High-safety liquid cooling energy storage cabinet

Abstract

The utility model provides a high safety liquid cooling energy storage cabinet which comprises a cabinet body, a first chamber and a second chamber are formed in the cabinet body, a plurality of battery modules are installed in the first chamber, the battery modules are arranged up and down at equal intervals, each battery module comprises a cuboid shell, an installation cavity is formed in the shell, a vertical baffle is arranged in the installation cavity, and the vertical baffle is arranged in the installation cavity. The vertical baffle divides the mounting cavity into a front cavity and a rear cavity, and the upper ends of the front cavity and the rear cavity are communicated; the front end faces of the battery modules are provided with fire-fighting sprayers and pressure relief valves which are communicated with the front cavities, the fire-fighting sprayers on every two vertically adjacent battery modules are connected through a first pipeline and are connected in series, and the fire-fighting sprayer on the battery module located at the lowest end is provided with a second pipeline. And the second pipeline is used as a main pipeline and is communicated with a fire-fighting tank in the second cavity or outside the cabinet body. The high-safety liquid cooling energy storage cabinet is compact in structure, small in size, high in safety, good in stability, low in use and maintenance cost and long in service life.

Description

Technical Field

[0001] This utility model relates to an energy storage cabinet, and more particularly to a high-safety liquid-cooled energy storage cabinet. Background Technology

[0002] Energy storage cabinets have become an important part of modern energy management and power storage, and are widely used in power systems, residential communities, transportation and other fields, especially in the fields of solar power generation and wind power generation. Their main function is to safely and reliably store electrical energy and release it when needed, thereby improving energy utilization efficiency, alleviating the contradiction between power supply and demand, and supporting the integration of renewable energy.

[0003] However, with the expansion of energy storage cabinets, their safety has become increasingly important. These cabinets often store high-capacity batteries, and short circuits, overcharging, or other accidents can easily trigger fires or explosions, causing casualties and property damage. Existing fire suppression systems for energy storage cabinets suffer from the following problems: slow extinguishing speed, poor fire suppression effectiveness, and significant environmental pollution, making them ineffective in addressing the complexity and spread of energy storage cabinet fires.

[0004] Therefore, there is an urgent need to develop a new and efficient fire-fighting technology for energy storage cabinets that can quickly, accurately, and safely extinguish fires and reduce the losses caused by fires. Utility Model Content

[0005] Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to provide a high-safety liquid-cooled energy storage cabinet that is compact in structure, small in size, easy to install, fast in response and highly accurate.

[0007] Technical solutions to the problem

[0008] This utility model provides a high-safety liquid-cooled energy storage cabinet, which includes a cabinet body 1. The cabinet body 1 has a first chamber 10a and a second chamber 10b formed within it. A battery module 2 is installed in the first chamber 10a. Multiple battery modules 2 are arranged equidistantly vertically. Each battery module 2 includes a cuboid shell with a mounting cavity formed within it. A vertical baffle 21 is provided within the mounting cavity, parallel to the width direction of the battery module 2 and located at the front end of the mounting cavity, dividing the mounting cavity into... The battery module 2 has a front chamber 20a and a rear chamber 20b, with the upper ends of the front chamber 20a and the rear chamber 20b connected. The front end face of the battery module 2 is provided with a fire sprinkler 3 and a pressure relief valve 5 that connect to the front chamber 20a. The fire sprinklers 3 on two adjacent battery modules 2 are connected in series by a first pipe 41. The fire sprinkler 3 on the lowest battery module 2 is provided with a second pipe 42, which serves as a main pipe and connects to the fire tank inside the second chamber 10b or outside the cabinet 1.

[0009] Furthermore, the fire sprinkler head 3 is located at the upper left or upper right corner of the front cavity 20a.

[0010] Furthermore, a top plate 22 is horizontally arranged at the top of the rear cavity 20b. The top plate 22 has a gap with the top surface of the mounting cavity to form an upper cavity 20c. The top plate 22 has multiple air holes that communicate with the rear cavity 20b and are arranged in a matrix.

[0011] Furthermore, the height of the upper cavity 20c is 8mm-20mm.

