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 width W1 of the cabinet body, the depth D1 of the cabinet body and the height H1 of the cabinet body satisfy: 0.8≤W1 / D1 / H1≤1.2; a plurality of battery cells, wherein the plurality of battery cells are arranged in the cabinet body, wherein the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: (D+H) / L≤0.2; wherein the volume V1 of each battery cell and the volume V3 of the cabinet body satisfy: 0.0009≤V1 / V3≤0.002. The energy storage battery cabinet according to an embodiment of the present invention controls the size parameters of the cabinet body and the size parameters of the battery cells, thereby improving the volume utilization rate and capacity density of the battery cells while taking into account the output voltage of the energy storage battery cabinet.

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 plurality of battery packs are usually placed in an energy storage cabinet, and a plurality of battery cells are contained in the battery pack. However, due to unreasonable size settings of the energy storage cabinet and the battery cells, the volumetric cell utilization rate (Volumetric Cell To System, VCTS) is downgraded twice, resulting in a decrease in the volumetric cell utilization rate. 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 battery cabinet, which controls the size parameters of the cabinet body and the size parameters of the battery cells, while improving the volume utilization rate and capacity density of the battery cells, and taking into account the output voltage of the energy storage battery cabinet.

[0004] According to the present invention, an energy storage system having the above energy storage battery cabinet is also proposed.

[0005] In order to achieve the above-mentioned purpose, according to a first aspect of the present invention, an energy storage battery cabinet is proposed, comprising: a cabinet body, wherein the width W1 of the cabinet body, the depth D1 of the cabinet body and the height H1 of the cabinet body satisfy: 0.8≤W1 / D1 / H1≤1.2; a plurality of battery cells, wherein the plurality of battery cells are arranged in the cabinet body, and the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: (D+H) / L≤0.2; wherein the volume V1 of each of the battery cells and the volume V3 of the cabinet body satisfy: 0.0009≤V1 / V3≤0.002.

[0006] The energy storage battery cabinet according to the embodiment of the present invention has the advantages of high energy density and high battery cell volume utilization by controlling the size parameters of the cabinet body and the size parameters of the battery cells, while also taking into account the output voltage of the energy storage battery cabinet.

[0007] According to some embodiments of the present invention, the battery cell is configured in a rectangular parallelepiped shape.

[0008] According to some embodiments of the present invention, the sum V2 of the volumes of the plurality of battery cells and the volume V3 of the cabinet satisfy: 0.35≤V2 / V3≤0.5.

[0009] According to some embodiments of the present invention, the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: 400mm≤L≤1100mm, 10mm≤D≤40mm, 60mm≤H≤150mm.

[0010] According to some embodiments of the present invention, the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: 800mm≤L≤970mm, 10mm≤D≤30mm, 80mm≤H≤130mm.

[0011] According to some embodiments of the present invention, the width W1 of the cabinet, the depth D1 of the cabinet, and the height H1 of the cabinet satisfy: 600mm≤W1≤1200mm, 700mm≤D1≤1250mm, 600≤H1≤1300mm.

[0012] According to some embodiments of the present invention, the length L of the battery cell and the width W1 of the cabinet satisfy: 0.35≤L / W1<1.

[0013] According to some embodiments of the present invention, the energy storage battery cabinet further includes: a plurality of battery cell layer groups, wherein the plurality of battery cell layer groups are stacked along the height direction of the cabinet and two adjacent battery cell layer groups abut against each other, and each of the battery cell layer groups includes at least one battery cell in one of the width direction and the depth direction of the cabinet and includes a plurality of battery cells in the other direction.

[0014] According to some embodiments of the present invention, the length direction of the battery cells is arranged along the width direction of the cabinet, the thickness direction of the battery cells is arranged along the depth direction of the cabinet, and the width direction of the battery cells is arranged along the height direction of the cabinet.

[0015] According to some embodiments of the present invention, the number of the battery core layer groups is 2 to 10.

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

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

[0018] According to some embodiments of the present invention, after the multiple battery cell layer groups are arranged in the height direction of the cabinet, the overall width is W2, the depth is D2, and the height is H2, wherein 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, and 450mm≤H2≤1150mm.

[0019] 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 height direction of the cabinet abut against each other.

[0020] 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 width direction and the depth direction of the cabinet, 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.

