Energy storage battery cabinet and energy storage system having the same

Abstract

The present invention discloses an energy storage battery cabinet and an energy storage system having the same, wherein the energy storage battery cabinet comprises: a cabinet body, wherein the cabinet body has a first direction, a second direction and a third direction orthogonal to each other; at least two battery cell layer groups, wherein the at least two battery cell layer groups are arranged in the cabinet body and arranged along the third direction, wherein each of the battery cell layer groups comprises at least one battery cell in each of the first direction and the second direction, and wherein two battery cell layer groups adjacent to each other in the third direction abut against each other to limit each other in the third direction. According to an embodiment of the present invention, the battery cell layer groups of the energy storage battery cabinet are stacked so that the battery cell layer groups are mutually limited by themselves, and have the advantages of high energy density and large battery cell volume utilization.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to an energy storage battery cabinet and an energy storage system having the same. Background Art

[0002] In the related art, a battery pack is usually placed in an energy storage cabinet, and the battery pack has multiple battery modules, and the battery module has multiple battery cells. In this way, the battery pack and the battery module both have an outer shell and other structures. The battery cells are composed of battery modules through module structural parts, and the battery modules are further formed into battery packs through package structural parts. The volumetric cell utilization rate (Volumetric Cell To System, VCTS) is downgraded twice, and the volumetric cell utilization rate in the energy storage cabinet is reduced. Generally, the volumetric cell utilization rate is less than 28%, resulting in a low energy density. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an energy storage system, in which the cell layers of the energy storage battery cabinet are stacked so that the cell layers are mutually limited by themselves, and have the advantages of high energy density and large cell volume utilization.

[0004] The present invention also provides an energy storage system having the above energy storage battery cabinet.

[0005] In order to achieve the above-mentioned purpose, an energy storage battery cabinet is proposed according to a first aspect of an embodiment of the present invention, comprising: a cabinet body, the cabinet body having a first direction, a second direction and a third direction orthogonal to each other; at least two battery cell layer groups, the at least two battery cell layer groups are arranged in the cabinet body and along the third direction, each of the battery cell layer groups includes at least one battery cell in each of the first direction and the second direction, and two adjacent battery cell layer groups in the third direction stop against each other to limit each other in the third direction.

[0006] The cell layer groups of the energy storage battery cabinet according to the embodiment of the present invention are stacked so that the cell layer groups are mutually limited by themselves, and have the advantages of high energy density and high cell volume utilization.

[0007] According to some embodiments of the present invention, the first direction is the width direction of the cabinet, the second direction is the depth direction of the cabinet, and the third direction is the height direction of the cabinet.

[0008] According to some embodiments of the present invention, the length direction of the battery cells is arranged along the first direction, the thickness direction of the battery cells is arranged along the second direction, and the width direction of the battery cells is arranged along the third direction.

[0009] According to some embodiments of the present invention, the arrangement number X of the battery cells in the first direction satisfies: 1≤X≤2; the arrangement number Y of the battery cells in the second direction satisfies: 1<Y≤26; and the arrangement number Z of the battery cells in the third direction satisfies: 1≤Z≤16.

[0010] According to some embodiments of the present invention, the length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein (D+H) / L≤0.2.

[0011] According to some embodiments of the present invention, the length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein 400mm≤L≤1200mm, 10mm≤D≤40mm, and 60mm≤H≤150mm.

[0012] According to some embodiments of the present invention, the length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein 800mm≤L≤970mm; 10mm≤D≤30mm; 80mm≤H≤130mm.

[0013] According to some embodiments of the present invention, the length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H; the width of the cabinet is W1, the depth of the cabinet is D1, and the height of the cabinet is H1; wherein 0.5≤L / W1<1; and / or 0.5≤L / D1<1.

[0014] According to some embodiments of the present invention, the width of the cabinet is W1, the depth of the cabinet is D1, and the height of the cabinet is H1, wherein 600mm≤W1≤1200mm; 700mm≤D1≤1250mm; 600≤H1≤2600mm.

[0015] According to some embodiments of the present invention, the battery cells of two battery cell layer groups adjacent to each other in the third direction abut against each other.

[0016] According to some embodiments of the present invention, there is an air duct gap between the battery cells of two battery cell layer groups adjacent to each other in the third direction.

[0017] According to some embodiments of the present invention, a dimension of the air duct gap in the third direction is 5 mm to 20 mm.

[0018] According to some embodiments of the present invention, the number of the battery core layer groups is 2 to 8.

[0019] According to some embodiments of the present invention, the overall width of the at least two battery core layer groups after being arranged in the third direction is W2, the depth is D2, and the height is H2, wherein 500mm≤W2≤1100mm; 450mm≤D2≤1000mm; 450mm≤H2≤2450mm.

[0020] According to some embodiments of the present invention, each of the battery cell layer groups further comprises: a restraint frame, the battery cells in each of the battery cell layer groups are arranged on the restraint frame, and the restraint frames of two adjacent battery cell layer groups in the third direction abut against each other.

[0021] According to some embodiments of the present invention, the restraint frame includes: a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are spaced apart along one of the first direction and the second direction, the two ends of the battery cell in the length direction are respectively supported by the first bottom plate and the second bottom plate, and a duct gap is formed between the first bottom plate and the second bottom plate.

[0022] According to some embodiments of the present invention, the restraint frame also includes: a first side plate and a second side plate, the first side plate and the second side plate are respectively located on both sides of the battery cell layer group, the first side plate and the second side plate are relatively arranged in the other direction of the first direction and the second direction, the two ends of the first bottom plate are respectively connected to one end of the first side plate and one end of the second side plate, and the two ends of the second bottom plate are respectively connected to the other end of the first side plate and the other end of the second side plate; wherein, for the two battery cell layer groups adjacent to each other in the third direction, the first bottom plate of one battery cell layer group is respectively stopped against the first side plate and the second side plate of the other battery cell layer group, and the second bottom plate of one battery cell layer group is respectively stopped against the first side plate and the second side plate of the other battery cell layer group.

