Energy storage battery box

Abstract

This utility model discloses an energy storage battery box, including a battery module, a rupture disc assembly, and a cylindrical box body. The box body has a battery cavity for accommodating the battery module, and the battery cavity has an upper cavity wall. The rupture disc assembly is disposed on the upper cavity wall of the battery cavity to automatically rupture when the pressure inside the battery cavity reaches a preset pressure value. The energy storage battery box of this utility model embodiment can reduce the risk of rupture in extreme situations such as thermal runaway of the battery cells, and improve the safety of the battery box and the surrounding environment.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, specifically to an energy storage battery box. Background Technology

[0002] As a crucial component of the new energy field, the safety, efficiency, and reliability of energy storage batteries are of paramount importance. However, existing energy storage battery boxes require consideration of material usage and weight, making it difficult to achieve high pressure resistance. In extreme situations such as thermal runaway of the battery cells, the resulting pressure shocks are significant, posing a risk of battery box rupture and severely threatening the safety of the battery box and the surrounding environment. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an energy storage battery box that can reduce the risk of rupture in extreme situations such as thermal runaway of the battery cells, and improve the safety of the battery box and the surrounding environment.

[0005] The energy storage battery box of this utility model embodiment includes a battery module, a rupture disc assembly, and a cylindrical box body. The box body has a battery cavity for accommodating the battery module. The battery cavity has an upper cavity wall. The rupture disc assembly is disposed on the upper cavity wall of the battery cavity so as to automatically rupture when the pressure in the battery cavity reaches a preset pressure value.

[0006] In some embodiments, the housing includes a cylindrical body, a top cover, and a base. The top cover and the base are respectively connected to both ends of the cylindrical body. The top cover, the base, and the cylindrical body form the battery cavity, and the top cover forms the upper cavity wall.

[0007] In some embodiments, a sealing gasket is provided between the top cover and the cylinder; and / or a sealing gasket is provided between the base and the cylinder.

[0008] In some embodiments, the top cover has a through-hole for relieving pressure, and the rupture disc assembly includes a flange and a rupture disc body connected to each other. The flange is detachably connected to the top cover, and the rupture disc body blocks the rupture hole.

[0009] In some embodiments, the cylinder has an inlet for the immersion liquid to enter and an outlet for the immersion liquid to exit, both the inlet and the outlet penetrating the cylinder wall, and the outlet being located above the inlet.

[0010] In some embodiments, the energy storage battery box further includes a level gauge for monitoring the level of the immersion liquid in the battery cavity, the level gauge being connected to the cylinder.

[0011] In some embodiments, the energy storage battery box further includes a support frame, the support frame including a plurality of vertical frames arranged circumferentially along the box body and a plurality of annular frames stacked axially along the box body, the annular frames being connected to the vertical frames and the battery module being connected to the annular frames.

[0012] In some embodiments, two adjacent ring frames are arranged at intervals to form a first cooling channel between the two adjacent ring frames; at least two battery modules are connected to the same ring frame, and two adjacent battery modules arranged on the same ring frame are arranged at intervals to form a second cooling channel between the two adjacent battery modules.

[0013] In some embodiments, the base has a forklift hole.

[0014] In some embodiments, the base is connected to a mounting bracket having mounting holes through which ground bolts pass.

[0015] The energy storage battery box of this embodiment adopts a cylindrical structure. With the same amount of material, the box has higher pressure resistance, effectively dispersing pressure and preventing rupture in extreme situations such as thermal runaway of the battery cells, thereby improving the safety of the battery box and the surrounding environment. When the battery cells experience thermal runaway, releasing a large amount of heat and high-pressure gas, the box, with its superior structural mechanical properties, can effectively withstand the internal pressure for a short time, maintaining the integrity of the box structure and avoiding damage due to instantaneous structural instability. When the pressure inside the battery cavity rises to a preset pressure value, the rupture disc assembly automatically ruptures, rapidly releasing the accumulated high-pressure gas and preventing the box from rupturing due to excessive pressure expansion, thereby further ensuring the safety of the battery box and its surrounding environment. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the energy storage battery box of this utility model.

[0017] Attached reference numeral: 100, energy storage battery box;

[0018] 1. Battery module; 11. Second cooling channel;

[0019] 2. Rupture disc assembly;

[0020] 3. Housing; 31. Battery compartment; 32. Cylinder; 321. Liquid inlet; 322. Liquid outlet; 33. Top cover; 34. Base; 341. Pre-drilled opening; 342. Forklift hole;

[0021] 4. Level gauge;

[0022] 51. High-voltage DC connectors; 52. Low-voltage signal connectors;

[0023] 6. Support frame; 61. Vertical frame; 62. Circular frame; 621. First cooling channel;

[0024] 7. Mounting bracket. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figure 1 As shown, the energy storage battery box 100 of this utility model embodiment includes a battery module 1, a rupture disc assembly 2, and a cylindrical box body 3. The box body 3 has a battery cavity 31 for accommodating the battery module 1. The battery cavity 31 has an upper cavity wall. The rupture disc assembly 2 is disposed on the upper cavity wall of the battery cavity 31 so as to automatically rupture when the pressure in the battery cavity 31 reaches a preset pressure value.

