WO2024012403A1 - Energy storage battery cabinet and energy storage system having same - Google Patents

Abstract

The present application provides an energy storage system, comprising an energy storage battery cabinet. The energy storage battery cabinet comprises a cabinet body and a plurality of cells. The width W1, the depth D1, and the height H1 of the cabinet body satisfy: 0.8 ≤ W1/D1/H1 ≤ 1.2. The plurality of cells are arranged in the cabinet body. The length L, the thickness D, and the width H of the cell satisfy: (D + H)/L ≤ 0.2. The volume V1 of each cell and the volume V3 of the cabinet body satisfy: 0.0009 ≤ V1/V3 ≤ 0.002. According to the energy storage battery cabinet of the present application, by controlling the size parameters of the cabinet body and the size parameters of the cell, an output voltage of the energy storage battery cabinet is considered while the volume utilization rate and the energy density of the cells are improved.

Description

Energy storage battery cabinet and energy storage system having the same

Cross-references to related applications

This application requests the priority of the Chinese patent application submitted to the State Intellectual Property Office of China on July 15, 2022, with application number 202210833942.2 and titled "Energy Storage Battery Cabinet and Energy Storage System with the Same", and all its contents are approved This reference is incorporated into this application.

Technical field

The present application 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 technique

In the related art, multiple battery packs are usually placed in energy storage cabinets, and the battery packs contain multiple cells. However, due to unreasonable size settings of energy storage cabinets and battery cells, the volumetric cell volume utilization (Volumetric Cell To System, VCTS) has been degraded twice, resulting in a decrease in battery cell volume utilization. Generally speaking, the cell volume utilization rate is less than 28%, resulting in low energy density.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of this application is to propose an energy storage battery cabinet that, by controlling the size parameters of the cabinet and the size parameters of the battery cells, can improve the volume utilization and energy density of the battery cells while also taking into account The output voltage of the energy storage battery cabinet.

According to this application, an energy storage system having the above energy storage battery cabinet is also proposed.

In order to achieve the above object, according to the first embodiment of the present application, an energy storage battery cabinet is proposed, including: a cabinet body, a width W1 of the cabinet body, a depth D1 of the cabinet body, and a height of the cabinet body. H1 satisfies: 0.8≤W1/D1/H1≤1.2; multiple battery cores, multiple battery cores are provided in the cabinet, the length L of the battery core, the thickness D of the battery core and the battery core The width H of the core satisfies: (D+H)/L≤0.2; wherein the volume V1 of each battery core and the volume V3 of the cabinet satisfy: 0.0009≤V1/V3≤0.002.

The energy storage battery cabinet according to the embodiment of the present application has the advantages of high energy density and high cell volume utilization by controlling the size parameters of the cabinet and the size parameters of the battery cells. At the same time, it can also take into account the output voltage of the energy storage battery cabinet.

According to some embodiments of the present application, the battery core is configured in a cuboid shape.

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

According to some embodiments of the present application, the length L of the battery core, the thickness D of the battery core, and the width H of the battery core satisfy: 400mm≤L≤1100mm, 10mm≤D≤40mm, 60mm≤H≤150mm .

According to some embodiments of the present application, the length L of the battery core, the thickness D of the battery core, and the width H of the battery core satisfy: 800mm≤L≤970mm, 10mm≤D≤30mm, 80mm≤H≤130mm .

According to some embodiments of the present application, 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 .

According to some embodiments of the present application, the length L of the battery core and the width W1 of the cabinet satisfy: 0.35≤L/W1<1.

According to some embodiments of the present application, the energy storage battery cabinet further includes: a plurality of battery core layer groups, a plurality of the battery core layer groups are stacked along the height direction of the cabinet and two adjacent battery cells are The layer groups stop each other, and each of the battery core layer groups includes at least one battery core in one direction of the width direction and depth direction of the cabinet and includes a plurality of the battery core in the other direction. .

According to some embodiments of the present application, the length direction of the battery core is arranged along the width direction of the cabinet, the thickness direction of the battery core is arranged along the depth direction of the cabinet, and the width direction of the battery core is along the The cabinet is arranged in the height direction.

According to some embodiments of the present application, the number of the battery core layer groups is 2 to 10.

According to some embodiments of the present application, there is an air duct gap between the cells of two adjacent cell layer groups.

According to some embodiments of the present application, the size of the air duct gap in the height direction of the cabinet is 5 mm to 20 mm.

According to some embodiments of the present application, the overall width of the plurality of battery core layer groups arranged in the height direction of the cabinet is W2, the depth is D2, and the height is H2, where 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, 450mm≤H2≤1150mm.

According to some embodiments of the present application, each of the battery core layer groups further includes: a constraint frame, and the batteries in each of the battery core layer groups are arranged on the constraint frame, in the height direction of the cabinet. The restraining frames of the two adjacent battery core layer groups stop each other.

According to some embodiments of the present application, the restraint frame includes: a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate being spaced apart along one of the width direction and the depth direction of the cabinet body. , both ends of the battery core in the length direction are respectively supported on the first bottom plate and the second bottom plate, and an air duct gap is formed between the first bottom plate and the second bottom plate.

