CN220526971U

CN220526971U - Energy storage system

Info

Publication number: CN220526971U
Application number: CN202321265289.0U
Authority: CN
Inventors: 刘金芝; 李东方; 刘俊杰
Original assignee: Shenzhen Clou Electronics Co Ltd
Current assignee: Shenzhen Clou Electronics Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2024-02-23
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses an energy storage system, comprising: the box body is provided with a storage cavity; the battery unit is arranged in the storage cavity; the battery management unit is arranged in the storage cavity, is arranged at intervals along the length direction of the box body, and is positioned at one side of the battery unit along the length direction of the box body; and the projection of the battery unit and the projection of the battery management unit are not overlapped along the width direction of the box body. The energy storage system provided by the utility model can have higher energy density.

Description

Energy storage system

Technical Field

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

Background

In the related art, the energy storage system has the advantages of low pollution, long service life and the like. The energy storage system may be a lithium battery energy storage system. The energy storage system generally comprises a lithium battery, a confluence cabinet, a control cabinet, a power distribution cabinet and the like, and the existing energy storage system is used for intensively placing the cabinets in an energy storage container.

However, after the lithium battery, the convergence cabinet, the control cabinet and the power distribution cabinet are placed in the energy storage container together, the arrangement mode of the lithium battery, the convergence cabinet, the control cabinet and the power distribution cabinet can lead to lower energy density of the energy storage system.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an energy storage system which can have higher energy density.

An energy storage system according to an embodiment of the present utility model includes:

the box body is provided with a storage cavity;

the battery unit is arranged in the storage cavity;

the battery management unit is arranged in the storage cavity, is arranged at intervals along the length direction of the box body, and is positioned at one side of the battery unit along the length direction of the box body; and the projection of the battery unit and the projection of the battery management unit are not overlapped along the width direction of the box body.

The energy storage system provided by the embodiment of the utility model has at least the following beneficial effects: the battery unit and the battery management unit are both arranged in the storage cavity of the box body, wherein the battery management unit and the battery unit are arranged at intervals along the length direction of the box body, and the battery management unit is positioned at one side of the battery unit along the length direction of the box body; along the width direction of the case, the projection of the battery cell and the projection of the battery management unit do not overlap. Therefore, after the battery unit and the battery management unit are arranged at intervals in the length direction of the box body and along the width direction of the box body, the projection of the battery unit and the projection of the battery management unit are not overlapped, and the energy storage system can have higher energy density.

According to some embodiments of the utility model, the battery management unit includes a power distribution control unit and a bus unit, which are stacked in a vertical direction.

According to some embodiments of the utility model, the power distribution control unit has a first housing extending in a width direction of the tank; the distance between two ends of the first shell is L1 along the width direction of the box body; the distance between the two ends of the first shell is L2 along the length direction of the box body; wherein, satisfy: L1/L2 is more than or equal to 6 and less than or equal to 8.

According to some embodiments of the utility model, the busbar unit has a second housing extending in a width direction of the tank; the distance between two ends of the second shell is L3 along the width direction of the box body; the distance between the two ends of the second shell is L4 along the length direction of the box body; wherein, satisfy: L3/L4 is more than or equal to 4 and less than or equal to 6.

According to some embodiments of the utility model, the tank is further provided with an opening, the opening is communicated with the storage cavity, and the opening is located at one side of the tank in the length direction.

According to some embodiments of the utility model, the opening and the battery management unit are disposed on a same side of the case in a length direction.

According to some embodiments of the utility model, the energy storage system further comprises a door connected to the tank for opening or closing the opening.

The energy storage system according to some embodiments of the present utility model further comprises a fire protection device disposed within the storage cavity.

According to the energy storage system of some embodiments of the present utility model, the fire protection device is disposed at one side of the battery unit in the width direction of the case.

According to some embodiments of the utility model, the length of the tank ranges from 6m to 7m, the width of the tank ranges from 2m to 2.5m, and the height of the tank ranges from 2m to 2.5m.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a top view of a prior art energy storage system;

FIG. 2 is a top view of an energy storage system according to some embodiments of the utility model;

FIG. 3 is a schematic diagram of a battery management unit according to some embodiments of the utility model;

fig. 4 is a schematic diagram of an energy storage system according to some embodiments of the utility model.

