Lithium battery energy storage container

Abstract

The utility model relates to battery exhaust system technical field, propose a kind of lithium battery energy storage container, including box, multiple battery packs and air passage;The air passage includes riser, multiple connecting pipes, exhaust pipe and baffle, one end of the connecting pipe is fixedly arranged on the riser, one end of the connecting pipe away from the riser is fixedly arranged on the battery pack;One end of the exhaust pipe is fixedly arranged on the riser, one end of the exhaust pipe away from the riser is located below its one end close to the riser;The baffle is fixedly arranged in the bottom side in the exhaust pipe.The utility model can discharge high-temperature eruption of battery pack in time when thermal runaway occurs by setting riser, connecting pipe and exhaust pipe, by letting the exhaust pipe away from the riser one end downwardly inclined, and setting baffle in the bottom side in the exhaust pipe, can avoid external water body to flow into riser and connecting pipe, to improve the use safety of energy storage container.

Description

Technical Field

[0001] This utility model relates to the field of battery exhaust system technology, and in particular to a lithium battery energy storage container. Background Technology

[0002] A lithium-ion battery energy storage container is an integrated energy storage device that integrates multiple lithium-ion battery modules, a battery management system, a thermal management system, and other components within a standard container to store and release electrical energy. As a highly efficient and stable energy storage solution, it has been widely used in power systems, renewable energy grid connection, and industrial and commercial energy storage.

[0003] The exhaust system is a safety protection component of lithium battery energy storage containers. When lithium batteries experience thermal runaway, a large amount of high-temperature and high-pressure gas is released into the energy storage container in a timely manner through the exhaust system, thereby ensuring the safety of the device, extending the battery's lifespan, and maintaining the stability of the system performance.

[0004] For example, the invention patent with publication number CN116470227A discloses a battery cluster, energy storage container and energy storage system, whose exhaust structure includes a first connecting pipe, a second connecting pipe and a transition connecting pipe. One end of the second connecting pipe is connected to the exhaust port of the battery pack, which can discharge the high-temperature ejected material from the thermal runaway single cell in a timely manner, avoid the accumulation of gas in the battery pack and battery cluster, avoid secondary explosion, and improve the safety of the battery cluster.

[0005] In the aforementioned technical solution, the exhaust vent of the venting structure is positioned higher than the energy storage container to expel the high-temperature ejected material from the thermal runaway battery. However, this venting structure can easily cause water to flow back into the energy storage container, posing a certain safety risk. Utility Model Content

[0006] In view of this, the present invention proposes a lithium battery energy storage container that can prevent water from the external environment from flowing into the air passage, thus ensuring the safety of the energy storage container in use.

[0007] The technical solution of this utility model is achieved as follows: This utility model provides a lithium battery energy storage container, including a container body, multiple battery packs, and air ducts, wherein,

[0008] The battery pack is fixedly installed inside the box, and an explosion-proof valve is installed on the battery pack;

[0009] The air duct includes a riser, multiple connecting pipes, an exhaust pipe, and a baffle. The riser is fixedly mounted on the housing. One end of each connecting pipe is fixedly mounted on the riser and communicates with its interior. The end of the connecting pipe away from the riser is fixedly mounted on the battery pack, and the explosion-proof valve is located inside the connecting pipe. Each of the multiple connecting pipes corresponds one-to-one with a multiple battery pack. One end of each exhaust pipe is fixedly mounted on the riser and communicates with its interior. The end of the exhaust pipe away from the riser is located below the end of the exhaust pipe closest to the riser. The baffle is fixedly mounted on the bottom side inside the exhaust pipe.

[0010] Based on the above technical solutions, preferably, the air duct further includes louvers, which are fixedly installed inside the exhaust pipe and located on the side of the baffle away from the riser.

[0011] More preferably, the air duct further includes an insect-proof net, which is fixedly installed at the end of the exhaust pipe away from the riser.

[0012] Based on the above technical solutions, preferably, the connecting pipe includes a pipe body and a connecting plate, wherein,

[0013] One end of the pipe is fixedly mounted on the riser and connected to its interior;

[0014] The connecting plate is fixedly installed at the end of the pipe body away from the riser. The connecting plate is annular and is sealed and connected to the pipe body.

