Energy storage cabinet and power device

Abstract

The utility model discloses an energy storage cabinet and a power plant, the energy storage cabinet comprises a frame and a battery module, the frame forms a first diversion channel, the battery module is arranged on the frame, the battery module comprises a bottom tray and a plurality of battery cell modules, the plurality of battery cell modules are arranged on the bottom tray, a second flow guide channel and an inlet communicated with the second flow guide channel are formed in the bottom tray, the first anti-explosion valve of each battery cell module can be communicated with the inlet, and the second flow guide channel is communicated with the first flow guide channel. According to the energy storage cabinet disclosed by the utility model, high-temperature gas and electrolyte generated by thermal runaway of the battery cell module enter the second flow guide channel through the inlet and flow into the first flow guide channel, the high-temperature gas flows upwards, and the high-temperature electrolyte flows downwards, so that the condition of short-circuit arc discharge is avoided, and the probability of fire and explosion caused by the battery module is reduced; the safety of the energy storage cabinet is improved, a sensor and an exhaust device do not need to be assembled additionally, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of energy storage cabinet technology, and in particular to an energy storage cabinet and a power device. Background Technology

[0002] Related technologies indicate that existing industrial and commercial energy storage systems mostly adopt an integrated cabinet design, which mainly includes components such as battery clusters, high-voltage distribution boxes, fire extinguishing modules, cooling modules, and energy storage inverters (PCS). Battery clusters are typically composed of multiple battery packs. However, in existing PACK designs, when a cell within a single battery pack experiences thermal runaway, high-temperature ejected materials (conductive solid particles, high-temperature other substances, electrolyte, etc.) accumulate within the battery pack. When the internal pressure exceeds the design threshold, the explosion-proof valve on the battery pack opens to release gas. The released high-temperature flammable gases may then enter the energy storage cabinet. The energy storage cabinet also requires flammable gas detection sensors and ventilation modules to prevent the accumulation of flammable gases and potential explosion. Safety is the cornerstone of energy storage battery packs. Given a fixed cabinet size and ensuring consistent safety, the lower the cost per unit of energy storage cabinet, the stronger the product's competitiveness.

[0003] In existing conventional energy storage battery pack solutions, when a cell experiences thermal runaway, the emitted high-temperature gas first enters the battery pack and then exits through an explosion-proof valve. This can easily damage the internal insulation of the pack, causing short circuits and arcing. Electrolyte also enters the battery pack, and since electrolyte is flammable and explosive, a large accumulation inside the battery pack poses a high risk of deflagration and fire when exposed to sparks or open flames. Furthermore, the integrated energy storage cabinet requires the design of combustible gas sensors and exhaust equipment, which increases costs. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides an energy storage cabinet with good safety performance and low production cost.

[0005] This utility model also proposes a power device having the above-mentioned energy storage cabinet.

[0006] According to the first aspect of the present invention, an energy storage cabinet includes: a frame having a first flow channel; a battery module mounted on the frame, the battery module including: a bottom tray and multiple cell modules, the multiple cell modules being arranged on the bottom tray, the bottom tray having a second flow channel and an inlet communicating with the second flow channel, each cell module having a first explosion-proof valve communicating with the inlet, the second flow channel communicating with the first flow channel via a flow pipe (23).

[0007] According to the energy storage cabinet of this utility model, by forming a first flow channel within the frame and connecting it with a second flow channel formed within the bottom tray, high-temperature gas and electrolyte generated by thermal runaway of the battery cell module enter the second flow channel through the inlet. The high-temperature gas and electrolyte flow from the second flow channel into the first flow channel. The high-temperature gas flows upward and the high-temperature electrolyte flows downward, preventing the high-temperature gas and electrolyte from damaging the internal insulation of the battery cell module, thereby avoiding short circuits and arcing, reducing the probability of fire and explosion caused by the battery module, improving the safety of the energy storage cabinet, and eliminating the need for additional sensors and exhaust devices to discharge high-temperature gas and electrolyte, thus reducing production costs.

[0008] In some embodiments, the frame includes a vertical beam, a top crossbeam, and a bottom crossbeam, the top crossbeam being connected to the top end of the vertical beam, the bottom crossbeam being connected to the bottom end of the vertical beam, and at least one of the vertical beam, the top crossbeam, and the bottom crossbeam having the first flow channel formed therein.

[0009] In some embodiments, a second explosion-proof valve is provided on the top crossbeam and / or the vertical beam, and the second explosion-proof valve is connected to the first flow channel.

[0010] In some embodiments, the bottom tray includes: a tray body, the inlet formed on the tray body, and the second flow channel formed inside the tray body; and pads disposed at both ends of the tray body, with converging channels formed within the pads, the converging channels communicating with both the second flow channel and the first flow channel.

[0011] In some embodiments, the second flow channel includes a plurality of channels, which are arranged at intervals and are all connected to the confluence channel.

