CN220585356U

CN220585356U - Battery cabinet and battery energy storage system

Info

Publication number: CN220585356U
Application number: CN202322197038.XU
Authority: CN
Inventors: 曹忠仁; 许成智; 孙贵清; 王军; 姚远; 刘子瑞
Original assignee: Guangdong New Juneng Energy Technology Co ltd; Xi'an Megmeet Electrical Co ltd
Current assignee: Guangdong New Juneng Energy Technology Co ltd; Xi'an Megmeet Electrical Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-03-12
Anticipated expiration: 2033-08-15

Abstract

The utility model relates to the technical field of energy storage, and discloses a battery cabinet and a battery energy storage system, wherein the battery cabinet comprises a cabinet; the cover plate is rotatably connected to the top of the cabinet, a cavity is defined between the cover plate and the cabinet, and the cover plate is used for opening or closing the cavity; the spray pipe is at least partially positioned in the cavity, the spray pipe is externally connected with a water source, spray holes are formed in the spray, and the spray holes are positioned in the cavity. In this way, the embodiment of the utility model can improve the situation that the spray holes are exposed to the external environment for a long time and a large amount of dust is adhered to the spray Kong Chuyi.

Description

Battery cabinet and battery energy storage system

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery cabinet and a battery energy storage system.

Background

The total capacity of the battery energy storage system may be determined based on the size of the demand and the use, and the total capacity of the battery energy storage system is approximately equal to the product of the number of battery cabinets and the capacity of a single battery cabinet. That is, a plurality of battery cabinets need to be electrically connected to each other to meet the actual use requirements. In the actual use process, the heating value of each battery cabinet is larger, and a spray pipe is additionally arranged to cool the battery cabinet so as to maintain the battery cabinet within a certain temperature range. However, the spray holes of the related art spray pipes are exposed to the external environment for a long period of time, so that the spray Kong Chuyi adheres to a large amount of dust, thereby affecting the normal operation of the spray pipes.

Disclosure of Invention

The utility model aims to provide a battery cabinet and a battery energy storage system, which aim to solve the problem that the normal operation of the battery cabinet is affected by long-term exposure of spray holes of a spray pipe to the external environment.

According to a first aspect of the present utility model, there is provided a battery cabinet comprising a cabinet, a cover plate, and a shower; the cover plate is rotatably connected to the top of the cabinet, a cavity is defined between the cover plate and the cabinet, and the cover plate is used for opening or closing the cavity; the spray pipe is at least partially positioned in the cavity, the spray pipe is externally connected with a water source, a spray hole is formed in the spray, and the spray hole is positioned in the cavity.

Optionally, the cabinet has a step portion, a side surface of the cover plate is hinged to a top surface of the step portion, and when the cover plate is closed, the cover plate and a bottom surface of the step portion jointly define the cavity, and the cover plate is flush with the top surface of the step portion.

Optionally, the battery cabinet further comprises a supporting component, the supporting component is located in the cavity, the supporting component comprises a supporting frame and a supporting rod, the supporting frame is fixedly connected to the cover plate, the supporting frame is provided with a clamping hole, one end of the supporting rod is hinged to the cabinet, and the other end of the supporting rod is used for being matched with the clamping hole when the cover plate is in an open state, and supporting the cover plate rotating to a certain angle.

Optionally, the number of the card hole is a plurality of, and a plurality of card holes are along the extension direction interval setting of support frame.

Optionally, an energy storage converter and an input/output connector electrically connected with the energy storage converter are arranged in the cabinet;

the cabinet is also provided with an opening communicated with the cavity, the opening is positioned on one side of the cover plate, and the input/output connector is arranged at the opening.

Optionally, the cabinet further has a guiding inclined surface, and the guiding inclined surface gradually inclines upwards from the opening towards the inside of the cavity;

the input and output connector is arranged on the guide inclined plane.

Optionally, the cabinet further has a first space and a second space that are independent from each other;

a battery module and/or a high-voltage box are arranged in the first space; the converter is arranged in the second space.

