Energy storage system

Abstract

The utility model relates to the technical field of energy storage, in particular to an energy storage system which comprises a supporting frame, supporting limiting pieces, reinforcing connecting pieces and a battery pack, a main mounting cavity is formed in the supporting frame, multiple sets of supporting limiting pieces which are sequentially arranged in the first preset direction are arranged in the supporting frame, and the mounting cavity is divided into multiple sub mounting cavities; battery packs are placed in the sub-mounting cavities; in a first preset direction, the support limiting pieces are respectively used for supporting the bottom of the upper-layer battery pack in two adjacent layers of battery packs and limiting the top of the lower-layer battery pack; any branch mounting cavity is provided with a reinforcing connecting piece, and the reinforcing connecting piece is connected with the supporting frame; the supporting limiting piece is detachably connected with the reinforcing connecting piece and / or the supporting frame; and the battery pack is detachably connected with the reinforcing connecting piece. Therefore, the battery pack and the supporting and limiting structure can be mounted layer by layer from bottom to top, and a space does not need to be reserved for a fork frame of the forklift, namely, the effects of saving the space and increasing the energy density are achieved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage system. Background Technology

[0002] Currently, battery packs are installed on racks, allowing several battery packs to be arranged according to certain rules to form a battery rack, which is also an energy storage system. However, there are problems with battery racks: when installing battery packs on the rack, forklift forks or other tooling are often used to move the battery packs. This requires reserving space on the rack to avoid the forklift forks or other tooling. In addition, the main load-bearing structure of the rack is made of welded steel, resulting in a large amount of space occupied by the rack. This does not conform to the development trend of the new energy market for high space utilization of energy storage systems. Although the rack reserves space for forklift forks to move batteries, the operation process is still somewhat inconvenient. Utility Model Content

[0003] The purpose of this application is to provide an energy storage system that, to a certain extent, solves the technical problem of low space utilization of battery cluster racks in the prior art, which does not meet the development requirements of high space utilization in energy storage systems.

[0004] This application provides an energy storage system, including: a support frame, support limiting members, reinforcing connectors, and a battery pack; wherein, the support frame forms at least one main mounting cavity, and each of the main mounting cavities is provided with multiple sets of support limiting members arranged sequentially and spaced apart along a first preset direction to divide the mounting cavity into multiple sub-mounting cavities along the first preset direction, and at least one of the sub-mounting cavities contains the battery pack.

[0005] Along the first preset direction, the supporting limiting members are respectively used to support the bottom of the upper battery pack in two adjacent battery packs and limit the top of the lower battery pack; each of the sub-installation cavities is equipped with the reinforcing connector, and the reinforcing connector is connected to the supporting frame; the supporting limiting members are detachably connected to the reinforcing connector and / or the supporting frame; the battery pack is detachably connected to the reinforcing connector.

[0006] In the above technical solution, the supporting limiting member further includes a body, which is an L-shaped structure extending along a second preset direction, and along the first preset direction, the L-shaped structure is adapted to the side apex corner of the lower battery pack.

[0007] In any of the above technical solutions, the supporting limiting member further includes a limiting part, and along the pushing direction of the battery pack, the limiting part is disposed at the tail end of the body for limiting the battery pack.

[0008] In any of the above technical solutions, the supporting limiting member further includes a reinforcing rib plate, and the reinforcing rib plate is disposed in the opening of the L-shaped body, and the reinforcing rib is connected to the body.

[0009] In any of the above technical solutions, the supporting limiting member is further detachably connected to the reinforcing connecting member and / or the supporting frame via a first fastening member.

[0010] In any of the above technical solutions, the battery pack and the reinforcing connector are further detachably connected by a second fastening member.

[0011] In any of the above technical solutions, the battery pack has at least one side along the third preset direction with a plurality of connecting portions extending outward thereto, and the connecting portions on both sides of the battery pack are staggered; each of the connecting portions is detachably connected to the corresponding reinforcing connector; when there are multiple mounting cavities, the battery packs located on the same layer in two adjacent mounting cavities share a row of reinforcing connectors.

