An energy storage cabinet

Abstract

The utility model discloses a kind of energy storage cabinets, including battery cabin and control cabin, multiple battery packs are equipped in the battery cabin, first explosion-proof valve and second explosion-proof valve are equipped on the battery cabin, smoke exhaust duct is equipped between the first explosion-proof valve and multiple battery packs, one end of the first explosion-proof valve is connected with outside, the other end of the first explosion-proof valve is connected with one end of the smoke exhaust duct, the other end of the smoke exhaust duct is connected with multiple battery packs, one end of the second explosion-proof valve is connected with outside, the other end of the second explosion-proof valve is connected with the inside of the cabin body of the battery cabin. The energy storage cabinet of the utility model can quickly and efficiently discharge combustible gas, reduce fire risk, and has the advantages of good safety.

Description

Technical Field

[0001] This utility model relates to the field of energy storage devices, specifically to a liquid-cooled energy storage device. Background Technology

[0002] In the field of liquid-cooled energy storage devices, commercial and industrial energy storage cabinets are modular energy storage devices that integrate components such as batteries, battery management systems (BMS), energy management systems (EMS), power conversion systems (PCS), and thermal management. They are mainly used for power storage and management in industrial and commercial scenarios and have functions such as peak and off-peak electricity price management, demand management, and backup power supply.

[0003] Commercial and industrial energy storage cabinets typically employ a left-right partitioned layout, with the entire cabinet divided into a battery compartment and a control compartment, and have clearly defined fire protection and explosion-proof requirements. However, the explosion-proof solutions and effectiveness of commercial and industrial energy storage cabinets in the industry are currently inconsistent, with many cabinets on the market suffering from unreasonable explosion-proof designs and unsatisfactory explosion-proof performance. Furthermore, traditional commercial and industrial energy storage cabinet designs often fail to completely isolate the temperature control module and the power distribution module, and the temperature control module lacks an independent heat dissipation channel, resulting in poor heat dissipation for the entire system.

[0004] Therefore, in order to improve the safety of industrial and commercial energy storage cabinets, it is necessary to design an energy storage cabinet with good explosion-proof performance and high heat dissipation efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an energy storage cabinet that can quickly and efficiently discharge combustible gases, reduce fire risk, and has good safety.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: An energy storage cabinet includes a battery compartment and a control compartment. The battery compartment houses multiple battery packs. A first explosion-proof valve and a second explosion-proof valve are installed on the battery compartment. An exhaust duct connects the first explosion-proof valve to the multiple battery packs. One end of the first explosion-proof valve is connected to the outside, and the other end is connected to one end of the exhaust duct, which in turn connects to the multiple battery packs. One end of the second explosion-proof valve is connected to the outside, and the other end is connected to the interior of the battery compartment. This energy storage cabinet features a first explosion-proof valve and a second explosion-proof valve. The first explosion-proof valve is connected to the battery packs via the exhaust duct, and the second explosion-proof valve is directly connected to the interior of the battery compartment. When the battery packs experience thermal runaway and generate smoke, the exhaust duct directs the smoke to the first explosion-proof valve, which then rapidly discharges the smoke to the outside. The exhaust duct collects most of the smoke and gas generated by the battery packs and isolates them from other components within the battery compartment, reducing direct contact between the smoke and gas and the ignition point. The second explosion-proof valve discharges any remaining smoke and gas from within the battery compartment. By installing a first explosion-proof valve, a second explosion-proof valve, and a smoke exhaust pipe connected to the battery pack, the smoke and combustible gases generated in the battery compartment can be quickly and efficiently discharged when the battery pack experiences thermal runaway. This rapidly reduces the concentration of smoke and combustible gases inside the cabinet, effectively reducing the risk of fire and explosion, and significantly improving the safety and service life of the energy storage cabinet.

[0007] Preferably, in the aforementioned energy storage cabinet, each of the multiple battery packs is equipped with a battery pack explosion-proof valve, and the exhaust duct is connected to the multiple battery packs through the battery pack explosion-proof valves. By setting battery pack explosion-proof valves on each battery pack and connecting them to the exhaust duct, it is ensured that the smoke and combustible gases generated by each battery pack can be independently and promptly introduced into the exhaust duct, avoiding gas accumulation inside the battery pack, improving the targeting and reliability of gas emission, and further enhancing the safety protection capability of the energy storage cabinet.