Optionally, the cabinet includes a first cabinet body, a second cabinet body, a first cabinet door and a second cabinet door, where the first cabinet body defines the first space, the second cabinet body is detachably connected to the first cabinet body, and the second cabinet body and the first cabinet body define the second space together;

the first cabinet door is rotatably connected to the first cabinet body and used for opening or closing the first space;

the second cabinet door is rotatably connected to the second cabinet body and used for opening or closing the second space;

the cover plate is rotatably connected to the top end of the second cabinet body.

Optionally, the first cabinet comprises a first top wall, the first top wall is located between the first space and the second space, and the first top wall is provided with a conductive interface;

the high-voltage box is electrically connected with the energy storage converter through the conductive interface.

According to a second aspect of the present utility model, there is provided a battery energy storage system, including a plurality of the battery cabinets described above, and a plurality of the battery cabinets are electrically connected.

The embodiment of the utility model has the beneficial effects that: the liquid inlet hole and the liquid outlet hole of the spray pipe are connected into a circulating pipeline of an external water source, when the temperature inside and outside the battery cabinet is higher, the spray pipe can be conducted, so that cooling medium is sprayed out of the spray hole, the cooling medium gradually fills the cavity along with the cooling medium, overflows out of the cavity along with a gap between the cover plate and the cabinet, flows to the bottom along the periphery of the top of the cabinet, the whole battery cabinet is cooled, and then all electric components inside the battery cabinet are maintained in a certain temperature range.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic view of a battery cabinet according to an embodiment of the present utility model, wherein the schematic view shows a state in which a cover plate is closed;

fig. 2 is a schematic view of a battery cabinet according to an embodiment of the present utility model, in which a cover is opened;

FIG. 3 is a schematic view of the structure of the battery cabinet shown in FIG. 1 with each door opened;

FIG. 4 is an exploded view of the structure of the cabinet shown in FIG. 1;

fig. 5 is a schematic view illustrating a state of the cover plate and the second cabinet body when the cover plate in the battery cabinet shown in fig. 2 is opened.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In the description of the present utility model, it should be noted that, orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and these orientation words do not indicate or imply that the apparatus or elements being referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Next, a specific configuration of the energy storage battery cabinet will be described with reference to the drawings. The embodiments described below and the features of the embodiments may be combined with each other without conflict.

Fig. 1 and fig. 2 are schematic structural views of a battery cabinet according to an embodiment of the present utility model, which respectively show a state when a cover plate is closed and a state when the cover plate is opened, and fig. 3 is a schematic structural view when each cabinet door of the battery cabinet shown in fig. 1 is opened. For convenience of description, the battery cabinet disposed in the middle of the plurality of battery cabinets is illustrated, however, the battery cabinet may be located beside the plurality of battery cabinets, and it should be noted that the battery cabinet disposed in the middle of the plurality of battery cabinets is different from the battery cabinet disposed beside the plurality of battery cabinets in that the liquid outlet holes of the shower pipes 30 disposed in the battery cabinet beside the plurality of battery cabinets are blocked.