[0015] More preferably, the connecting plate is rectangular.

[0016] Based on the above technical solutions, preferably, the battery pack is provided in multiple groups, each group is provided with multiple battery packs, and the multiple battery packs in the same group are arranged in a vertical direction;

[0017] There are multiple risers, and each riser corresponds to one of the multiple battery packs.

[0018] More preferably, the airway further includes multiple horizontal tubes, which are fixedly disposed between the two vertical tubes and connected to their interiors.

[0019] Based on the above technical solutions, preferably, it also includes an exhaust fan, which is fixedly installed on the housing and connected to the end of the exhaust pipe away from the riser.

[0020] More preferably, the exhaust fan is located on the side of the housing near the explosion-proof valve.

[0021] More preferably, the exhaust fan is located on the side of the housing away from the explosion-proof valve.

[0022] The lithium battery energy storage container of this invention has the following advantages over the prior art:

[0023] (1) By setting up risers, connecting pipes and exhaust pipes, the high-temperature ejected material of the battery pack can be discharged in time when thermal runaway occurs. By tilting the exhaust pipe downward away from the riser and setting a baffle on the bottom side of the exhaust pipe, external water can be prevented from flowing into the riser and connecting pipe, thereby improving the safety of the energy storage container.

[0024] (2) By setting up louvers and insect nets, not only can external water be further prevented from entering the air duct, but also insects and rodents can be prevented from entering the air duct. By setting up exhaust fans, high-temperature ejected materials during battery pack thermal runaway can be actively discharged, thereby further improving the safety of energy storage containers. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of the air duct in a lithium battery energy storage container according to the present invention.

[0027] Figure 2 This is a cross-sectional view of the exhaust pipe in a lithium battery energy storage container according to the present invention.

[0028] Figure 3 This is a perspective view of a lithium battery energy storage container according to the present invention.

[0029] Figure 4 This is a perspective view of the explosion-proof valve in a lithium battery energy storage container according to this utility model;

[0030] Figure 5 This is a perspective view of the horizontal tube in a lithium battery energy storage container according to the present invention.

[0031] Figure 6 This is a perspective view of the riser section of a lithium battery energy storage container according to the present invention.

[0032] Figure 7 This is a perspective view of the exhaust fan in a lithium battery energy storage container according to the present invention, showing that the exhaust fan is located on the side of the container away from the explosion-proof valve.

[0033] Figure 8This is a perspective view of the exhaust fan in a lithium battery energy storage container according to the present invention, showing that the exhaust fan is located on the side of the container near the explosion-proof valve.

[0034] The components are: 1. Housing; 2. Battery pack; 21. Explosion-proof valve; 3. Air duct; 31. Riser; 32. Connecting pipe; 33. Exhaust pipe; 34. Baffle; 35. Louver; 36. Insect screen; 37. Horizontal pipe; 321. Pipe body; 322. Connecting plate; 4. Exhaust fan. Detailed Implementation

[0035] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] Example 1

[0037] This utility model discloses a lithium battery energy storage container, including a container body 1, multiple battery packs 2 and an air duct 3. The battery packs 2 are fixedly installed inside the container body 1. One end of the air duct 3 is connected to the exhaust port of the battery pack 2, and the other end extends out of the container body 1. When the battery pack 2 experiences thermal runaway and generates a large amount of gas, the high-temperature and high-pressure gas can be passively discharged from the container body 1 through the air duct 3, thereby improving the safety performance of the energy storage container.

[0038] like Figure 4 As shown, each battery pack 2 is equipped with an explosion-proof valve 21. The explosion-proof valve 21 is the exhaust port for the battery pack 2 in case of thermal runaway. When the battery pack 2 is running normally, the explosion-proof valve 21 is in a closed state. When the internal pressure of the battery pack 2 is too high, the explosion-proof valve 21 is opened.