According to some embodiments of the present application, the restraint frame further 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 core layer group, The first side plate and the second side plate are arranged oppositely in the other direction of the width direction and the depth direction of the cabinet, and the two ends of the first bottom plate are respectively connected with the first side plate. One end is connected to one end of the second side plate, and two ends of the second bottom plate are connected to the other end of the first side plate and the other end of the second side plate respectively; wherein, for the cabinet There are two battery core layer groups adjacent in the height direction of the body, the first bottom plate of one battery core layer group respectively stops with the first side plate and the second side plate of the other battery core layer group, and the The second bottom plate of one electric core layer group stops against the first side plate and the second side plate of the other electric core layer group respectively.

According to some embodiments of the present application, the first bottom plate and the second bottom plate are each provided with one of a limiting column and a limiting hole, and the first side plate and the second side plate are each provided with one of a limiting post and a limiting hole. The other one of the limiting post and the limiting hole; wherein, for the two battery core layer groups adjacent in the height direction of the cabinet, the limiting post of one battery core layer group matches The limit hole in another cell layer group.

According to some embodiments of the present application, one of the limiting posts and the limiting holes is distributed at both ends of the first bottom plate and both ends of the second bottom plate; the limiting posts and the other one of the limiting holes is distributed at both ends of the first side plate and both ends of the second side plate.

According to some embodiments of the present application, for the two battery core layer groups adjacent in the height direction of the cabinet, the first side plate of the other battery core layer group is connected to the first side plate through a first fastener. The first bottom plate and the second bottom plate of the one electric core layer group are fastened, and the second side plate of the other electric core layer group is connected to the first bottom plate and the first bottom plate of the one electric core layer group through a second fastener. The second bottom plate is fastened.

According to some embodiments of the present application, the first fasteners are distributed at both ends of the first side plate; and the second fasteners are distributed at both ends of the second side plate.

According to some embodiments of the present application, the energy storage battery cabinet further 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, so The refrigeration unit has an air outlet and a return air outlet, and a cooling air duct connected to the air outlet is constructed on one side of the cabinet in the height direction of the cabinet, and is adjacent to the air outlet in the height direction of the cabinet. There is an air duct gap between the cells of the two cell layer groups; wherein, after the airflow flows into the cooling air duct from the air outlet, it flows from the other side in the depth direction of the cabinet and all The two sides of the cabinet body in the width direction flow through the plurality of battery core layer groups, and flow into the return air outlet through the air duct gap.

According to some embodiments of the present application, the cabinet has a wiring compartment, a first cabinet door and a second cabinet door on one side in the depth direction, and the cabinet has a third cabinet on the other side in the depth direction. Cabinet door; the energy storage battery cabinet also includes a refrigeration unit and a control unit, both of which are 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 plurality of battery core layer groups enter and exit the cabinet by opening the third cabinet door. .

According to some embodiments of the present application, the first cabinet door and the second cabinet door are arranged along the width direction of the cabinet body, and the refrigeration unit and the control unit are arranged along the width direction of the cabinet body. arrangement.

According to some embodiments of the present application, 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 outlet openings connected to the wiring compartment.

According to the second embodiment of the present application, an energy storage system is proposed, including at least one energy storage battery cabinet according to the first embodiment of the present application.

According to the energy storage system according to the second embodiment of the present application, by using the energy storage battery cabinet according to the first embodiment of the present application, the cabinet is controlled The size parameters and battery cell size parameters have the advantages of high energy density and high cell volume utilization, and can also take into account the output voltage of the energy storage system.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

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

Figure 1 is a schematic structural diagram of an energy storage battery cabinet according to an embodiment of the present application.

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

Figure 3 is another structural schematic diagram of an energy storage battery cabinet according to an embodiment of the present application.

Figure 4 is an exploded view of an energy storage battery cabinet according to an embodiment of the present application.

Figure 5 is another structural schematic diagram of an energy storage battery cabinet according to an embodiment of the present application.

Figure 6 is a schematic structural diagram of a cabinet and a battery core layer group according to an embodiment of the present application.

Figure 7 is a schematic structural diagram of an electric core layer group according to an embodiment of the present application.

FIG. 8 is a detailed view at E of FIG. 7 .

Figure 9 is a schematic structural diagram of a restraint frame according to an embodiment of the present application.

FIG. 10 is a detailed view at F of FIG. 9 .

Figure 11 is a schematic structural diagram of a battery core according to an embodiment of the present application.

Figure 12 is a schematic structural diagram of an energy storage system according to an embodiment of the present application.

Reference signs:

Energy storage battery cabinet 1, energy storage system 2,

Cabinet 100, air duct gap 110, cooling air duct 120, wiring compartment 130, first cabinet door 140, second cabinet door 150, third cabinet door 160, cable outlet 170,

Cell layer group 200, cell 210,

Constraint frame 220, first side plate 221, second side plate 222, first bottom plate 223, second bottom plate 224, stop step 225,

Limiting column 310, limiting hole 320, first fastener 330, second fastener 340,

Refrigeration unit 600, control unit 700.

Detailed ways

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

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the application.

In the description of this application, "first feature" and "second feature" may include one or more of these features.

In the description of this application, "plurality" means two or more than two, and "several" means one or more.

The energy storage battery cabinet 1 according to the embodiment of the present application is described below with reference to the accompanying drawings.