[0021] According to some embodiments of the present invention, the restraint frame also includes: a first side panel and a second side panel, the first side panel and the second side panel are respectively located on both sides of the battery layer group, the first side panel and the second side panel are relatively arranged in the other direction of the width direction and the depth direction of the cabinet, the two ends of the first bottom panel are respectively connected to one end of the first side panel and one end of the second side panel, and the two ends of the second bottom panel are respectively connected to the other end of the first side panel and the other end of the second side panel; wherein, for two battery layer groups adjacent to each other in the height direction of the cabinet, the first bottom panel of one battery layer group is respectively stopped against the first side panel and the second side panel of the other battery layer group, and the second bottom panel of one battery layer group is respectively stopped against the first side panel and the second side panel of the other battery layer group.

[0022] 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 two battery cell layer groups adjacent in the height direction of the cabinet, the limiting columns of one battery cell layer group cooperate with the limiting holes of the other battery cell layer group.

[0023] 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.

[0024] According to some embodiments of the present invention, for two battery cell layer groups adjacent to each other in the height direction of the cabinet, 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.

[0025] 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.

[0026] 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 depth direction of the cabinet, 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 in the height direction of the cabinet, and there is an air duct gap between the battery cells of two adjacent battery cell layer groups in the height direction of the cabinet; wherein, after the air flow flows into the heat dissipation duct from the air outlet, it flows through the multiple battery cell layer groups from the other side in the depth direction of the cabinet and from both sides in the width direction of the cabinet, and flows into the return air outlet through the air duct gap.

[0027] 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 depth direction of the cabinet, and has a third cabinet door on the other side in the depth direction of the cabinet; 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 multiple battery cell layer groups enter and exit the cabinet by opening the third cabinet door.

[0028] According to some embodiments of the present invention, the first cabinet door and the second cabinet door are arranged along the width direction of the cabinet, and the refrigeration unit and the control unit are arranged along the width direction of the cabinet.

[0029] According to some embodiments of the present invention, the one side of the cabinet in the depth direction and the two sides of the cabinet in the height direction are respectively provided with a wire outlet connected to the wiring compartment.

[0030] 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.

[0031] The energy storage system according to the second aspect of the present invention controls the size parameters of the cabinet and the size parameters of the battery cells by utilizing the energy storage battery cabinet according to the first aspect of the present invention, and has the advantages of high energy density and high battery cell volume utilization, while also taking into account the output voltage of the energy storage system.

[0032] 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

[0033] 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:

[0034] Figure 1 is a schematic structural diagram of an energy storage battery cabinet according to an embodiment of the present invention.

[0035] Figure 2 2 is a schematic structural diagram of an energy storage battery cabinet from another perspective according to an embodiment of the present invention.

[0036] Figure 3 is another structural schematic diagram of an energy storage battery cabinet according to an embodiment of the present invention.

[0037] Figure 4 is an exploded view of an energy storage battery cabinet according to an embodiment of the present invention.

[0038] Figure 5 is another structural schematic diagram of an energy storage battery cabinet according to an embodiment of the present invention.

[0039] Figure 6 Schematic diagram of the structure of a cabinet and a battery layer group according to an embodiment of the present invention.

[0040] Figure 7 Schematic diagram of the structure of a battery core layer group according to an embodiment of the present invention.

[0041] Figure 8 yes Figure 7 Detailed view of E.

[0042] Fig. 9 is a schematic diagram of the structure of a constraint framework according to an embodiment of the present invention.

[0043] Fig.10 yes Fig. 9 Detailed view of F.

[0044] Fig.11 Schematic diagram of the structure of a battery cell according to an embodiment of the present invention.

[0045] Fig.12 is a schematic structural diagram of an energy storage system according to an embodiment of the present invention.

[0046] Reference numerals:

[0047] Energy storage battery cabinet 1, energy storage system 2,

[0048] Cabinet 100, air duct gap 110, heat dissipation duct 120, wiring compartment 130, first cabinet door 140, second cabinet door 150, third cabinet door 160, outlet 170,

[0049] Battery layer group 200, battery cell 210,

[0050] 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,

[0051] The limiting column 310, the limiting hole 320, the first fastener 330, the second fastener 340,

[0052] Refrigeration unit 600 and control unit 700 . DETAILED DESCRIPTION

[0053] 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.

[0054] 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.

[0055] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0056] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0057] The energy storage battery cabinet 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0058] like Figure 1-Figure 12 As shown, the energy storage battery cabinet 1 according to an embodiment of the present invention includes a cabinet body 100 and a plurality of battery cells 210 .