First, please refer to the example shown in fig. 1 to 3, the battery cabinet includes: the device comprises a cabinet 10, a cover plate 20, a spray pipe 30, a battery module 40, a high-voltage box 50 and an energy storage converter 60; the cabinet 10 is a mounting and supporting structure of the above components; the cover plate 20 is rotatably connected to the top of the cabinet 10, and a cavity 20a is defined between the cover plate 20 and the cabinet 10, and the cover plate 20 can be opened or closed so that the cavity 20a is communicated or isolated; the spray pipe 30 is at least partially positioned in the cavity 20a, the spray pipe 30 is provided with a liquid inlet hole (not shown), a liquid outlet hole (not shown) and a spray hole 30a, the spray hole 30a is positioned in the cavity 20a, and the liquid inlet hole and the liquid outlet hole are used for externally connecting a water source; the battery module 40, the high-voltage box 50 and the energy storage converter 60 are all arranged in the cabinet 10, the high-voltage box 50 is respectively and electrically connected with the battery module 40, the energy storage converter 60 is electrically connected with the high-voltage box 50, wherein the battery module 40, the high-voltage box 50 and the energy storage converter 60 jointly form an inner circuit of the battery cabinet, and the energy storage converter 60 is used for being electrically connected with mains supply or a load. In specific implementation, the liquid inlet holes and the liquid outlet holes of the spray pipe 30 are connected into the circulating pipeline of an external water source, when the temperature inside and outside the battery cabinet is higher, the spray pipe 30 can be conducted, so that the spray pipe 30a sprays cooling medium, the cooling medium gradually fills the cavity 20a along with the cooling medium, the cooling medium overflows out of the cavity 20a along with a gap between the cover plate 20 and the cabinet 10, and then flows to the bottom along the periphery of the top of the cabinet 10, the whole battery cabinet is cooled, and all electric elements inside the battery cabinet are maintained in a certain temperature range, and as the spray holes 30a of the spray pipe 30 are blocked by the cover plate 20, the spray holes 30a are not exposed in the external environment, and dust adhered to the spray holes 30a is less, so that the situation that a large amount of dust is easy to adhere to the spray holes 30a is improved. As an example, the cooling medium is water. Meanwhile, the medium sprayed from the spraying holes 30a may also be used for fire protection.

The working principle of the battery cabinet is as follows, wherein the high-voltage box 50 not only can monitor the states of battery voltage, current, battery temperature and the like in each battery module 40 in real time, but also can control the connection or disconnection of a main electric loop after a plurality of battery modules 40 are connected in series, and realize pre-charging, charging and discharging and the like according to requirements. The voltage is connected to the energy storage converter 60 under the action of a control circuit such as a pre-charging circuit and a charging and discharging circuit in the high-voltage box 50, and then is converted into three-phase power to the power grid through a bidirectional inverter in the energy storage converter 60 to realize grid connection.

In the description of the present utility model, it should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model.

For the cabinet 10, please refer to the example shown in fig. 3 in conjunction with fig. 4, and fig. 4 is an exploded view of the structure of the cabinet 10 shown in fig. 1. In some embodiments of the present utility model, the cabinet 10 includes a first cabinet 11, a second cabinet 12, a first cabinet door 13, and a second cabinet door 14. The first cabinet body 11 is provided with a first space 11a, the battery module 40 and the high-voltage box 50 are arranged in the first space 11a, the first cabinet door 13 is rotatably connected to the first cabinet body 11, and the first cabinet door 13 can be opened or closed so that the first space 11a is communicated or isolated from the outside; the second cabinet 12 is detachably connected to the first cabinet 11, the second cabinet 12 and the first cabinet 11 together define a second space 12a, the second space 12a and the first space 11a are independent and are not communicated with each other, the energy storage converter 60 is disposed in the second space 12a, and the energy storage converter 60 is detachably and electrically connected with the high-voltage box 50. Of course, it should be understood that the specific structure of the cabinet 10 is not limited thereto, and the requirements of installing and fixing the battery module 40, the high-voltage box 50 and the energy storage converter 60 in the cabinet 10 and protecting the foregoing components are only satisfied. For example, in other embodiments of the present utility model, the cabinet 10 may have only an internal space and be opened or closed by a cabinet door such that an internal space of the cabinet 10 may be opened or closed.