[0023] According to some embodiments of the present invention, the first bottom plate and the second bottom plate are both provided with one of the limiting columns and the limiting holes, and the first side plate and the second side plate are both provided with the other of the limiting columns and the limiting holes; wherein, for the two battery cell layer groups adjacent in the third direction, the limiting columns of one battery cell layer group cooperate with the limiting holes of the other battery cell layer group.

[0024] According to some embodiments of the present invention, one of the limiting columns and the limiting holes is distributed at both ends of the first bottom plate and at both ends of the second bottom plate; the other of the limiting columns and the limiting holes is distributed at both ends of the first side plate and at both ends of the second side plate.

[0025] According to some embodiments of the present invention, for the two battery cell layer groups adjacent to each other in the third direction, the first side plate of the other battery cell layer group is fastened to the first bottom plate and the second bottom plate of the one battery cell layer group by a first fastener, and the second side plate of the other battery cell layer group is fastened to the first bottom plate and the second bottom plate of the one battery cell layer group by a second fastener.

[0026] According to some embodiments of the present invention, the first fasteners are distributed at two ends of the first side plate; and the second fasteners are distributed at two ends of the second side plate.

[0027] According to some embodiments of the present invention, the volume of each of the battery cells is V1, the number of the battery cells is N, and the volume of the cabinet is V3, wherein 35%<(N*V1) / V3≤50%.

[0028] According to some embodiments of the present invention, each of the battery layer groups further includes: a third bottom plate and a fourth bottom plate, the third bottom plate and the fourth bottom plate are spaced apart along one of the first direction and the second direction, and for two battery layer groups adjacent to each other in the third direction, the third bottom plate and the fourth bottom plate of one of the battery layer groups abut against the battery cells of the other battery layer group, and a duct gap is formed between the third bottom plate and the fourth bottom plate.

[0029] According to some embodiments of the present invention, at least one restraint band is provided on one side of the at least two battery cell layer groups in the third direction, and each of the restraint bands is respectively connected to a pull rod at both ends, and each of the pull rods is connected to the cabinet on the other side of the at least two battery cell layer groups in the third direction.

[0030] According to some embodiments of the present invention, the volume of each of the battery cells is V1, the number of the battery cells is N, and the volume of the cabinet is V3, wherein 35%<(N*V1) / V3≤50%.

[0031] According to some embodiments of the present invention, the energy storage battery cabinet further includes: a refrigeration unit, which is installed in the cabinet and located on one side of the cabinet in the second direction, the refrigeration unit having an air outlet and a return air outlet, and the cabinet is constructed with a heat dissipation duct connected to the air outlet on one side of the third direction, and there is an air duct gap between the battery cells of two adjacent battery cell layer groups in the third direction; wherein, after the air flow flows into the heat dissipation duct from the air outlet, it flows through the at least two battery cell layer groups from the other side in the second direction and the two sides in the first direction, and flows into the return air outlet through the air duct gap.

[0032] According to some embodiments of the present invention, the cabinet has a wiring compartment, a first cabinet door, and a second cabinet door on one side in the second direction, and has a third cabinet door on the other side in the second direction; the energy storage battery cabinet also includes a refrigeration unit and a control unit, and the refrigeration unit and the control unit are both installed in the cabinet; wherein the refrigeration unit is installed on the first cabinet door, the control unit is exposed by opening the first cabinet door, the second cabinet door is used to open and close the wiring compartment, and the at least two battery cell layer groups enter and exit the cabinet by opening the third cabinet door.

[0033] According to some embodiments of the present invention, the first cabinet door and the second cabinet door are arranged along the first direction, and the refrigeration unit and the control unit are arranged along the first direction.

[0034] According to a second aspect of the present invention, an energy storage system is provided, comprising at least one energy storage battery cabinet according to the first aspect of the present invention.

[0035] The energy storage system according to the second aspect of the present invention utilizes the energy storage battery cabinet according to the first aspect of the present invention, wherein the cell layers are stacked so that the cell layers are mutually limited by themselves, and has the advantages of high energy density and large cell volume utilization.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is a schematic structural diagram of an energy storage battery cabinet according to an embodiment of the present invention.

[0039] Figure 2 Schematic diagram of the structure of a battery layer group with a restraint frame according to an embodiment of the present invention.

[0040] Figure 3 yes Figure 2 A partial enlarged view of the D area in the middle.

[0041] Figure 4 Schematic diagram of the structure of a battery core layer group with a restraint belt according to an embodiment of the present invention.

[0042] Figure 5 yes Figure 4 A partial enlarged view of the E area.

[0043] Figure 6is a schematic diagram of the structure of a constraint framework according to an embodiment of the present invention.

[0044] Figure 7 is a schematic structural diagram of an energy storage system according to an embodiment of the present invention.

[0045] Figure 8 is a schematic structural diagram of a cabinet door closed state of an energy storage system according to an embodiment of the present invention.

[0046] Fig. 9 is a schematic structural diagram of an energy storage system in a cabinet door open state according to an embodiment of the present invention.

[0047] Fig.10 is a schematic structural diagram of a cabinet door of an energy storage system according to another embodiment of the present invention.

[0048] Fig.11 Schematic diagram of the structure of a battery cell according to an embodiment of the present invention.

[0049] Reference numerals:

[0050] Energy storage battery cabinet 1, energy storage system 2,

[0051] Cabinet 100, air duct gap 110, heat dissipation air duct 120, wiring compartment 130, first cabinet door 140, second cabinet door 150, third cabinet door 160,

[0052] Battery layer group 200, battery cell 210,

[0053] The restraint frame 220, the first side plate 221, the second side plate 222, the first bottom plate 223, the second bottom plate 224, the stop step 225,

[0054] The limiting column 310, the limiting hole 320, the first fastener 330, the second fastener 340,

[0055] The restraint belt 500, the pull rod 510, the third bottom plate 520, the fourth bottom plate 530,

[0056] Refrigeration unit 600 and control unit 700 . DETAILED DESCRIPTION

[0057] Embodiments of the present invention are described in detail below, examples of which 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 invention, and cannot be understood as limiting the present invention.