[0039] like Figure 1 and Figure 3 As shown, the air duct 3 includes a riser 31, multiple connecting pipes 32, and an exhaust pipe 33. The riser 31 is fixedly installed on the housing 1. One end of the connecting pipe 32 is fixedly installed on the riser 31, and the interior of the connecting pipe 32 is connected to the interior of the riser 31. The end of the connecting pipe 32 away from the riser 31 is fixedly installed on the battery pack 2, and the explosion-proof valve 21 on the battery pack 2 is located inside the connecting pipe 32. Multiple connecting pipes 32 correspond one-to-one with multiple battery packs 2. One end of the exhaust pipe 33 is fixedly installed on the riser 31, and the interior of the exhaust pipe 33 is connected to the interior of the riser 31. When the battery pack 2 experiences thermal runaway and exhaust, the gas is discharged from the housing 1 sequentially through the explosion-proof valve 21, the connecting pipe 32, the riser 31, and the exhaust pipe 33.

[0040] like Figure 2As shown, the end of the exhaust pipe 33 away from the riser 31 is located below the end of the exhaust pipe 33 that is closer to the riser 31. That is, the end of the exhaust pipe 33 away from the riser 31 is inclined downward, which can prevent water from flowing into the riser 31 from the end of the exhaust pipe 33 away from the riser 31.

[0041] Similarly, such as Figure 2 As shown, the air duct 3 also includes a baffle 34, a louver 35, and an insect screen 36. The baffle 34 is fixedly installed on the bottom side inside the exhaust pipe 33, the louver 35 is fixedly installed inside the exhaust pipe 33 and located on the side of the baffle 34 away from the riser pipe 31, and the insect screen 36 is fixedly installed at the end of the exhaust pipe 33 away from the riser pipe 31. The baffle 34 and the louver 35 can further prevent water from flowing into the riser pipe 31 from the end of the exhaust pipe 33 away from the riser pipe 31, and the insect screen 36 can prevent insects and rodents from entering the air duct 3, thereby further improving the safety of the battery pack 2.

[0042] To improve the ease of connection between the connecting tube 32 and the battery pack 2, it is preferable to use expanding foam to fix the two together; at the same time, using expanding foam to connect the connecting tube 32 and the battery pack 2 can also improve the sealing of the connection.

[0043] like Figure 2 As shown, the connecting pipe 32 includes a pipe body 321 and a connecting plate 322. One end of the pipe body 321 is fixedly mounted on the riser 31, and the interior of the pipe body 321 is connected to the interior of the riser 31. The connecting plate 322 is fixedly mounted on the end of the pipe body 321 away from the riser 31. The connecting plate 322 is annular and is sealed and connected to the pipe body 321. The connecting plate 322 can increase the contact area between the connecting pipe 32 and the battery pack 2, thereby helping to improve the fixing firmness, fixing stability and sealing of the connecting pipe 32 and the battery pack 2.

[0044] like Figure 3 As shown, the air passage 3 is a large rectangular tubular structure, which can improve its exhaust effect. Correspondingly, the connecting plate 322 is rectangular and annular.

[0045] The battery pack 2 is configured with multiple groups, and each group of battery packs 2 contains multiple battery packs 2. The multiple battery packs 2 in the same group are arranged vertically. Correspondingly, multiple risers 31 are configured, and each riser 31 is equipped with multiple connecting pipes 32 and one exhaust pipe 33. The multiple risers 31 correspond one-to-one with the multiple groups of battery packs 2, and the multiple battery packs 2 correspond one-to-one with the multiple connecting pipes 32. Figure 3 As shown in the figure, only two battery packs 2 are shown.

[0046] Example 2

[0047] like Figure 5As shown, unlike Embodiment 1, the air passage 3 also includes multiple horizontal pipes 37. The horizontal pipes 37 are fixedly arranged between two vertical pipes 31, and the interior of the horizontal pipes 37 is connected to the interior of the vertical pipes 31. In this case, each vertical pipe 31 is connected through the horizontal pipes 37, thus reducing the number of exhaust pipes 33.

[0048] like Figure 5 As shown, it is preferable to fix the exhaust pipe 33 on the horizontal pipe 37 and make the interior of the exhaust pipe 33 connected to the interior of the horizontal pipe 37.

[0049] Example 3

[0050] like Figure 6 As shown, unlike Example 1, the air duct 3 is a smaller cylindrical structure, which can reduce the space occupied by the air duct 3 and improve the utilization rate of the lithium battery energy storage container.