[0012] In some embodiments, the tray body includes a first plate and a second plate, with a plurality of connecting ribs spaced apart between the first plate and the second plate, the plurality of connecting ribs spaced apart to form a plurality of second flow channels, and the inlet is formed on the first plate and penetrates the first plate.

[0013] In some embodiments, the inlet includes multiple inlets, and the multiple inlets are arranged in a one-to-one correspondence with the multiple first explosion-proof valves.

[0014] In some embodiments, both ends of the pad are formed as open ends, and the two ends of the pad are provided with plugs to seal the open ends.

[0015] In some embodiments, the battery module includes a plurality of battery modules, which are stacked and arranged within the frame.

[0016] The power device according to the second aspect of the present invention includes the energy storage cabinet according to the first aspect of the present invention.

[0017] According to the power device of this utility model, by setting the energy storage cabinet of the first aspect mentioned above, the safety performance of the power device is improved and the production cost of the power device is reduced.

[0018] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an energy storage cabinet according to an embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the energy storage cabinet from another angle;

[0021] Figure 3 yes Figure 1 A schematic diagram of the battery module shown;

[0022] Figure 4 yes Figure 3 A schematic diagram of the bottom tray shown;

[0023] Figure 5 yes Figure 4 A partial cross-sectional view of the bottom tray shown;

[0024] Figure 6 yes Figure 4 A schematic diagram of the bottom tray from another angle;

[0025] Figure 7 yes Figure 3 A schematic diagram of the battery module from another angle;

[0026] Figure 8 yes Figure 3 This is a schematic diagram of the battery module from another angle.

[0027] Figure label:

[0028] 100. Energy storage cabinet; 1. Frame; 11. Vertical beam; 12. Top crossbeam; 13. Bottom crossbeam; 14. Second explosion-proof valve; 2. Battery module; 21. Bottom tray; 211. First plate; 2111. Inlet; 212. Second plate; 213. Second flow channel; 214. Pad; 2141. Combination channel; 215. Plug; 216. Connecting rib; 22. Battery cell module; 221. First explosion-proof valve; 23. Flow pipe. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] The following is for reference. Figures 1-8 The energy storage cabinet 100 according to a first aspect embodiment of the present utility model is described.

[0031] like Figures 1-8 As shown, the energy storage cabinet 100 according to the first aspect of the present invention includes: a frame 1 and a battery module 2.

[0032] Specifically, the frame 1 forms a first flow channel, and the battery module 2 is mounted on the frame 1. The battery module 2 includes a bottom tray 21 and multiple cell modules 22. The multiple cell modules 22 are arranged on the bottom tray 21. The bottom tray 21 forms a second flow channel 213 and an inlet 2111 that communicates with the second flow channel 213. The first explosion-proof valve 221 of each cell module 22 is connected to the inlet 2111. The second flow channel 213 is connected to the first flow channel through a flow pipe 23.

[0033] Understandably, when a single battery cell module experiences thermal runaway, high-temperature ejected gases will first accumulate within the module. Once the internal pressure exceeds a threshold, the explosion-proof valve will open to release these gases. However, this method presents several risks: the high-temperature gases and electrolyte may damage the internal insulation of the battery pack, leading to short circuits and arcing; the electrolyte is flammable and explosive, and if it accumulates excessively within the battery pack and encounters a spark or open flame, it can easily cause a fire or even an explosion. (Refer to...) Figure 1 , Figures 3-5 As shown, in this application, a first flow channel is formed in the frame 1 and a second flow channel 213 is formed in the bottom tray 21, and the first flow channel and the second flow channel 213 are connected. When the cell module 22 experiences thermal runaway, the first explosion-proof valve 221 opens and connects with the second flow channel 213. High-temperature gas and electrolyte enter the second flow channel 213 through the inlet 2111, and high-temperature gas and electrolyte flow from the second flow channel 213 into the first flow channel. The high-temperature gas flows upward and the high-temperature electrolyte flows downward. This avoids the high-temperature gas and electrolyte from damaging the internal insulation of the cell module 22, thereby avoiding short circuits and arcing, reducing the probability of fire and explosion caused by the battery module 2, and improving the safety of the energy storage cabinet 100.

[0034] According to the embodiment of the present invention, the energy storage cabinet 100 forms a first flow channel in the frame 1 and a second flow channel 213 in the bottom tray 21. The high-temperature gas and electrolyte generated by the thermal runaway of the battery cell module 22 enter the second flow channel 213 through the inlet 2111. The high-temperature gas and electrolyte flow from the second flow channel 213 into the first flow channel. The high-temperature gas flows upward and the high-temperature electrolyte flows downward, which avoids the high-temperature gas and electrolyte from damaging the internal insulation of the battery cell module 22, thereby avoiding the occurrence of short circuit arcing, reducing the probability of fire and explosion caused by the battery module 2, improving the safety of the energy storage cabinet 100, and completing the discharge of high-temperature gas and electrolyte without the need for additional sensors and exhaust devices, thus reducing production costs.

