Energy storage cabinet explosion venting device and energy storage cabinet

Abstract

The utility model provides an explosion venting device for an energy storage cabinet. The explosion venting device comprises an opening, a pressure relief door and an elastic mechanism, the opening is formed in the shell of the energy storage cabinet; the pressure relief door is arranged at the opening, the first end of the pressure relief door is installed on the shell, the second end of the pressure relief door can move, and the second end is opposite to the first end; the elastic mechanism comprises a first fixing piece, a second fixing piece and an elastic element; the first fixing piece is fixedly connected with the shell; the second fixing piece is fixedly connected with the pressure relief door; the two ends of the elastic element are connected with the first fixing piece and the second fixing piece respectively, and when the pressure value in the energy storage cabinet is normal, the elastic element is in the stretching state of the first stretching length so that the pressure relief door can be pressed towards and seal the opening. The utility model further provides an energy storage cabinet which comprises the energy storage cabinet explosion venting device and a shell, and the energy storage cabinet explosion venting device is arranged on the shell.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to an explosion relief device for an energy storage cabinet and an energy storage cabinet. Background Art

[0002] Energy storage, especially household energy storage, is developing rapidly, and batteries are the main equipment for energy storage. Batteries are usually placed in the battery compartment of the energy storage cabinet. Since the protection level of the battery compartment of the energy storage cabinet is IP65, it has certain waterproof and dustproof requirements, that is, the sealing performance is good. If the battery explodes, the internal pressure cannot be released in time, which will cause the door panel of the energy storage cabinet to be instantly opened, and even cause casualties.

[0003] The problem with the prior art is that when a special situation such as a deflagration occurs inside the energy storage cabinet, the pressure suddenly increases, causing damage to the main structure of the energy storage cabinet, and the shell of the energy storage cabinet is subjected to an unexpected impact force, causing parts to fly off, thereby causing further secondary damage. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to release the internal pressure in time when the internal pressure of the energy storage cabinet increases suddenly, so as to ensure the integrity of the shell structure of the energy storage cabinet and avoid secondary damage.

[0005] In order to solve the above technical problems, the utility model provides an energy storage cabinet explosion relief device and an energy storage cabinet, the purpose of which is to release the internal pressure in time when the internal pressure of the energy storage cabinet suddenly increases, to ensure the integrity of the shell structure of the energy storage cabinet, and to avoid secondary damage.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an energy storage cabinet explosion relief device, comprising:

[0007] An opening, wherein the opening is located on a shell of the energy storage cabinet;

[0008] A pressure relief door, wherein the pressure relief door is arranged at the opening, a first end of the pressure relief door is mounted on the housing, and a second end of the pressure relief door is movable, wherein the second end is opposite to the first end;

[0009] The elastic mechanism comprises: a first fixing member, a second fixing member and an elastic element; the first fixing member is fixedly connected to the shell; the second fixing member is fixedly connected to the pressure relief door; two ends of the elastic element are respectively connected to the first fixing member and the second fixing member, and when the pressure value in the energy storage cabinet is normal, the elastic element is in a stretched state of a first stretched length to press the pressure relief door toward and close the opening.

[0010] Preferably, when the pressure in the energy storage cabinet increases to a first threshold, the elastic element is stretched to a second stretched length, the second stretched length is greater than the first stretched length, and the second end of the pressure relief door moves away from the opening, so that the pressure in the energy storage cabinet is released from the opening.

[0011] Preferably, the first end of the pressure relief door is rotatably connected to the housing so that the pressure relief door rotates around the first end thereof.

[0012] Preferably, the opening is provided on a vertically arranged wall of the housing of the energy storage cabinet, and the first end of the pressure relief door is the upper end of the pressure relief door in the vertical direction.

[0013] Preferably, the energy storage cabinet explosion relief device further includes: an isolation fence, which is arranged at the opening, fixedly connected to the shell, and located between the pressure relief door and the interior of the shell.

[0014] Preferably, the isolation fence comprises a plurality of barrier rods arranged at intervals.

[0015] Preferably, the first fixing member is arranged at the isolation fence.