[0058] In the description of the present invention, 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 invention 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 limiting the present invention.

[0059] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0060] The energy storage battery cabinet 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0061] like Figure 1-Figure 10 As shown, the energy storage battery cabinet 1 according to an embodiment of the present invention includes a cabinet body 100 and at least two battery cell layer groups 200 .

[0062] The cabinet 100 has a first direction (the direction indicated by arrow A), a second direction (the direction indicated by arrow B) and a third direction (the direction indicated by arrow C) which are orthogonal to each other. At least two battery cell layer groups 200 are arranged in the cabinet 100 and along the third direction. Each battery cell layer group 200 includes at least one battery cell 210 in each of the first direction and the second direction. Two adjacent battery cell layer groups 200 in the third direction abut against each other to limit each other in the third direction.

[0063] Among them, the energy storage battery cabinet 1 can meet the needs of industrial and commercial energy storage as well as household energy storage.

[0064] According to the energy storage battery cabinet 1 of the embodiment of the present invention, the cabinet body 100 has a first direction, a second direction and a third direction which are orthogonal to each other, at least two battery cell layer groups 200 are arranged in the cabinet body 100 and arranged along the third direction, and each battery cell layer group 200 includes at least one battery cell 210 in each of the first direction and the second direction.

[0065] That is to say, the frame inside the cabinet 100 of the energy storage battery cabinet 1 of the present invention is composed of a plurality of battery cell layer groups 200, and the plurality of battery cell layer groups 200 are stacked along the third direction, and the number of battery cells 210 in each battery cell layer group 200 in the first direction and the second direction is at least one, which is conducive to filling the cabinet 100 with the battery cells 210 as much as possible, improving the space utilization of the cabinet 100, and thus having higher energy density.

[0066] In addition, two battery cell layer groups 200 adjacent to each other in the third direction abut against each other to limit each other in the third direction.

[0067] In actual application of the energy storage battery cabinet 1, the third direction of the cabinet body 100 can be a vertical direction, and the bottom surface of each battery cell layer group 200 is stopped against the top surface of the battery cell layer group 200 below it, and under the action of gravity, except for the bottommost battery cell layer group 200, each of the other battery cell layer groups 200 will be pressed to the battery cell layer group 200 adjacent to it below, so that the abutment between the multiple battery cell layer groups 200 is reliable, so that the multiple battery cell layer groups 200 are limited to each other, so as to achieve stable positioning of the multiple battery cell layer groups 200 in the cabinet body 100 and ensure the safety of electrical connection.

[0068] Compared with the energy storage battery cabinet in the related art that fixes the position of the battery cell layer group by setting a structure such as a bracket or a shell, the energy storage battery cabinet 1 of the present invention is limited by multiple battery cell layer groups 200 themselves, and there is no need to set an additional limiting and fixing structure, thereby reducing the number of parts. Therefore, the space in the energy storage battery cabinet 1 can be used more for arranging the battery cells 210, thereby improving the energy density of the energy storage battery cabinet 1 and the battery cell volume utilization rate.

[0069] In this way, the cell layer groups 200 of the energy storage battery cabinet 1 according to the embodiment of the present invention are stacked so that the cell layer groups 200 are mutually limited by themselves, which has the advantages of high energy density and high cell volume utilization.

[0070] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the first direction is the width direction of the cabinet 100, the second direction is the depth direction of the cabinet 100, and the third direction is the height direction of the cabinet 100. That is to say, multiple cell layer groups 200 are arranged along the height direction of the cabinet 100. In the application of the energy storage battery cabinet 1, the height direction of the cabinet 100 is generally the vertical direction. Therefore, each cell layer group 200 can be installed on the cabinet 100 or removed from the cabinet 100 in the horizontal direction, which conforms to the force habit of the human body and is convenient for users to use. Each cell layer group 200 will stop downward against the cell layer group 200 below it under the action of gravity. The stop between multiple cell layer groups 200 is reliable and the limit is stable. Among them, the cell layer group 200 in the lowest direction can stop against the cabinet 100.

[0071] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the length direction of the battery cells 210 is arranged along the first direction, the thickness direction of the battery cells 210 is arranged along the second direction, and the width direction of the battery cells 210 is arranged along the third direction.

[0072] The length of the battery cell 210 is generally greater than the thickness of the battery cell 210 and the width of the battery cell 210. By arranging the length of the battery cell 210 along the first direction, the length of the battery cell 210 can be roughly the same as the size of the cabinet 100 in the first direction, so that the battery cell 210 can fill the cabinet 100 as much as possible in the first direction, and the number of battery cells 210 arranged in each battery cell layer group 200 along the second direction can be determined according to the relationship between the thickness of the battery cell 210 and the size of the cabinet 100 in the second direction, so that the battery cell 210 can fill the cabinet 100 as much as possible in the second direction, so that the battery cell volume utilization rate and energy density of the energy storage battery cabinet 1 can be improved. In addition, the battery cell layer groups are stacked so that the battery cell layer groups are mutually limited by themselves, so as to have the advantages of high energy density and large battery cell volume utilization rate.

[0073] According to some specific embodiments of the present invention, the arrangement number X of the battery cells 210 in the first direction satisfies: 1≤X≤2, the arrangement number Y of the battery cells 210 in the second direction satisfies: 1<Y≤26, and the arrangement number Z of the battery cells 210 in the third direction satisfies: 1≤Z≤16.

[0074] The number of battery cells 210 arranged along the first direction can be 1 to 2, and the overall size of the battery cells 210 in the first direction can be roughly the same as the size of the cabinet 100 in the first direction, so that the battery cells 210 can fill the cabinet 100 as much as possible in the first direction, and the number of battery cells 210 arranged along the second direction can be 1 to 26, and the overall size of the battery cells 210 in the second direction can be roughly the same as the size of the cabinet 100 in the second direction, so that the battery cells 210 can fill the cabinet 100 as much as possible in the first direction. In this way, the battery cell volume utilization and energy density of the energy storage battery cabinet 1 can be improved.