[0008] Preferably, in the aforementioned energy storage cabinet, the exhaust duct includes a primary duct and multiple secondary ducts. One end of the primary duct is connected to the first explosion-proof valve, one end of each secondary duct is connected to the battery pack explosion-proof valve, and the other end of each secondary duct is connected to the primary duct. This exhaust duct system, consisting of a primary duct and multiple secondary ducts, achieves centralized guidance and efficient collection of exhaust gases from multiple battery packs, ensuring unobstructed exhaust paths and comprehensive coverage, improving exhaust efficiency, and making the duct layout more rational and easier to maintain.

[0009] Preferably, in the aforementioned energy storage cabinet, the exhaust duct further includes a smoke hood, one end of which is connected to the primary duct, and the other end of which is connected to the first explosion-proof valve. The smoke hood, connected between the primary duct and the first explosion-proof valve, effectively gathers and guides smoke, preventing smoke and combustible gases from spreading at the top of the battery compartment. This ensures that smoke and combustible gases are discharged more concentratedly and quickly through the first explosion-proof valve, reducing the residence time of gases within the compartment.

[0010] Preferably, in the aforementioned energy storage cabinet, the first explosion-proof valve is located at the upper part of the battery compartment, and the second explosion-proof valve is located at the lower part of the battery compartment. By placing the first explosion-proof valve at the upper part of the battery compartment and the second explosion-proof valve at the lower part, the principle of natural upward movement of hot flue gas is utilized. This allows high-temperature combustible gases to be preferentially discharged from the upper first explosion-proof valve, while the lower second explosion-proof valve helps to discharge remaining gases, preventing heavier gases from accumulating in the lower part of the battery compartment, thus further improving smoke extraction efficiency and effectiveness.

[0011] Preferably, in the aforementioned energy storage cabinet, both the first and second explosion-proof valves are mounted on the door panel of the battery compartment, and the first and second explosion-proof valves are arranged diagonally along the door panel. Positioning the first and second explosion-proof valves diagonally on the door panel ensures that smoke and combustible gases are discharged more evenly and quickly.

[0012] Preferably, in the aforementioned energy storage cabinet, the control compartment includes an independent temperature control module compartment and a power distribution module compartment, with a partition between them. This partition separates the control compartment into independent temperature control and power distribution module compartments, ensuring that the temperature control module and power distribution module operate independently without interference. This effectively prevents the heat from thermally managing the system and the power distribution system from affecting each other, significantly improving heat dissipation in the control compartment and enhancing the operational stability of each module.

[0013] Preferably, in the aforementioned energy storage cabinet, one side of the temperature control module compartment is provided with temperature control compartment air inlet louvers, and the other side of the temperature control module compartment is provided with temperature control compartment exhaust louvers. The air inlet and exhaust louvers on both sides of the temperature control module compartment form an effective straight ventilation channel, ensuring smooth airflow for the temperature control module's heat dissipation, significantly improving the heat dissipation efficiency of the temperature control module, and ensuring its continuous and stable operation.

[0014] Preferably, in the aforementioned energy storage cabinet, one side of the power distribution module compartment is provided with air inlet louvers, and the other side of the power distribution module compartment is provided with exhaust louvers. The air inlet and exhaust louvers on both sides of the power distribution module compartment establish an independent natural ventilation and heat dissipation path for the power distribution module, effectively removing the heat generated by the power distribution components, preventing heat accumulation, and ensuring the reliability and lifespan of the power distribution module.

[0015] Preferably, the aforementioned energy storage cabinet also includes an exhaust fan on the power distribution module compartment, with the exhaust fan and the exhaust louvers located on the same side. Adding an exhaust fan to the side of the exhaust louvers enables forced ventilation, significantly enhancing the heat dissipation capacity of the power distribution module compartment. Especially under high temperature or high load conditions, it can quickly expel hot air, preventing equipment overheating and further improving the stability and safety of the system operation.