[0059] The width W1 of the cabinet 100, the depth D1 of the cabinet 100, and the height H1 of the cabinet 100 satisfy: 0.8≤W1 / D1 / H1≤1.2, and the plurality of battery cells 210 are disposed in the cabinet 100, and the length L of the battery cell 210, the thickness D of the battery cell 210, and the width H of the battery cell 210 satisfy: (D+H) / L≤0.2. Among them, the volume V1 of each battery cell 210 and the volume V3 of the cabinet 100 satisfy: 0.0009≤V1 / V3≤0.002.

[0060] The energy storage battery cabinet 1 can meet the needs of industrial and commercial energy storage and household energy storage. The width direction of the cabinet 100 is the direction indicated by arrow A in the figure, the depth direction of the cabinet 100 is the direction indicated by arrow B in the figure, and the height direction of the cabinet 100 is the direction indicated by arrow C in the figure.

[0061] Furthermore, the width, depth and height of the cabinet 100 are calculated by the distance between its outer sides. Furthermore, the volume of the battery cell 210 is the product of its length L, thickness D and width H, wherein the length L of the battery cell 210 includes the poles at both ends of the battery cell 210 .

[0062] According to the energy storage battery cabinet 1 of the embodiment of the present invention, the width W1 of the cabinet 100, the depth D1 of the cabinet 100 and the height H1 of the cabinet 100 satisfy: 0.8≤W1 / D1 / H1≤1.2, for example, W1 / D1 / H1 is 0.8, 0.9, 0.95, 1, 1.05, 1.1 or 1.2. In other words, the width W1 of the cabinet 100, the depth D1 of the cabinet 100 and the height H1 of the cabinet 100 are close to being arranged in equal lengths, and the shape of the cabinet 100 is always kept as a cube or close to a cube, so that the cabinet 100 can accommodate and arrange multiple battery cells 210, and the arrangement of the battery cells 210 can be convenient, thereby improving the volume utilization rate of the battery cells 210.

[0063] A plurality of battery cells 210 are arranged in the cabinet 100, and the length L of the battery cell 210, the thickness D of the battery cell 210 and the width H of the battery cell 210 satisfy: (D+H) / L≤0.2, that is, the dimension of the battery cell 210 in the length direction is much larger than the dimension of the battery cell 210 in the width direction and the dimension of the battery cell 210 in the thickness direction. The battery cell 210 is a long strip structure, and the structural strength of the battery cell 210 is higher, and the battery cell 210 can store more electricity. The plurality of battery cells 210 can be stacked along the thickness direction of the battery cell 210, or stacked along the width direction of the battery cell 210, and the battery cell 210 can provide more reliable limiting support for the adjacent battery cells 210 in the length direction, thereby being able to better support the adjacent battery cells 210, which is beneficial to improving the overall structural strength of the energy storage battery cabinet 1, and at the same time, the number of battery cells 210 in the cabinet 100 can be set to be larger, so as to improve the volume utilization rate of the battery cells 210.

[0064] The volume V1 of each battery cell 210 and the volume V3 of the cabinet 100 satisfy: 0.0009≤V1 / V3≤0.002. By setting V1 / V3 to be not less than 0.0009 and not more than 0.002, the number of battery cells 210 contained in a unit volume of the energy storage battery cabinet 1 of the present invention is appropriate, and the output voltage of the energy storage battery cabinet 1 can be guaranteed while improving the volume utilization of the energy storage battery cabinet 1.

[0065] For example, if V1 / V3<0.0009, the volume of a single battery cell 210 accounts for a small proportion. To ensure the output voltage of the energy storage system 2, the number of battery cells 210 is within a certain range. Therefore, there will be a lot of space in the energy storage battery cabinet 1 where battery cells 210 are not arranged, and the volume utilization rate of the energy storage battery cabinet 1 will be low. If V1 / V3>0.002, the volume of a single battery cell 210 accounts for too large a proportion. Even if as many battery cells 210 as possible are arranged in the energy storage battery cabinet 1 to improve the volume utilization rate, the number of battery cells 210 will not be too large. Therefore, the overall output voltage of the battery cells 210 cannot reach the output voltage required by the energy storage battery cabinet 1, that is, the output voltage of the energy storage battery cabinet 1 cannot be taken into account.