As shown in Figures 1-12, the energy storage battery cabinet 1 according to the embodiment of the present application includes a cabinet 100 and a plurality of battery cells 210.

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. Multiple battery cells 210 set In the cabinet 100, the length L of the battery core 210, the thickness D of the battery core 210, and the width H of the battery core 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.

Among them, 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 pointed by arrow A in the figure, the depth direction of the cabinet 100 is the direction pointed by arrow B in the figure, and the height direction of the cabinet 100 is pointed by arrow C in the figure. direction.

Furthermore, the width, depth and height of the cabinet 100 are calculated based on the distance between its outer sides. Furthermore, the volume of the battery core 210 is the product of its length L, thickness D, and width H. The length L of the battery core 210 is measured including the poles at both ends of the battery core 210 .

According to the energy storage battery cabinet 1 of the embodiment of the present application, 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. That is to say, the width W1 of the cabinet 100, the depth D1 of the cabinet 100, and the height H1 of the cabinet 100 tend to be arranged in equal lengths, and the shape of the cabinet 100 is always maintained as a cube or close to a cube shape. It is convenient for the cabinet 100 to accommodate and arrange multiple battery cores 210 and the arrangement of the battery cores 210, thereby improving the volume utilization of the battery cores 210.

A plurality of battery cells 210 are provided in the cabinet 100. The length L of the battery core 210, the thickness D of the battery core 210, and the width H of the battery core 210 satisfy: (D+H)/L≤0.2. That is to say, the battery core 210 The size of the length direction of the battery core 210 is much larger than the size of the battery core 210 in the width direction and the thickness direction of the battery core 210. The battery core 210 has a long strip structure. The structural strength of the battery core 210 is higher, and the storage of the battery core 210 is Lots of power. Multiple battery cores 210 can be stacked along the thickness direction of the battery core 210 , or stacked along the width direction of the battery core 210 , and the battery core 210 can provide more reliable limiting support to adjacent battery cores 210 in its length direction, and thus It can better support the adjacent battery cells 210, which is conducive to improving the overall structural strength of the energy storage battery cabinet 1. 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 of the battery cells 210. Rate. It can be understood that the greater the number of battery cores 210 provided in the unit volume of the cabinet 100, the higher the volume utilization rate of the battery cells 210; the smaller the number of battery cells 210 provided in the unit volume of the cabinet 100, Then the volume utilization rate of the battery core 210 is lower.

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. By setting V1/V3 to no less than 0.0009 and no more than 0.002, the energy storage battery cabinet 1 of the present application contains an appropriate number of cells 210 per unit volume, which improves the volume utilization of the energy storage battery cabinet 1. The output voltage of the energy storage battery cabinet 1 can be guaranteed.

For example, if V1/V3 <0.0009, the volume proportion of a single battery cell 210 is small. To ensure the output voltage of the energy storage system 2, the number of battery cells 210 must be within a certain range. Therefore, the number of battery cells 210 in the energy storage battery cabinet 1 There will be a lot of space where the 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 proportion of a single battery cell 210 is too large. Even if as many battery cells 210 are arranged in the energy storage battery cabinet 1 to improve the volume utilization, the number of battery cells 210 will not be too large. Therefore, the overall output voltage of the battery cell 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.

Therefore, by setting 0.0009≤V1/V3≤0.002, it can be avoided that the volume of the cabinet 100 is much larger than the volume of the battery cells 210, so that the cabinet 100 can be filled without too many battery cells 210, which facilitates assembly, and multiple batteries The cores 210 can be filled into the cabinet 100 as much as possible, which avoids the low number of battery cells 210 in the cabinet 100 per unit volume, thereby improving the volume utilization of the battery cells 210. In addition, by setting 0.0009≤V1/V3 ≤0.002, it can also prevent the difference between the volume of the cabinet 100 and the battery cells 210 from being too small, so that 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. within, so that the output voltage of the energy storage battery cabinet 1 meets the usage requirements.

In this way, by controlling the size parameters of the cabinet 100 and the size parameters of the battery cells 210, the energy storage battery cabinet 1 according to the embodiment of the present application has the advantages of high battery cell volume utilization and high energy density, and can also take into account the energy storage system 2 the output voltage.

In some specific embodiments of the present application, as shown in FIG. 11 , the battery core 210 is configured in a rectangular parallelepiped shape. It should be noted that the battery core 210 can be generally in the shape of a rectangular parallelepiped, and does not necessarily have to be a strict rectangular parallelepiped.

Compared with cylindrical cells or special-shaped cells with many curved surfaces, in addition to necessary structures (such as heat insulation) in the energy storage battery cabinet 1, when the rectangular cells 210 are stacked, energy storage can be maximized. The space volume inside the battery cabinet 1 improves space utilization. For example, the rectangular parallelepiped-shaped battery core 210 can maximize the use of the width direction space of the energy storage battery cabinet 1 in its length direction, and the rectangular parallelepiped-shaped battery core 210 can maximize its use along its thickness direction and height direction. When placed side by side, the space in the depth direction of the energy storage battery cabinet 1 can be utilized to the greatest extent.