[0016] Compared with the prior art, the advantages of this utility model are: This utility model's energy storage cabinet is equipped with a first explosion-proof valve and a second explosion-proof valve. The first explosion-proof valve is connected to the battery pack via a smoke exhaust pipe, while the second explosion-proof valve is directly connected to the inner cavity of the battery compartment. When the battery pack experiences thermal runaway and generates smoke, the smoke exhaust pipe directs the smoke to the first explosion-proof valve, which then rapidly discharges the smoke to the outside. The smoke exhaust pipe collects most of the smoke and gas generated by the battery pack and isolates it from other components in the battery compartment, reducing direct contact between the smoke and gas and the ignition point. The second explosion-proof valve discharges any remaining smoke and gas from the battery compartment. By incorporating the first and second explosion-proof valves and the smoke exhaust pipe connected to the battery pack, the system can quickly and efficiently discharge smoke and flammable gases from the battery compartment when the battery pack experiences thermal runaway and generates smoke and flammable gases. This rapidly reduces the concentration of smoke and flammable gases inside the cabinet, effectively reducing the risk of fire and explosion, and significantly improving the safety and service life of the energy storage cabinet. Attached Figure Description

[0017] Figure 1 This is a front view of the energy storage cabinet in an embodiment.

[0018] Figure 2 This is a rear view of the energy storage cabinet in the embodiment.

[0019] Figure 3 This is a structural diagram of the internal structure of the battery compartment of the energy storage cabinet in an embodiment (front view).

[0020] Figure 4 This is a schematic diagram of the structure inside the door panel of the battery compartment of the energy storage cabinet in an embodiment.

[0021] Figure 5 This is a three-dimensional structural diagram of the energy storage cabinet in an embodiment (the door panel of the battery compartment is not shown).

[0022] Figure 6 This is a rear view diagram of the internal structure of the energy storage cabinet control compartment in an embodiment.

[0023] Legend: 1. Battery compartment; 11. Battery pack; 111. Battery pack explosion-proof valve; 12. First explosion-proof valve; 13. Second explosion-proof valve; 14. Smoke exhaust duct; 141. Primary duct; 142. Secondary duct; 143. Smoke hood; 2. Control compartment; 21. Temperature control module compartment; 211. Temperature control compartment air inlet louvers; 212. Temperature control compartment exhaust louvers; 213. Temperature control module; 22. Power distribution module compartment; 221. Power distribution compartment air inlet louvers; 222. Power distribution compartment exhaust louvers; 223. Power distribution compartment exhaust fan; 224. PCS; 225. High-voltage box; 23. Partition. Detailed Implementation

[0024] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0025] like Figures 1 to 6 As shown, the energy storage cabinet in this embodiment includes a battery compartment 1 and a control compartment 2. The battery compartment 1 is equipped with multiple battery packs 11. The battery compartment 1 is equipped with a first explosion-proof valve 12 and a second explosion-proof valve 13. A smoke exhaust pipe 14 is provided between the first explosion-proof valve 12 and the multiple battery packs 11. One end of the first explosion-proof valve 12 is connected to the outside, and the other end of the first explosion-proof valve 12 is connected to one end of the smoke exhaust pipe 14. The other end of the smoke exhaust pipe 14 is connected to the multiple battery packs 11. One end of the second explosion-proof valve 13 is connected to the outside, and the other end of the second explosion-proof valve 13 is connected to the interior of the battery compartment 1.

[0026] In this embodiment, each of the multiple battery packs 11 is provided with a battery pack explosion-proof valve 111, and the exhaust pipe 14 is connected to the multiple battery packs 11 through the battery pack explosion-proof valve 111.

[0027] In this embodiment, the smoke exhaust duct 14 includes a primary duct 141 and multiple secondary ducts 142. One end of the primary duct 141 is connected to the first explosion-proof valve 12, one end of the secondary duct 142 is connected to the battery pack explosion-proof valve 111, and the other end of the secondary duct 142 is connected to the primary duct 141. Specifically, one end of the secondary duct 142 is tightly connected to the battery pack explosion-proof valve 111 to ensure that the smoke from the battery pack explosion-proof valve 111 can directly enter the smoke exhaust duct 14.

[0028] In this embodiment, the smoke exhaust pipe 14 also includes a smoke hood 143, one end of which is connected to the primary pipe 141, and the other end of which is connected to the first explosion-proof valve 12.

[0029] In this embodiment, the first explosion-proof valve 12 is disposed at the upper part of the battery compartment 1, and the second explosion-proof valve 13 is disposed at the lower part of the battery compartment 1.