[0066] In this way, on the one hand, it can be avoided that the volume of the cabinet 100 is much larger than the volume of the battery cells 210, and the cabinet 100 can be filled without too many battery cells 210, which is convenient for assembly, and multiple battery cells 210 can fill the cabinet 100 as much as possible, avoiding a low number of battery cells 210 in a unit volume of the cabinet 100, thereby improving the volume utilization rate of the battery cells 210.

[0067] On the other hand, the volume difference between the cabinet 100 and the battery cells 210 can be avoided to be too small, and the number of battery cells 210 in the cabinet 100 can reach a certain value, thereby ensuring that the overall output voltage of the battery cells 210 is within a certain range, so that the output voltage of the energy storage battery cabinet 1 meets the use requirements.

[0068] Thus, the energy storage battery cabinet 1 according to the embodiment of the present invention has high cell volume utilization and high energy density by controlling the size parameters of the cabinet body 100 and the size parameters of the battery cell 210 , while also taking into account the output voltage of the energy storage system 2 .

[0069] In some specific embodiments of the present invention, Fig.11 As shown, the battery cell 210 is constructed in a rectangular parallelepiped shape. It should be noted that the battery cell 210 can be generally in a rectangular parallelepiped shape, but does not necessarily have to be a strict rectangular parallelepiped shape.

[0070] Compared with cylindrical cells or special-shaped cells with more curved surfaces, except for necessary structures (such as heat insulation treatment) in the energy storage battery cabinet 1, when the rectangular cells 210 are stacked, the space volume in the energy storage battery cabinet 1 can be utilized to the maximum extent, thereby improving the space utilization rate. For example, the rectangular cells 210 can utilize the space in the width direction of the energy storage battery cabinet 1 to the maximum extent in the length direction, and when the rectangular cells 210 are placed side by side along the thickness direction and the height direction, the space in the depth direction of the energy storage battery cabinet 1 can be utilized to the maximum extent.

[0071] In some specific embodiments of the present invention, the sum of the volumes V2 of the plurality of battery cells 210 and the volume V3 of the cabinet 100 satisfy: 0.35≤V2 / V3≤0.5. Based on the limits of V2 / V3 and V1 / V3, the number of battery cells 210 can be determined, thereby determining the output voltage of the energy storage battery cabinet 1 and ensuring the efficiency of the energy storage battery cabinet 1. This solution can simultaneously take into account the volume utilization rate of the energy storage battery cabinet 1 and the output voltage of the energy storage battery cabinet 1, that is, simultaneously take into account the volume utilization rate of the energy storage battery cabinet 1 and the efficiency of the energy storage battery cabinet 1.

[0072] For example, the space in the cabinet 100 other than the space occupied by the battery cell 210 can be used to arrange the control unit 700, the restraint frame 220, the refrigeration unit 600, the fire fighting unit and other units. In this way, while improving the battery cell volume utilization rate of the energy storage battery cabinet 1, there can also be 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 is convenient for the energy storage battery cabinet 1 to be applied to different scenarios, and the battery cell volume utilization rate of the energy storage battery cabinet 1 can be as low as 35% and as high as 50%. The battery cell volume utilization rate of the energy storage battery cabinet 1 of the present invention far exceeds the battery cell volume utilization rate of the energy storage battery cabinet in the related art, and the energy storage battery cabinet 1 of the present invention has a higher energy density.

[0073] In some specific embodiments of the present invention, the length L of the battery cell 210 and the width W1 of the cabinet 100 satisfy: 0.35≤L / W1<1. Further, the length L of the battery cell 210 and the width W1 of the cabinet 100 satisfy: 0.8≤L / W1<1.

[0074] It should be noted that the length direction of the battery cell 210 and the width direction of the cabinet 100 may be completely the same or substantially the same.

[0075] In this way, when the length L of the battery cell 210 increases, the width W1 of the cabinet 100 also increases. When the length L of the battery cell 210 decreases, the width W1 of the cabinet 100 also decreases. On the one hand, it can prevent the gap between the battery cell 210 and the inner wall of the cabinet 100 in the length direction of the battery cell 210 within the unit volume of the cabinet 100 from being too large, thereby improving the battery cell volume utilization rate of the cabinet 100 within the unit volume. On the other hand, it can prevent the length of the battery cell 210 from exceeding the width of the cabinet 100, which facilitates the placement of the battery cell 210 in the cabinet 100, making assembly more convenient and providing more diverse assembly methods.

