Energy storage cabinet explosion venting device

Abstract

The utility model discloses an energy storage cabinet explosion venting device, including energy storage cabinet, be provided with the explosion vent on energy storage cabinet, be provided with the explosion vent plate for plugging the explosion vent on the explosion vent, be provided with at least one elastic limiting component on the explosion vent plate, the side of explosion vent is provided with the limiting slot cooperation with elastic limiting component, and the explosion vent plate can restore to the position of plugging the explosion vent by self -gravity. This explosion venting device can open bidirectionally through the pressure difference of cabinet inside and outside, and reset automatically by the self -gravity of explosion vent plate, simple structure, when opening, do not destroy the structure, do not exist the risk of splashing, and can be reused, and the explosion vent plate can be closed automatically by self -gravity, avoid the occurrence of secondary disaster.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage cabinet technology, specifically an explosion relief device for energy storage cabinets. Background Technology

[0002] In the field of energy storage system safety protection, explosion venting devices are key components for suppressing the spread of thermal runaway within the battery cabinet, and their reliability directly affects the safe operation of energy storage equipment. Currently, the industry generally adopts explosion venting plate structures as pressure relief solutions, which are mainly divided into two categories based on the driving method: active and passive.

[0003] For active explosion relief devices, a pressure sensor network is typically installed inside the cabinet. This network monitors pressure data in real time and triggers a motor-driven mechanism to open the explosion relief panel. While this approach achieves precise trigger control, it has significant drawbacks: First, the integration of multiple sensors and the power mechanism increases overall structural complexity and the probability of failure. Second, the response delay and circuit failure risk of the electromechanical linkage system may cause a lag in the explosion relief action, potentially leading to a secondary explosion in extreme cases.

[0004] In passive explosion venting technology, the mechanical stress generated by the pressure difference between the inside and outside of the explosion venting plate is mainly used to destroy the restraining components such as fixing bolts or shear washers. Although this type of solution has the advantage of simple structure, it has three key technical bottlenecks: First, the dispersion of the yield strength of the fixing components makes it difficult to accurately control the actual opening pressure value; second, high-speed splashes are easily generated during the disintegration process, posing a safety hazard to surrounding equipment and personnel; third, the inherent characteristic of one-time destruction makes the device lose its reusability, significantly increasing operation and maintenance costs. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing an explosion relief device for energy storage cabinets. This device can be opened bidirectionally by the pressure difference between the inside and outside of the cabinet and automatically reset by the weight of the explosion relief plate itself. It has a simple structure, does not damage the structure when opened, poses no risk of flying debris, and is reusable. The explosion relief plate can automatically close by its own weight, thus preventing secondary disasters.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an explosion venting device for an energy storage cabinet, comprising an energy storage cabinet, an explosion vent provided on the energy storage cabinet, an explosion vent plate rotatably disposed on the explosion vent for sealing the explosion vent, at least one elastic limiting component provided on the explosion vent plate, a limiting groove cooperating with the elastic limiting component provided on the side of the explosion vent, and the explosion vent plate being able to return to the position of sealing the explosion vent by its own gravity.

[0007] In the above technical solution, preferably, the explosion relief plate is provided with a mounting hole with a side opening, and the elastic limiting component is provided in the mounting hole. The elastic limiting component includes a spring located inside the mounting hole and a movable limiting body on the outside. The movable limiting body is driven by the elastic force of the spring to be inserted into the limiting groove.

[0008] In the above technical solution, preferably, the outer end of the movable limiting body is spherical.

[0009] In the above technical solution, preferably, the end of the mounting hole is provided with a limiting ring for preventing the movable limiting body from leaving the mounting hole.

[0010] In the above technical solution, preferably, the explosion vent is located on the side of the energy storage cabinet, the explosion vent plate is provided with a rotating shaft on its side, and the explosion vent is provided with a rotating slot that cooperates with the rotating shaft on its side. The rotating shaft is inserted into the rotating slot to make the explosion vent plate rotate and connect to the explosion vent.

[0011] In the above technical solution, preferably, the explosion vent is located at the top of the energy storage cabinet, the explosion vent plate has a rotating shaft on its side, and the explosion vent has a rotating slot that mates with the rotating shaft on its side. The rotating shaft is inserted into the rotating slot to allow the explosion vent plate to rotate and connect to the explosion vent.