[0012] In any of the above technical solutions, the battery pack further includes a cover, a battery module, and a liquid cooling plate; wherein the battery module is disposed on the upper surface of the liquid cooling plate; the cover covers the liquid cooling plate and is connected to the liquid cooling plate; the side of the liquid cooling plate is detachably connected to the corresponding reinforcing connector.

[0013] In any of the above technical solutions, the battery module further includes a cell assembly, an end plate, an insulating plate, and a protective component; wherein the cell assembly includes a plurality of cells, and the plurality of cells are arranged sequentially, and foam is provided between any two adjacent cells; the end plate is provided at both ends of the cell assembly along the arrangement direction of the cells;

[0014] The insulating plate is disposed on the side of the battery cell where the explosion-proof valve is located, and the insulating plate has a through hole corresponding to the explosion-proof valve; the protective member is disposed on the side of the insulating plate away from the battery cell, and the protective member extends along the arrangement direction of the battery cell, and both ends of the protective member are respectively connected to the two end plates; the protective member forms a receiving cavity and an inlet and an outlet communicating with the receiving cavity, and there are multiple inlets, which correspond one-to-one with and communicate with multiple through holes.

[0015] In any of the above technical solutions, further, along the arrangement direction of the battery cells, at least one end of the protective member forms the outlet.

[0016] In any of the above technical solutions, the protective component and the two end plates are detachably connected by a third fastening component.

[0017] In any of the above technical solutions, the battery module further includes a strap for fixing the cell assembly to the end plate.

[0018] In any of the above technical solutions, the support frame further includes column assemblies and connecting beams; wherein, there are multiple sets of column assemblies, and the multiple sets of column assemblies are arranged sequentially at intervals along a fourth preset direction, and a general mounting cavity is formed between any two adjacent sets of column assemblies; the multiple column assemblies are connected by the connecting beams; each set of column assemblies includes multiple columns arranged sequentially at intervals along a second preset direction.

[0019] In any of the above technical solutions, further, along the first preset direction, the bottom surface of the bottommost reinforcing connector is flush with the bottom surface of the support frame and is used to support it on the target ground.

[0020] In any of the above technical solutions, each group of support limiting members further includes multiple support limiting members, and at least two of the support limiting members are sequentially spaced apart along a third preset direction; and / or

[0021] In any of the above technical solutions, further, the reinforcing connectors are provided on both sides of each of the sub-installation cavities along the third preset direction.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] The novel energy storage system provided in this application allows the battery pack and supporting limiting structure to be installed layer by layer from bottom to top, eliminating the need to reserve space for the forklift forks as in existing technologies. This significantly saves space in the vertical direction and increases the energy density of the energy storage system. Furthermore, the battery pack and reinforcing connector are detachably connected, and the supporting limiting component is detachably connected to the reinforcing connector and / or the supporting frame. This detachable connection structure facilitates future maintenance. Moreover, the energy storage system has a simple structure and is easy to operate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the energy storage system provided in the embodiments of this application;

[0026] Figure 2 for Figure 1 A magnified structural diagram at point A;

[0027] Figure 3 This is another structural schematic diagram of the energy storage system provided in the embodiments of this application;

[0028] Figure 4 for Figure 3 A magnified structural diagram at point B;

[0029] Figure 5 Another structural schematic diagram of the energy storage system provided in the embodiments of this application;

[0030] Figure 6 for Figure 5 A magnified structural diagram at point C;

[0031] Figure 7 Assembly drawings of the support frame, support limiting member, and reinforcing connector provided in the embodiments of this application;

[0032] Figure 8 for Figure 7 A magnified structural diagram at point D;

[0033] Figure 9 Another assembly drawing of the support frame, support limiting member, and reinforcing connector provided in the embodiments of this application;

[0034] Figure 10 Another assembly drawing of the support frame, support limiting member, and reinforcing connector provided in the embodiments of this application;

[0035] Figure 11 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0036] Figure 12 An exploded view of the battery pack provided in an embodiment of this application;

[0037] Figure 13 This is a schematic diagram of the structure of the liquid cooling plate provided in the embodiments of this application;

[0038] Figure 14 This is a schematic diagram of the battery module provided in an embodiment of this application;

[0039] Figure 15 This is a partial structural diagram of the battery module provided in an embodiment of this application;

[0040] Figure 16 This is a schematic diagram of the structure of the protective component provided in the embodiments of this application.