[0076] In some specific embodiments of the present invention, the length L of the battery cell 210 , the thickness D of the battery cell 210 , and the width H of the battery cell 210 satisfy: 400 mm≤L≤1100 mm, 10 mm≤D≤40 mm, and 60 mm≤H≤150 mm.

[0077] The energy storage battery cabinet 1 used in the home generally adopts a wall-mounted structure, and the battery cell 210 needs to be as flat as possible, and the multiple battery cells 210 need to be as flat as possible after being arranged. In this way, after the energy storage battery cabinet 1 using the battery cell 210 is hung on the wall, the protruding size of the wall is less likely to exceed 500mm, so that it will hardly interfere with the normal activities of the user at home, and better meet the use needs of home users.

[0078] In some specific embodiments of the present invention, the length L of the battery cell 210 , the thickness D of the battery cell 210 , and the width H of the battery cell 210 satisfy: 800 mm≤L≤970 mm, 10 mm≤D≤30 mm, and 80 mm≤H≤130 mm.

[0079] The energy storage battery cabinet 1 used in industry and commerce generally requires that one battery cell 210 can be arranged in the width direction of the cabinet 100, and multiple battery cells 210 can be stacked in the depth direction and the height direction of the cabinet 100. 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.

[0080] In some specific embodiments of the present invention, the width W1 of the cabinet 100, the depth D1 of the cabinet 100, and the height H1 of the cabinet 100 satisfy: 600 mm ≤ W1 ≤ 1200 mm, 700 mm ≤ D1 ≤ 1250 mm, 600 ≤ H1 ≤ 1300 mm.

[0081] In this way, on the one hand, 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. On the other hand, 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.

[0082] For example, the energy storage battery cabinet 1 can be stacked, combined, transported and used in a 20GP container or a 40GP container. A 20GP container can transport 20 energy storage battery cabinets 1, and a 40GP container can transport up to 40 energy storage battery cabinets 1, which significantly reduces the transportation cost.

[0083] In some specific embodiments of the present invention, Figure 7 As shown, the energy storage battery cabinet 1 also includes a plurality of battery cell layer groups 200, which are stacked along the height direction of the cabinet body 100 and two adjacent battery cell layer groups 200 abut against each other, and each battery cell layer group 200 includes at least one battery cell 210 in one direction of the width direction and the depth direction of the cabinet body 100 and includes a plurality of battery cells 210 in the other direction.

[0084] In this way, each battery cell layer group 200 can be provided with multiple battery cells 210, and the dimensions of the battery cell layer group 200 in the depth direction and the width direction of the cabinet 100 can be adjusted according to the number of battery cells 210, so that the dimension of the battery cell layer group 200 in the width direction of the cabinet 100 can be closer to the dimension of the cabinet 100 in the width direction, and the dimension of the battery cell layer group 200 in the depth direction of the cabinet 100 can be closer to the dimension of the cabinet 100 in the depth direction. The cabinet 100 can accommodate more battery cells 210, and the number of battery cells 210 arranged in the battery cell layer group 200 will not affect the dimension of the battery cell layer group 200 in the height direction of the cabinet 100, which is convenient for the arrangement of the battery cell layer group 200 and further improves the volume utilization of the battery cells.

[0085] Moreover, multiple battery cell layer groups 200 are stacked along the height direction of the cabinet 100 and two adjacent battery cell layer groups 200 abut against each other. That is to say, the energy storage battery cabinet 1 of the present invention is limited by the multiple battery cell layer groups 200 themselves, and there is no need to set up an additional limiting and fixing structure, thereby reducing the number of parts. Therefore, more space in the energy storage battery cabinet 1 can be used to arrange the battery cells 210, thereby improving the energy density of the energy storage battery cabinet 1 and the battery cell volume utilization rate.

[0086] In some specific embodiments of the present invention, Figure 3 and Figure 4 As shown, the length direction of the battery cells 210 is arranged along the width direction of the cabinet 100 , the thickness direction of the battery cells 210 is arranged along the depth direction of the cabinet 100 , and the width direction of the battery cells 210 is arranged along the height direction of the cabinet 100 .

