Battery pack pressure relief device for energy storage cabinet

Abstract

This utility model discloses a battery pack pressure relief device for an energy storage cabinet, comprising: an elastic guide tube, a portion of which is deformable, and each battery pack pressure relief port is connected to the elastic guide tube; a flue gas conveying device connected to one end of the elastic guide tube; the elastic guide tube includes: two end tubes, one of which is connected to the flue gas conveying device; and a middle tube disposed between the two end tubes, with a deformable portion on the middle tube; when the battery compartments are arranged horizontally, the middle tube adopts a long tube structure, with the deformable portion away from the pressure relief port of the battery pack; when the battery compartments are arranged vertically, the middle tube adopts a curved structure; this utility model provides directional guidance for flue gas, facilitating timely discharge of flue gas and achieving a rapid pressure relief effect.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, specifically to a battery pack pressure relief device for an energy storage cabinet. Background Technology

[0002] Energy storage cabinets, as important equipment in energy storage, are widely used in power systems, communication base stations, commercial energy storage and other scenarios. Energy storage cabinets usually need to integrate a large number of battery packs. During the charging and discharging process or when a fault occurs, the battery packs may generate a large amount of smoke due to thermal runaway. If the pressure is not released and discharged in a timely and effective manner, it may cause safety accidents such as explosions and fires. However, the pressure relief devices of existing energy storage cabinets mostly use a single pressure relief channel, which has a slow pressure relief response speed and lacks directional flow guidance function, which can easily cause the battery pack to run away and deteriorate further. Utility Model Content

[0003] The purpose of this invention is to provide a battery pack pressure relief device for energy storage cabinets, which can promptly discharge smoke when the battery pack experiences thermal runaway.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a battery pack pressure relief device for an energy storage cabinet, an elastic guide tube, a portion of which is deformable, and each battery pack pressure relief port is connected to the elastic guide tube; a flue gas conveying device, which is connected to one end of the elastic guide tube.

[0005] Furthermore, the flexible guide tube includes: an end tube, having two end tubes, one of which is connected to the flue gas conveying device; and an intermediate tube, disposed between the two end tubes, with a deformable part provided on the intermediate tube.

[0006] Furthermore, when the battery compartment is arranged horizontally, the middle tube adopts a long tube structure, and the deformable part is far away from the pressure relief port of the battery pack.

[0007] Furthermore, when the battery compartments are arranged vertically, the middle tube adopts a curved structure, and the deformable part is located on one side of one of the battery compartments.

[0008] Furthermore, it also includes a testing device, with a testing device installed inside each battery compartment.

[0009] Furthermore, the detection device includes a flue gas sensor.

[0010] Furthermore, it also includes a smoke exhaust device, which is connected to a flue gas conveying device.

[0011] Furthermore, the smoke exhaust system uses smoke exhaust pipes or chimneys.

[0012] Furthermore, it also includes a support base, which is used to support the flue gas conveying device.

[0013] Furthermore, the flue gas conveying device uses an air pump or a fan.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows.

[0015] 1. By setting up a flue gas conveying device, in the event of thermal runaway of the battery pack, the flue gas inside the battery compartment is promptly guided into the flexible guide pipe, and can be discharged to the outside of the energy storage cabinet in a timely manner through the exhaust device; at the same time, the flexible guide pipe can be deformed, and when the flue gas pressure is high, it can cause the internal space of the flexible guide pipe to increase, thereby reducing the flue gas pressure.

[0016] 2. It can accommodate both horizontal and vertical battery compartment layouts to meet different usage needs. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0020] In the diagram: 1. Battery compartment; 2. Flexible guide tube; 21. End tube; 22. Intermediate tube; 221. Deformable part; 3. Flue gas conveying device; 31. Support base; 4. Smoke exhaust device; 5. Detection device. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1 The present invention provides a technical solution: a battery pack pressure relief device for an energy storage cabinet, comprising a battery compartment 1 and an elastic guide pipe 2. The battery compartment 1 is located inside the energy storage cabinet and is used to hold multiple battery packs. The elastic guide pipe 2 includes two end pipes 21, and an intermediate pipe 22 is connected between the two end pipes 21. A portion of the intermediate pipe 22 is elastically deformable. One end pipe 21 is connected to a flue gas conveying device 3, and the flue gas conveying device 3 is also connected to a smoke exhaust device 4.

[0024] At least one battery compartment 1 is provided. When one battery compartment 1 is provided, the pressure relief port of each battery pack inside the battery compartment 1 penetrates the battery compartment 1 and is connected to the intermediate tube 22. The intermediate tube 22 has a deformable part 221. The part of the intermediate tube 22 connected to the pressure relief port of the battery pack adopts a normal tubular structure, such as metal. The deformable part 221 is far away from the pressure relief port of the battery pack. The deformable part 221 is made of an elastic material, such as silicone rubber, so that it can be elastically deformed. The deformable part 221 is sealed to the other parts of the intermediate tube 22. Of course, the entire intermediate tube 22 is sealed to the two end tubes 21.

[0025] When two or more battery compartments 1 are provided, and the battery compartments 1 are arranged laterally, the pressure relief port of each battery pack inside the battery compartment 1 penetrates the battery compartment 1 and is connected to the intermediate tube 22; similarly, the part of the intermediate tube 22 connected to the pressure relief port of the battery pack is made of normal tubing material; the deformable part 221 is away from the pressure relief port of the battery pack, and the deformable part 221 is made of elastic material; compared with the case of only one battery compartment 1, the length of the intermediate tube 22 is increased, and the entire intermediate tube 22 adopts a long tube structure, such as Figure 1 As shown, the deformable part 221 is the upper part of the intermediate tube 22.