[0035] In some embodiments of this utility model, the frame 1 includes a vertical beam 11, a top horizontal beam 12, and a bottom horizontal beam 13. The top horizontal beam 12 is connected to the top end of the vertical beam 11, and the bottom horizontal beam 13 is connected to the bottom end of the vertical beam 11. At least one of the vertical beam 11, the top horizontal beam 12, and the bottom horizontal beam 13 has a first flow channel formed within it. (Refer to...) Figure 1 As shown, there are four vertical beams 11 extending in the vertical direction, four top crossbeams 12 connected end to end, and four bottom crossbeams 13 connected end to end. The top crossbeams 12 are connected to the top of the vertical beams 11, and the bottom crossbeams 13 are connected to the bottom of the vertical beams 11. A first flow channel is formed in the vertical beams 11, and a first flow channel is also formed in the top crossbeams 12 and the bottom crossbeams 13. Thus, the first flow channel is formed in frame 1. The structure of frame 1 is ingeniously designed. High-temperature gas and electrolyte are in the first flow channel. High-temperature gas flows upward and high-temperature electrolyte flows downward. High-temperature gas enters the top crossbeam 12 or is discharged from the top of the vertical beam 11, and high-temperature electrolyte enters the bottom crossbeam 13 or is discharged from the bottom of the vertical beam 11. In this way, high-temperature gas and electrolyte cannot enter the energy storage cabinet 100, avoiding short circuits, arcing, fires and explosions caused by thermal runaway, and improving the safety factor of the energy storage cabinet 100.

[0036] In some feasible embodiments, the vertical beam 11, the top horizontal beam 12, and the bottom horizontal beam 13 are all hollow square tubular components.

[0037] In some embodiments of this utility model, a second explosion-proof valve 14 is provided on the top horizontal beam 12 and / or the vertical beam 11, and the second explosion-proof valve 14 is communicative with the first flow guiding channel. (Refer to...) Figure 1 As shown, a second explosion-proof valve 14 is provided on the top crossbeam 12. When the pressure of the high-temperature gas in the first guide channel reaches a certain level, the second explosion-proof valve 14 opens and connects with the first guide channel to release the high-temperature gas, preventing the energy storage cabinet 100 from exploding due to excessive pressure in the first guide channel, thus improving the safety of the energy storage cabinet 100.

[0038] In some embodiments of this utility model, the bottom tray 21 includes: a tray body and a pad block 214. An inlet 2111 is formed on the tray body, a second guide channel 213 is formed inside the tray body, the pad block 214 is disposed at both ends of the tray body, and a confluence channel 2141 is formed inside the pad block 214. The confluence channel 2141 is connected to both the second guide channel 213 and the first guide channel. (Refer to...) Figure 4 As shown, the position of the confluence channel 2141 is lower than that of the second guide channel 213. In this way, under the action of the electrolyte's own gravity, it can smoothly flow from the second guide channel 213 into the confluence channel 2141 and from the confluence channel 2141 into the first guide channel, ensuring the smooth outflow of the electrolyte, improving the safety factor of the battery module 2, and avoiding the occurrence of deflagration.

[0039] In some embodiments of this utility model, the second flow guiding channel 213 includes multiple channels, which are arranged at intervals and all communicate with the converging channel 2141. (Refer to...) Figure 5 As shown, multiple second flow channels 213 are arranged sequentially at intervals along the left-right direction, and each second flow channel 213 is connected to the confluence channel 2141. This ensures that the first explosion-proof valve 221 of each cell module 22 within each battery module 2 can discharge high-temperature gas and electrolyte into the second flow channel 213 in the event of thermal runaway, and then flow from the second flow channel 213 into the confluence channel 2141, finally exiting the energy storage cabinet 100 through the first flow channel. The structure is simple and ingeniously designed, preventing high-temperature gas and electrolyte from damaging the internal insulation of the cell module 22, thereby avoiding short circuits and arcing.

[0040] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 As shown, the tray body includes a first plate 211 and a second plate 212. Multiple connecting ribs 216 are spaced apart between the first plate 211 and the second plate 212, and these connecting ribs 216 space out multiple second flow channels 213. An inlet 2111 is formed on and penetrates the first plate 211. Therefore, the connecting ribs 216 improve the structural strength of the bottom tray 21, and the connecting ribs 216 separate the multiple second flow channels 213, preventing high-temperature gas from entering other second flow channels 213, further improving the safety of the energy storage cabinet 100.