[0087] Among them, 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 width direction of the cabinet 100, under the premise of meeting the electrical safety requirements, the length of the battery cell 210 can be roughly the same as the size of the cabinet 100 in the width direction, so that the battery cell 210 can fill the cabinet 100 as much as possible in the width direction of the cabinet 100, and according to the relationship between the thickness of the battery cell 210 and the size of the cabinet 100 in the depth direction, the number of battery cells 210 arranged in each battery layer group 200 along the depth direction of the cabinet 100 can be selected, so that the battery cell 210 can fill the cabinet 100 as much as possible in the depth direction of the cabinet 100, thereby improving the battery cell volume utilization and energy density of the energy storage battery cabinet 1.

[0088] In some specific embodiments of the present invention, Figure 7 As shown, the number of the battery cell layer groups 200 is 2 to 10.

[0089] It can be understood that since the battery cell layer groups 200 need to support each other, when the energy storage battery cabinet 1 is used, one of the two outermost battery cell layer groups 200 will inevitably bear the pressure of the remaining battery cell layer groups 200. Therefore, by setting the number of battery cell layer groups 200 to be no more than 10, it is possible to avoid the outermost battery cell layer groups 200 being broken due to pressure, thereby ensuring the service life of each battery cell layer group 200. In addition, the number of battery cell layer groups 200 is not less than 2, which can increase the battery cell volume utilization rate of the energy storage battery cabinet 1 and extend the power supply time of the energy storage battery cabinet 1.

[0090] In some specific embodiments of the present invention, Figure 7 As shown, there is an air duct gap 110 between the battery cells 210 of two adjacent battery cell layer groups 200 .

[0091] 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.

[0092] In some specific embodiments of the present invention, the size of the air duct gap 110 in the height direction of the cabinet 100 is 5 mm to 20 mm.

[0093] 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 sufficient heat dissipation of the battery cells 210 of each battery cell layer group 200 and avoid thermal runaway caused by heat accumulation. In addition, the distance between the battery cells 210 of the two battery cell layer groups 200 is not greater than 20 mm, which can ensure the battery cell volume utilization rate of the energy storage battery cabinet 1.

[0094] In some specific embodiments of the present invention, after the multiple battery cell layer groups 200 are arranged in the height direction of the cabinet 100, the overall width is W2, the depth is D2, and the height is H2, wherein 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, and 450mm≤H2≤1150mm.

[0095] In this way, on the one hand, the overall size of the multiple battery layer groups 200 will not be too large, suitable for different usage scenarios, and the energy storage battery cabinet 1 using the multiple battery layer groups 200 of the present invention is also easy to move and disassemble, and on the other hand, the overall size of the multiple battery layer groups 200 will not be too small, so the power stored in the multiple battery layer groups 200 can meet the use of most situations, and the endurance is strong. In addition, the overall size of the battery layer group 200 is more compatible with the cabinet 100, and the volume utilization rate is also higher.

[0096] In some specific embodiments of the present invention, Fig. 9As shown, each cell layer group 200 further includes a restraining frame 220 .

[0097] The cells 210 in each cell layer group 200 are arranged on the restraining frame 220 , and the restraining frames 220 of two adjacent cell layer groups 200 in the height direction of the cabinet 100 abut against each other.

[0098] 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. 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.

[0099] In some specific embodiments of the present invention, Fig. 9 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 width direction and the depth direction of the cabinet 100, and the two 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 110 is formed between the first bottom plate 223 and the second bottom plate 224.

[0100] 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.

[0101] According to some specific embodiments of the present invention, Fig. 9As 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 width direction and the other direction of the depth direction of the cabinet 100, 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 to each other in the height direction of the cabinet 100, the first bottom plate 223 of one battery layer group 200 is respectively stopped against 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 against the first side plate 221 and the second side plate 222 of the other battery layer group 200.

[0102] 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.

[0103] In some specific embodiments of the present invention, Fig. 9 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 cell layer groups 200 adjacent in the height direction of the cabinet 100, the limiting posts 310 of one battery cell layer group 200 are matched with the limiting holes 320 of the other battery cell layer group 200.

[0104] 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.

[0105] In some specific embodiments of the present invention, Figure 7-Figure 10 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 .

[0106] 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.

[0107] In some specific embodiments of the present invention, Figure 6 and Figure 7 As shown, for two battery layer groups 200 adjacent in the height direction of the cabinet 100, the first side plate 221 of the other battery layer group 200 is fastened with the first bottom plate 223 and the second bottom plate 224 of one battery layer group 200 by a first fastener 330, and the second side plate 222 of the other battery layer group 200 is fastened with the first bottom plate 223 and the second bottom plate 224 of one battery layer group 200 by a second fastener 340. The first fastener 330 and the second fastener 340 may be threaded fasteners.