As an example, the first cabinet 11 is generally in the form of a vertical box structure as shown in fig. 4, and includes a base 111, a first left side wall 112, a first rear side wall 113, a first right side wall 114, and a first top wall 115. The base 111 is disposed on a horizontal plane, the first left side wall 112, the first rear side wall 113 and the first right side wall 114 are all vertically disposed on the base 111, and the first left side wall 112, the first rear side wall 113 and the first right side wall 114 are sequentially connected end to form a first peripheral wall, the first top wall 115 is connected to the top of the first peripheral wall, the first top wall 115, the first peripheral wall and the base 111 jointly enclose the aforementioned first space 11a, and the first cabinet door 13 may be fixed on one side of the first left side wall 112 or one side of the first right side wall 114 by adopting but not limited to hinging. The number of the battery modules 40 is odd, the odd battery modules 40 are arranged in two rows in the first space 11a, the high-voltage box 50 is fixedly arranged on the first top wall 115 and adjacent to the remaining battery modules 40, the first top wall 115 is provided with a conductive interface 70, and the high-voltage box 50 is electrically connected with the energy storage converter 60 through the conductive interface 70. As an example, the conductive interface 70 is a waterproof conductive interface 70.

The second cabinet 12 is generally in the frame structure shown in fig. 4, and includes a second left side wall 121, a second rear side wall 122, a second right side wall 123, and a second top wall 124. The second left side wall 121, the second rear side wall 122, the second right side wall 123 and the second top wall 124 are all vertically disposed on the first top wall 115 of the first cabinet 11, the second left side wall 121, the second rear side wall 122 and the second right side wall 123 are sequentially connected end to form a second peripheral wall, the second peripheral wall is detachably connected with the first top wall 115 of the first cabinet 11, the second top wall 124 is connected to the top of the second peripheral wall, the second top wall 124, the second peripheral wall and the first top wall 115 of the first cabinet 11 jointly enclose the second space 12a, the energy storage converter 60 is disposed in the second space 12a, and the second cabinet door 14 can be hinged and fixed on one side of the second left side wall 121 or one side of the second right side wall 123. Preferably, the rotation directions of the second cabinet door 14 and the first cabinet door 13 are the same, for example, the second cabinet door 14 may be hingedly fixed to one side of the second right side wall 123, and the first cabinet door 13 may be hingedly fixed to one side of the first right side wall 114.

As can be seen in connection with fig. 5, the cover 20 is rotatably connected to the second top wall 124 of the second cabinet 12, and the cover 20 and the second top wall 124 of the second cabinet 12 together define a cavity 20a therebetween. As an example, the second top wall 124 of the second cabinet 12 has a step part 1241, the top surface of the step part 1241 is higher than the bottom surface of the step part 1241, a side surface of the cover 20 is hinged to the top surface of the step part 1241, when the cover 20 is closed, the cover 20 and the bottom surface of the step part 1241 jointly define the cavity 20a, and the cover 20 and the top surface of the step part 1241 jointly form a flat end surface of the cabinet 10. Therefore, the volume occupied by the cavity 20a is smaller, and correspondingly, the volume of the second space 12a where the energy storage converter 60 is located is increased, the cover plate 20 and each cabinet door of the cabinet 10 are mutually independent, the functions are not mutually interfered, and only the cover plate 20 needs to be opened when the spray pipe 30 is assembled with an external water source. Of course, it is understood that the specific implementation manner between the cover 20 and the second top wall 124 of the second cabinet 12 is not limited thereto, and the shape and the size of the cavity 20a formed therebetween can be adaptively adjusted according to the actual use requirement.

As further shown in fig. 5, in order to support the cover plate 20, in some embodiments of the present utility model, the battery cabinet further includes a support assembly 80, where the support assembly 80 is located in the cavity 20a, the support assembly 80 includes a support frame 81 and a support rod 82, the support frame 81 is fixedly connected to the cover plate 20, the support frame 81 is provided with a clamping hole, one end of the support rod 82 is hinged to the bottom surface of the step part 1241, and the other end of the support rod 82 is used to cooperate with the clamping hole when the cover plate 20 is in an open state, so as to support the cover plate 20 rotated to a certain angle. Further, the number of the clamping holes can be multiple, and the multiple clamping holes are arranged at intervals along the extending direction of the supporting frame 81, so that the supporting rods 82 are clamped in the clamping holes at different positions to adjust different rotation angles of the cover plate 20, and the use requirements of the battery cabinet installed in different spaces are met.