In some specific embodiments of the present application, the sum V2 of the volumes 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 limitations 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 take into account the efficiency of the energy storage battery cabinet 1 at the same time. Volume utilization and the output voltage of the energy storage battery cabinet 1, that is, taking into account both the volume utilization rate of the energy storage battery cabinet 1 and the efficiency of the energy storage battery cabinet 1.

For example, the space in the cabinet 100 except the space occupied by the battery cells 210 can be used to arrange units such as the control unit 700, the restraint frame 220, the refrigeration unit 600, and the fire protection unit. In this way, while improving the cell volume utilization of the energy storage battery cabinet 1, there is also sufficient space to arrange other units, and the space of the energy storage battery cabinet 1 is more fully utilized. The volume of the energy storage battery cabinet 1 does not need to be too large, so that the energy storage battery cabinet 1 can be used in different scenarios. The cell volume utilization rate of the energy storage battery cabinet 1 can reach a minimum of 35% and a maximum of 50%. The cell volume utilization rate of the energy storage battery cabinet 1 of the present application far exceeds the cell volume utilization rate of the energy storage battery cabinet in the related art, and the energy density of the energy storage battery cabinet 1 of the present application is higher.

In some specific embodiments of the present application, the length L of the battery core 210 and the width W1 of the cabinet 100 satisfy: 0.35≤L/W1<1. Further, the length L of the battery core 210 and the width W1 of the cabinet 100 satisfy: 0.8≤L/W1<1.

It should be noted that the length direction of the battery core 210 and the width direction of the cabinet 100 may be exactly the same or substantially the same.

In this way, when the length L of the battery core 210 increases, the width W1 of the cabinet 100 also increases. When the length L of the battery core 210 decreases, the width W1 of the cabinet 100 also decreases. In this way, on the one hand, it is possible to prevent the gap between the battery core 210 and the inner wall of the cabinet 100 from being too large in the length direction of the battery core 210 within the unit volume of the cabinet 100, thereby improving the battery cell volume utilization of the cabinet 100 within the unit volume. On the other hand, it can prevent the length of the battery core 210 from exceeding the width of the cabinet 100, making it easier to place the battery core 210 into the cabinet 100, making assembly more convenient, and the assembly methods more diverse.

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

The energy storage battery cabinet 1 used in the home generally adopts a wall-mounted structure. The battery cells 210 need to be in a flat shape as much as possible, and multiple battery cells 210 also need to be in a flat shape as much as possible after being arranged. In this way, after the energy storage battery cabinet 1 using the above-mentioned battery cells 210 is hung on the wall, the protruding size from the wall is less likely to exceed 500 mm, thereby hardly interfering with the user's normal activities at home and better meeting the needs of home users.

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

The energy storage battery cabinet 1 used in industry and commerce generally requires one battery cell 210 to be arranged in the width direction of the cabinet 100, and multiple battery cells 210 to be stacked in the depth direction and height direction of the cabinet 100. In this way, the energy storage battery cabinet 1 using the above-mentioned battery cells 210 can store more electricity and have stronger power supply capability.

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

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 hoisting. On the other hand, the size of the energy storage battery cabinet 1 will not be too small. The cabinet 1 has sufficient space for arranging the battery cells 210 to increase the power supply time of the energy storage battery cabinet 1 .

For example, energy storage battery cabinets 1 can be stacked, combined, transported and used in a 20GP container or a 40GP container. 20 energy storage battery cabinets 1 can be transported in a 20GP container, and a maximum of 40 energy storage battery cabinets can be transported in a 40GP container. 1. Transportation costs are significantly reduced.

In some specific embodiments of the present application, as shown in FIG. 7 , the energy storage battery cabinet 1 also includes multiple battery core layer groups 200 . The multiple battery core layer groups 200 are stacked along the height direction of the cabinet 100 and are adjacent to each other. Each battery core layer group 200 stops against each other, and each battery core layer group 200 includes at least one battery core 210 in one direction of the width direction and the depth direction of the cabinet 100 and includes a plurality of battery cores 210 in the other direction. .

In this way, each battery core layer group 200 can be provided with multiple battery cores 210 , and the size of the battery core layer group 200 in the depth direction and the width direction of the cabinet 100 can be determined according to the number of battery cores 210 Adjust so that the size of the cell layer group 200 in the width direction of the cabinet 100 can be closer to the size of the cabinet 100 in the width direction, and the size of the cell layer group 200 in the depth direction of the cabinet 100 can be Being closer to the size of the cabinet 100 in the depth direction, the cabinet 100 can accommodate more battery cells 210 . Moreover, the number of cells 210 arranged in the cell layer group 200 will not affect The size of the battery core layer group 200 in the height direction of the cabinet 100 facilitates the arrangement of the battery core layer group 200 and further improves the battery core volume utilization.

Moreover, multiple battery core layer groups 200 are stacked along the height direction of the cabinet 100 and two adjacent battery core layer groups 200 stop each other. That is to say, the energy storage battery cabinet 1 of the present application uses multiple battery core layer groups. 200 has its own limit, no additional limit fixed structure is needed, and the number of parts is reduced. Therefore, more space in the energy storage battery cabinet 1 can be used to arrange the battery cells 210, which improves the energy density and power of the energy storage battery cabinet 1. Core volume utilization.