Reference numerals:

the energy storage system 10, the case 100, the storage chamber 110, the battery unit 200, the battery management unit 300, the power distribution control unit 310, the first case 320, the bus unit 330, the second case 340, and the door 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, fig. 1 is a top view of an energy storage system 10 according to the prior art. In fig. 1, a battery unit 200 and a battery management unit 300 are placed in a case 100, and the case 100 may be a container having functions of corrosion resistance, dust resistance, and rain resistance. Since the battery management unit 300 requires space for placement, in the related art, a portion of the battery units 200 is reduced so as to have sufficient space for placement of the battery management unit 300. I.e., one less cluster of cells is placed in the case 100. But this approach results in a lower energy density of the energy storage system 10. For this purpose. The present application proposes an energy storage system 10.

Referring to fig. 2, in some embodiments, the energy storage system 10 includes: the case 100, the battery cell 200, and the battery management unit 300. The case 100 has a storage chamber 110. The case 100 may be a container, made of a metal material. The shape of the container may be a rectangular parallelepiped shape. The battery cell 200 is disposed in the storage chamber 110. The battery unit 200 may be composed of a cluster of batteries, and a cluster of batteries may be placed on the rack. The battery management unit 300 is disposed in the storage chamber 110, and the battery management unit 300 and the battery unit 200 are disposed at intervals along the length direction of the case 100, and the battery management unit 300 is located at one side of the battery unit 200 along the length direction of the case 100. The projection of the battery cell 200 and the projection of the battery management unit 300 do not overlap in the width direction of the case 100. Specifically, the battery cell 200 and the battery management unit 300 are both disposed in the storage cavity 110 of the case 100, wherein the battery management unit 300 and the battery cell 200 are disposed at intervals along the length direction of the case 100, and the battery management unit 300 is located at one side of the battery cell 200 along the length direction of the case 100; the projection of the battery cell 200 and the projection of the battery management unit 300 do not overlap in the width direction of the case 100. In this way, by disposing the battery cells 200 and the battery management unit 300 at intervals in the longitudinal direction of the case 100 and by not overlapping the projection of the battery cells 200 and the projection of the battery management unit 300 in the width direction of the case 100, the energy storage system 10 can have a high energy density.

The specific meaning of the projection of the battery cell 200 and the projection of the battery management unit 300 not overlapping in the width direction of the case 100 is further explained below. Referring to fig. 1, the width of the battery management unit 300 is larger, the length is smaller, or the width and length of the battery management unit 300 are identical in the prior art. Therefore, in the width direction of the case 100, the projection of the battery cell 200 and the projection of the battery management unit 300 of the related art partially overlap. And the overlap is the portion of the battery cell 200 that is discarded, resulting in a lower energy density of the energy storage system 10. Referring to fig. 2, in the width direction of the case 100, it can be seen that the projection of the battery cell 200 and the projection of the battery management unit 300 do not overlap. That is, there is a space between the projection of the battery cell 200 and the projection of the battery management unit 300.

The battery management unit 300 is described below. Referring to fig. 2 and 3, in some embodiments, the battery management unit 300 includes a power distribution control unit 310 and a bus unit 330, and the power distribution control unit 310 and the bus unit 330 are stacked in a vertical direction. The power distribution control unit 310 comprises an environment monitoring management unit, a cell stack management unit, a standby power supply and the like, and the power distribution control unit 310 has the functions of controlling the on-off of a circuit and preventing overload and short circuit of the circuit. The bus unit 330 includes a transformer, a molded case circuit breaker, a fuse, a copper bar, and the like. The confluence unit 330 has a function of collecting and distributing ac power of each branch. The power distribution control unit 310 may be placed above the bus unit 330, and compared with a mode in which the power distribution control unit 310 and the bus unit 330 are stacked and arranged at a parallel interval, the mode in which the power distribution control unit 310 and the bus unit 330 are stacked and arranged can reduce the space occupied by the battery management unit 300 in the box 100, so that more space is reserved for placing the battery unit 200. As such, the energy storage system 10 has a relatively high energy density. In addition, the power distribution control unit 310 may be placed under the bus unit 330.