[0012] In the above technical solution, preferably, an elastic mechanism is provided between the energy storage cabinet and the explosion relief plate, and the explosion relief plate can be driven by its own gravity and the elastic mechanism to return to the position of sealing the explosion relief port.

[0013] In the above technical solution, preferably, the elastic mechanism includes a torsion spring sleeved on the rotating shaft, and the two ends of the torsion spring are fixedly connected to the explosion relief plate and the side wall of the explosion relief port, respectively.

[0014] Compared with existing technologies, this invention has the following advantages: When the internal pressure of the cabinet is too high, the elastic limiting component of this explosion relief device can be compressed and disengaged from the limiting groove. The explosion relief plate can be opened outward by the impact of internal pressure. After the explosion pressure is released, the explosion relief plate falls and closes due to its own weight, preventing external air from entering the cabinet and causing reignition and preventing internal flames from overflowing. When a fire breaks out inside the cabinet and external fire-fighting water needs to be sprayed into the cabinet, the water pressure can be used to open the explosion relief plate inward, allowing fire-fighting water to enter the cabinet. The explosion relief plate can open bidirectionally through the pressure difference between the inside and outside of the cabinet and automatically reset due to its own weight. The structure is simple, does not damage the structure when opening, has no risk of splashing, and is reusable. The explosion relief plate can automatically close due to its own weight, avoiding secondary disasters. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0016] Figure 2 This is an exploded structural diagram of Embodiment 1 of the present invention.

[0017] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0018] Figure 4 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0019] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0020] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0021] The components represented by the reference numerals in the attached drawings are as follows: 1. Energy storage cabinet; 2. Explosion vent; 3. Explosion vent plate; 4. Elastic limit assembly; 41. Spring; 42. Movable limit body; 5. Limit groove; 6. Mounting hole; 61. Limit ring; 7. Rotating shaft; 8. Rotating slot; 9. Elastic mechanism. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1 to 5 Example 1: An explosion venting device for an energy storage cabinet includes an energy storage cabinet 1. An explosion vent 2 is provided on the energy storage cabinet 1. An explosion vent plate 3 for sealing the explosion vent 2 is rotatably provided on the explosion vent 2. The explosion vent 2 is located on the side of the energy storage cabinet 1. As a specific rotatable connection method, a rotating shaft 7 is provided on the side of the explosion vent plate 3. A rotating slot 8 that cooperates with the rotating shaft 7 is provided on the side of the explosion vent 2. The rotating shaft 7 is inserted into the rotating slot 8 so that the explosion vent plate 3 is rotatably connected to the explosion vent 2.

[0023] The explosion relief plate 3 is equipped with at least one elastic limiting component 4, and the side of the explosion relief port 2 is provided with a limiting groove 5 that cooperates with the elastic limiting component 4. The explosion relief plate 3 can return to the position of sealing the explosion relief port 2 by its own gravity. The number and elastic force of the elastic limiting components 4 together determine the opening pressure of the explosion relief plate 3, which can be set according to the required opening pressure of the explosion relief plate 3. An appropriate pressure value can achieve windproof, rainproof, snowproof and prevent accidental opening by human intervention. In this embodiment, an elastic limiting component 4 is provided on each side of the explosion relief plate 3.

[0024] The rotating shaft 7 is installed on both sides of the explosion relief plate 3, and can be located anywhere from the edge to the center of the explosion relief plate 3. Positioning the rotating shaft 7 closer to the center reduces the safe opening distance of the explosion relief plate 3. The two rotating shafts 7 are coaxial, and their specific positions can be adjusted according to the outward extension distance of the explosion relief plate 3 when it is open. The explosion relief plate 3 can rotate around the rotating shaft 7 to open. Normally, the explosion relief plate 3 is fixed by the rotating shaft 7 and the elastic limiting component 4. When one side of the explosion relief plate 3 is subjected to gradually increasing pressure and moves, it causes the elastic limiting component 4 to disengage from the limiting groove 5. The elastic limiting component 4 retracts into the explosion relief plate 3, temporarily disabling its limiting and fixing function, allowing the explosion relief plate 3 to open and release the explosion pressure, thus achieving the explosion relief function. After the explosion relief plate 3 is opened, the elastic limiting component 4 returns to its original position, ensuring that its limiting and fixing function can be reused. After the explosion is relieved, the explosion relief plate 3 can automatically close under its own weight, preventing secondary disasters.

