High-sensitivity monitoring and rapid centralized discharging device for dangerous light gas in energy storage bin

Abstract

The utility model relates to the technical field of energy storage bins, in particular to a high-sensitivity monitoring and rapid centralized discharging device for dangerous light gas in an energy storage bin. The energy storage bin comprises an energy storage box and a bin top arranged at the top of the energy storage box. The bin body is arranged to be of a protruding structure facilitating gas gathering. A plurality of sensors for detecting gas concentration and an exhaust outlet facilitating exhaust are arranged along the top of the bin body; gas is gathered in the bin body, the concentration of the gas is detected through the sensor, and the gas is rapidly exhausted outwards through the exhaust outlet. A special flow field structure is used, the flowing speed and direction of gas are changed, the gas rapidly gathers towards the top of the bin, the concentration of the gas on the inner side of the top of the bin is rapidly accumulated, the gas sensor can rapidly detect that when the concentration of the gas in the bin is low and the gas is not detected, the gas is discharged through convection of fan blades of the fan; when the concentration of gas in the bin is detected to exceed the standard, the strong exhaust system is started at the same time, rapid exhaust is achieved, thermal runaway of the battery is avoided, and safety is ensured.

Description

A highly sensitive monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo. Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a highly sensitive monitoring and rapid centralized emission device for hazardous light gases in energy storage. Background Technology

[0002] With the rapid development of energy storage, users have placed higher demands on the safety monitoring of energy storage facilities. The national standard GB / T 42288-2022, which officially came into effect on July 1, 2023, emphasizes that "combustible gas detectors should be installed in the battery room / facility, and each battery module can be individually equipped with a detector." Meanwhile, numerous research reports both domestically and internationally have also pointed out that in the early stages of battery thermal runaway, some key characteristic gases such as H2 (hydrogen), CO (carbon monoxide), CO2 (carbon dioxide), C2H4 (ethylene), and CH4 (methane) are released. If these characteristic gases are monitored more quickly and accurately, and their emission is accelerated, the occurrence of battery thermal runaway can be prevented in advance.

[0003] Current common solutions involve adding a ventilation hole or forced exhaust system to the flat roof of the energy storage tank, using a single gas sensor (such as a hydrogen sensor) in conjunction with a mechanical ventilation system for gas detection and emission. The specific process is as follows: after the sensor detects that the gas concentration exceeds the standard, the ventilation system is activated to expel the gas. Some solutions use sensors in fixed positions and top exhaust devices. The drawback of existing technologies is the unreasonable design of the top exhaust system in the energy storage tank. The flat roof design of the energy storage tank is affected by gas diffusion, resulting in slow and irregular gas diffusion, preventing natural accumulation. Uneven gas diffusion leads to uneven sensor monitoring, delayed response of the exhaust system, and an inability to quickly reduce gas concentration. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a highly sensitive monitoring and rapid centralized emission device for hazardous light gases in energy storage warehouses.

[0005] The technical solution of this utility model is a highly sensitive monitoring and rapid centralized emission device for hazardous light gases in an energy storage tank, including an energy storage tank and a tank top installed on top of the energy storage tank.

[0006] The chamber is designed with a raised structure to facilitate gas accumulation; several sensors for detecting gas concentration and exhaust vents for easy exhaust are installed along the top of the chamber.

[0007] Gas accumulates inside the chamber, its concentration is detected by sensors, and it is quickly discharged outwards through the exhaust vent.

[0008] Preferably, the chamber is configured as a four-sloped roof structure with a central bulge, and the whole is a four-sided pyramid shape; the gas flows naturally and gathers towards the middle of the top.

[0009] Preferably, exhaust vents are installed at the center of the four-slope top and the center point of the long slope.

[0010] Preferably, a centrifugal fan linked to the sensor is installed at the exhaust vent.

[0011] Preferably, a sensor for detecting the gas concentration inside the chamber is installed at the midpoint of the corner line at the top of the chamber; the sensor is a photoelectric smoke sensor.

[0012] Preferably, the chamber is a semi-cylindrical structure with a raised top, allowing gas to flow naturally and gather towards the top.

[0013] Preferably, several exhaust vents are installed at equal intervals on the top of the silo.

[0014] Preferably, a centrifugal fan linked to the sensor is installed at the exhaust vent.