[0012] Furthermore, the fire sprinkler head 3 includes a main valve seat 31 fixed to the front end of the battery module 2. The rear end face of the main valve seat 31 is provided with a valve hole 30. The valve hole 30 is a stepped hole with a large hole and a small hole. The end of the valve hole 30 is provided with a nozzle 32. The outlet end of the nozzle 32 is located in the front cavity 20a. The large hole is provided with a valve core 33 and a first elastic component that causes the valve core 33 to have a forward movement tendency to block the communication between the large hole and the small hole. The small hole is provided with a diaphragm 35. The front end of the small hole is provided with a puncture needle 391. The front end of the main valve seat 31 is provided with a drive mechanism 39 connected to the puncture needle 391 and used to drive its movement to puncture the diaphragm. The top surface and bottom surface of the main valve seat 31 are respectively provided with an air inlet 301 and an air outlet 302. The air inlet 301 and the air outlet 302 are coaxially arranged and both communicate with the small hole.

[0013] Furthermore, the driving mechanism 39 is an electromagnet or a gas generator.

[0014] Furthermore, a valve block 34 is fixed to the inner end of the large hole. The valve block 34 has a central hole through both ends to form an air passage 340. The end of the valve core 33 can be attached to the tail of the valve block 34 to achieve blocking. The diaphragm 35 is disposed between the end of the valve block 34 and the stepped surface of the valve hole and blocks the air inlet end of the air passage 340.

[0015] Furthermore, the diaphragm 35 includes a circular diaphragm body 351 and an annular sealing rings 352 disposed on both sides of the diaphragm body 351.

[0016] Furthermore, the valve core 33 has a concave hole 330 at its end that is coaxial with the puncture needle 391 and can accommodate the puncture needle 391 during puncture.

[0017] Furthermore, the diaphragm body 351 is a copper film.

[0018] Beneficial effects

[0019] This utility model of a high-safety liquid-cooled energy storage cabinet features an independently installed fire sprinkler on each battery module, allowing for independent control and triggering. This effectively suppresses the spread of fire, ensuring high safety and stability. The top plate structure facilitates internal wiring and ensures that the extinguishing agent fully and evenly covers the entire battery module from top to bottom, resulting in high extinguishing efficiency and effectiveness. A pressure relief valve automatically releases pressure in abnormal situations, reducing safety hazards caused by excessive pressure. Simultaneously, the pressure relief reduces internal pressure, allowing the extinguishing agent to enter smoothly and distribute evenly, improving extinguishing efficiency and effectiveness. The optimized design of the fire sprinklers ensures rapid response and quick fire suppression, preventing fire spread and minimizing losses. The unidirectional valve structure allows the extinguishing agent to enter the battery module in one direction, preventing reverse flow and ensuring effective utilization. This utility model of a high-safety liquid-cooled energy storage cabinet is compact, small in size, highly safe, stable, has low operating and maintenance costs, and a long service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0021] Figure 2 This is a diagram showing the internal structure of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0022] Figure 3 This is a schematic diagram of the battery module structure of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0023] Figure 4 This is a cross-sectional view of the battery module of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the pressure relief valve of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0025] Figure 6 for Figure 5 Enlarged view of section A in the middle;

[0026] Figure 7 This is a cross-sectional view of the pressure relief valve of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0027] Figure 8 This is a structural schematic diagram of the fire sprinkler head of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0028] Figure 9 This is a schematic diagram of the fire sprinkler head of the high-safety liquid-cooled energy storage cabinet of this utility model from another angle;

[0029] Figure 10 This is a cross-sectional view of the fire sprinkler head of the high-safety liquid-cooled energy storage cabinet of this utility model;

[0030] Figure 11 for Figure 10 Enlarged view of section B in the middle. Detailed Implementation

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] See Figures 1-11 This utility model provides a high-safety liquid-cooled energy storage cabinet, mainly used for solar power generation and wind power generation. It includes a cabinet body 1, within which a vertical partition 11 divides the cabinet body 1 into a first chamber 10a and a second chamber 10b, both open at the front. Doors (not shown in the figure) are respectively provided at the open ends of the first chamber 10a and the second chamber 10b. The width of the first chamber is greater than the width of the second chamber. Multiple battery modules 2 are installed in the first chamber 10a, and they are equidistant vertically. 2 includes a rectangular shell with a mounting cavity formed inside. A vertical baffle 21 is provided in the mounting cavity, which is parallel to the width direction of the battery module 2 and is located at the front end of the mounting cavity, dividing the mounting cavity into a front cavity 20a and a rear cavity 20b. The length of the front cavity is 5cm-10cm, which is used to install various interfaces, etc., to avoid contact with the battery module installed in the rear cavity and improve safety. The rear cavity 20b contains multiple battery modules, which serve as energy storage units for storing electrical energy. At the same time, the upper ends of the front cavity 20a and the rear cavity 20b are connected.

