CN219419218U

CN219419218U - Energy storage device

Info

Publication number: CN219419218U
Application number: CN202320855597.2U
Authority: CN
Inventors: 石腾腾; 李炜
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-07-25
Anticipated expiration: 2033-04-17

Abstract

The utility model discloses an energy storage device, comprising: a case; the battery bin is arranged in the box body and comprises a plurality of unit bins; and fire-proof walls are arranged in the box body, a plurality of fire-proof walls are arranged at intervals to divide the battery compartment into a plurality of unit compartments, and each fire-proof wall comprises fire-proof plates and columns which are alternately arranged along the extending direction of the fire-proof wall. The fire wall comprises the fire-proof plates and the columns which are alternately arranged along the extending direction of the fire wall, so that the fire-proof plates delay the heat spreading between the adjacent unit cabins, the contact area between the columns and the unit cabins is greatly reduced due to the existence of the fire-proof plates, and the heat spreading caused by the columns is also greatly reduced, thereby reducing the heat spreading risk between the unit cabins in the energy storage device. In addition, because the structure that PLASTIC LAMINATED and cylinder set up in turn along the extension direction of preventing hot wall for prevent hot wall's thickness reduces greatly, thereby reduced the space occupancy who prevents hot wall, and then improved the inside space utilization of energy memory.

Description

Energy storage device

Technical Field

The utility model relates to the technical field of batteries, in particular to an energy storage device.

Background

With the development of technology, battery energy storage systems are widely used. The energy storage system is a key part for solving the problems of large-scale access, wind abandoning, light abandoning and the like of renewable energy sources, is an essential component part for development of distributed energy sources, smart grids and energy Internet, and is an important supporting part for solving peak clipping and valley filling of conventional power and improving the power generation and transmission efficiency, safety and economy of the conventional energy sources.

The energy storage container takes the container as a carrier and provides uninterrupted power supply for various devices. The energy storage container comprises an electric bin and a battery bin which are adjacently arranged, wherein the battery bin comprises a plurality of unit bins which are adjacently arranged, and the electric bin and the battery bin are separated through a fire wall. In the prior art, the firewall comprises two layers of steel plates and A-level fireproof flame-retardant rock wool filled between the two layers of steel plates, on one hand, the firewall with the structure is thicker, and the space utilization rate inside the energy storage container is greatly reduced; on the other hand, the contact area between the steel plate and the unit warehouse is large, when the thermal runaway of one unit warehouse is caused, heat is easily transferred to the adjacent unit warehouse and/or the adjacent electric warehouse through the steel plate-container frame body, the box door and the like, and the risk of heat spreading is high.

Disclosure of Invention

In order to solve the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an energy storage device for reducing the space occupation rate and the heat spreading risk of a firewall.

The technical scheme provided by the utility model is as follows:

an energy storage device, comprising:

a case;

the battery bin is arranged in the box body and comprises a plurality of unit bins;

and fire-proof walls are arranged in the box body, a plurality of fire-proof walls are arranged at intervals to divide the battery compartment into a plurality of unit compartments, and each fire-proof wall comprises fire-proof plates and columns which are alternately arranged along the extending direction of the fire-proof wall.

Compared with the prior art that the steel plate of the firewall is in large-area contact with the unit bins to easily cause heat spreading, the firewall comprises the fireproof plates and the columns which are alternately arranged along the extending direction of the firewall, so that the fireproof plates delay the heat spreading between adjacent unit bins, the contact area between the columns and the unit bins is greatly reduced due to the existence of the fireproof plates, and the heat spreading caused by the columns is also greatly reduced, so that the heat spreading risk among the unit bins in the energy storage device is reduced. In addition, because the structure that PLASTIC LAMINATED and cylinder set up in turn along the extension direction of preventing hot wall for prevent hot wall's thickness reduces greatly, thereby reduced the space occupancy who prevents hot wall, and then improved the inside space utilization of energy memory.

Drawings

FIG. 1 is a schematic diagram of an energy storage device according to an embodiment;

FIG. 2 is a frame diagram of an energy storage device according to an embodiment;

wherein the reference numerals have the following meanings:

1. a case; 11. a top surface; 12. a bottom surface; 13. a left side surface; 14. a right side surface; 15. a front side; 16. a rear side; 2. a battery compartment; 21. a unit bin; 22. a battery holder; 3. a firewall; 31. a fire protection plate; 32. a column.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The utility model provides an energy storage device, as shown in fig. 1 and 2, which comprises a box body 1, a battery compartment 2 and fire-proof walls 3, wherein the battery compartment 2 is arranged in the box body 1, the battery compartment 2 comprises a plurality of unit compartments 21, the fire-proof walls 3 are arranged at intervals to divide the battery compartment 2 into the plurality of unit compartments 21, and each fire-proof wall 3 comprises a fire-proof plate 31 and a column body 32 which are alternately arranged along the extending direction of the fire-proof wall 3. Compared with the prior art that the steel plate of the firewall 3 is in large-area contact with the unit bins 21 to easily cause heat spreading, the firewall 3 of the utility model comprises the fireproof plates 31 and the columns 32 which are alternately arranged along the extending direction of the firewall 3, so that the fireproof plates 31 delay the heat spreading between the adjacent unit bins 21, the contact area between the columns 32 and the unit bins 21 is greatly reduced due to the existence of the fireproof plates 31, and the heat spreading caused by the columns 32 is also greatly reduced, thereby reducing the heat spreading risk between the unit bins 21 in the energy storage device and avoiding the heat spreading to the adjacent unit bins 21 along the columns 32 and the box 1 when the heat of one unit bin 21 is out of control. In addition, due to the structure that the fireproof plates 31 and the columns 32 are alternately arranged along the extending direction of the fire wall 3, the thickness of the fire wall 3 is greatly reduced, the space occupancy rate of the fire wall 3 is reduced, and the space utilization rate of the inside of the energy storage device is improved.

Specifically, the case 1 of the energy storage device of the present embodiment has a rectangular parallelepiped structure, along the extending direction of the column 32, a plurality of fire-proof walls 3 are disposed perpendicular to opposite sides of the case 1, and the fire-proof plates 31 and the column 32 are disposed perpendicular to the opposite sides alternately, thereby dividing the battery compartment 2 into a plurality of unit compartments 21. In order to further reduce the risk of heat spreading between the unit bins 21, the sum of the projected areas of the columns 32 perpendicular to the opposite sides of each firewall 3 is smaller than the sum of the projected areas of the fireproof plates 31 perpendicular to the opposite sides of each firewall 3, so that the space occupation rate of the columns 32 is reduced as much as possible, namely, the contact area between the columns 32 and the unit bins 21 is reduced, and the risk of heat spreading between the unit bins 21 is further reduced.

More specifically, referring to fig. 1 and 2, the box 1 of the rectangular parallelepiped structure has six surfaces, namely, a top surface 11, a bottom surface 12, a left side surface 13, a right side surface 14, a front side surface 15 and a rear side surface 16, and in this embodiment, the top surface is the top surface 11, the bottom surface is the bottom surface 12, the left side surface is the left side surface 13, the right side surface is the right side surface 14, the front side surface is the front side surface 15, the rear side surface is the rear side surface 16, the top surface 11 and the bottom surface 12 are disposed opposite to each other, the left side surface 13 and the right side surface 14 are disposed opposite to each other, and the front side surface 15 and the rear side surface 16 are disposed opposite to each other. The fire-proof wall 3 is disposed perpendicular to the opposite top and bottom surfaces 11 and 12, and the fire-proof wall 3 is disposed parallel to the opposite left and right side surfaces 13 and 14, the fire-proof plate 31 and the column 32 are disposed perpendicular to the top and bottom surfaces 11 and 12, and the fire-proof plate 31 and the column 32 are alternately disposed parallel to the left and right side surfaces 13 and 14, thereby dividing the battery compartment 2 into a plurality of unit compartments 21 in a direction perpendicular to the left and right side surfaces 13 and 14, and the left and right sides of each unit compartment 21 are fire-proof walls 3.

On the basis, a plurality of battery frames 22 are arranged in each unit bin 21 at intervals, the battery frames 22 are arranged at intervals along the direction perpendicular to the top surface 11 and the bottom surface 12, and the left side and the right side of each battery frame 22 are fixedly arranged on the fire wall 3 on the left side and the right side of the unit bin 21. In order to ensure the firmness of the installation of the battery frame 22, the left and right sides of the battery frame 22 are specifically installed on the columns 32 of the firewall 3, and the columns 32 generally adopt a rigid structure. And, since the battery frame 22 is used for placing the battery pack, in order to ensure stable placement of the battery pack, the battery frames 22 are arranged in parallel at intervals in a direction perpendicular to the top surface 11 and the bottom surface 12, and perpendicular to the fire walls 3 on the left and right sides.