[0041] Figure label:

[0042] 1-Support frame, 11-Column assembly, 111-Column, 12-Connecting beam, 2-Support limiting component, 21-Body, 211-Horizontal plate, 212-Vertical plate, 22-Limiting part, 3-Reinforcing connector, 4-Battery pack, 41-Case cover, 42-Battery module, 421-Cell assembly, 422-End plate, 423-Insulating plate, 4231-Through hole, 424-Protective component, 4241-Inlet, 4242-Outlet, 425-Binding strap, 43-Liquid cooling plate, 431-Connecting part. Detailed Implementation

[0043] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0044] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0045] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] The following reference Figures 1 to 16This application describes an energy storage system according to some embodiments.

[0049] See Figures 1 to 10 As shown, an embodiment of this application provides an energy storage system, including: a support frame 1, a support limiting member 2, a reinforcing connector 3, and a battery pack 4; wherein, the support frame 1 forms at least one main mounting cavity, and each main mounting cavity is provided with multiple sets of support limiting members 2 arranged sequentially and spaced apart along a first preset direction a, so as to divide the mounting cavity into multiple sub-mounting cavities along the first preset direction a, and at least one sub-mounting cavity is filled with a battery pack 4;

[0050] Along the first preset direction a, the support limiting member 2 is used to support the bottom of the upper battery pack 4 in two adjacent battery packs 4, and to limit the top of the lower battery pack 4; each sub-installation cavity is equipped with a reinforcing connector 3, and the reinforcing connector 3 is connected to the support frame 1; the support limiting member 2 is detachably connected to the reinforcing connector 3 and / or the support frame 1; the battery pack 4 is detachably connected to the reinforcing connector 3.

[0051] As can be seen from the structure described above, this application provides a novel energy storage system, such as a novel battery cluster rack. During the assembly process, the installation can start from the bottom layer. After the bottom layer battery pack 4 is placed on the support frame 1 and the bottom layer reinforcing connector 3 is connected using a forklift, the forklift forks are removed from the installation cavity. Then, the support limiting member 2 is installed at the top position of this layer of battery pack 4. The support limiting member 2 and the battery pack 4 are installed in this order until the assembly of the multi-layer battery pack 4 is completed.

[0052] As can be seen, the novel energy storage system provided in this application allows the battery pack 4 and the supporting limiting structure to be installed layer by layer from bottom to top, eliminating the need to reserve space for the forklift forks as in the prior art. This greatly saves space in the height direction and improves the energy density of the energy storage system. In addition, the battery pack 4 is detachably connected to the reinforcing connector 3, and the supporting limiting component 2 is detachably connected to the reinforcing connector 3 and / or the supporting frame 1. This is a detachable connection structure, which is more convenient for later maintenance. Moreover, the structure of this energy storage system is simple and easy to operate.

[0053] Furthermore, preferably, each set of support limiting members includes multiple support limiting members 2, and at least two of them are arranged sequentially at intervals along the third preset direction c. That is, the two sides of each sub-installation cavity are equipped with the aforementioned support limiting members 2. Of course, it is not limited to this, and support limiting members 2 may also be provided only on one side of the sub-installation cavity.

[0054] Furthermore, preferably, reinforcing connectors 3 are provided on both sides of any sub-installation cavity along the third preset direction c. Of course, it is not limited to this, and reinforcing connectors 3 can also be provided on only one side of the sub-installation cavity, depending on the actual needs of the design.

[0055] In this embodiment, preferably, as follows: Figures 6 to 10 As shown, the support limiting member 2 includes a body 21, which is an L-shaped structure extending along the second preset direction b, and along the first preset direction a, the L-shaped structure is adapted to the side edge of the lower battery pack 4.

[0056] As can be seen from the structure described above, the body 21 of the support limiting member 2 is L-shaped and is correspondingly set at the side edge of the lower battery pack 4. That is to say, the horizontal plate 211 of the L-shaped support limiting member 2 is set above the top of the lower battery pack 4, and the vertical plate 212 of the L-shaped support limiting member 2 is set on the outside of the lower battery pack 4, which plays the role of limiting the lower battery pack 4. Moreover, the horizontal plate 211 of the L-shaped support limiting member 2 can also be supported at the bottom of the upper battery pack 4, which plays the role of supporting the upper battery pack 4.