[0033] A fire sprinkler head 3 and a pressure relief valve 5 are provided on the front end of the battery module 2. The spray end of the fire sprinkler head 3 is connected to the front chamber 20 and is used to quickly spray the extinguishing agent, which is carbon dioxide, when a flame is detected. The pressure relief valve 5 is also connected to the front chamber. Once the battery overheats and the pressure rises, it can be opened quickly to release the internal pressure and ensure that the fire sprinkler head 3 works smoothly, avoiding excessive internal pressure that would affect the smooth and sufficient entry of the extinguishing agent.

[0034] The fire sprinklers 3 on two adjacent battery modules 2 are connected by a first pipe 41, forming a series connection. The fire sprinkler 3 on the bottom battery module 2 is provided with a second pipe 42. The second pipe 42 serves as the main pipe and is connected to the fire tank, serving as the main inlet of the fire protection system. The fire tank can be located inside the second chamber 10b or outside the cabinet 1. The fire tank is a carbon dioxide tank.

[0035] To facilitate wiring, i.e., electrical connection between battery modules, in this embodiment, the fire sprinkler head 3 is located in the upper left or upper right corner of the front cavity 20a. This reduces the space occupied and facilitates wiring and other operations during assembly, avoiding interference (bumps) to cables or cooling pipes. In this application, a cooling channel is provided on the bottom surface of the housing, which is located inside the bottom plate of the housing. Two cooling pipes are provided on both sides of the front end of the first chamber 10a. The two ends of the cooling channel are respectively connected to the two cooling pipes through two branch pipes to realize the entry and exit of coolant and form a cooling cycle. The two ends of the cooling pipes are respectively connected to the coolant supply tank in the second chamber 10b.

[0036] A top plate 22 is horizontally arranged at the top of the rear cavity 20b. There is a gap between the top plate 22 and the top surface of the mounting cavity to form an upper cavity 20c. The height of the upper cavity 20c is 8mm-20mm. The lead wires of each battery module are located in the upper cavity 20c, which facilitates wiring and improves the overall compactness. It also avoids the accumulation of wires on the battery module, thus improving safety. At the same time, there are multiple air holes on the top plate 22 that connect to the rear cavity 20b. These air holes are arranged in a matrix, which allows the fire extinguishing agent (carbon dioxide) to enter the lower cavity from top to bottom. This results in high uniformity, high fire extinguishing efficiency, and good effect. It ensures that when a flame is generated, the fire extinguishing agent can quickly cover the battery module, reducing the risk of thermal runaway.

[0037] In this application, the fire sprinkler head 3 includes a main valve seat 31, which is a rectangular parallelepiped fixed to the front end of the battery module 2 by four bolts. In this application, it is located at a corner near the second chamber, specifically the upper left corner in this embodiment. A valve hole 30 is provided on the rear end face of the main valve seat 31, which faces the front chamber. The valve hole 30 is a stepped hole with a large hole and a small hole, with the inner end of the large hole at the rear and the end of the small hole at the front. A nozzle 32 is provided at the end of the valve hole 30, and a spray hole 320 is provided at the center of the nozzle 32. The outlet end (spray hole) of the nozzle 32 is located inside the front chamber 20a. The nozzle 32 contains a valve core 33 and a first elastic component. The valve core is slidably fitted within a large orifice. Specifically, a hole is formed at the front end of the nozzle 32, creating a sliding orifice 321. A hole is formed at the center of the rear end face of the sliding orifice, creating a spray orifice 320. The rear end of the valve core has a sliding portion that fits within the sliding orifice 321. Several grooves are formed on the sidewall of the sliding portion, allowing the sliding cavity to connect with the large orifice, thus forming a flow channel to facilitate the passage of the extinguishing agent. Several protrusions are evenly distributed around the sidewall of the valve core, forming a spring seat. The first elastic component is a compression spring, which is positioned between the rear end of the nozzle and the spring seat, allowing the valve core to... The forward movement tendency, i.e., the tendency to move towards the small orifice, can block the connection between the large orifice and the small orifice, thus forming a one-way valve structure; a diaphragm 35 is provided inside the small orifice, which blocks the fire extinguishing agent from entering the small orifice; a piercing needle 391 is provided at the front end of the small orifice; a driving mechanism 39 is provided at the front end of the main valve seat 31, which is connected to the piercing needle 391 and is used to drive it to move back and forth, thereby piercing the diaphragm, allowing the fire extinguishing agent to enter the small orifice and open the valve core, and spray out from the spray hole into the battery module to achieve fire extinguishing; an air outlet 302 is provided on the top surface of the main valve seat 31, and an air inlet 301 is provided on the bottom surface of the main valve seat 31. The air inlet 301 and the air outlet 302 are coaxially arranged. In this embodiment, the axes of both are perpendicular to the horizontal plane and are connected to the small hole. During assembly, two adjacent fire sprinklers are connected through the first pipe 41. Specifically, the upper end of the first pipe 41 is connected to the air inlet 301 of the upper fire sprinkler and the lower end is connected to the air outlet 302 of the lower fire sprinkler. A plug is provided on the air outlet 302 of the top fire sprinkler and a second pipe 42 is provided on the air inlet of the bottom fire sprinkler and connected to the fire tank as the air inlet end. The first pipe and the second pipe form the fire pipeline 4.