As described above, it is desirable to reduce the projected area of the column 32 perpendicular to the opposite sides as much as possible to reduce the contact area of the column 32 with the unit cells 21 to reduce the heat spreading, but since the battery rack 22 is fixedly mounted on the column 32, once the projected area of the column 32 perpendicular to the opposite sides is too small, the structural strength of the column 32 is not enough to fix the battery rack 22 even, and therefore, it is desirable to rationally design the projected area of the column 32 perpendicular to the opposite sides. In the present utility model, the column 32 in each firewall 3 is verticalThe sum of the projected areas directed to the opposite sides is A ₁ The sum A of projected areas of the fire-proof plate 31 perpendicular to the opposite faces in each fire-proof wall 3 ₂ ，A ₁ And A ₂ Satisfy A of 0.1667 ∈7 ₁ /A ₂ Less than or equal to 0.5, thereby reducing heat spreading and ensuring that the column 32 is strong and space enough to hold the battery rack 22, thereby well balancing the relationship between heat management and strength of the firewall 3. At A ₁ /A ₂ When the ratio of the column 32 in the firewall 3 is larger than 0.5, the column 32 increases the heat spreading capability between the unit cells 21, and when a certain unit cell 21 is out of control, heat is likely to spread to an adjacent unit cell 21 along the column 32 and the box 1. At A ₁ /A ₂ When the ratio of the fireproof plate 31 in the firewall 3 is smaller than 0.1667, the overall strength of the protection wall 3 is greatly reduced, the strength of the column 32 is reduced, the mounting surface of the column 32 is greatly reduced, and enough space is not available and is not enough to support the fixed battery frame 22. Exemplary, A ₁ /A ₂ The values of (c) may be 0.1667, 0.17, 0.2, 0.3, 0.4, 0.45, 0.49, 0.5. In the present utility model, the dimensions of each column 32 are the same as each fireproof plate 31 by default.

In addition, the column body 32 and the box body 1 are of an integrated structure, specifically, the column body 32 and the integral outer frame of the box body 1 are of an integrated structure, and when the firewall 3 is designed, only the fireproof plate 31 is required to be installed between the column bodies 32, so that the process is simple and the operation is convenient. Specifically, the column 32 and the fireproof plate 31 in this embodiment are fixedly connected by bolts, or the column 32 and the fireproof plate 31 are adhesively connected.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. An energy storage device, comprising:

a case (1);

the battery bin (2) is arranged in the box body (1), and the battery bin (2) comprises a plurality of unit bins (21);

firewall (3) are arranged in box (1), firewall (3) interval is equipped with a plurality of, in order with battery compartment (2) separate into a plurality of unit storehouse (21), every firewall (3) include follow firewall (3) extending direction is PLASTIC LAMINATED (31) and cylinder (32) that set up in turn.

2. An energy storage device according to claim 1, wherein: the box body (1) is of a cuboid structure, a plurality of fire-proof walls (3) are perpendicular to opposite two sides of the box body (1) along the extending direction of the column body (32), and the fire-proof plates (31) and the column body (32) are perpendicular to the opposite two sides in an alternating mode.

3. An energy storage device according to claim 1, wherein: the column body (32) and the box body (1) are of an integral structure.

4. An energy storage device according to claim 2, wherein: the sum of the projected areas of the columns (32) perpendicular to the opposite faces in each firewall (3) is smaller than the sum of the projected areas of the fireproof plates (31) perpendicular to the opposite faces.

5. An energy storage device as defined in claim 4, wherein: the sum of the projected areas of the columns (32) perpendicular to the opposite faces in each firewall (3) is A ₁ The sum A of the projected areas of the fireproof plate (31) perpendicular to the opposite surfaces in each fireproof wall (3) ₂ ，A ₁ And A ₂ Satisfy A of 0.1667 ∈7 ₁ /A ₂ ≤0.5。

6. An energy storage device according to claim 2, wherein: the box (1) comprises a top surface (11), a bottom surface (12), a left side surface (13), a right side surface (14), a front side surface (15) and a rear side surface (16), wherein the top surface (11) and the bottom surface (12) are oppositely arranged, the left side surface (13) and the right side surface (14) are oppositely arranged, the front side surface (15) and the rear side surface (16) are oppositely arranged, the firewall (3) is perpendicular to the top surface (11) and the bottom surface (12) and is parallel to the left side surface (13) and the right side surface (14).

7. An energy storage device according to claim 6, wherein: the fireproof plate (31) and the column body (32) are arranged perpendicular to the top surface (11) and the bottom surface (12), and the fireproof plate (31) and the column body (32) are alternately arranged parallel to the left side surface (13) and the right side surface (14).

8. An energy storage device according to claim 1, wherein: a plurality of battery frames (22) are arranged in each unit bin (21) at intervals, and two opposite sides of each battery frame (22) are fixedly arranged on the corresponding firewall (3).

9. An energy storage device according to claim 8, wherein: a plurality of battery frames (22) in each unit bin (21) are arranged in parallel and perpendicular to the firewall (3).

10. An energy storage device according to claim 8, wherein: the opposite sides of the battery frame (22) are fixedly mounted on the corresponding columns (32).