[0075] Furthermore, the number of battery cells 210 arranged in the third direction is no more than 16, which can prevent the battery cells 210 from being too many and difficult to fix in the third direction, thereby ensuring the installation stability of the battery cells 210, making the electrical connection more reliable, and improving the safety of the energy storage battery cabinet 1.

[0076] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the length of the battery cell 210 is L, the thickness of the battery cell 210 is D, and the width of the battery cell 210 is H, wherein (D+H) / L≤0.2. In this way, the battery cell 210 is a long strip structure, the battery cell 210 has high structural strength and high power storage capacity, and each battery cell 210 is reliably limited to the adjacent battery cell layer group 200, and can better support the adjacent battery cell layer group 200.

[0077] According to some specific embodiments of the present invention, Fig.11As shown, the length of the battery cell 210 is L, the thickness of the battery cell 210 is D, and the width of the battery cell 210 is H, wherein 400 mm≤L≤1200 mm, 10 mm≤D≤40 mm, and 60 mm≤H≤150 mm.

[0078] The energy storage battery cabinet 1 used in the home generally adopts a wall-mounted structure, and the battery cells 210 need to be as flat as possible, and the battery cells 210 on each battery cell layer group 200 also need to be as flat as possible after being arranged. In this way, after the energy storage battery cabinet 1 using the above battery cells 210 is hung on the wall, the protruding size of the wall is less likely to exceed 500mm, so that it hardly interferes with the normal activities of users at home, and better meets the use needs of home users.

[0079] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the length of the battery cell 210 is L, the thickness of the battery cell 210 is D, and the width of the battery cell 210 is H, wherein 400 mm≤L≤970 mm; 10 mm≤D≤30 mm; and 80 mm≤H≤130 mm.

[0080] The energy storage battery cabinet 1 used in industry and commerce generally requires one battery cell 210 to be arranged in the first direction, and multiple battery cells 210 can be stacked in the second direction and the third direction. In this way, the energy storage battery cabinet 1 using the above battery cells 210 can store more electricity and has a stronger power supply capacity, meeting the use needs of industry and commerce.

[0081] According to some specific embodiments of the present invention, Figure 1 and Fig.11 As shown, the length of the battery cell 210 is L, the thickness of the battery cell 210 is D, the width of the battery cell 210 is H, the width of the cabinet 100 is W1, the depth of the cabinet 100 is D1, and the height of the cabinet 100 is H1; wherein 0.5≤L / W1<1.

[0082] For example, the width of the cabinet 100 is the distance between the outer surfaces on both sides of the cabinet 100 in the first direction, the depth of the cabinet 100 is the distance between the outer surfaces on both sides of the cabinet 100 in the second direction, and the height of the cabinet 100 is the distance between the outer surfaces on both sides of the cabinet 100 in the third direction.

[0083] If the length of the battery cell 210 is half the width of the cabinet 100, two battery cells 210 can be arranged in the width direction of the cabinet 100; if the length of the battery cell 210 is greater than half the width of the cabinet 100, the length of the battery cell 210 is closer to the width of the energy storage battery cabinet 1, so that the battery cell 210 can occupy at least half of the space of the cabinet 100 in the width direction of the cabinet 100, so that the battery cell volume utilization rate of the energy storage battery cabinet 1 is greater and the energy density is higher.

[0084] In addition, 0.5≤L / D1<1. If the length of the battery cell 210 is half the depth of the cabinet 100, two battery cells 210 can be arranged in the depth direction of the cabinet 100; if the length of the battery cell 210 is greater than half the depth of the cabinet 100, the length of the battery cell 210 is closer to the depth of the energy storage battery cabinet 1, so that the battery cell 210 can occupy at least half of the space of the cabinet 100 in the depth direction of the cabinet 100, so that the battery cell volume utilization rate of the energy storage battery cabinet 1 is higher.

[0085] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the width of the cabinet 100 is W1, the depth of the cabinet 100 is D1, and the height of the cabinet 100 is H1, wherein 600mm≤W1≤1200mm; 700mm≤D1≤1250mm; 600≤H1≤2600mm.

[0086] In this way, the size of the energy storage battery cabinet 1 will not be too large, which can ensure the structural strength of the energy storage battery cabinet 1 and facilitate lifting. The size of the energy storage battery cabinet 1 will not be too small, and the energy storage battery cabinet 1 has sufficient space for arranging the battery cells 210, thereby increasing the power supply time of the energy storage battery cabinet 1.

[0087] According to some specific embodiments of the present invention, the cells 210 of two adjacent cell layer groups 200 in the third direction abut against each other. In this way, no additional protective structure is required between the cells 210, thereby reducing the number of parts in the energy storage battery cabinet 1, and more space in the energy storage battery cabinet 1 can be used to arrange the cells 210, thereby achieving the purpose of improving the cell volume utilization rate and energy density of the energy storage battery cabinet 1.

[0088] According to some specific embodiments of the present invention, Figure 2-Figure 4 As shown, there is an air duct gap 110 between the battery cells 210 of two adjacent battery cell layer groups 200 in the third direction. In this way, the battery cells 210 of two adjacent battery cell layer groups 200 will not directly transfer heat to each other, which can avoid heat accumulation between the battery cells 210, and the heat exchange area between the battery cells 210 of each battery cell layer group 200 and the air in the energy storage battery cabinet 1 is larger, thereby improving the heat dissipation capacity of the battery cells 210.