In some specific embodiments of the present application, as shown in FIGS. 3 and 4 , the length direction of the battery core 210 is arranged along the width direction of the cabinet 100 , and the thickness direction of the battery core 210 is arranged along the depth direction of the cabinet 100 . The width direction of the core 210 is arranged along the height direction of the cabinet 100 .

The length of the battery core 210 is generally greater than the thickness and width of the battery core 210 . By arranging the length of the battery core 210 along the width direction of the cabinet 100, on the premise of meeting the electrical safety requirements, the length of the battery core 210 can be approximately the same as the size of the cabinet 100 in the width direction, so that the battery core 210 can be placed in the cabinet. The cabinet 100 should be filled as fully as possible in the width direction of the body 100, and each cell layer group 200 can be selected along the depth direction of the cabinet 100 according to the relationship between the thickness of the battery core 210 and the size of the cabinet 100 in the depth direction. Arranging the number of battery cells 210 also enables the battery cells 210 to fill the cabinet 100 as fully 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 .

In some specific embodiments of the present application, as shown in FIG. 7 , the number of battery core layer groups 200 is 2 to 10.

It can be understood that 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 other cell layer groups 200 , therefore by setting the number of battery core layer groups 200 to no more than 10, it is possible to prevent the outermost battery core layer group 200 from being broken by pressure, ensuring the service life of each battery core layer group 200, and ensuring the safety of the battery core layer group 200. The number is not less than 2, which can increase the cell volume utilization of the energy storage battery cabinet 1 and extend the power supply time of the energy storage battery cabinet 1.

In some specific embodiments of the present application, as shown in FIG. 7 , there is an air duct gap 110 between the cells 210 of two adjacent cell layer groups 200 .

In this way, the cells 210 of two adjacent cell layer groups 200 will not directly transfer heat to each other, which can avoid heat accumulation between the cells 210, and the cells 210 of each cell layer group 200 are connected to the storage device. The air heat exchange area in the battery cabinet 1 can be larger and the heat dissipation capacity of the battery core 210 can be improved.

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

In this way, the distance between the cells 210 of the two cell layer groups 200 is not less than 5 mm, which can facilitate sufficient heat dissipation of the cells 210 of each cell layer group 200 and avoid thermal runaway caused by heat accumulation. Moreover, the distance between the cells 210 of the two cell layer groups 200 is no more than 20 mm, which can ensure the cell volume utilization of the energy storage battery cabinet 1 .

In some specific embodiments of the present application, the overall width of multiple cell layer groups 200 arranged in the height direction of the cabinet 100 is W2, the depth is D2, and the height is H2, where 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, 450mm≤H2≤1150mm.

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

In some specific embodiments of the present application, as shown in FIG. 9 , each cell layer group 200 further includes a constraint frame 220 .

The cells 210 in each cell layer group 200 are arranged on the restraint frame 220 , and the restraint frames 220 of two adjacent cell layer groups 200 in the height direction of the cabinet 100 stop each other.

By arranging the restraining frame 220, the restraining frame 220 can be used to fix multiple cells 210, so that the structural strength of the restraining frame 220 itself can be used to assist in improving the structural strength of the cells 210. The cell layer groups that can be arranged in the energy storage battery cabinet 1 The number 200 can be more. For example, the number of cell layer groups 200 can be 15, 16, 17, 18, 19 or 20, so that the cell volume utilization rate of the energy storage battery cabinet 1 is greater and the energy density is higher.

In some specific embodiments of the present application, as shown in FIG. 9 , the restraint frame 220 includes a first bottom plate 223 and a second bottom plate 224 . The first bottom plate 223 and the second bottom plate 224 are along the width direction and depth direction of the cabinet 100 . are arranged at intervals in one direction, and both ends of the battery core 210 in the length direction are supported on the first bottom plate 223 and the second bottom plate 224 respectively. An air duct gap 110 is formed between the first bottom plate 223 and the second bottom plate 224 .

The arrangement of the first bottom plate 223 and the second bottom plate 224 can support the battery core 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 resistance of the gas to the battery core 210 . With high heat dissipation efficiency, the battery cell 210 is less susceptible to thermal damage and extends the energy storage capacity. The service life of the pool cabinet 1. Furthermore, stop steps 225 may be formed on the upper surfaces of the first bottom plate 223 and the second bottom plate 224 for limiting the battery core 210 between the first bottom plate 223 and the second bottom plate 224 .

According to some specific embodiments of the present application, as shown in FIG. 9 , the constraint frame 220 also includes a first side plate 221 and a second side plate 222 . The first side plate 221 and the second side plate 222 are respectively located in the cell layer group 200 On both sides of the cabinet 100, the first side plate 221 and the second side plate 222 are arranged oppositely along the width direction and the depth direction of the cabinet 100. The two ends of the first bottom plate 223 are respectively connected with one end of the first side plate 221 and One end of the second side plate 222 is connected to each other, and two ends of the second bottom plate 224 are connected to the other ends of the first side plate 221 and the other end of the second side plate 222 respectively. Among them, for the two battery core layer groups 200 that are adjacent in the height direction of the cabinet 100, the first bottom plate 223 of one battery core layer group 200 is respectively connected with the first side plate 221 and the first side plate 221 of the other battery core layer group 200. The two side plates 222 stop, and the second bottom plate 224 of one cell layer group 200 stops with the first side plate 221 and the second side plate 222 of the other cell layer group 200 respectively.