[0015] Preferably, several sensors for detecting the gas concentration inside the chamber are installed at equal intervals along the top of the chamber; the sensors are staggered with the exhaust vents.

[0016] Preferably, the sensor is fixedly installed to the chamber body by snap-fit.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] 1. High monitoring sensitivity: The flow field structure causes the gas to accumulate regularly towards the top of the chamber, accelerating the gas concentration and making it easy to monitor.

[0019] 2. Accelerate gas flow velocity: Special flow field structures can change the direction of gas flow and accelerate gas flow velocity.

[0020] 3. Full-coverage monitoring with multiple sensors evenly distributed can speed up the detection of dangerous and harmful gases, improve safety, and is especially suitable for battery compartments with complex structures.

[0021] 4. The structure is highly adaptable, with the powerful exhaust system integrated with the four-sloped roof design, saving space and improving airflow guidance efficiency. Attached Figure Description

[0022] Figure 1 is one of the structural schematic diagrams of the energy storage bin in an embodiment of this utility model;

[0023] Figure 2 is a schematic diagram of the structure of the silo top in an embodiment of this utility model;

[0024] Figure 3 is a top view of the structure of the silo top in an embodiment of this utility model;

[0025] Figure 4 is an isometric schematic diagram of the flow of lightweight combustible gas in the energy storage box in an embodiment of this utility model.

[0026] Figure 5 is a schematic diagram of the flow path of lightweight combustible gas in the energy storage box in an embodiment of this utility model.

[0027] Figure 6 is a second structural schematic diagram of the energy storage bin in an embodiment of this utility model;

[0028] Figure 7 is a schematic diagram of the structure of the silo top in an embodiment of this utility model.

[0029] Figure 8 is a top view of the structure of the silo top in an embodiment of this utility model;

[0030] Figure 9 is an isometric view of the flow of lightweight combustible gas in the energy storage box in an embodiment of this utility model.

[0031] Attached reference numerals: 1. Energy storage box; 2. Top of the storage box; 3. Sensor; 4. Exhaust vent; 5. Centrifugal fan. Detailed Implementation

[0032] Example 1

[0033] As shown in Figure 1, the present invention proposes a high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage tank, which includes an energy storage tank 1 and a tank top 2 installed on top of the energy storage tank 1.

[0034] The chamber 2 is designed with a raised structure to facilitate gas accumulation; several gas concentration sensors 3 and exhaust vents 4 are installed along the top of the chamber 2 for easy exhaust.

[0035] The gas accumulates inside the chamber 2, and the gas concentration is detected by sensor 3 and then quickly discharged to the outside through the exhaust port 4.

[0036] In this embodiment, as shown in Figures 1-2, the chamber 2 is configured as a four-sloped roof structure with a central bulge, and is generally a four-sided pyramid shape; the gas flows naturally and gathers towards the center of the top; as shown in Figure 3, exhaust vents 4 are installed at the center of the four-sloped roof and the center point of the long slope, and centrifugal fans 5 linked to sensors 3 are installed at the exhaust vents 4. Sensors 3 for detecting the gas concentration inside the chamber 2 are set at the middle position of the corner line at the top of the chamber 2; the sensor 3 is a photoelectric smoke sensor (sensitivity 0.1% hydrogen volume concentration), and its shell is cylindrical with a diameter of 50mm. The sensor 3 is connected to the controller via an RS485 bus to transmit concentration data in real time. When the detected concentration exceeds the threshold, the controller controls the centrifugal fan 5 to turn on, improving the exhaust efficiency.

[0037] In this embodiment, as shown in Figures 4-5, the four-sloped roof's seamless upward channel, with a flow field structure different from the original, accelerates the flow and accumulation of gas towards the top of the roof. Three forced ventilation systems are evenly arranged at the top of the roof and along the waistline. When the gas concentration inside the chamber is low and undetected, the gas is expelled through convection by the fan blades. When the gas concentration is detected as exceeding the standard, the forced ventilation system activates simultaneously for rapid exhaust, preventing thermal runaway of the battery and ensuring safety. The special flow field structure alters the gas flow speed and direction, causing the gas to rapidly accumulate towards the roof ridgeline, allowing for rapid detection by the gas sensor. Users can set alarm thresholds for the controller (Level 1: 0.3% warning; Level 2: 0.5% activation of forced ventilation). The system automatically switches between natural ventilation and forced ventilation modes, and users can view the status in real time through the control panel.