[0089] According to some specific embodiments of the present invention, Figure 2-Figure 4As shown, the size of the air duct gap 110 in the third direction is 5 mm to 20 mm. In this way, the distance between the battery cells 210 of the two battery cell layer groups 200 is not less than 5 mm, which can facilitate the full heat dissipation of the battery cells 210 of each battery cell layer group 200, avoid the occurrence of thermal runaway caused by heat accumulation, and the distance between the battery cells 210 of the two battery cell layer groups 200 is not more than 16 mm, which can ensure the battery cell volume utilization energy density of the energy storage battery cabinet 1.

[0090] According to some specific embodiments of the present invention, Figure 2-Figure 4 As shown, the number of the cell layer groups 200 is 2 to 18. Since the cell layer groups 200 need to support each other, when the energy storage battery cabinet 1 is used, one of the two outermost cell layer groups 200 must bear the pressure of the remaining cell layer groups 200. Therefore, by setting the number of cell layer groups 200 to be no more than 18, it is possible to avoid the outermost cell layer group 200 from being broken by pressure, thereby ensuring the service life of each cell layer group 200. Moreover, the number of cell layer groups 200 is no less than 2, which can increase the cell volume utilization rate of the energy storage battery cabinet 1 and extend the power supply time of the energy storage battery cabinet 1.

[0091] According to some specific embodiments of the present invention, Figure 2 and Figure 4 As shown, after at least two battery layer groups 200 are arranged in the third direction, the overall width is W2, the depth is D2, and the height is H2, wherein 500mm≤W2≤1100mm; 450mm≤D2≤1000mm; 450mm≤H2≤2450mm.

[0092] In this way, on the one hand, the overall size of the multiple battery cell layer groups 200 will not be too large, which is suitable for different usage scenarios, and the energy storage battery cabinet 1 using the multiple battery cell layer groups 200 of the present invention is also easy to move and disassemble. On the other hand, the overall size of the multiple battery cell layer groups 200 will not be too small, so the power stored in the multiple battery cell layer groups 200 can meet the usage in most situations, and the battery life is strong.

[0093] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, each battery cell layer group 200 further includes a restraining frame 220 , and the battery cells 210 in each battery cell layer group 200 are arranged on the restraining frame 220 , and the restraining frames 220 of two adjacent battery cell layer groups 200 in the third direction abut against each other.

[0094] By setting up the restraint frame 220, multiple battery cells 210 can be fixed by the restraint frame 220, so that the structural strength of the restraint frame 220 itself can be used to assist in improving the structural strength of the battery cells 210, so that the number of battery cell layer groups 200 that can be arranged in the energy storage battery cabinet 1 can be more, for example, the number of battery cell layer groups 200 can be 15, 16, 17, 18, 19 or 20, so that the battery cell volume utilization rate of the energy storage battery cabinet 1 is greater and the energy density is higher.

[0095] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the restraint frame 220 includes a first bottom plate 223 and a second bottom plate 224, and the first bottom plate 223 and the second bottom plate 224 are spaced apart along one of the first direction and the second direction. Both ends of the length direction of the battery cell 210 are respectively supported on the first bottom plate 223 and the second bottom plate 224, and a duct gap is formed between the first bottom plate 223 and the second bottom plate 224.

[0096] The first bottom plate 223 and the second bottom plate 224 are provided to support the battery cell 210. The first bottom plate 223 and the second bottom plate 224 can guide the gas entering the air duct gap 110, thereby improving the heat dissipation efficiency of the gas to the battery cell 210, making the battery cell 210 less susceptible to heat damage, thereby extending the service life of the energy storage battery cabinet 1. In addition, a stop step 225 may be formed on the upper surface of the first bottom plate 223 and the upper surface of the second bottom plate 224, for limiting the battery cell 210 between the first bottom plate 223 and the second bottom plate 224.

[0097] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the restraint frame 220 also includes a first side plate 221 and a second side plate 222, which are respectively located on both sides of the battery layer group 200, and the first side plate 221 and the second side plate 222 are arranged opposite to each other in the first direction and the second direction, and the two ends of the first bottom plate 223 are respectively connected to one end of the first side plate 221 and one end of the second side plate 222, and the two ends of the second bottom plate 224 are respectively connected to the other end of the first side plate 221 and the other end of the second side plate 222. Among them, for two battery layer groups 200 adjacent in the third direction, the first bottom plate 223 of one battery layer group 200 is respectively stopped with the first side plate 221 and the second side plate 222 of the other battery layer group 200, and the second bottom plate 224 of one battery layer group 200 is respectively stopped with the first side plate 221 and the second side plate 222 of the other battery layer group 200.

[0098] In this way, two adjacent battery cell layer groups 200 do not need to be directly stopped by the battery cell 210, thereby reducing the probability of the battery cell 210 being broken by force, and the first side plate 221 and the second side plate 222 are located on opposite sides of the battery cell layer group 200, which can prevent the two adjacent battery cell layer groups 200 from being deflected by force, and the arrangement of the battery cell layer group 200 is more stable.

[0099] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the first bottom plate 223 and the second bottom plate 224 are both provided with one of the limiting posts 310 and the limiting holes 320, and the first side plate 221 and the second side plate 222 are both provided with the other of the limiting posts 310 and the limiting holes 320. Among them, for two battery layer groups 200 adjacent in the third direction, the limiting posts 310 of one battery layer group 200 are matched with the limiting holes 320 of the other battery layer group 200.

[0100] By cooperating with the limiting holes 320 and the limiting posts 310 , the positions of adjacent battery cell layer groups 200 can be fixed to prevent the adjacent battery cell layer groups 200 from rotating relative to each other, thereby achieving higher positioning accuracy, more reliable assembly and electrical connection, and higher safety.

[0101] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, one of the limiting columns 310 and limiting holes 320 is distributed at both ends of the first bottom plate 223 and both ends of the second bottom plate 224 , and the other of the limiting columns 310 and limiting holes 320 is distributed at both ends of the first side plate 221 and both ends of the second side plate 222 .

[0102] In this way, there are more fixing points between adjacent battery cell layer groups 200, which further improves the positioning accuracy between adjacent battery cell layer groups 200, makes the assembly and electrical connection more reliable, and improves safety.