[0057] Furthermore, preferably, the distance between the top surface of the battery pack 4 and the horizontal plate 211 is 'a', and 3mm ≤ a ≤ 5mm, leaving a certain gap to avoid misalignment caused by uneven structure. Of course, this is not the only option; this gap may not be provided and can be selected according to actual needs.

[0058] In this embodiment, preferably, as follows: Figure 4 and Figure 8 As shown, the support limiting member 2 also includes a limiting part 22, and the limiting part 22 is disposed at the tail end of the body 21 along the pushing direction of the battery pack 4, for limiting the battery pack 4.

[0059] As can be seen from the structure described above, when the battery pack 4 is continuously pushed into the sub-installation cavity, and the front end of the battery pack 4 touches the limiting part 22 at the tail end of the main body 21, the movement stops, which means that the battery pack 4 has been installed in place, and then the battery pack 4 can be connected with the reinforcing connector 3.

[0060] In this embodiment, preferably, the support limiting member 2 further includes a reinforcing rib (not shown in the figure), and the reinforcing rib is disposed in the opening of the L-shaped body 21, and the reinforcing rib is connected to the body 21. Preferably, the reinforcing rib is a triangular rib.

[0061] As can be seen from the structure described above, the reinforcing ribs increase the strength of the supporting and limiting component 2, improve its support effect on the upper battery pack 4, and make the upper battery pack 4 more stable.

[0062] Furthermore, preferably, there are multiple reinforcing ribs, which are sequentially spaced along the length direction of the support limiting member 2, that is, the second preset direction b.

[0063] Furthermore, preferably, the distance between the top side edge of the battery pack 4 and the reinforcing rib is b, and 3mm≤b≤5mm, leaving a certain gap to avoid misalignment caused by uneven structure. Of course, this is not the only option; this gap may not be provided, depending on actual needs.

[0064] It should be noted that: reinforcing ribs may not be required, depending on the specific needs.

[0065] In this embodiment, preferably, as follows: Figure 8 As shown, the support limiting member 2 and the support frame 1 are detachably connected by a first fastening member, such as a screw or bolt (not shown in the figure). This is a commonly used detachable connection method, which is simple and convenient to operate. Of course, it is not limited to this. The support limiting member 2 and the support frame 1 can also be connected by a detachable connection method such as a buckle, depending on the actual needs.

[0066] Of course, it is not limited to this. The support limiting member 2 can be detachably connected to the reinforcing connecting member 3 directly through the first fastening member such as screws or bolts, or the support limiting member 2 can be detachably connected to both the reinforcing connecting member 3 and the support frame 1 directly through the first fastening member such as screws or bolts. The specific choice depends on the actual needs.

[0067] In this embodiment, preferably, as follows: Figure 2 As shown, the battery pack 4 and the reinforcing connector 3 are detachably connected by a second fastening component, such as a screw or bolt (not shown in the figure). This is a commonly used detachable connection method, which is simple and convenient to operate. Of course, it is not limited to this. The battery pack 4 and the reinforcing connector 3 can also be connected by detachable connection methods such as clips, depending on the actual needs.

[0068] In this embodiment, preferably, as follows: Figures 11 to 13 As shown, the battery pack 4 has multiple connecting portions 431 extending outward on both sides along the third preset direction c, and the connecting portions 431 on both sides of the battery pack 4 are staggered; any connecting portion 431 is detachably connected to the corresponding reinforcing connector 3; when there are multiple mounting cavities, the battery packs 4 located on the same layer in two adjacent mounting cavities share the reinforcing connector 3.

[0069] As can be seen from the structure described above, the connecting parts 431 on both sides of the battery pack 4 are staggered. Therefore, when there are multiple mounting cavities, the sides of the two battery packs 4 on the same layer of two adjacent mounting cavities can share the same row of reinforcing connectors 3. If the connecting parts 431 on both sides of the battery pack 4 are not staggered, the connecting parts 431 of the two battery packs 4 on the same layer of two adjacent mounting cavities will interfere with each other, and they will not be able to share the same row of reinforcing connectors 3. In this case, two rows of reinforcing connectors 3 need to be set, which not only occupies a lot of space, but also wastes materials.