[0038] In order to increase the puncture stroke and ensure that the puncture needle 391 can effectively puncture the diaphragm 35, in this embodiment, a concave hole 330 is provided at the end of the valve core 33. The concave hole 330 is coaxial with the puncture needle 391 and can accommodate the puncture needle 391 during puncture, thus reducing the installation space. In order to ensure the smooth entry of gas after puncture, the puncture needle is a hollow structure with several small holes on its side wall to facilitate gas passage and increase gas flow.

[0039] To reduce processing difficulty and cost, this application includes a valve block 34 fixed to the inner (front end) of the large hole. The valve block 34 is circular and threaded into the large hole. Central holes penetrate both ends of the valve block 34, forming air passages 340. The end of the valve core 33 can fit against the tail of the valve block 34 to achieve blocking. To improve operational reliability, the rear end of the air passage 340 is provided with a tapered surface, i.e., a tapered hole. The front end of the valve core 33 is a frustum, which fits against the tapered hole. A sealing ring is provided between the contact surfaces of the frustum and the tapered hole to form a seal. The contact surfaces are inclined, and the angle between them and the axis is 30-45°, ensuring centering. It can increase the contact area and improve the sealing reliability, so that the valve core can cooperate more stably with the valve block during operation and reduce the risk of leakage. The diaphragm 35 is set between the front end of the valve block 34 and the stepped surface in the valve hole. It can block the air inlet of the air passage 340. Specifically, the diaphragm 35 includes a circular diaphragm body 351 and annular sealing rings 352 set on both sides of the diaphragm body 351. The stepped surface and the end face of the valve block contact and press with the sealing rings, which improves the installation strength of the diaphragm and has good sealing performance. The diaphragm body 351 is a copper film, which has good thermal conductivity and corrosion resistance, can withstand certain pressure and temperature, and has good stability in use.

[0040] In this application, the driving mechanism 39 is an electromagnet or a gas generator. The gas generator is similar to a gas generator for airbags. It includes a chemical (e.g., sodium azide) and an ignition device. By igniting and generating a chemical reaction, nitrogen gas is produced, which forms thrust. The driving device uses the detection sensor inside the battery module as a signal input terminal. When the internal detection sensor (e.g., temperature sensor, smoke sensor) detects a flame, it sends a signal, which is then sent by the controller to make the driving device on the battery module work and trigger fire extinguishing.

[0041] In this application, the pressure relief valve 5 includes a second valve seat 51 that is fitted and installed on the front end face of the battery module. The second valve seat 51 is circular, and a circular groove is provided on its front end face. Multiple exhaust ports 50 are evenly distributed circumferentially in the circular groove, and the exhaust ports communicate with the front cavity. A through hole is provided in the center of the valve seat, and a guide post 52 is slidably installed in the through hole. The rear end of the guide post is provided with an annular protrusion 521 to form a spring seat. A compression spring 54 is provided between the spring seat and the second valve seat. A sealing cover 53 is provided in the circular groove. The sealing cover 53 is fixedly connected to the guide post. Under the action of the spring force, the sealing cover presses against the annular groove, that is, presses against the second valve seat 51. At this time, it is in a sealed state. When the internal pressure is too high, the exhaust port generates high pressure and pushes open the sealing cover to relieve pressure, avoids explosion or shell deformation caused by sudden increase in internal pressure, and improves safety.