[0103] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, for two battery cell layer groups 200 adjacent in the third direction, the first side plate 221 of the other battery cell layer group 200 is fastened with the first bottom plate 223 and the second bottom plate 224 of one battery cell layer group 200 by a first fastener 330, and the second side plate 222 of the other battery cell layer group 200 is fastened with the first bottom plate 223 and the second bottom plate 224 of one battery cell layer group 200 by a second fastener 340. The first fastener 330 and the second fastener 340 may be threaded fasteners.

[0104] In this way, the relative positions of adjacent battery cell layer groups 200 can be locked to prevent the adjacent battery cell layer groups 200 from being separated during transportation or assembly, so that the adjacent battery cell layer groups 200 can be disassembled and assembled as a whole, which not only has high assembly efficiency, but also can ensure the positioning accuracy between adjacent battery cell layer groups 200 during the entire transportation and assembly process, so that the overall assembly accuracy of the energy storage battery cabinet 1 is higher, and the assembly and electrical connection are more reliable and safer.

[0105] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the first fasteners 330 are distributed at two ends of the first side plate 221 , and the second fasteners 340 are distributed at two ends of the second side plate 222 .

[0106] In this way, there are multiple fixed points between the relative positions of adjacent battery cell layer groups 200, and adjacent battery cell layer groups 200 are less likely to separate, which can more reliably ensure the positioning accuracy between adjacent battery cell layer groups 200, so that the overall assembly accuracy of the energy storage battery cabinet 1 is higher, and the assembly and electrical connection are more reliable and safer.

[0107] According to some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the volume of each battery cell 210 is V1, the number of battery cells 210 is N, and the volume of the cabinet 100 is V3, wherein 35%<(N*V1) / V3≤50%. The space in the cabinet 100 other than the space occupied by the battery cells 210 can be used to arrange the control unit 700, the restraint frame 220, the refrigeration unit 600, and the fire fighting unit.

[0108] In this way, while improving the volume utilization rate of the battery cells in the energy storage battery cabinet 1, there is also sufficient space to arrange other units. The space utilization of the energy storage battery cabinet 1 is more sufficient, and the volume of the energy storage battery cabinet 1 does not need to be set too large, which facilitates the application of the energy storage battery cabinet 1 in different scenarios.

[0109] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, each battery layer group 200 also includes a third bottom plate 520 and a fourth bottom plate 530, and the third bottom plate 520 and the fourth bottom plate 530 are arranged at intervals along one of the first direction and the second direction. For two battery layer groups 200 adjacent to each other in the third direction, the third bottom plate 520 and the fourth bottom plate 530 of one battery layer group 200 are stopped against the battery cell 210 of the other battery layer group 200, and a duct gap 110 is formed between the third bottom plate 520 and the fourth bottom plate 530.

[0110] In this way, two adjacent battery cell layer groups 200 do not need to be directly stopped by the battery cell 210, thereby reducing the probability of the battery cell 210 being broken by force, and the third bottom plate 520 and the fourth bottom plate 530 are located on opposite sides of the battery cell layer group 200, which can prevent the two adjacent battery cell layer groups 200 from being deflected by force, and the arrangement of the battery cell layer group 200 is more stable.

[0111] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, at least one restraint belt 500 is provided on one side of at least two battery cell layer groups 200 in the third direction, and each restraint belt 500 is connected to a pull rod 510 at both ends, and each pull rod 510 is connected to the cabinet 100 at the other side of at least two battery cell layer groups 200 in the third direction.

[0112] Among them, the pull rod 510 can extend along the third direction, and the pull rod 510 is located on both sides of the battery cell layer group 200 in the first direction or the second direction. That is to say, if the pull rod 510 is located on both sides of the battery cell layer group 200 in the first direction, the restraint belt 500 can extend along the first direction, and the pull rod 510 can fix and limit the battery cell layer group 200 in the first direction; if the pull rod 510 is located on both sides of the battery cell layer group 200 in the second direction, the restraint belt 500 can extend along the second direction, and the pull rod 510 can fix and limit the battery cell layer group 200 in the second direction.

[0113] Of course, there can be multiple restraint bands 500. One restraint band 500 can extend along a first direction, and the pull rods 510 connected thereto are located on both sides of the battery cell layer group 200 in the first direction. Another restraint band 500 can extend along a second direction, and the pull rods 510 connected thereto are located on both sides of the battery cell layer group 200 in the second direction. In this way, the pull rods 510 can fix and limit the battery cell layer group 200 in both the first direction and the second direction.

[0114] In addition, through the cooperation of the restraint belt 500 and the pull rod 510, the battery cell layer group 200 can be fixed and limited in the third direction, and the position of the battery cell layer group 200 is not easy to change, which ensures the reliability of the electrical connection of the battery cell 210, and is conducive to improving the safety and structural stability of the energy storage battery cabinet 1. In addition, there is no need to set up an additional fixing structure between at least two battery cell layer groups 200, so there is more space in the energy storage battery cabinet 1 for arranging the battery cell layer group 200, and the battery cell volume utilization rate will be greatly improved.

[0115] According to some specific embodiments of the present invention, Figure 2 and Figure 3As shown, the volume of each battery cell 210 is V1, the number of battery cells 210 is N, and the volume of the cabinet 100 is V3, wherein 35%<(N*V1) / V3≤50%. The space in the cabinet 100 other than the space occupied by the battery cells 210 can be used to arrange the control unit 700, the refrigeration unit 600, the fire fighting unit and other units.

[0116] In this way, while improving the volume utilization and energy density of the cells in the energy storage battery cabinet 1, there is also sufficient space to arrange other units. The space of the energy storage battery cabinet 1 is more fully utilized, and the volume of the energy storage battery cabinet 1 does not need to be set too large, which facilitates the application of the energy storage battery cabinet 1 in different scenarios.