[0038] Example 2

[0039] As shown in Figure 6, the present invention proposes a highly sensitive monitoring and rapid centralized emission device for hazardous light gases in an energy storage chamber, comprising an energy storage box 1 and a chamber top 2 disposed on the top of the energy storage box 1; the chamber body 2 is configured as a raised structure to facilitate gas accumulation; several sensors 3 for detecting gas concentration and exhaust vents 4 for convenient exhaust are disposed along the top of the chamber body 2; the gas accumulates in the chamber body 2, the gas concentration is detected by the sensors 3, and the gas is rapidly discharged to the outside through the exhaust vents 4.

[0040] As shown in Figures 6-7, unlike Embodiment 1, in this embodiment, the chamber 2 is a semi-cylindrical structure with a raised top, allowing gas to flow naturally and gather towards the top. Several exhaust vents 4 are evenly spaced at the top of the chamber 2. Centrifugal fans 5, linked to sensors 3, are installed at the exhaust vents 4. As shown in Figure 8, several sensors 3 for detecting the gas concentration inside the chamber 2 are evenly spaced along the top of the chamber 2; the sensors 3 and exhaust vents 4 are staggered. The sensors 3 are fixedly installed to the chamber 2 using snap-fit ​​fasteners.

[0041] In this embodiment, when the gas concentration inside the chamber is low and undetected, the gas is expelled through convection by the fan blades. When the gas concentration is detected to exceed the standard, the forced exhaust system is activated simultaneously for rapid discharge, preventing thermal runaway of the battery and ensuring safety. The special flow field structure alters the gas flow speed and direction, causing the gas to rapidly accumulate at the curved top of the chamber, resulting in rapid concentration buildup at the top, which can be quickly detected by the gas sensor. Users can set alarm thresholds for the controller (Level 1: 0.3% warning; Level 2: 0.5% activation of forced exhaust). The system automatically switches between natural ventilation and forced exhaust modes, and users can view the status in real time via the control panel. An optional centrifugal fan with a power of 1.5KW and a maximum air volume of 400m³ / h is available. 3 / h, net diameter 100mm, used for rapid exhaust.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A highly sensitive monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo, characterized in that, It includes an energy storage box (1) and a chamber (2) set on top of the energy storage box (1); the chamber (2) is set as a raised structure to facilitate gas accumulation; several sensors (3) for detecting gas concentration and exhaust vents (4) for facilitating exhaust are set along the top of the chamber (2); the gas accumulates in the chamber (2), the gas concentration is detected by the sensors (3), and it is quickly discharged to the outside through the exhaust vents (4).

2. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 1, characterized in that, The chamber (2) is designed with a four-sloped roof structure with a raised center, and is a four-sided pyramid shape; the gas flows naturally and gathers towards the middle of the top.

3. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 2, characterized in that, Install exhaust vents at the center of the four-slope top and the center of the long slope (4).

4. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 3, characterized in that, A centrifugal fan (5) that is linked to the sensor (3) is installed at the exhaust vent (4).

5. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 2, characterized in that, A sensor (3) for detecting the gas concentration inside the chamber (2) is installed at the middle position of the top corner line of the chamber (2); the sensor is a photoelectric smoke sensor.

6. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 1, characterized in that, The chamber (2) is a semi-cylindrical structure with a raised top, allowing gas to flow naturally and gather towards the top.

7. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 6, characterized in that, Several exhaust vents (4) are set at equal intervals on the top of the silo (2).

8. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 6, characterized in that, A centrifugal fan (5) that is linked to the sensor (3) is installed at the exhaust vent (4).

9. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 6, characterized in that, Several sensors (3) for detecting the gas concentration inside the chamber (2) are arranged at equal intervals along the top of the chamber (2); the sensors (3) are arranged alternately with the exhaust vents (4).

10. The high-sensitivity monitoring and rapid centralized emission device for hazardous light gases in an energy storage silo according to claim 4 or 6, characterized in that, The sensor (3) is fixedly installed to the chamber (2) by a snap fastener.

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