning holes 111 and the positioning member 201 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0066] It can be understood that when the battery pack is placed in the cabinet 200, the battery pack is first placed in the cabinet 200 as a whole through the sliding fit of the first connection structure provided on the battery module 110 and the third connection structure 600 provided on the inner bottom surface 210 of the cabinet 200, and then the positioning member 201 and the positioning hole 111 are plugged in, thereby confirming that the battery module 110 is installed in place in the cabinet 200, and the plugging of the positioning member 201 and the positioning hole 111 plays a role in limiting the circumferential direction of the positioning hole 111, thereby increasing the constraints on the battery module 110.

[0067] In this embodiment, combined with Figure 2 and Figure 5 As shown, the positioning hole 111 is formed on the side wall of the battery module 110, and the positioning member 201 is protruded from the inner wall of the cabinet 200. In other embodiments, the positioning hole 111 may be formed on the inner wall of the cabinet 200, and the positioning member 201 may be protruded from the battery module 110.

[0068] In some embodiments, in order to adapt to different heights of the battery modules 110, the positioning hole 111 is a long hole and extends in the vertical direction; the positioning member 201 may also be height-adjustably arranged in the cabinet 200 to further improve the use range of the energy storage cabinet.

[0069] In some embodiments, Figure 6 As shown, the energy storage cabinet also includes at least one second locking member and at least one third locking member 400, the second locking member is detachably connected to the inner top surface 220 of the cabinet 200 and the battery pack respectively; and / or the third locking member 400 is detachably connected to the inner bottom surface 210 of the cabinet 200 and the battery pack respectively.

[0070] It is understandable that the battery module 110 at the top of each battery pack is connected to the inner top surface 220 of the cabinet 200 through at least one second locking member, and the battery module 110 at the bottom of each battery pack is connected to the inner bottom surface 210 of the cabinet 200 through at least one third locking member 400. The material of the second locking member or the third locking member 400 includes but is not limited to stainless steel, aluminum alloy or titanium alloy. The connection method between the second locking member and the battery module 110 includes but is not limited to thread, rivet connection or snap connection. The connection method between the third locking member 400 and the battery module 110 includes but is not limited to thread, rivet connection or snap connection. It should be noted that when the same battery module 110 is connected to two or more second locking members or third locking members 400 at the same time, two or more second locking members are arranged at intervals along the second horizontal direction, and two or more third locking members 400 are arranged at intervals along the second horizontal direction. As long as the battery pack and the cabinet 200 can be relatively fixed, this embodiment does not impose specific restrictions on the shape and quantity of the second locking members and the third locking members 400.

[0071] It should be noted that the shape and size of the second locking member and the third locking member 400 may be the same as or different from the first locking member 120 , and this embodiment does not impose any specific limitation on this.

[0072] In some embodiments, Figure 6 As shown, the energy storage cabinet also includes at least one first connector 500 and at least two second connectors, the first connectors 500 are detachably connected to at least two battery packs respectively; and / or the second connectors are detachably connected to the battery packs and the inner wall of the cabinet 200 respectively.

[0073] It is understandable that the first connector 500 is respectively connected to at least two battery modules 110 arranged along the second horizontal direction to ensure that the distance between two adjacent battery packs remains unchanged as much as possible, thereby improving the positioning strength of the battery pack. The second connector is respectively connected to the inner wall of the cabinet 200 and the battery modules 110 located at both ends along the second horizontal direction to ensure that the distance between the battery pack and the inner wall of the cabinet 200 remains unchanged, thereby providing the positioning strength of the battery pack.