[0117] According to some specific embodiments of the present invention, Figure 1 As shown, the energy storage battery cabinet 1 also includes a refrigeration unit 600, which is installed in the cabinet 100 and is located on one side of the cabinet 100 in the second direction. The refrigeration unit 600 has an air outlet and a return air outlet. The cabinet 100 is configured with a heat dissipation duct 120 connected to the air outlet on one side in the third direction, and there is an air duct gap 110 between the battery cells 210 of two adjacent battery cell layer groups 200 in the third direction. After the airflow flows into the heat dissipation duct 120 from the air outlet, it flows through at least two battery cell layer groups 200 from the other side in the second direction and the two sides in the first direction, and flows into the return air outlet through the air duct gap 110.

[0118] By providing the refrigeration unit 600, the gas in the energy storage battery cabinet 1 is driven to circulate, and heat can be exchanged with the gas in the energy storage battery cabinet 1 to reduce the temperature of the gas in the energy storage battery cabinet 1, so that the low-temperature gas in the energy storage battery cabinet 1 can cool and dissipate the heat of the battery cells 210 in the energy storage battery cabinet 1, thereby avoiding heat accumulation of the battery cells 210 of the energy storage battery cabinet 1 to cause thermal runaway, thereby improving the safety of the energy storage battery cabinet 1.

[0119] Since there is a duct gap 110 between the cells 210 of two adjacent cell layer groups 200, the heat exchange area between the gas in the energy storage battery cabinet 1 and each cell 210 is larger, thereby improving the heat exchange efficiency. In addition, the refrigeration unit 600 is located on one side of the cabinet 100 in the second direction, so the refrigeration unit 600 will not arrange the cell layer groups 200 along the third direction, which can increase the number of cell layer groups 200, thereby increasing the number of cells 210, thereby improving the cell volume utilization rate of the energy storage battery cabinet 1.

[0120] According to some specific embodiments of the present invention, Figure 1 and Fig. 9As shown, the cabinet 100 has a wiring compartment 130, a first cabinet door 140, and a second cabinet door 150 on one side in the second direction, and the cabinet 100 has a third cabinet door 160 on the other side in the second direction. The energy storage battery cabinet 1 also includes a refrigeration unit 600 and a control unit 700, and the refrigeration unit 600 and the control unit 700 are both installed in the cabinet 100. Among them, the refrigeration unit 600 is installed on the first cabinet door 140, and the control unit 700 is exposed by opening the first cabinet door 140. The second cabinet door 150 is used to open and close the wiring compartment 130, and at least two battery cell layer groups 200 enter and exit the cabinet 100 by opening the third cabinet door 160.

[0121] In this way, the clearance size in the energy storage battery cabinet 1 can be used to the extreme, the volume utilization rate of the battery cells in the energy storage battery cabinet 1 is improved, and the disassembly and assembly between the refrigeration unit 600, the control unit 700 and the battery cell layer group 200 is not easy to interfere with each other, and production, maintenance and replacement are more convenient.

[0122] According to some specific embodiments of the present invention, Figure 1 As shown, the first cabinet door 140 and the second cabinet door 150 are arranged along the first direction, and the refrigeration unit 600 and the control unit 700 are arranged along the first direction. In this way, since the battery layer group 200 is arranged along the third direction, in actual application, the third direction of the energy storage battery cabinet 1 is generally a vertical direction. By arranging the first cabinet door 140 and the second cabinet door 150 along the first direction, that is, the first cabinet door 140 and the second cabinet door 150 both extend along the third direction, it is convenient for users to open and close, which is convenient for later maintenance and repair.

[0123] The energy storage system 2 according to an embodiment of the present invention is described below with reference to the accompanying drawings. Figure 8-Figure 10 As shown, the energy storage system 2 includes at least one energy storage battery cabinet 1 according to the above embodiment of the present invention.

[0124] According to the energy storage system 2 of the embodiment of the present invention, by utilizing the energy storage battery cabinet 1 according to the above-mentioned embodiment of the present invention, the battery cell layer groups 200 are stacked so that the battery cell layer groups 200 are mutually limited by themselves, and have the advantages of high energy density and large battery cell volume utilization.

[0125] Other structures and operations of the energy storage battery cabinet 1 and the energy storage system 2 having the same according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0126] In the description of this specification, the description with reference to the terms "specific embodiment", "specific example", etc. 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0127] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy storage battery cabinet, characterized in that: include: A cabinet body, wherein the cabinet body has a first direction, a second direction and a third direction that are orthogonal to each other; At least two battery layer groups, the at least two battery layer groups are arranged in the cabinet and along the third direction, each of the battery layer groups includes at least one battery cell in each of the first direction and the second direction, and two adjacent battery layer groups in the third direction abut against each other to limit each other in the third direction; Each of the battery core layer groups further comprises: A restraint frame, wherein the cells in each of the cell layer groups are arranged on the restraint frame, and the restraint frames of the two cell layer groups adjacent in the third direction abut against each other, and the restraint frame includes a bottom plate and a side plate, wherein for the two cell layer groups adjacent in the third direction, the bottom plate of one cell layer group abuts against the side plate of the other cell layer group.

2. The energy storage battery cabinet according to claim 1, characterized in that: The first direction is the width direction of the cabinet, the second direction is the depth direction of the cabinet, and the third direction is the height direction of the cabinet.

3. The energy storage battery cabinet according to claim 1, characterized in that: The length direction of the battery cells is arranged along the first direction, the thickness direction of the battery cells is arranged along the second direction, and the width direction of the battery cells is arranged along the third direction.

4. The energy storage battery cabinet according to claim 1, characterized in that: The number X of cells arranged in the first direction satisfies: 1≤X≤2; The number Y of cells arranged in the second direction satisfies: 1<Y≤26; The arrangement number Z of the battery cells in the third direction satisfies: 1≤Z≤16.

5. The energy storage battery cabinet according to claim 1, characterized in that: The length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein (D+H) / L≤0.

2.