[0070] Furthermore, preferably, the third preset direction c can be the width direction of the liquid cooling plate 43, that is, the width direction of the battery pack 4. Of course, it is not limited to this and can be designed according to actual needs.

[0071] It should be noted that the aforementioned row of reinforcing connectors 3 may include multiple reinforcing connectors 3 arranged sequentially along the second preset direction b, or may include only a single reinforcing connector 3, depending on the actual needs of the design.

[0072] Furthermore, it should be noted that: it is not limited to having multiple connecting portions 431 extending outward on both sides of the battery pack 4 along the third preset direction c; multiple connecting portions 431 may also be provided only on one side of the battery pack 4, depending on actual needs. In this embodiment, preferably, as shown... Figures 11 to 13 As shown, the battery pack 4 includes a cover 41, a battery module 42, and a liquid cooling plate 43; wherein, the battery module 42 is disposed on the upper surface of the liquid cooling plate 43; the cover 41 covers the liquid cooling plate 43 and is connected to the liquid cooling plate 43; the side of the liquid cooling plate 43 is detachably connected to the corresponding reinforcing connector 3, that is, the side of the liquid cooling plate 43 forms the aforementioned connecting part 431.

[0073] As can be seen from the structure described above, the liquid cooling plate 43 directly serves as the base plate of the battery pack 4, eliminating the need for a separate base plate, thus saving materials and space. Moreover, the liquid cooling plate 43, as the base plate, is generally made relatively thick, for example, reaching about 20mm thick, thus having sufficient strength. A connecting part 431 is then provided on its side. When the connecting part 431 is connected to the reinforcing connector 3, the overall structure becomes more stable and robust. Furthermore, the connecting part 431 is located at other height positions on the side of the battery pack 4, making assembly easier.

[0074] It should be noted that, of course, the connection part 431 is not limited to being set on the liquid cooling plate 43. When the battery pack 4 has a bottom plate other than the liquid cooling plate 43, the connection part 431 can be set on the side of the bottom plate. Or when the bottom of the battery pack 4 has a side beam or other structure, the connection part 431 can be set on the side beam. Alternatively, the connection part 431 can be set on other positions and structures of the battery pack 4, depending on the actual needs.

[0075] In this embodiment, preferably, as follows: Figures 14 to 16 As shown, the battery module 42 includes a cell assembly 421, an end plate 422, an insulating plate 423, and a protective component 424; wherein, the cell assembly 421 includes multiple cells, which are arranged sequentially, and foam is provided between any two adjacent cells; along the arrangement direction of the cells, end plates 422 are respectively provided at both ends of the cell assembly 421.

[0076] An insulating plate 423 is disposed on the side of the battery cell where the explosion-proof valve is located, and a through hole 4231 is formed on the insulating plate 423 corresponding to the explosion-proof valve. A protective member 424 is disposed on the side of the insulating plate 423 away from the battery cell, and the protective member 424 extends along the arrangement direction of the battery cell. Both ends of the protective member 424 are respectively connected to two end plates 422. The protective member 424 forms a receiving cavity and an inlet 4241 and an outlet 4242 connected to the receiving cavity. There are multiple inlets 4241, and each inlet corresponds to and is connected to multiple through holes 4231.

[0077] Furthermore, preferably, both ends of the protective member 424 are provided with outlets 4242 along the arrangement direction of the battery cells. Of course, it is not limited to this, and only one end of the protective member 424 may be provided with an outlet 4242, depending on the actual needs.

[0078] As can be seen from the structure described above, when a cell fails, a large amount of gas is generated inside, which causes the explosion-proof valve to open and release gas. The explosion-proof valve will spray out a large amount of electrolyte, which will directly enter the receiving cavity of the protective component 424, thus preventing the electrolyte from spraying onto the aluminum busbar and thus preventing a short circuit. Moreover, the protective component 424 has openings on both sides, which does not affect the venting, further improving the safety and reliability of the battery pack 4.