Among them, the power distribution control unit 310 has many devices, and thus it is necessary to place a plurality of devices in the first housing 320. While the first housing 320 is made small, the occupation of the space of the storage chamber 110 can be reduced. Specifically, referring to fig. 3, in some embodiments, the power distribution control unit 310 has a first housing 320, and the first housing 320 extends along a width direction of the box 100. I.e., the first housing 320 may be rectangular parallelepiped in shape. The distance between both ends of the first housing 320 in the width direction of the case 100 is L1, that is, the length of the first housing 320 is L1; the distance between the two ends of the first housing 320 is L2 along the length direction of the case 100, that is, the width of the first housing 320 is L2; wherein, satisfy: L1/L2 is more than or equal to 6 and less than or equal to 8. Specifically, when the ratio of the length and the width of the first housing 320 is less than 6, the size of the width of the first housing 320 and the size of the length of the first housing 320 are too small, which may cause the first housing 320 to occupy an excessive volume of the case 100 in the storage chamber 110. When the ratio of the length to the width of the first housing 320 is greater than 8, at this time, the size of the width of the first housing 320 and the size of the length of the first housing 320 differ too much, resulting in a smaller width of the first housing 320, which may make the device inconvenient to install in the first housing 320.

Among them, the bus unit 330 has many devices, and thus it is necessary to place the plurality of devices in the second case 340. While the second housing 340 is made smaller, the occupation of the space of the storage chamber 110 can be reduced. Specifically, referring to fig. 3, in some embodiments, the bus unit 330 has a second housing 340, and the second housing 340 extends along the width direction of the case 100, i.e., the second housing 340 may be rectangular parallelepiped. The distance between both ends of the second housing 340 in the width direction of the case 100 is L3, that is, the length of the second housing 340 is L3; the distance between both ends of the second housing 340 is L4 along the length direction of the case 100, that is, the width of the second housing 340 is L4; wherein, satisfy: L3/L4 is more than or equal to 4 and less than or equal to 6. Specifically, when the ratio of the length and the width of the second housing 340 is less than 4, the size of the width of the second housing 340 and the size of the length of the second housing 340 are too small, which may cause the second housing 340 to occupy an excessive volume of the case 100 in the storage chamber 110. When the ratio of the length and the width of the second housing 340 is greater than 6, at this time, the size of the width of the second housing 340 and the size of the length of the second housing 340 differ too much, resulting in a smaller width of the second housing 340, which may make the device inconvenient to install in the second housing 340.

When necessary, since the first housing 320 of the power distribution control unit 310 has more devices than the second housing 340 of the bus unit 330, the first housing 320 may have a length greater than that of the second housing 340.

In some embodiments, the case 100 is further provided with an opening, which communicates with the storage chamber 110, and is located at one side of the case 100 in the length direction. In particular, the provision of the openings facilitates the placement of the battery cell 200 and the battery management unit 300 in the storage cavity 110 by a worker. After the opening is opened, a worker may put the battery cell 200 and the battery management unit 300 into the storage chamber 110 in sequence, and after the opening is closed, dust and rainwater may be prevented from affecting the battery cell 200 and the battery management unit 300.

In some embodiments, the opening and the battery management unit 300 are disposed at the same side of the case 100 in the length direction. Specifically, for example, an opening may be provided at the left side of the case 100, so that a worker may first put the battery cell 200 into the storage chamber 110, and finally put the battery management unit 300 again, and close the opening. Wherein, the battery management unit 300 is close to the opening, which is convenient for a worker to open the opening to inspect and replace the battery management unit 300. In addition, the opening and the battery management unit 300 may be provided at different sides of the case 100 in the length direction.

Referring to fig. 4, in some embodiments, the energy storage system 10 further includes a door 400, the door 400 being connected to the case 100, the door 400 being used to open or close the opening. The door 400 may be rotatably connected to the case 100 by a pin with the case 100. The door 400 may be made of a metal material so as to have a long service life.