Referring back to fig. 1, in order to facilitate the electrical connection between the battery cabinet and the external device, in some embodiments of the present utility model, the battery cabinet further includes an input/output connector 90 electrically connected to the energy storage converter 60, the second left side wall 121 and/or the second right side wall 123 of the second cabinet body 12 are provided with an opening (not shown) that communicates with the cavity 20a, the opening is located on one side of the cover 20, and the input/output connector 90 is disposed at the opening. As an example, the input/output connector 90 is a waterproof input/output connector 90, and a part of the second left side wall 121 or a part of the second right side wall 123 gradually slopes upward from the opening into the cavity 20a to form a guide slope 1211, and the input/output connector 90 is disposed on the guide slope 1211. In this way, when a plurality of battery cabinets are combined and wired, the connection harness connecting the plurality of battery cabinets can be at least partially received in the cavity 20a, and in addition, due to the existence of the guiding inclined plane 1211, the cooling medium sprayed out through the spraying holes of the spraying pipe 30 can quickly fall into the bottom of the battery cabinet under the guiding action of the guiding inclined plane 1211, and is not easy to gather at the input/output joint 90, so as to permeate into the second space 12a to affect the energy storage converter 60.

Based on the same technical conception, the embodiment of the utility model also provides a battery energy storage system which comprises a plurality of battery cabinets which are connected in parallel. Because the specific structure, functional principle and technical effect of the battery cabinet are described in detail above, the details are not repeated here. Therefore, any technical content related to the battery cabinet may be referred to the description of the battery cabinet.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A battery cabinet, comprising:

a cabinet;

the cover plate is rotatably connected to the top of the cabinet, a cavity is defined between the cover plate and the cabinet, and the cover plate is used for opening or closing the cavity; and

the spray pipe is at least partially positioned in the cavity, the spray pipe is externally connected with a water source, a spray hole is formed in the spray, and the spray hole is positioned in the cavity.

2. The battery cabinet of claim 1, wherein the cabinet has a stepped portion, wherein a side of the cover plate is hinged to a top surface of the stepped portion, wherein the cover plate and a bottom surface of the stepped portion together define the cavity when the cover plate is closed, and wherein the cover plate is flush with the top surface of the stepped portion.

3. The battery cabinet of claim 1, further comprising a support assembly positioned in the cavity, the support assembly comprising a support frame and a support bar, the support frame being fixedly connected to the cover plate, the support frame being provided with a clamping hole, one end of the support bar being hinged to the cabinet, the other end of the support bar being adapted to cooperate with the clamping hole when the cover plate is in an open state, to support the cover plate rotated to an angle.

4. The battery cabinet of claim 3, wherein the number of the clamping holes is plural, and the plurality of the clamping holes are arranged at intervals along the extending direction of the supporting frame.

5. The battery cabinet of claim 1, wherein an energy storage converter and an input-output connector electrically connected with the energy storage converter are arranged in the cabinet;

6. The battery cabinet of claim 5, further comprising a guide ramp that slopes gradually upward from the opening into the cavity;

the input and output connector is arranged on the guide inclined plane.

7. The battery cabinet of claim 5 or 6, wherein the cabinet further has first and second spaces that are independent of each other;

8. The battery cabinet of claim 7, wherein the cabinet comprises a first cabinet body, a second cabinet body, a first cabinet door and a second cabinet door, the first cabinet body defining the first space, the second cabinet body being detachably connected to the first cabinet body, the second cabinet body and the first cabinet body together defining the second space;

9. The battery cabinet of claim 8, wherein the first cabinet comprises a first top wall positioned between the first space and the second space, the first top wall being provided with a conductive interface;

10. A battery energy storage system comprising a plurality of battery cabinets according to any one of claims 1-9, wherein a plurality of said battery cabinets are electrically connected.