[0027] The energy storage battery box 100 of this embodiment adopts a cylindrical structure for its body 3. With the same amount of material, the body 3 has higher pressure resistance, effectively dispersing pressure and preventing rupture in extreme situations such as thermal runaway of the battery cells, thereby improving the safety of the battery box and its surrounding environment. When the battery cells experience thermal runaway and release a large amount of heat and high-pressure gas, the body 3, with its superior structural mechanical properties, can effectively withstand the internal pressure for a short time, maintaining the integrity of the body 3 structure and avoiding damage to the body 3 due to instantaneous structural instability. When the pressure inside the battery cavity 31 rises to a preset pressure value, the rupture disc assembly 2 automatically ruptures, rapidly releasing the accumulated high-pressure gas and preventing the body 3 from rupturing due to excessive pressure expansion, thereby further ensuring the safety of the battery box and its surrounding environment.

[0028] In some embodiments, such as Figure 1 As shown, the housing 3 includes a cylindrical body 32, an upper cover 33, and a base 34. The upper cover 33 and the base 34 are respectively connected to the two ends of the cylindrical body 32. The upper cover 33, the base 34, and the cylindrical body 32 form the battery cavity 31, and the upper cover 33 forms the upper cavity wall of the battery cavity 31.

[0029] Specifically, such as Figure 1 As shown, the box 3 is placed vertically, with the top cover 33 on the upper side of the box 3 and the base 34 on the lower side of the box 3. Both the top cover 33 and the base 34 can be fixed to the box 3 by welding or flange connection, thereby forming a sealed battery cavity 31.

[0030] In some embodiments, a sealing gasket is provided between the top cover 33 and the cylinder 32; and / or a sealing gasket is provided between the base 34 and the cylinder 32.

[0031] Optionally, sealing gaskets are provided between the top cover 33 and the cylinder 32, and between the base 34 and the cylinder 32.

[0032] This improves the sealing performance of the connection between the top cover 33 and the cylinder 32, the base 34 and the cylinder 32, ensuring the overall airtightness of the battery cavity 31 and preventing impurities such as moisture and dust from the external environment from entering the battery cavity 31 and affecting the normal operation of the battery, thus causing safety accidents; at the same time, it prevents gas leakage inside the battery cavity 31, thereby improving the overall stability and safety of the battery box.

[0033] In some embodiments, the top cover 33 has a through-hole for pressure relief, and the rupture disc assembly 2 includes a flange and a rupture disc body connected to each other. The flange is detachably connected to the top cover 33, and the rupture disc body blocks the pressure relief hole.

[0034] Specifically, the flange is detachably connected to the top cover 33 via multiple bolt assemblies, making the disassembly and installation of the rupture disc assembly 2 more convenient.

[0035] In some embodiments, such as Figure 1 As shown, the cylinder 32 has an inlet 321 for the immersion liquid to enter and an outlet 322 for the immersion liquid to exit. Both the inlet 321 and the outlet 322 are provided through the cylinder wall of the cylinder 32, and the outlet 322 is located above the inlet 321.

[0036] The inlet 321 and outlet 322 can form the entry and exit points of the immersion liquid, so as to form an immersion liquid circulation cooling system. It is understood that the immersion liquid circulation cooling system circulates the immersion liquid inside and outside the battery cavity 31 to achieve the effect of cooling. This structure is well known to those skilled in the art and will not be described in detail here.

[0037] In some embodiments, the energy storage battery box 100 further includes a level gauge 4 for monitoring the level of the immersion liquid in the battery cavity 31, and the level gauge 4 is connected to the cylinder 32.

[0038] By setting up a level gauge 4, the liquid level inside the battery cavity 31 can be monitored, so that operators can obtain information about the liquid level inside the battery cavity 31 and carry out timely repairs if any abnormalities occur.

[0039] Specifically, such as Figure 1 As shown, the level gauge 4 is installed near the upper end of the cylinder 32, and the level of the immersion liquid is higher than that of the battery module 1, meaning that the battery module 1 is completely submerged in the immersion liquid, which can achieve a better cooling effect.

[0040] Optionally, such as Figure 1As shown, the side wall of the housing 3 is also provided with high voltage DC connector 51, low voltage signal connector 52, reserved interface and other structures. The high voltage DC connector 51 and low voltage signal connector 52 are arranged on the side wall of the housing 32 near the top cover 33, which facilitates connection with external power and control systems. The reserved port 341 is set on the base 34, which facilitates the expansion of other interface modules.

[0041] In some embodiments, such as Figure 1 As shown, the energy storage battery box 100 also includes a support frame 6, which includes multiple vertical frames 61 arranged circumferentially along the box body 3 and multiple ring frames 62 arranged axially along the box body 3. The ring frames 62 are connected to the vertical frames 61, and the battery module 1 is connected to the ring frames 62.

[0042] The battery cavity 31 is cylindrical, and multiple battery modules 1 are arranged in a layered stacking manner inside the battery cavity 31. This can improve the adaptability and versatility of the energy storage battery box 100, so that the battery cavity 31 can adapt to battery modules 1 of various shapes and specifications, and is suitable for cell layouts of different sizes and configurations. This provides greater convenience for subsequent product iterations and flexible deployment in different energy storage scenarios (such as industrial and commercial, grid side, and portable modular systems).