[0026] Inside the battery compartment 1, there is also a detection device 5, which is used to detect abnormalities in the battery pack in a timely manner. The detection device 5 includes a smoke sensor, which detects the gas ejected from the pressure relief port when the battery pack is thermally runaway. Of course, the detection device 5 may also include a pressure sensor, which detects the pressure inside the battery compartment 1, further facilitating the timely detection of runaway abnormalities in the battery pack.

[0027] The flue gas conveying device 3 can be a pump or a fan. The input end (inlet end) of the flue gas conveying device 3 is connected to one of the end pipes 21, and the output end (exhaust end) of the flue gas conveying device 3 is connected to the exhaust device 4, which extends out of the energy storage cabinet. The flue gas conveying device 3 is mounted on a support 31, which can be installed on the energy storage cabinet. The entire flexible guide pipe 2 can be fixed to the energy storage cabinet by a bracket or other structure (for example, the parts of the end pipe 21 and the intermediate pipe 22 that are connected to the battery pack pressure relief port are fixed to the energy storage cabinet by a bracket).

[0028] In this embodiment, when the battery pack inside the battery compartment 1 experiences thermal runaway, the detection device 5 promptly detects the abnormality of the battery pack. When the detection device 5 detects the abnormality of the battery pack, the flue gas conveying device 3 starts working, promptly guiding the flue gas in the battery compartment 1 into the flexible guide pipe 2, and promptly discharging it outside the energy storage cabinet through the exhaust device 4. At the same time, since the flexible guide pipe 2 has a deformable part 221, when the flue gas pressure inside the flexible guide pipe 2 is high, causing the flexible guide pipe 2 to deform, the internal space of the flexible guide pipe 2 increases, thereby reducing the pressure of the flue gas and reducing or preventing further runaway and deterioration of the battery pack.

[0029] Example 2

[0030] Please see Figure 1 and Figure 2 This embodiment is based on Embodiment 1. When two or more battery compartments 1 are provided, the horizontal arrangement in Embodiment 1 is replaced by a vertical arrangement. In this case, the middle tube 22 adopts a curved structure, and the deformable part 221 is located on one side of one of the battery compartments 1, i.e. Figure 2 As shown; the intermediate tube 22 has a serpentine curved structure and bypasses each battery compartment 1; specifically, the deformable part 221 is located on the side of the battery compartment 1, as shown. Figure 2 As shown, three battery compartments 1 are provided. The middle tube 22 has two deformable parts 221, which are located on the sides of the two battery compartments 1 above the bottommost battery compartment 1. In this embodiment, the deformable parts 221 can be made of elastic materials such as silicone rubber or metal corrugated pipes with small wall thickness and large axial expansion and contraction. The rest of the middle tube 22 is made of normal pipe material, such as metal.

[0031] The above settings can be adapted to the vertical arrangement of battery compartment 1, making it easy to meet different usage needs.

[0032] Example 3

[0033] Please see Figure 1 and Figure 2 Based on Embodiment 2, the smoke exhaust device 4 adopts a smoke exhaust pipe or a chimney. The smoke exhaust device 4 is installed on the energy storage cabinet, and the smoke exhaust pipe or chimney extends out of the energy storage cabinet.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack pressure relief device for an energy storage cabinet, comprising a battery compartment (1) for housing the battery pack, characterized in that, Also includes: Elastic guide tube (2), a part of which is deformable, and each battery pack pressure relief port is connected to the elastic guide tube (2). Flue gas conveying device (3) is connected to one end of the elastic guide pipe (2).

2. The battery pack pressure relief device for an energy storage cabinet according to claim 1, characterized in that, The flexible guide tube (2) includes: End pipe (21), there are two end pipes (21), one of which is connected to the flue gas conveying device (3). The intermediate tube (22) is located between the two end tubes (21) and a deformable part (221) is provided on the intermediate tube (22).

3. A battery pack pressure relief device for an energy storage cabinet according to claim 2, characterized in that, When the battery compartment (1) is arranged horizontally, the middle tube (22) adopts a long tube structure, and the deformable part (221) is far away from the pressure relief port of the battery pack.

4. A battery pack pressure relief device for an energy storage cabinet according to claim 2, characterized in that, When the battery compartment (1) is arranged vertically, the middle tube (22) adopts a curved structure, and the deformable part (221) is located on one side of one of the battery compartments (1).

5. A battery pack pressure relief device for an energy storage cabinet according to claim 1, characterized in that, It also includes a detection device (5), and each battery compartment (1) is equipped with a detection device (5).

6. A battery pack pressure relief device for an energy storage cabinet according to claim 5, characterized in that, The detection device (5) includes a flue gas sensor.

7. A battery pack pressure relief device for an energy storage cabinet according to claim 1, characterized in that, It also includes a smoke exhaust device (4), which is connected to a flue gas conveying device (3).

8. A battery pack pressure relief device for an energy storage cabinet according to claim 7, characterized in that, The smoke exhaust device (4) adopts a smoke exhaust pipe or a chimney.

9. A battery pack pressure relief device for an energy storage cabinet according to claim 1, characterized in that, It also includes a support base (31) for supporting the flue gas conveying device (3).

10. A battery pack pressure relief device for an energy storage cabinet according to claim 1, characterized in that, The flue gas conveying device (3) uses an air pump or a fan.

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