[0074] It is understandable that the material of the first connector 500 or the second connector includes but is not limited to stainless steel, aluminum alloy or titanium alloy. The connection method between the first connector 500 and the battery module 110 includes but is not limited to thread, rivet connection or snap connection. The connection method between the second connector and the battery module 110 and the connection method between the second connector and the cabinet 200 include but are not limited to thread, rivet connection or snap connection. It should be noted that when the same battery pack is connected to two or more first connectors 500 or second connectors at the same time, two or more first connectors 500 are arranged at intervals in the vertical direction, and two or more second connectors are arranged at intervals in the vertical direction. As long as the battery pack and the cabinet 200 can be relatively fixed, the shape and number of the first connector 500 or the second connector are not specifically limited in this embodiment.

[0075] The embodiment of the present application also provides an energy storage system, which includes a power generation device and the above energy storage cabinet, wherein the power generation device and the energy storage cabinet are electrically connected.

[0076] The power generation device may include, but is not limited to, a photovoltaic power generation device, a hydropower generation device, a wind power generation device, or a tidal power generation device, etc., and this embodiment does not impose any specific restrictions on this.

[0077] According to the energy storage system provided in the embodiment of the present application, a first connection structure and a second connection structure that are slidably matched are respectively provided on the bottom surface and the top surface of each battery module 110 of the battery pack in the energy storage cabinet, so that two adjacent battery modules 110 can be slidably connected in the horizontal direction, and then the battery module 110 is limited by the first locking member 120, which not only facilitates the stacking of the battery modules 110 and facilitates installation, but also eliminates the need to use a battery rack, thereby reducing production costs, making full use of the space in the energy storage cabinet, and effectively improving the energy density of the energy storage system.

[0078] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0079] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0080] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0081] In the description of the present application, “plurality” means two or more.

[0082] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0083] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: At least two battery modules stacked in sequence in a vertical direction, wherein the bottom surface of the battery module is provided with a first connection structure, and the top surface of the battery module is provided with a second connection structure guided and matched with the first connection structure, so that two adjacent battery modules can be movably connected in a horizontal direction; At least one first locking member is detachably connected to at least two of the battery modules, and is used to limit relative movement between adjacent battery modules.

2. The battery pack according to claim 1, characterized in that: One of the first connection structure and the second connection structure includes at least one guide groove extending along the horizontal direction, and the other of the first connection structure and the second connection structure includes at least one guide block, and the guide block and the guide groove are slidably matched.

3. The battery pack according to claim 1, characterized in that: The first connection structure includes at least one roller, and the second connection structure includes at least one guide rail, the guide rail extends along the horizontal direction, and the roller and the guide rail are in rolling cooperation.

4. An energy storage cabinet, characterized in that: include: Cabinet; At least one battery pack according to any one of claims 1 to 3, wherein the battery pack is installed in the cabinet.

5. The energy storage cabinet according to claim 4, characterized in that: The inner bottom surface of the cabinet is provided with at least one third connection structure, the three connection structures correspond to the battery packs one by one, and the third connection structure is guided and matched with the first connection structure.

6. The energy storage cabinet according to claim 4 or 5, characterized in that: The side wall of the battery pack is provided with a first positioning structure, and the inner wall of the cabinet is provided with a second positioning structure, and the first positioning structure and the second positioning structure are positioned and matched.

7. The energy storage cabinet according to claim 6, characterized in that: One of the first positioning structure and the second positioning structure includes a positioning piece, and the other of the first positioning structure and the second positioning structure includes a positioning hole, and the positioning piece is plugged into the positioning hole.

8. The energy storage cabinet according to claim 4 or 5, characterized in that: Also includes: At least one second locking member is detachably connected to the inner top surface of the cabinet and the battery pack respectively; and / or At least one third locking member is detachably connected to the inner bottom surface of the cabinet and the battery pack, respectively.

9. The energy storage cabinet according to claim 4 or 5, characterized in that: Also includes: at least one first connector, detachably connected to at least two of the battery packs; and / or At least two second connecting members are detachably connected to the battery pack and the inner wall of the cabinet, respectively.

10. An energy storage system, characterized in that: include: Power generation devices, and The energy storage cabinet according to any one of claims 4 to 9, wherein the energy storage cabinet is electrically connected to the power generation device.

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