[0043] Optionally, the support frame 6 is fixed inside the battery cavity 31 by four locating pins.

[0044] Of course, in other embodiments, the support frame 6 can also be fixed in the battery cavity 31 by other means, such as bolt connection, plug connection, etc.

[0045] In some embodiments, two adjacent ring frames 62 are arranged at intervals to form a first cooling channel 621 between the two adjacent ring frames 62; at least two battery modules 1 are connected to the same ring frame 62, and two adjacent battery modules 1 arranged on the same ring frame 62 are arranged at intervals to form a second cooling channel 11 between the two adjacent battery modules 1.

[0046] Specifically, such as Figure 1 As shown, multiple annular frames 62 are evenly distributed along the vertical direction, and multiple vertical frames 61 are evenly distributed along the circumference of the battery cavity 31. The annular frames 62 and vertical frames 61 are fixed by welding or bolting to form a support frame 6 with a stable structure. Multiple battery modules 1 are arranged on the upper side of the annular frames 62, and the multiple battery modules 1 are arranged at intervals on the upper side of the annular frames 62. A first cooling channel 621 is formed between the battery module 1 and the annular frame 62 above it, and a second cooling channel 11 is formed between two adjacent battery modules 1.

[0047] The contact area between the battery module 1 and the immersion liquid can be increased by the first cooling channel 621 and the second cooling channel 11. The first cooling channel 621 and the second cooling channel 11 are used in conjunction with the immersion liquid circulation cooling system, which makes the energy storage battery box 100 have better heat dissipation, reduces the temperature fluctuation of the battery module 1 during charging and discharging, and is more conducive to battery temperature control, thereby improving battery performance and battery life and reducing the risk of thermal runaway.

[0048] In some embodiments, the base 34 has a forklift hole 342.

[0049] By providing a forklift hole 342, the energy storage battery box 100 can be easily moved using a forklift, thus facilitating the rapid movement of the energy storage battery box 100.

[0050] In some embodiments, the base 34 is connected to a mounting bracket 7, which has mounting holes through which ground bolts pass.

[0051] Specifically, such as Figure 1 As shown, the mounting bracket 7 is L-shaped and is fixedly connected to the base 34 by welding or bolting. A part of the mounting bracket 7 is in contact with the ground, and mounting holes are provided on the part of the mounting bracket 7 that is in contact with the ground. There are multiple mounting holes, which are arranged at intervals along the circumference of the cylinder 32. By passing ground bolts through the mounting holes, a stable connection between the energy storage battery box 100 and the ground can be achieved, ensuring the stability of the energy storage battery box 100 installation.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An energy storage battery box, characterized in that, The device includes a battery module, a rupture disc assembly, and a cylindrical housing. The housing has a battery cavity for accommodating the battery module. The battery cavity has an upper cavity wall. The rupture disc assembly is disposed on the upper cavity wall of the battery cavity to automatically rupture when the pressure inside the battery cavity reaches a preset pressure value.

2. The energy storage battery pack of claim 1, wherein, The housing includes a cylindrical body, a top cover, and a base. The top cover and the base are respectively connected to both ends of the cylindrical body. The top cover, the base, and the cylindrical body form the battery cavity, and the top cover forms the upper cavity wall.

3. The energy storage battery pack of claim 2, wherein, A sealing gasket is provided between the top cover and the cylinder; and / or a sealing gasket is provided between the base and the cylinder.

4. The energy storage battery pack of claim 2, wherein, The top cover has a through-hole for relieving pressure. The rupture disc assembly includes a flange and a rupture disc body that are connected to each other. The flange is detachably connected to the top cover, and the rupture disc body blocks the rupture hole.

5. The energy storage battery pack of claim 2, wherein, The cylinder has an inlet for the immersion liquid to enter and an outlet for the immersion liquid to exit. Both the inlet and the outlet are disposed through the cylinder wall, and the outlet is located above the inlet.

6. The energy storage battery pack of claim 5, wherein, The energy storage battery box also includes a level gauge for monitoring the level of the immersion liquid in the battery cavity, and the level gauge is connected to the cylinder.

7. The energy storage battery pack of claim 5, wherein, The energy storage battery box also includes a support frame, which includes multiple vertical frames arranged at intervals along the circumference of the box and multiple ring frames stacked along the axial direction of the box. The ring frames are connected to the vertical frames, and the battery module is connected to the ring frames.

8. The energy storage battery pack of claim 7, wherein, The two adjacent annular frames are arranged at intervals to form a first cooling channel between the two adjacent annular frames; At least two of the battery modules are connected to the same ring frame, and two adjacent battery modules are arranged at intervals on the same ring frame to form a second cooling channel between the two adjacent battery modules.

9. The energy storage battery pack of claim 2, wherein, The base has forklift holes.

10. The energy storage battery pack of claim 2, wherein, The base is connected to a mounting bracket, which has mounting holes for ground bolts to pass through.

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