[0108] In this way, the relative positions of adjacent battery cell layer groups 200 can be fixed 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.

[0109] In some specific embodiments of the present invention, Figure 6 and Figure 7 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 .

[0110] 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.

[0111] In some specific embodiments of the present invention, Figure 4 As shown, the energy storage battery cabinet 1 further includes a refrigeration unit 600 .

[0112] The refrigeration unit 600 is installed in the cabinet 100 and is located on one side of the cabinet 100 in the depth direction of the cabinet 100. The refrigeration unit 600 has an air outlet and an air return port. The cabinet 100 is configured with a heat dissipation duct 120 connected to the air outlet on one side in the height direction of the cabinet 100. There is an air duct gap 110 between the battery cells 210 of two adjacent battery cell layer groups 200 in the height direction of the cabinet 100. After the airflow flows into the heat dissipation duct 120 from the air outlet, it flows through the multiple battery cell layer groups 200 from the other side in the depth direction of the cabinet 100 and the two sides in the width direction of the cabinet 100, and flows into the air return port through the air duct gap 110.

[0113] 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.

[0114] Furthermore, 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. Furthermore, the refrigeration unit 600 is located on one side of the cabinet 100 in the depth direction of the cabinet 100, so the refrigeration unit 600 will not arrange the cell layer groups 200 along the height direction of the cabinet 100, 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.

[0115] In some specific embodiments of the present invention, Figure 1-Figure 5 As 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 depth direction, and the cabinet 100 has a third cabinet door 160 on the other side in the depth 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 multiple battery cell layer groups 200 enter and exit the cabinet 100 by opening the third cabinet door 160.

[0116] 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.

[0117] In some specific embodiments of the present invention, Figure 4 As shown, the first cabinet door 140 and the second cabinet door 150 are arranged along the width direction of the cabinet 100 , and the refrigeration unit 600 and the control unit 700 are arranged along the width direction of the cabinet 100 .

[0118] In this way, since the battery cell layer group 200 is arranged along the height direction of the cabinet 100, in actual applications, the height direction of the cabinet 100 is generally a vertical direction. By arranging the first cabinet door 140 and the first cabinet door 140 along the width direction of the cabinet 100, that is, the first cabinet door 140 and the first cabinet door 140 both extend along the height direction of the cabinet 100, it is convenient for users to open and close, which is convenient for subsequent maintenance and inspection.

[0119] In some specific embodiments of the present invention, Figure 1-Figure 5 As shown, the cabinet 100 is provided with a wire outlet 170 connected to the wiring compartment 130 on one side in the depth direction and on both sides in the height direction. That is to say, the cabinet 100 has at least three wire outlets 170 connected to the wiring compartment 130, and the wiring harness can be electrically connected to the wiring compartment 130 through the wire outlets 170, which facilitates the wiring layout of the energy storage battery cabinet 1 and avoids the situation where the wire harness is messy or interferes with the wire harness.

[0120] The energy storage system 2 according to an embodiment of the present invention is described below with reference to the accompanying drawings. The energy storage system 2 includes at least one energy storage battery cabinet 1 according to the above-mentioned embodiment of the present invention.

[0121] The energy storage system 2 according to the embodiment of the present invention controls the size parameters of the cabinet and the size parameters of the battery cells by utilizing the energy storage battery cabinet 1 according to the above embodiment of the present invention, and has the advantages of high energy density and high battery cell volume utilization, and can also take into account the output voltage of the energy storage system 2.

[0122] 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.

[0123] 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.

[0124] 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, wherein the width W1 of the cabinet, the depth D1 of the cabinet and the height H1 of the cabinet satisfy: 0.8≤W1 / D1 / H1≤1.2; A plurality of battery cells, wherein the plurality of battery cells are arranged in the cabinet, and the length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: (D+H) / L≤0.2; Wherein, the volume V1 of each of the battery cells and the volume V3 of the cabinet satisfy: 0.0009≤V1 / V3≤0.002; and, The sum V2 of the volumes of the plurality of battery cells and the volume V3 of the cabinet satisfy: 0.35≤V2 / V3≤0.

5.

2. The energy storage battery cabinet according to claim 1, characterized in that: The battery cell is configured in a rectangular parallelepiped shape.