[0025] The explosion relief plate 3 can be opened in both directions. When the internal pressure of the energy storage cabinet 1 is too high and explosion relief is needed, the explosion relief plate 3 can be rotated outward to open. When a fire breaks out inside the energy storage cabinet 1 and external fire water needs to be sprayed into the energy storage cabinet 1, the water pressure can be used to open the explosion relief plate 3 inward to allow fire water to enter the energy storage cabinet 1.

[0026] Furthermore, the outer end of the movable limiting body 42 is spherical. The spherical movable limiting body 42, in conjunction with the limiting groove 5, allows for better guidance of the movable limiting body 42 towards the mounting hole 6 under the action of lateral force on the explosion relief plate 3. In this embodiment, the movable limiting body 42 is spherical.

[0027] Furthermore, a limiting ring 61 is provided at the end of the mounting hole 6 to prevent the movable limiting body 42 from disengaging from the mounting hole 6. In this embodiment, the limiting ring 61 is located on the open side of the sleeve.

[0028] Furthermore, an elastic mechanism 9 is provided between the energy storage cabinet 1 and the explosion relief plate 3. The explosion relief plate 3 can be driven by its own weight and the elastic mechanism 9 to return to the position of sealing the explosion relief port 2. The elastic mechanism 9 is a torsion spring sleeved on the rotating shaft 7, with both ends of the torsion spring fixedly connected to the side walls of the explosion relief plate 3 and the explosion relief port 2, respectively. It will be readily understood by those skilled in the art that in other embodiments, the elastic mechanism 9 can also be other existing elastic mechanisms, as long as the equilibrium position of its elastic force can enable the explosion relief plate 3 to return to the position of sealing the explosion relief port 2, the technical objective of this utility model can be achieved.

[0029] See Figure 6 Example 2 differs from Example 1 only in that the explosion vent 2 is located on the top of the energy storage cabinet 1, and the rest of the structure is the same as in Example 1.

[0030] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An explosion venting device for an energy storage cabinet, comprising an energy storage cabinet (1), wherein the energy storage cabinet (1) is provided with an explosion vent (2), and an explosion vent plate (3) for sealing the explosion vent (2) is rotatably disposed on the explosion vent (2), characterized in that: At least one elastic limiting component (4) is provided on the explosion relief plate (3), and a limiting groove (5) that cooperates with the elastic limiting component (4) is provided on the side of the explosion relief port (2). The explosion relief plate (3) can be restored to the position of blocking the explosion relief port (2) by its own gravity.

2. The explosion venting device for an energy storage cabinet as described in claim 1, characterized in that: The explosion relief plate (3) is provided with a mounting hole (6) with a side opening. The elastic limiting component (4) is provided in the mounting hole (6). The elastic limiting component (4) includes a spring (41) located inside the mounting hole (6) and a movable limiting body (42) on the outside. The movable limiting body (42) is driven by the elastic force of the spring (41) to be inserted into the limiting groove (5).

3. The explosion venting device for an energy storage cabinet as described in claim 2, characterized in that: The outer end of the movable limiting body (42) is spherical.

4. The explosion venting device for an energy storage cabinet as described in claim 3, characterized in that: The mounting hole (6) is provided with a limiting ring (61) at the end for preventing the movable limiting body (42) from leaving the mounting hole (6).

5. The explosion venting device for an energy storage cabinet as described in claim 1, characterized in that: The explosion vent (2) is located on the side or top of the energy storage cabinet (1).

6. The explosion venting device for an energy storage cabinet as described in claim 1, characterized in that: The explosion relief plate (3) is provided with a rotating shaft (7) on its side, and the explosion relief port (2) is provided with a rotating slot (8) that cooperates with the rotating shaft (7) on its side. The rotating shaft (7) is inserted into the rotating slot (8) so that the explosion relief plate (3) is rotatably connected to the explosion relief port (2).

7. The explosion venting device for an energy storage cabinet as described in claim 6, characterized in that: An elastic mechanism (9) is provided between the energy storage cabinet (1) and the explosion relief plate (3). The explosion relief plate (3) can be driven by its own weight and the elastic mechanism (9) to return to the position of blocking the explosion relief port (2).

8. The explosion venting device for an energy storage cabinet as described in claim 7, characterized in that: The elastic mechanism (9) includes a torsion spring sleeved on the rotating shaft (7), and the two ends of the torsion spring are fixedly connected to the side walls of the explosion relief plate (3) and the explosion relief port (2), respectively.

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