[0079] It should also be noted that: the outlet 4242 is not limited to being provided at least at one end of the protective member 424 along the arrangement direction of the battery cells; it can also be provided at other locations, such as in the area near both ends of the protective member 424. The outlet 4242 can be provided on the side wall of the protective member 424 near the explosion-proof valve or on the side wall away from the explosion-proof valve, depending on the actual needs. Of course, it is not limited to this; the outlet 4242 can also be arranged along the entire length of the protective member 424. When the outlet 4242 is provided on the side wall of the protective member 424 away from the explosion-proof valve, the size of the outlet 4242 should be made smaller to reduce electrolyte spraying while ensuring normal venting.

[0080] In this embodiment, preferably, as follows: Figure 14 and Figure 15As shown, the battery module 42 also includes a strap 425 for securing the cell assembly 421 and the end plate 422.

[0081] As can be seen from the structure described above, the battery cell assembly 421 and the end plate 422 are bound together by the strap 425, which serves to reinforce the structure.

[0082] In this embodiment, preferably, as follows: Figure 14 As shown, the protective component 424 and the two end plates 422 are detachably connected by a third fastening component, such as a screw or bolt (not shown in the figure). This is a commonly used detachable connection method, which is simple and convenient to operate. Of course, it is not limited to this. The protective component 424 and the end plates 422 can also be connected by detachable connection methods such as snap-fit, depending on the actual needs.

[0083] In this embodiment, preferably, as follows: Figure 9 and Figure 10 As shown, the support frame 1 includes column assemblies 11 and connecting beams 12. There are three sets of column assemblies 11, which are sequentially spaced along a third preset direction c, and a common mounting cavity is formed between any two adjacent sets of column assemblies 11. The three sets of column assemblies 11 are connected by the connecting beams 12. Each set of column assemblies 11 includes multiple columns 111 sequentially spaced along a second preset direction b. Therefore, in this embodiment, there are two connecting beams 12, which are respectively positioned at both ends of each set of column assemblies 11 along the second preset direction b, serving to connect and assemble multiple sets of column assemblies 11 together.

[0084] As can be seen from the structure described above, multiple sets of columns 111 and connecting beams 12 form a frame structure, which serves to accommodate the battery pack 4. Moreover, the structure is simple and easy to process and manufacture.

[0085] It should be noted that the number of sets of the column assembly 11 is not limited to 3 sets, but can also be 2 sets, in which case there is only 1 mounting cavity. Of course, it is not limited to this. The number of sets of the column assembly 11 can also be greater than 3 sets, such as 4 sets, 5 sets or 7 sets, etc., then there are 3 mounting cavities, 4 mounting cavities or 6 mounting cavities respectively. That is to say, the number of mounting cavities is 1 less than the number of sets of the column assembly 11.

[0086] In this embodiment, preferably, as follows: Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, along the first preset direction a, the bottom surface of the bottom reinforcing connector 3 is flush with the bottom surface of the support frame 1 and is used to support the target ground. The bottom surface of the reinforcing connector 3 is in direct contact with the target ground, which provides better support for the battery pack 4 placed on it and makes the bottom battery pack 4 have a smaller gap with the target ground, making the battery pack 4 more stable and preventing the bottom battery pack 4 from being in a high suspended position, thereby reducing stability.

[0087] Of course, it is not limited to this. The bottom surface of the bottom reinforcing connector 3 can also be slightly higher than the bottom surface of the support frame 1. In addition, in order to further ensure the stability of the bottom battery pack 4, the aforementioned support limiting member 2 can also be set at the bottom of the bottom battery pack 4. The specific design depends on the actual needs.

[0088] It should be noted that: the aforementioned first preset direction a is a vertical direction, while the second preset direction b and the third preset direction c are both directions within the horizontal plane. Preferably, the second preset direction b is perpendicular to the third preset direction c. Furthermore, preferably, the pushing direction of the battery pack 4 is the same as the second preset direction b, and after the battery pack 4 and the supporting frame 1 and other structures are installed in place, the arrangement direction of the battery cells is the same as the pushing direction of the battery pack 4 and the second preset direction b. Of course, the first preset direction a, the second preset direction b, the third preset direction c, and the arrangement direction of the battery cells are not limited to the above and can be designed according to actual needs. For example, the first preset direction a can also be a direction that forms an angle with the vertical direction.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage system, characterized in that, include: The support frame includes a support limiting member, a reinforcing connector, and a battery pack. The support frame has at least one main mounting cavity, and each main mounting cavity is provided with multiple sets of support limiting members arranged sequentially and spaced apart along a first preset direction to divide the mounting cavity into multiple sub-mounting cavities along the first preset direction. The battery pack is placed in at least one of the sub-mounting cavities. Along the first preset direction, the supporting limiting members are respectively used to support the bottom of the upper battery pack in two adjacent battery packs and limit the top of the lower battery pack; each of the sub-installation cavities is equipped with the reinforcing connector, and the reinforcing connector is connected to the supporting frame; the supporting limiting members are detachably connected to the reinforcing connector and / or the supporting frame; the battery pack is detachably connected to the reinforcing connector.