3. The energy storage battery cabinet according to claim 1, characterized in that: The length L of the battery cell, the thickness D of the battery cell and the width H of the battery cell satisfy: 400mm≤L≤1100mm, 10mm≤D≤40mm, 60mm≤H≤150mm.

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

5. The energy storage battery cabinet according to claim 1, characterized in that: The width W1 of the cabinet, the depth D1 of the cabinet and the height H1 of the cabinet satisfy: 600mm≤W1≤1200mm, 700mm≤D1≤1250mm, 600≤H1≤1300mm.

6. The energy storage battery cabinet according to claim 1, characterized in that: The length L of the battery cell and the width W1 of the cabinet satisfy: 0.35≤L / W1<1.

7. The energy storage battery cabinet according to claim 1, characterized in that: Also includes: A plurality of battery layer groups are stacked along the height direction of the cabinet and two adjacent battery layer groups abut against each other, and each battery layer group includes at least one battery cell in one direction of the width direction and the depth direction of the cabinet and includes a plurality of battery cells in the other direction.

8. The energy storage battery cabinet according to claim 7, characterized in that: The length direction of the battery cell is arranged along the width direction of the cabinet, the thickness direction of the battery cell is arranged along the depth direction of the cabinet, and the width direction of the battery cell is arranged along the height direction of the cabinet.

9. The energy storage battery cabinet according to claim 7, characterized in that: The number of the battery core layer groups is 2 to 10.

10. The energy storage battery cabinet according to claim 7, characterized in that: There is an air duct gap between the battery cells of two adjacent battery cell layer groups.

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

12. The energy storage battery cabinet according to claim 7, characterized in that: The multiple battery layer groups arranged in the height direction of the cabinet have an overall width of W2, a depth of D2, and a height of H2, wherein 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, and 450mm≤H2≤1150mm.

13. The energy storage battery cabinet according to claim 7, characterized in that: Each of the battery core layer groups further comprises: A restraint frame, on which the cells in each of the cell layer groups are arranged, and the restraint frames of two adjacent cell layer groups in the height direction of the cabinet abut against each other.

14. The energy storage battery cabinet according to claim 13, characterized in that: The constraint framework includes: A first bottom plate and a second bottom plate are provided at intervals along one of a width direction and a depth direction of the cabinet, two ends of the battery cell in a 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 14, characterized in that: The restraint framework 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 layer group, the first side plate and the second side plate are arranged opposite to each other in the other direction of the width direction and the depth direction of the cabinet, 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; Among them, for the two battery cell layer groups adjacent to each other in the height direction of the cabinet, the first bottom plate of one battery cell layer group respectively abuts 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 respectively abuts against the first side plate and the second side plate of the other battery cell 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 two battery cell layer groups adjacent to each other in the height direction of the cabinet, the limiting pillars of one battery cell layer group are matched with the limiting holes of the other battery cell 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 14, characterized in that: For two battery cell layer groups adjacent to each other in the height direction of the cabinet, 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 7, 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 depth direction of the cabinet, the refrigeration unit has an air outlet and an air return outlet, a heat dissipation air duct connected to the air outlet is constructed on one side of the cabinet in the height direction of the cabinet, and an air duct gap is provided between the battery cells of two adjacent battery cell layer groups in the height direction of the cabinet; Among them, after the airflow flows into the heat dissipation duct from the air outlet, it flows through the multiple battery layer groups from the other side in the depth direction of the cabinet and the two sides in the width direction of the cabinet, and flows into the return air outlet through the duct gap.

21. The energy storage battery cabinet according to claim 7, characterized in that: The cabinet has a wiring compartment, a first cabinet door, and a second cabinet door on one side in the depth direction, and a third cabinet door on the other side in the depth 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 multiple battery cell layer groups enter and exit the cabinet by opening the third cabinet door.

22. The energy storage battery cabinet according to claim 21, characterized in that: The first cabinet door and the second cabinet door are arranged along the width direction of the cabinet, and the refrigeration unit and the control unit are arranged along the width direction of the cabinet.

23. The energy storage battery cabinet according to claim 21, characterized in that: The one side of the cabinet in the depth direction and the two sides of the cabinet in the height direction are respectively provided with wire outlets connected with the wiring compartment.

24. An energy storage system, characterized in that: Comprising at least one energy storage battery cabinet according to any one of claims 1-23.

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