[0030] In this embodiment, the first explosion-proof valve 12 and the second explosion-proof valve 13 are both installed on the door panel of the battery compartment 1, and the first explosion-proof valve 12 and the second explosion-proof valve 13 are arranged diagonally along the door panel.

[0031] In this embodiment, the control compartment 2 includes a temperature control module compartment 21 and a power distribution module compartment 22 that are independent of each other, and a partition 23 is provided between the temperature control module compartment 21 and the power distribution module compartment 22.

[0032] In this embodiment, a temperature control module compartment 21 is provided with a temperature control compartment air inlet louver 211 on one side and a temperature control compartment exhaust louver 212 on the other side.

[0033] In this embodiment, a power distribution module compartment 22 is provided with a power distribution compartment air inlet louver 221 on one side and a power distribution compartment exhaust louver 222 on the other side.

[0034] In this embodiment, the power distribution module compartment 22 is also provided with a power distribution compartment exhaust fan 223, and the power distribution compartment exhaust fan 223 and the power distribution compartment exhaust louvers 222 are located on the same side.

[0035] In this embodiment, the energy storage cabinet adopts a left-right partition layout. The left side of the figure is the control compartment 2, and the right side is the battery compartment 1. The control compartment 2 is divided into two independent sealed compartments by the partition 23. The upper sealed compartment is the temperature control module compartment 21, and the lower sealed compartment is the power distribution module compartment 22.

[0036] The battery compartment 1 integrates multiple battery packs 11, an explosion-proof module (including a first explosion-proof valve 12, a second explosion-proof valve 13, and a smoke exhaust pipe 14), a fire suppression module, and liquid cooling piping. The fire suppression module and liquid cooling piping are existing technologies; existing energy storage cabinet fire suppression modules and liquid cooling piping can be applied here, so their specific structures will not be described in detail. When the energy storage cabinet is powered on, the composite detector of the fire suppression module operates, monitoring the concentration of combustible gas inside the battery compartment 1 in real time. Simultaneously, the explosion-proof module monitors pressure changes in the battery compartment 1. A miniature battery pack explosion-proof valve 111 is installed on the panel of each battery pack 11, which monitors the internal pressure of the battery pack 11. When dense smoke is generated inside the battery compartment 1, the composite detector detects a trigger signal and transmits it to the fire suppression module. The fire suppression piping immediately begins cluster spraying, and the first explosion-proof valve 12, the second explosion-proof valve 13, and the smoke exhaust pipe 14 are activated to quickly expel the gas and smoke from inside the battery compartment 1, effectively preventing further deterioration of thermal runaway. When the internal and external pressure difference is balanced, the explosion-proof module returns to its original position. The energy storage cabinet in this embodiment combines a fire-fighting module and an explosion-proof module, which can quickly reduce the concentration of combustible gas inside the cabinet and improve the safety of the system.

[0037] To improve the explosion-proof performance of the energy storage cabinet, this embodiment designs a dual explosion-proof circuit consisting of a first explosion-proof valve 12 and a second explosion-proof valve 13. Flow field simulation was conducted, and the results show that the overall air exchange time of the energy storage cabinet in this embodiment meets the explosion-proof requirements, and the explosion-proof effect is significantly better than that of a single circuit with only one explosion-proof valve. By adjusting the structural design of the first explosion-proof valve 12, the second explosion-proof valve 13, and the smoke exhaust pipe 14, better smoke exhaust efficiency and explosion-proof performance were achieved.

[0038] In this embodiment, the control compartment 2 is divided into two sealed compartments by the partition 23. The temperature control module compartment 21 includes a temperature control module 213, a temperature control compartment air inlet louver 211, and a temperature control compartment exhaust louver 212. The temperature control module 213 is installed inside the compartment. Outside air enters through the temperature control compartment air inlet louver 211, passes through the temperature control module 213, and is discharged through the temperature control compartment exhaust louver 212, forming an independent upper air duct. The power distribution module compartment 22 includes a PCS224 (power conversion system), a high-voltage box 225, air inlet louvers 221, air outlet louvers 222, and an exhaust fan 223. The PCS224 and high-voltage box 225 are located inside the compartment. External air enters through the air inlet louvers 221, passes through the PCS224 and high-voltage box 225, and exits through the exhaust louvers 222, forming an independent lower air duct. The exhaust fan 223 is located on one side of the exhaust louvers 222 to improve heat dissipation. The two independent air ducts are completely isolated and do not interfere with each other. Field testing showed that the system operates well and resolved the previous high-temperature alarm problem.