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

In some specific embodiments of the present application, as shown in FIG. 9 , one of the limiting posts 310 and the limiting holes 320 is provided on both the first bottom plate 223 and the second bottom plate 224 , and the first side plate 221 and the second The side plates 222 are each provided with the other one of a limiting post 310 and a limiting hole 320 . Among them, for the two battery core layer groups 200 adjacent in the height direction of the cabinet 100, the limiting post 310 of one battery core layer group 200 is matched with the limiting hole 320 of the other battery core layer group 200.

Through the cooperation of the limiting hole 320 and the limiting column 310, the position between the adjacent battery core layer groups 200 can be fixed, preventing relative rotation between the adjacent battery core layer groups 200, and the positioning accuracy is higher, and the assembly and electrical wiring are improved. The connection is more reliable and secure.

In some specific embodiments of the present application, as shown in FIGS. 7-10 , one of the limiting posts 310 and the limiting holes 320 is distributed at both ends of the first bottom plate 223 and both ends of the second bottom plate 224 , the other one of the limiting posts 310 and the limiting holes 320 is distributed at both ends of the first side plate 221 and both ends of the second side plate 222 .

In this way, there are more fixed points between adjacent battery core layer groups 200, which further improves the positioning accuracy between adjacent battery core layer groups 200, makes assembly and electrical connection more reliable, and has high safety.

In some specific embodiments of the present application, as shown in FIGS. 6 and 7 , for two battery core layer groups 200 that are adjacent in the height direction of the cabinet 100 , the first component of the other battery core layer group 200 is The side plate 221 is fastened to the first bottom plate 223 and the second bottom plate 224 of the above-mentioned one battery core layer group 200 through the first fastener 330, and the second side plate 222 of the above-mentioned other battery core layer group 200 is fastened through the second fastener. The component 340 is fastened to the first bottom plate 223 and the second bottom plate 224 of the above-mentioned one cell layer group 200. Wherein, the first fastener 330 and the second fastener 340 may be threaded fasteners.

In this way, the relative position between adjacent battery core layer groups 200 can be fixed, preventing the adjacent battery core layer groups 200 from being separated during transportation or assembly, thereby making the adjacent battery core layer groups 200 They can be disassembled and assembled as a whole, which not only has high assembly efficiency, but also ensures the positioning accuracy between adjacent cell layer groups 200 during the entire transportation and assembly process. Therefore, the overall assembly accuracy of the energy storage battery cabinet 1 is higher, and Assembly and electrical connections are more reliable and safer.

In some specific embodiments of the present application, as shown in Figures 6 and 7, the first fasteners 330 are distributed at both ends of the first side plate 221, and the second fasteners 340 are distributed at both ends of the second side plate 222. both ends.

In this way, there are multiple fixed points between the relative positions of the adjacent battery core layer groups 200, and the adjacent battery core layer groups 200 are less likely to be separated, and the adjacent battery core layer groups 200 can be more reliably ensured. The positioning accuracy between the groups 200 is improved, 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 safe.

In some specific embodiments of the present application, as shown in Figures 4 and 6, the energy storage battery cabinet 1 also includes a refrigeration unit 600.

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 a return air outlet. The cabinet 100 is on one side of the cabinet 100 in the height direction. A cooling air duct 120 is configured to communicate with the air outlet, and there is an air duct gap 110 between the cells 210 of two adjacent cell layer groups 200 in the height direction of the cabinet 100 . After the airflow flows into the cooling air duct 120 from the air outlet, it flows through the plurality of battery core layer groups 200 from the other side in the depth direction of the cabinet 100 and both sides in the width direction of the cabinet 100, and passes through the air duct. gap 110 into the return air outlet.

By arranging the refrigeration unit 600, the gas in the energy storage battery cabinet 1 is driven to circulate and exchange heat with the gas in the energy storage battery cabinet 1, thereby reducing the temperature of the gas in the energy storage battery cabinet 1, so that the energy storage battery cabinet 1 The low-temperature gas in the energy storage battery cabinet 1 can cool down the battery cells 210 in the energy storage battery cabinet 1 to prevent heat accumulation in the battery cells 210 of the energy storage battery cabinet 1 from causing thermal runaway, thereby improving the safety of the energy storage battery cabinet 1 .

Moreover, since there is an air 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 depth direction of the cabinet 100. Therefore, the refrigeration unit 600 will not affect the arrangement of the battery core layer groups 200 in the height direction of the cabinet 100, and can make the battery cells The number of layer groups 200 is larger, so the number of battery cells 210 can also be larger, so as to improve the battery cell volume utilization rate of the energy storage battery cabinet 1 .

In some specific embodiments of the present application, as shown in Figures 1-5, 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. The cabinet 100 There is 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 . Both the refrigeration unit 600 and the control unit 700 are installed in the cabinet 100 . Among them, the refrigeration unit 600 is installed on the first cabinet door 140, 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 the plurality of battery core layer groups 200 are exposed by opening the third cabinet door 140. The cabinet door 160 allows access to the cabinet body 100 .