[0016] Preferably, the opening comprises a convex edge extending from the shell and arranged at at least a portion of the outer contour, and the pressure relief door is pressed on the convex edge when the pressure value in the energy storage cabinet is normal.

[0017] Preferably, a sealing material is provided at the contact point between the convex edge and the pressure relief door.

[0018] In order to achieve the above object, the utility model also provides an energy storage cabinet, comprising:

[0019] The energy storage cabinet explosion relief device;

[0020] The explosion relief device of the energy storage cabinet is arranged on the shell.

[0021] Compared with the prior art, the utility model provides an energy storage cabinet explosion relief device, comprising: an opening, the opening is located on the shell of the energy storage cabinet; a pressure relief door, the pressure relief door is arranged at the opening, the first end of the pressure relief door is installed on the shell, and the second end of the pressure relief door is movable, wherein the second end is opposite to the first end; an elastic mechanism, the elastic mechanism comprises: a first fixing member, a second fixing member and an elastic element; the first fixing member is fixedly connected to the shell; the second fixing member is fixedly connected to the pressure relief door; the two ends of the elastic element are respectively connected to the first fixing member and the second fixing member, and when the pressure value in the energy storage cabinet is normal, the elastic element is in a stretched state of a first stretched length to press the pressure relief door toward and close the opening. The utility model also provides an energy storage cabinet, comprising: the energy storage cabinet explosion relief device; a shell, the energy storage cabinet explosion relief device is arranged on the shell. Accordingly, compared with the prior art, the technical effect that the utility model can achieve is that when the internal pressure of the energy storage cabinet suddenly increases, the internal pressure is released in time to ensure the integrity of the shell structure of the energy storage cabinet, and to prevent the shell from flying out and injuring people after it ruptures; and, after the pressure is released, the pressure relief door is closed, and the shell of the energy storage cabinet is intact, which can achieve the function of a fire barrier, and the deflagration is controlled inside the shell, which is convenient for the fire extinguishing system located inside the energy storage cabinet to extinguish the fire; the structure is simple, the cost is low, and the safety performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A structural schematic diagram of an embodiment of an energy storage cabinet provided by the utility model is shown.

[0024] Figure 2 The schematic diagram of the structure of an embodiment of the explosion relief device of the energy storage cabinet provided by the utility model is shown as viewed from the outside of the shell.

[0025] Figure 3 for Figure 2 The enlarged schematic diagram at point A in the middle shows the specific structural details of the explosion relief device of the energy storage cabinet.

[0026] Figure 4 The schematic diagram of the structure of an embodiment of the explosion relief device for an energy storage cabinet provided by the utility model is shown as viewed from the inside of the shell to the outside. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] It should be understood that the terms "first", "second", etc. in the claims, specification and drawings of the present application are used to distinguish different objects rather than to describe a specific order. The terms "include" and "comprise" used in the specification and claims of the present application indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0029] See also Figure 1 and Figure 2 As shown, the energy storage cabinet explosion relief device provided by the utility model includes: an opening 10, a pressure relief door 20 and an elastic mechanism 30. The opening 10 is located on the shell 41 of the energy storage cabinet 40. The pressure relief door 20 is arranged at the opening 10, the first end 21 of the pressure relief door is installed on the shell 41, and the second end 22 of the pressure relief door is movable, wherein the second end 22 is opposite to the first end 21. The elastic mechanism 30 presses the pressure relief door 20 toward and closes the opening 10 when the pressure value in the energy storage cabinet 40 is normal. Figure 3 and Figure 4 As shown, the elastic mechanism 30 includes: a first fixing member 31, a second fixing member 32 and an elastic element 33. The elastic element 33 can be a spring or an elastic rubber rope. The spring can be a spiral tension spring made of spring steel or an air spring. The present application does not limit the specific structure of the elastic element 33, as long as it can be in different tensile states. The first fixing member 31 is fixedly connected to the shell 41. The second fixing member 32 is fixedly connected to the second end 22 of the pressure relief door. The two ends of the elastic element 33 are respectively connected to the first fixing member 31 and the second fixing member 32, and the elastic element 33 is in a tensile state of a first tensile length when the pressure value in the energy storage cabinet is normal. The normal pressure value in the energy storage cabinet refers to the situation where the difference between the internal pressure of the shell 41 and the pressure of the pressure relief door 20 subjected to the external atmosphere is less than or equal to the component force perpendicular to the inner wall of the pressure relief door 20 provided by the first tensile length of the elastic element. That is, at this time, the pressure value in the energy storage cabinet is not enough to make the second end 22 of the pressure relief door 20 move in a direction away from the opening 10. See. Figure 3 and Figure 4 As shown, two sets of first fixing members 31, second fixing members 32 and elastic members 33 are provided. The number is not limited, and two sets of elastic mechanisms 30 are symmetrically provided to better balance the corresponding pulling forces.