[0042] This utility model of a high-safety liquid-cooled energy storage cabinet features an independently installed fire sprinkler on each battery module, allowing for independent control and triggering. This effectively suppresses the spread of fire, ensuring high safety and stability. The top plate structure facilitates internal wiring and ensures that the extinguishing agent fully and evenly covers the entire battery module from top to bottom, resulting in high extinguishing efficiency and effectiveness. A pressure relief valve automatically releases pressure in abnormal situations, reducing safety hazards caused by excessive pressure. Simultaneously, the pressure relief reduces internal pressure, allowing the extinguishing agent to enter smoothly and distribute evenly, improving extinguishing efficiency and effectiveness. The optimized design of the fire sprinklers ensures rapid response and quick fire suppression, preventing fire spread and minimizing losses. The unidirectional valve structure allows the extinguishing agent to enter the battery module in one direction, preventing reverse flow and ensuring effective utilization. This utility model of a high-safety liquid-cooled energy storage cabinet is compact, small in size, highly safe, stable, has low operating and maintenance costs, and a long service life.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-safety liquid-cooled energy storage cabinet, characterized in that: The application relates to a cabinet body, wherein a first chamber and a second chamber are formed in the cabinet body, a battery module is arranged in the first chamber, the battery module is multiple and arranged equidistantly, the battery module comprises a cuboid shell, an installation cavity is formed in the shell, a vertical baffle is arranged in the installation cavity, the vertical baffle is parallel to the width direction of the battery module, is located at the front end of the installation cavity, and divides the installation cavity into a front cavity and a rear cavity, the upper ends of the front cavity and the rear cavity are communicated, a fire-fighting nozzle and a pressure relief valve are arranged on the front end surface of the battery module and communicated with the front cavity, the fire-fighting nozzles on two adjacent battery modules are connected through a first pipeline and form a series connection, a second pipeline is arranged on the fire-fighting nozzle of the lowermost battery module, the second pipeline is used as a main pipeline and communicated with a fire-fighting tank in the second chamber or outside the cabinet body.

2. The high safety liquid-cooled energy storage tank of claim 1, wherein: The fire-fighting nozzle is arranged at the upper left corner or the upper right corner of the front cavity.

3. The high security liquid cooled energy storage cabinet of claim 1, wherein: A top plate is horizontally arranged at the top of the rear cavity, a gap is formed between the top plate and the top surface of the installation cavity, and an upper cavity is formed, air holes are arranged on the top plate and communicated with the rear cavity, the air holes are multiple and arranged in a matrix.

4. The high security liquid cooled energy storage cabinet of claim 3, wherein: The height of the upper cavity is 8mm-20mm.

5. The high security liquid cooled energy storage cabinet of claim 1, wherein: The fire-fighting nozzle comprises a main valve seat fixed on the front end of the battery module, a valve hole is arranged on the rear end surface of the main valve seat, the valve hole is a stepped hole and comprises a large hole and a small hole, a nozzle is arranged at the end of the valve hole, the outlet end of the nozzle is located in the front cavity, a valve core and a first elastic component are arranged in the large hole, the valve core has a forward movement trend to block the communication between the large hole and the small hole; a diaphragm is arranged in the small hole, a puncture needle is arranged at the front end of the small hole, a driving mechanism is arranged at the front end of the main valve seat and connected with the puncture needle and used for driving the puncture needle to pierce the diaphragm; an air inlet and an air outlet are arranged on the top surface and the bottom surface of the main valve seat respectively, the air inlet and the air outlet are coaxially arranged and communicated with the small hole.

6. The high security liquid cooled energy storage cabinet of claim 5, wherein: The driving mechanism is an electromagnet or a gas generator.

7. The high security liquid cooled energy storage cabinet of claim 5, wherein: A valve block is fixed on the inner end of the large hole, center holes are arranged at the two ends of the valve block and form air passages, the end of the valve core can be attached to the tail of the valve block and block the air passages.

8. The high security liquid cooled energy storage cabinet of claim 7, wherein: The diaphragm comprises a circular diaphragm body and a circular sealing ring arranged on the two side edges of the diaphragm body.

9. The high security liquid cooled energy storage cabinet of claim 5, wherein: A concave hole is arranged on the end of the valve core and coaxial with the puncture needle and can accommodate the puncture needle when the puncture needle pierces.

10. The high security liquid cooled energy storage cabinet of claim 8, wherein: The diaphragm body is a copper film.

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