[0051] Example 4

[0052] like Figure 7 As shown, unlike Embodiment 2, the air duct 3 is a smaller cylindrical structure. The lithium battery energy storage container of this utility model also includes an exhaust fan 4, which is fixedly installed on the container body 1 and connected to the end of the exhaust pipe 33 away from the riser 31. When the battery pack 2 experiences thermal runaway, the exhaust fan 4 can be turned on to actively exhaust the battery pack 2, thereby improving the exhaust efficiency of the lithium battery energy storage container.

[0053] like Figure 7 As shown, the exhaust fan 4 is located on the side of the housing 1 away from the explosion-proof valve 21.

[0054] Example 5

[0055] like Figure 8 As shown, unlike embodiment 4, the exhaust fan 4 is located on the side of the housing 1 near the explosion-proof valve 21. In this embodiment, the exhaust pipe 33 does not need to span across the housing 1, thereby reducing the length of the exhaust pipe 33.

[0056] The working principle of this utility model's lithium battery energy storage container is as follows:

[0057] Examples 1-3 are all passive venting, while examples 4 and 5 are active venting. When the battery pack 2 releases a large amount of gas due to thermal runaway, the high-temperature and high-pressure gas can be discharged to the outside of the container 1 in sequence along the explosion-proof valve 21, connecting pipe 32, riser pipe 31 and exhaust pipe 33, thereby improving the safety of the lithium battery energy storage container.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery energy storage container, characterized in that: Includes a housing (1), multiple battery packs (2), and an air duct (3), wherein, The battery pack (2) is fixedly installed inside the housing (1), and an explosion-proof valve (21) is provided on the battery pack (2). The air passage (3) includes a riser (31), multiple connecting pipes (32), an exhaust pipe (33), and a baffle (34). The riser (31) is fixedly installed on the housing (1). One end of the connecting pipe (32) is fixedly installed on the riser (31) and connected to its interior. The end of the connecting pipe (32) away from the riser (31) is fixedly installed on the battery pack (2), and the explosion-proof valve (21) is located inside the connecting pipe (32). Multiple connecting pipes (32) correspond one-to-one with multiple battery packs (2). One end of the exhaust pipe (33) is fixedly installed on the riser (31) and connected to its interior. The end of the exhaust pipe (33) away from the riser (31) is located below the end of the exhaust pipe (31). The baffle (34) is fixedly installed on the bottom side inside the exhaust pipe (33).

2. The lithium battery energy storage container as described in claim 1, characterized in that: The air passage (3) also includes a louver (35), which is fixedly installed inside the exhaust pipe (33) and located on the side of the baffle (34) away from the riser (31).

3. A lithium battery energy storage container as described in claim 2, characterized in that: The air passage (3) also includes an insect-proof net (36), which is fixedly installed at the end of the exhaust pipe (33) away from the riser (31).

4. A lithium battery energy storage container as described in claim 1, characterized in that: The connecting pipe (32) includes a pipe body (321) and a connecting plate (322), wherein, One end of the tube body (321) is fixedly mounted on the riser (31) and connected to its interior; The connecting plate (322) is fixedly disposed at one end of the pipe body (321) away from the riser (31). The connecting plate (322) is annular and is sealed and connected to the pipe body (321).

5. A lithium battery energy storage container as described in claim 4, characterized in that: The connecting plate (322) is rectangular.

6. A lithium battery energy storage container as described in claim 1, characterized in that: The battery pack (2) is provided in multiple groups, and each group is provided with multiple battery packs (2) arranged in the vertical direction. Multiple risers (31) are provided, and each riser (31) corresponds to a set of battery packs (2).

7. A lithium battery energy storage container as described in claim 6, characterized in that: The airway (3) also includes multiple horizontal tubes (37), which are fixedly arranged between the two vertical tubes (31) and connected to their interiors.

8. A lithium battery energy storage container as described in claim 1, characterized in that: It also includes an exhaust fan (4), which is fixedly installed on the housing (1) and connected to the end of the exhaust pipe (33) away from the riser (31).

9. A lithium battery energy storage container as described in claim 8, characterized in that: The exhaust fan (4) is located on the side of the housing (1) near the explosion-proof valve (21).

10. A lithium battery energy storage container as described in claim 8, characterized in that: The exhaust fan (4) is located on the side of the housing (1) away from the explosion-proof valve (21).

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