6. The energy storage battery cabinet according to claim 1, characterized in that: The length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein 400mm≤L≤1200mm, 10mm≤D≤40mm, and 60mm≤H≤150mm.

7. The energy storage battery cabinet according to claim 1, characterized in that: The length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H, wherein 800mm≤L≤970mm; 10mm≤D≤30mm; 80mm≤H≤130mm.

8. The energy storage battery cabinet according to claim 1, characterized in that: The length of the battery cell is L, the thickness of the battery cell is D, and the width of the battery cell is H; The width of the cabinet is W1, the depth of the cabinet is D1, and the height of the cabinet is H1; Among them, 0.5≤L / W1<1; and / or 0.5≤L / D1<1.

9. The energy storage battery cabinet according to claim 1, characterized in that: The width of the cabinet is W1, the depth of the cabinet is D1, and the height of the cabinet is H1, wherein 600mm≤W1≤1200mm; 700mm≤D1≤1250mm; 600≤H1≤2600mm.

10. The energy storage battery cabinet according to claim 1, characterized in that: There is an air duct gap between the battery cells of two battery cell layer groups adjacent to each other in the third direction.

11. The energy storage battery cabinet according to claim 10, characterized in that: The dimension of the air duct gap in the third direction is 5 mm to 20 mm.

12. The energy storage battery cabinet according to claim 1, characterized in that: The number of the battery core layer groups is 2 to 18.

13. The energy storage battery cabinet according to claim 1, characterized in that: The at least two battery layer groups arranged in the third direction have an overall width of W2, a depth of D2, and a height of H2, wherein 500 mm≤W2≤1100 mm; 450 mm≤D2≤1000 mm; and 450 mm≤H2≤2450 mm.

14. The energy storage battery cabinet according to claim 1, characterized in that: The constraint framework includes: A first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are spaced apart along one of the first direction and the second direction, both ends of the battery cell in the length direction are respectively supported by the first bottom plate and the second bottom plate, and a duct gap is formed between the first bottom plate and the second bottom plate.

15. The energy storage battery cabinet according to claim 1, characterized in that: The restraint framework also includes: A first side plate and a second side plate, wherein the first side plate and the second side plate are respectively located on both sides of the battery core layer group, and the first side plate and the second side plate are arranged opposite to each other in the other direction of the first direction and the second direction; A first bottom plate and a second bottom plate, wherein two ends of the first bottom plate are respectively connected to one end of the first side plate and one end of the second side plate, and two ends of the second bottom plate are respectively connected to the other end of the first side plate and the other end of the second side plate; Among them, for the two battery layer groups adjacent to each other in the third direction, the first bottom plate of one battery layer group respectively stops against the first side plate and the second side plate of the other battery layer group, and the second bottom plate of one battery layer group respectively stops against the first side plate and the second side plate of the other battery layer group.

16. The energy storage battery cabinet according to claim 15, characterized in that: The first bottom plate and the second bottom plate are both provided with one of a limiting column and a limiting hole, and the first side plate and the second side plate are both provided with the other of the limiting column and the limiting hole; Wherein, for the two battery layer groups adjacent to each other in the third direction, the limiting pillars of one battery layer group are matched with the limiting holes of the other battery layer group.

17. The energy storage battery cabinet according to claim 16, characterized in that: The one of the limiting column and the limiting hole is distributed at two ends of the first bottom plate and two ends of the second bottom plate; The other of the limiting columns and the limiting holes is distributed at two ends of the first side plate and two ends of the second side plate.

18. The energy storage battery cabinet according to claim 15, characterized in that: For the two battery cell layer groups adjacent to each other in the third direction, the first side plate of the other battery cell layer group is fastened to the first bottom plate and the second bottom plate of the one battery cell layer group by a first fastener, and the second side plate of the other battery cell layer group is fastened to the first bottom plate and the second bottom plate of the one battery cell layer group by a second fastener.

19. The energy storage battery cabinet according to claim 18, characterized in that: The first fasteners are distributed at both ends of the first side plate; The second fasteners are distributed at two ends of the second side plate.

20. The energy storage battery cabinet according to claim 1, characterized in that: The volume of each of the battery cells is V1, the number of the battery cells is N, and the volume of the cabinet is V3, wherein 35%<(N*V1) / V3≤50%.

21. The energy storage battery cabinet according to claim 20, characterized in that: The volume of each of the battery cells is V1, the number of the battery cells is N, and the volume of the cabinet is V3, wherein 35%<(N*V1) / V3≤50%.

22. The energy storage battery cabinet according to claim 1, characterized in that: Also includes: A refrigeration unit, the refrigeration unit is installed in the cabinet and is located on one side of the cabinet in the second direction, the refrigeration unit has an air outlet and an air return outlet, the cabinet is configured with a heat dissipation air duct connected to the air outlet on one side in the third direction, and an air duct gap is provided between the battery cells of two adjacent battery cell layer groups in the third direction; Wherein, after the airflow flows into the heat dissipation duct from the air outlet, it flows through the at least two battery core layer groups from the other side in the second direction and the two sides in the first direction, and flows into the return air outlet through the duct gap.

23. The energy storage battery cabinet according to claim 1, characterized in that: The cabinet has a wiring compartment, a first cabinet door, and a second cabinet door on one side of the cabinet in the second direction, and has a third cabinet door on the other side of the cabinet in the second direction; The energy storage battery cabinet further includes a refrigeration unit and a control unit, and the refrigeration unit and the control unit are both installed in the cabinet; Wherein, the refrigeration unit is installed on the first cabinet door, the control unit is exposed by opening the first cabinet door, the second cabinet door is used to open and close the wiring compartment, and the at least two battery cell layer groups enter and exit the cabinet by opening the third cabinet door.

24. The energy storage battery cabinet according to claim 23, characterized in that: The first cabinet door and the second cabinet door are arranged along the first direction, and the refrigeration unit and the control unit are arranged along the first direction.

25. An energy storage system, characterized in that: Comprising at least one energy storage battery cabinet according to any one of claims 1-24.

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