[0041] Furthermore, such as Figure 1As shown, a guide pipe 23 connects the bottom tray 21 and the frame 1. The upper end of the guide pipe 23 is connected to the bottom tray 21, and the lower end of the guide pipe 23 is connected to the frame 1. A third guide channel is formed inside the guide pipe 23. The upper end of the third guide channel is connected to the confluence channel 2141, and the lower end of the third guide channel is connected to the first guide channel. This allows for better introduction of the high-temperature electrolyte from the confluence channel 2141 into the first guide channel, preventing leakage of the high-temperature electrolyte and improving the safety of the energy storage cabinet 100.

[0042] In some embodiments of this utility model, the inlet 2111 includes multiple inlets, and the multiple inlets 2111 are arranged in a one-to-one correspondence with multiple first explosion-proof valves 221. This ensures that in the event of thermal runaway in each battery cell module 22, both the high-temperature electrolyte and gas can flow into the second guide channel 213, thereby improving the safety factor of each battery cell module 22.

[0043] Reference Figure 4 As shown, at least one end of the pad 214 is formed as an open end, and a plug 215 is provided at the open end of the pad 214 to seal the open end. This facilitates cleaning of the manifold 2141 inside the pad 214, preventing the presence of solids ejected from the battery module 22 in the event of thermal runaway within the manifold 2141, thus reducing maintenance difficulty and cost. Furthermore, when the pressure inside the manifold 2141 cannot be effectively discharged in a timely manner, the sufficiently large force of the high-temperature gas and electrolyte pushes out the plug 215 from the open end, further ensuring the safety of the energy storage cabinet 100.

[0044] In some embodiments of this invention, the battery module 2 comprises multiple modules, which are stacked within the frame 1. This reduces the horizontal space required for the energy storage cabinet 100 and also saves on assembly costs.

[0045] The power device according to the second aspect of the present invention includes the energy storage cabinet 100 according to the first aspect of the present invention described above.

[0046] According to the power device of the present utility model embodiment, by setting the energy storage cabinet 100 of the first aspect embodiment above, the safety performance of the power device is improved and the production cost of the power device is reduced.

[0047] 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.

[0048] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage cabinet (100), characterized in that, include: A frame (1) having a first flow channel; A battery module (2) is mounted on the frame (1). The battery module (2) includes a bottom tray (21) and a plurality of cell modules (22). The plurality of cell modules (22) are arranged on the bottom tray (21). A second flow channel (213) and an inlet (2111) communicating with the second flow channel (213) are formed on the bottom tray (21). The first explosion-proof valve (221) of each cell module (22) is communicating with the inlet (2111). The second flow channel (213) is connected to the first flow channel through a flow pipe (23).

2. The energy storage tank (100) of claim 1, wherein, The frame (1) includes a vertical beam (11), a top crossbeam (12) and a bottom crossbeam (13). The top crossbeam (12) is connected to the top end of the vertical beam (11), and the bottom crossbeam (13) is connected to the bottom end of the vertical beam (11). The first flow channel is formed in at least one of the vertical beam (11), the top crossbeam (12) and the bottom crossbeam (13).

3. The energy storage cabinet (100) according to claim 2, characterized in that, A second explosion-proof valve (14) is provided on the top crossbeam (12) and / or the vertical beam (11), and the second explosion-proof valve (14) can be connected to the first flow channel.

4. The energy storage cabinet (100) according to claim 3, characterized in that, The bottom tray (21) includes: The tray body, the inlet (2111) is formed on the tray body, and the second flow channel (213) is formed inside the tray body; A pad (214) is provided at both ends of the tray body. A confluence channel (2141) is formed in the pad (214). The confluence channel (2141) is connected to the second guide channel (213) and the first guide channel.

5. The energy storage cabinet (100) according to claim 4, characterized in that, The second flow channel (213) includes multiple channels, and the multiple channels (213) are arranged at intervals and are all connected to the converging channel (2141).

6. The energy storage cabinet (100) according to claim 5, characterized in that, The tray body includes a first plate (211) and a second plate (212). There are multiple connecting ribs (216) arranged at intervals between the first plate (211) and the second plate (212). The multiple connecting ribs (216) are spaced out to form multiple second flow channels (213). The inlet (2111) is formed on the first plate (211) and penetrates the first plate (211).

7. The energy storage cabinet (100) according to claim 6, characterized in that, The inlet (2111) includes multiple inlets, and each of the multiple inlets (2111) is arranged in a one-to-one correspondence with a multiple of the first explosion-proof valves (221).

8. The energy storage cabinet (100) according to claim 4, characterized in that, Both ends of the pad (214) are formed as open ends, and both ends of the pad (214) are provided with plugs (215) to seal the open ends.

9. The energy storage cabinet (100) according to any one of claims 1-8, characterized in that, The battery module (2) includes multiple battery modules (2) stacked within the frame (1).

10. A power unit, characterized in that, Includes the energy storage cabinet (100) according to any one of claims 1-9.

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