2. The energy storage system according to claim 1, characterized in that, The supporting limiting member includes a body, which is an L-shaped structure extending along a second preset direction, and along the first preset direction, the L-shaped structure is adapted to the side apex corner of the lower battery pack.

3. The energy storage system according to claim 2, characterized in that, The supporting limiting member further includes a limiting portion, which is disposed at the tail end of the main body along the pushing direction of the battery pack, for limiting the position of the battery pack; and / or The supporting and limiting member also includes a reinforcing rib plate, which is disposed within the opening of the L-shaped body and is connected to the body.

4. The energy storage system according to claim 1, characterized in that, The support limiting member is detachably connected to the reinforcing connector and / or the support frame via a first fastening member.

5. The energy storage system according to claim 1, characterized in that, The battery pack and the reinforcing connector are detachably connected via a second fastening member.

6. The energy storage system according to claim 1, characterized in that, The battery pack has a plurality of connecting portions extending outward along at least one side along a third preset direction, and the connecting portions on both sides of the battery pack are staggered; each of the connecting portions is detachably connected to the corresponding reinforcing connector; when there are multiple mounting cavities, the battery packs located on the same layer in two adjacent mounting cavities share a row of reinforcing connectors.

7. The energy storage system according to claim 1, characterized in that, The battery pack includes a cover, a battery module, and a liquid cooling plate; wherein the battery module is disposed on the upper surface of the liquid cooling plate; the cover covers the liquid cooling plate and is connected to the liquid cooling plate; the side of the liquid cooling plate is detachably connected to the corresponding reinforcing connector.

8. The energy storage system according to claim 7, characterized in that, The battery module includes a cell assembly, end plates, an insulating plate, and protective components; wherein, the cell assembly includes multiple cells arranged sequentially, and foam is provided between any two adjacent cells; the end plates are respectively provided at both ends of the cell assembly along the arrangement direction of the cells; The insulating plate is disposed on the side of the battery cell where the explosion-proof valve is located, and the insulating plate has a through hole corresponding to the explosion-proof valve; the protective member is disposed on the side of the insulating plate away from the battery cell, and the protective member extends along the arrangement direction of the battery cell, and both ends of the protective member are respectively connected to the two end plates; the protective member forms a receiving cavity and an inlet and an outlet communicating with the receiving cavity, and there are multiple inlets, which correspond one-to-one with and communicate with multiple through holes.

9. The energy storage system according to claim 8, characterized in that, Along the arrangement direction of the battery cells, at least one end of the protective member forms the outlet; and / or The protective component and both end plates are detachably connected via a third fastening component; and / or The battery module also includes straps for securing the cell assembly to the end plate.

10. The energy storage system according to any one of claims 1 to 9, characterized in that, The support frame includes column assemblies and connecting beams; wherein, there are multiple sets of column assemblies, and the multiple sets of column assemblies are sequentially spaced along a third preset direction, and a general mounting cavity is formed between any two adjacent sets of column assemblies; the multiple column assemblies are connected by the connecting beams; each set of column assemblies includes multiple columns sequentially spaced along a second preset direction; and / or Along the first preset direction, the bottom surface of the lowest reinforcing connector is flush with the bottom surface of the support frame and is used to support the target ground; and / or Each set of support limiting members includes multiple support limiting members, and at least two of the support limiting members are sequentially spaced along a third preset direction; and / or The reinforcing connector is provided on both sides of each of the aforementioned sub-installation cavities along the third preset direction.

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