In some embodiments, the energy storage system 10 further includes a fire protection device disposed within the storage cavity 110. The fire-fighting device may be a fire extinguisher or sand. Wherein, after the fire-fighting equipment is placed in the storage chamber 110, when a fire occurs in the storage chamber 110, a worker can use the consumption equipment to extinguish the fire for the first time.

In order to make reasonable use of the space of the storage chamber 110, more battery cells 200 may be placed in the case 100, and thus, the energy storage system 10 may have a higher energy density. Accordingly, in some embodiments, the fire-fighting device is provided at one side of the battery unit 200 in the width direction of the case 100. Specifically, the fire-fighting equipment provided at one side of the battery unit 200 in the width direction of the case 100 can reasonably utilize space, and can be made closer to the battery unit 200. In addition, the fire fighting equipment may be provided at one side of the battery unit 200 in the length direction of the case 100.

The dimensions of the case 100 are described below. Wherein the case 100 may be rectangular parallelepiped in shape. Referring to fig. 2, in some embodiments, the length of the case 100 ranges from 6m to 7m, the width of the case 100 ranges from 2m to 2.5m, and the height of the case 100 ranges from 2m to 2.5m. Specifically, the length of the case 100 may be one of 6m, 6.5m, and 7m, the width of the case 100 may be one of 2m, 2.2m, and 2.5m, and the height of the case 100 may be one of 2m, 2.2m, 2.3m, and 2.5m. When the length of the box 100 is less than 6m, the storage cavity 110 is not large enough, so that the energy density of the energy storage system 10 is low, and when the length of the box 100 is greater than 7m, the box 100 is inconvenient to carry by a worker, or the carrying difficulty is too large, and the cost is high. When the width of the box 100 is less than 2m, the storage cavity 110 is not large enough, so that the energy density of the energy storage system 10 is low, and when the width of the box 100 is greater than 2.5m, the box 100 is inconvenient to carry by a worker, or the carrying difficulty is too large, and the cost is high. When the height of the box 100 is less than 2m, the volume of the storage cavity 110 is not large enough, so that the energy density of the energy storage system 10 is low, and when the height of the box 100 is greater than 2.5m, the box 100 is inconvenient to carry by a worker, or the carrying difficulty is too large, and the cost is high.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims

1. An energy storage system, comprising:

the box body is provided with a storage cavity;

the battery unit is arranged in the storage cavity;

the battery management unit is arranged in the storage cavity, is arranged at intervals along the length direction of the box body, and is positioned at one side of the battery unit along the length direction of the box body; the projection of the battery unit and the projection of the battery management unit do not coincide along the width direction of the box body;

the battery management unit comprises a power distribution control unit and a confluence unit, and the power distribution control unit and the confluence unit are stacked along the vertical direction;

the power distribution control unit has a first housing extending in a width direction of the case; the distance between two ends of the first shell is L1 along the width direction of the box body; the distance between the two ends of the first shell is L2 along the length direction of the box body; wherein, satisfy: L1/L2 is more than or equal to 6 and less than or equal to 8.

2. The energy storage system of claim 1, wherein the busbar unit has a second housing extending in a width direction of the tank; the distance between two ends of the second shell is L3 along the width direction of the box body; the distance between the two ends of the second shell is L4 along the length direction of the box body; wherein, satisfy: L3/L4 is more than or equal to 4 and less than or equal to 6.

3. The energy storage system of claim 1, wherein the housing is further provided with an opening, the opening communicating with the storage chamber, the opening being located on one side of the housing in a length direction.

4. The energy storage system of claim 3, wherein the opening and the battery management unit are disposed on a same side of the case in a length direction.

5. The energy storage system of claim 3, further comprising a door connected to the tank, the door for opening or closing the opening.

6. The energy storage system of claim 1, further comprising a fire protection device disposed within the storage cavity.

7. The energy storage system of claim 6, wherein the fire protection device is disposed on one side of the battery unit in a width direction of the tank.

8. The energy storage system of claim 1, wherein the length of the tank ranges from 6m to 7m, the width of the tank ranges from 2m to 2.5m, and the height of the tank ranges from 2m to 2.5m.