[0039] In this embodiment, the energy storage cabinet forms a dual explosion-proof circuit through the first explosion-proof valve 12 and the second explosion-proof valve 13, which can quickly and efficiently discharge smoke and combustible gases in the battery compartment 1, reduce the risk of fire, effectively prevent further deterioration of thermal runaway, and improve the safe life of the energy storage cabinet. In order to solve the problem of unsatisfactory heat dissipation of the temperature control module 213 and the power distribution module in the control compartment 2, dual independent air ducts are formed in the control compartment 2. The temperature control module compartment 21 and the power distribution module compartment 22 are independent of each other and do not affect each other. Each air duct dissipates heat independently, which improves the heat dissipation environment of the temperature control module 213 and the power distribution module, optimizes the heat dissipation of the control compartment 2, and helps to improve the system operating efficiency.

[0040] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. An energy storage cabinet, comprising a battery compartment (1) and a control compartment (2), wherein the battery compartment (1) is provided with a plurality of battery packs (11), characterized in that, The battery compartment (1) is provided with a first explosion-proof valve (12) and a second explosion-proof valve (13). The first explosion-proof valve (12) is connected to a smoke exhaust pipe (14) between it and the multiple battery packs (11). One end of the first explosion-proof valve (12) is connected to the outside, and the other end of the first explosion-proof valve (12) is connected to one end of the smoke exhaust pipe (14). The other end of the smoke exhaust pipe (14) is connected to the multiple battery packs (11). One end of the second explosion-proof valve (13) is connected to the outside, and the other end of the second explosion-proof valve (13) is connected to the interior of the battery compartment (1).

2. The energy storage cabinet according to claim 1, characterized in that, Each of the battery packs (11) is provided with a battery pack explosion-proof valve (111), and the exhaust pipe (14) is connected to the battery packs (11) through the battery pack explosion-proof valve (111).

3. The energy storage cabinet according to claim 2, characterized in that, The exhaust pipe (14) includes a primary pipe (141) and multiple secondary pipes (142). One end of the primary pipe (141) is connected to the first explosion-proof valve (12), one end of the secondary pipe (142) is connected to the battery pack explosion-proof valve (111), and the other end of the secondary pipe (142) is connected to the primary pipe (141).

4. The energy storage cabinet according to claim 3, characterized in that, The exhaust pipe (14) also includes a smoke hood (143), one end of which is connected to the primary pipe (141), and the other end of which is connected to the first explosion-proof valve (12).

5. The energy storage cabinet according to claim 1, characterized in that, The first explosion-proof valve (12) is located at the upper part of the battery compartment (1), and the second explosion-proof valve (13) is located at the lower part of the battery compartment (1).

6. The energy storage cabinet according to claim 5, characterized in that, The first explosion-proof valve (12) and the second explosion-proof valve (13) are both installed on the door panel of the battery compartment (1), and the first explosion-proof valve (12) and the second explosion-proof valve (13) are arranged diagonally along the door panel.

7. The energy storage cabinet according to any one of claims 1 to 6, characterized in that, The control cabin (2) includes a temperature control module cabin (21) and a power distribution module cabin (22) that are independent of each other, and a partition (23) is provided between the temperature control module cabin (21) and the power distribution module cabin (22).

8. The energy storage cabinet according to claim 7, characterized in that, One side of the temperature control module compartment (21) is provided with a temperature control compartment air inlet louver (211), and the other side of the temperature control module compartment (21) is provided with a temperature control compartment exhaust louver (212).

9. The energy storage cabinet according to claim 7, characterized in that, The power distribution module compartment (22) is provided with a power distribution compartment air inlet louver (221) on one side and a power distribution compartment exhaust louver (222) on the other side.

10. The energy storage cabinet according to claim 9, characterized in that, The power distribution module compartment (22) is also equipped with a power distribution compartment exhaust fan (223), and the power distribution compartment exhaust fan (223) and the power distribution compartment exhaust louvers (222) are located on the same side.

Images