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

In some specific embodiments of the present application, as shown in FIG. 4 , 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 . Arranged widthwise.

In this way, since the cell layer groups 200 are arranged along the height direction of the cabinet 100, in practical applications, the height direction of the cabinet 100 is generally the vertical direction. By making the first cabinet door 140 and the first cabinet door 140 The cabinet 100 is arranged in the width direction, that is, the first cabinet door 140 and the first cabinet door 140 both extend along the height direction of the cabinet 100, making it easy for the user to open and close, and facilitate later maintenance and repair.

In some specific embodiments of the present application, as shown in FIGS. 1 to 5 , one side of the cabinet 100 in the depth direction and both sides of the cabinet 100 in the height direction are respectively provided with wiring compartments 130 connected to each other. The outlet is 170. That is to say, there are at least three wire outlets 170 on the cabinet 100 that are connected to the wiring compartment 130. The wire 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 cluttered wire harnesses. Or there is interference in the wiring harness.

The energy storage system 2 according to the embodiment of the present application 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 application.

The energy storage system 2 according to the embodiment of the present application uses the energy storage battery cabinet 1 according to the above embodiment of the present application to control the dimensional parameters of the cabinet and the dimensional parameters of the battery cells, thereby achieving high energy density and high battery cell volume utilization. The advantage is that the output voltage of the energy storage system 2 can also be taken into consideration.

Other structures and operations of the energy storage battery cabinet 1 and the energy storage system 2 provided with the energy storage battery cabinet 1 according to the embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail here.

In the description of this specification, reference to the description of the terms "specific embodiments," "specific examples," etc., means that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present application or in the example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the application is defined by the claims and their equivalents.

Claims (25)

1. An energy storage battery cabinet (1), which is characterized by including:

   Cabinet (100), 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; as well as

   A plurality of battery cores (210) are provided in the cabinet (100). The length L of the battery core (210), the thickness D of the battery core (210) and The width H of the battery core (210) satisfies: (D+H)/L≤0.2;

   Wherein, the volume V1 of each battery core (210) and the volume V3 of the cabinet (100) satisfy: 0.0009≤V1/V3≤0.002.
2. The energy storage battery cabinet (1) according to claim 1, characterized in that the battery core (210) is configured in a rectangular parallelepiped shape.
3. The energy storage battery cabinet (1) according to claim 1 or 2, characterized in that the sum V2 of the volumes of the plurality of battery cells (210) and the volume V3 of the cabinet (100) satisfy: 0.35≤ V2/V3≤0.5.
4. The energy storage battery cabinet (1) according to any one of claims 1 to 3, characterized in that the length L of the battery core (210), the thickness D of the battery core (210) and the battery The width H of the core (210) satisfies: 400mm≤L≤1100mm, 10mm≤D≤40mm, 60mm≤H≤150mm.
5. The energy storage battery cabinet (1) according to any one of claims 1 to 4, characterized in that the length L of the battery core (210), the thickness D of the battery core (210) and the battery The width H of the core (210) satisfies: 800mm≤L≤970mm, 10mm≤D≤30mm, 80mm≤H≤130mm.
6. The energy storage battery cabinet (1) according to any one of claims 1-5, characterized in that the width W1 of the cabinet (100), the depth D1 of the cabinet (100) and the cabinet The height H1 of the body (100) satisfies: 600mm≤W1≤1200mm, 700mm≤D1≤1250mm, 600≤H1≤1300mm.
7. The energy storage battery cabinet (1) according to any one of claims 1-6, characterized in that the length L of the battery core (210) and the width W1 of the cabinet (100) satisfy: 0.35≤ L/W1<1.
8. The energy storage battery cabinet (1) according to any one of claims 1-7, further comprising:

   A plurality of battery core layer groups (200) are stacked along the height direction of the cabinet (100) and two adjacent battery core layer groups (200) stop each other. , each battery core layer group (200) includes at least one battery core (210) in one direction of the width direction and depth direction of the cabinet (100) and includes a plurality of battery cells (210) in the other direction. The battery core (210).
9. The energy storage battery cabinet (1) according to claim 8, characterized in that the length direction of the battery core (210) is arranged along the width direction of the cabinet (100), and the length direction of the battery core (210) is The thickness direction is arranged along the depth direction of the cabinet (100), and the width direction of the battery core (210) is arranged along the height direction of the cabinet (100).
10. The energy storage battery cabinet (1) according to claim 8 or 9, characterized in that the number of the battery core layer groups (200) is 2 to 10.
11. The energy storage battery cabinet (1) according to any one of claims 8-10, characterized in that there is an air duct between the cells (210) of two adjacent cell layer groups (200). gap(110).
12. The energy storage battery cabinet (1) according to claim 11, characterized in that the size of the air duct gap (110) in the height direction of the cabinet (100) is 5 mm to 20 mm.
13. The energy storage battery cabinet (1) according to any one of claims 8-12, characterized in that the plurality of battery core layer groups (200) are arranged in the height direction of the cabinet (100). The overall width after arrangement is W2, the depth is D2, and the height is H2, among which, 500mm≤W2≤1100mm, 450mm≤D2≤1000mm, 450mm≤H2≤1150mm.
14. The energy storage battery cabinet (1) according to any one of claims 8-13, characterized in that each of the battery core layer groups (200) further includes:

    A constraint frame (220). The cells (210) in each cell layer group (200) are arranged on the constraint frame (220), facing each other in the height direction of the cabinet (100). The restraint frames (220) of two adjacent battery core layer groups (200) stop each other.
15. The energy storage battery cabinet (1) according to claim 14, characterized in that the restraint frame (220) includes:

    first base plate (223); and

    The second bottom plate (224), the second bottom plate (224) and the first bottom plate (223) are spaced apart along one of the width direction and the depth direction of the cabinet (100), and the electrical Both ends of the core (210) in the length direction are respectively supported by the first bottom plate (223) and the second bottom plate (224), between the first bottom plate (223) and the second bottom plate (224) An air duct gap (110) is formed.
16. The energy storage battery cabinet (1) according to claim 15, characterized in that the restraint frame (220) further includes:

    first side panel (221); and

    A second side plate (222). The second side plate (222) and the first side plate (221) are respectively located on both sides of the battery core layer group (200). The second side plate (222) ) and the first side plate (221) are arranged oppositely in the other direction of the width direction and 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), the two ends of the second bottom plate (224) are respectively connected to the other end of the first side plate (221). One end is connected to the other end of the second side plate (222);

    Wherein, for the two battery core layer groups (200) adjacent in the height direction of the cabinet (100), the first bottom plate (223) of one battery core layer group (200) is respectively connected with the other battery layer group (223). The first side plate (221) and the second side plate (222) of one cell layer group (200) are in contact with each other, and the second bottom plate (224) of one cell layer group (200) is respectively connected with another cell layer group. The first side plate (221) and the second side plate (222) of the core layer group (200) stop.
17. The energy storage battery cabinet (1) according to claim 16, characterized in that the first bottom plate (223) and the second bottom plate (224) are both provided with limiting posts (310) and limiting holes (320). ), the first side plate (221) and the second side plate (222) are both provided with the limiting post (310) and the other of the limiting hole (320) ;

    Wherein, for the two battery core layer groups (200) adjacent in the height direction of the cabinet (100), the limiting post (310) of the one battery core layer group (200) matches The limiting hole (320) in the other battery core layer group (200).
18. The energy storage battery cabinet (1) according to claim 17, characterized in that said one of said limiting column (310) and said limiting hole (320) is distributed on said first bottom plate ( Both ends of 223) and both ends of the second bottom plate (224);

    The other one of the limiting post (310) and the limiting hole (320) is distributed at both ends of the first side plate (221) and both sides of the second side plate (222). end.
19. The energy storage battery cabinet (1) according to any one of claims 15 to 17, characterized in that, for the two battery core layers adjacent in the height direction of the cabinet (100) group (200), the first side plate (221) of the other electric core layer group (200) is connected to the first bottom plate (223) of the one electric core layer group (200) through the first fastener (330) ) and the second bottom plate (224) are fastened, and the second side plate (222) of the other battery core layer group (200) is connected to the one battery core layer group (200) through a second fastener (340). The first bottom plate (223) and the second bottom plate (224) are fastened.
20. The energy storage battery cabinet (1) according to claim 19, characterized in that the first fasteners (330) are distributed at both ends of the first side plate (221);

    The second fasteners (340) are distributed at both ends of the second side plate (222).
21. The energy storage battery cabinet (1) according to claim 8, further comprising:

    Refrigeration unit (600), 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 outlet, and the cabinet (100) is configured with a cooling air duct connected to the air outlet on one side of the cabinet (100) in the height direction. (120), there is an air duct gap (110) between the cells of the two adjacent cell layer groups (200) in the height direction of the cabinet (100);

    Wherein, after the airflow flows from the air outlet into the cooling air duct (120), it flows from the other side of the cabinet (100) in the depth direction and from the width direction of the cabinet (100). The two sides flow through the plurality of battery core layer groups (200) and flow into the return air outlet through the air duct gap (110).
22. The energy storage battery cabinet (1) according to any one of claims 8-21, characterized in that the cabinet (100) has a wiring compartment (130) on one side in the depth direction, a first A cabinet door (140) and a second cabinet door (150), 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). The refrigeration unit (600) and the control unit (700) All are installed in the cabinet (100);

    Wherein, the refrigeration unit (600) is installed on the first cabinet door (140), the control unit (700) is exposed by opening the first cabinet door (140), and the second cabinet door (150) It is used to open and close the wiring compartment (130), and the plurality of battery core layer groups (200) can enter and exit the cabinet (100) by opening the third cabinet door (160).
23. The energy storage battery cabinet (1) according to claim 22, characterized in that the first cabinet door (140) and the second cabinet door (150) extend along the width direction of the cabinet body (100). Arrangement: the refrigeration unit (600) and the control unit (700) are arranged along the width direction of the cabinet (100).
24. The energy storage battery cabinet (1) according to claim 22 or 23, characterized in that the side of the cabinet (100) in the depth direction and the side of the cabinet (100) in the depth direction There are outlet openings (170) connected to the wiring compartment (130) on both sides in the height direction.
25. An energy storage system (2), characterized by comprising at least one energy storage battery cabinet (1) according to any one of claims 1-24.