[0030] Figure 1 , Figure 2 , Figure 3 and Figure 4 All of them show the situation when the pressure relief door 20 is open. When the pressure in the energy storage cabinet 40 increases to a first threshold value, such as when the pressure difference between the internal pressure of the shell 41 and the pressure of the pressure relief door 20 under the external atmosphere is greater than the component force perpendicular to the inner wall of the pressure relief door 20 provided by the first stretching length of the elastic element, that is, at this time, the pressure value in the energy storage cabinet is sufficient to make the second end 22 of the pressure relief door 20 move in a direction away from the opening 10. The elastic element 33 is further stretched, such as when the elastic element 33 is stretched to a second stretching length, the second stretching length is greater than the first stretching length, the second end 22 of the pressure relief door 20 moves in a direction away from the opening 10, and the pressure relief door 20 is opened, so that the pressure in the energy storage cabinet 40 is released from the opening 10. After the pressure is released, the pressure value in the energy storage cabinet returns to a normal state, and the elastic element 33 pulls the pressure relief door 22 back to the state of pressing and closing the opening 10, which is conducive to isolating the interior of the shell 41 from the external space and facilitating the fire extinguishing device located inside the shell.

[0031] In one embodiment, the first end 21 of the pressure relief door 20 is rotatably connected to the housing 41, and the second end 22 of the pressure relief door 20 rotates around the first end. For example, the first end 21 of the pressure relief door is connected to the housing 41 through a hinge, and the pressure relief door 20 rotates around the rotation axis of the hinge. Accordingly, the second end 22 of the pressure relief door 20 can rotate around the first end, the pressure relief door 20 can be opened, the opening 10 can be at least partially opened to release pressure, and the pressure relief door 20 can be pressed toward the opening 10 to close the opening 10, that is, the second end 22 of the pressure relief door can move.

[0032] When the energy storage cabinet is placed in a normal position, the opening 10 is arranged on a vertically arranged wall 42 of the housing 41 of the energy storage cabinet, and the first end 21 of the pressure relief door is the upper end of the pressure relief door 20 in the vertical direction. Accordingly, when water is sprayed, water can flow down along the opening, and the first end of the rotation connection has a certain shielding function, which can improve the waterproof performance.

[0033] Of course, the first end 21 of the pressure relief door can also be the left end of the pressure relief door 20 in the vertical direction, so that the right end of the pressure relief door 20 can rotate around the left end, or the first end 21 of the pressure relief door can be the right end of the pressure relief door 20 in the vertical direction, so that the left end of the pressure relief door 20 can rotate around the right end.

[0034] See also Figure 3 and Figure 4 As shown, a separation fence 50 is provided at the opening 10. The separation fence 50 is fixedly connected to the housing 41, and the separation fence 50 is located between the pressure relief door 20 and the interior of the housing 41.

[0035] See also Figure 3 and Figure 4 As shown, the isolation fence 50 includes a plurality of blocking rods 51 arranged at intervals. Accordingly, the gaps between the blocking rods 51 are used to release pressure, and the blocking rods 51 can prevent the parts that fall off from the housing 41 from flying out of the housing 41 and causing secondary damage.

[0036] The first fixing member 31 is disposed at the isolation fence 50. Figure 4 As shown, the first fixing member 31 is disposed on the side of the isolation grille 50 close to the inside of the housing 41, the elastic element 33 passes through the gap between the blocking rods 51, and one end of the elastic element 33 is hooked on the first fixing member 31 (that is, a fixing buckle at this time). The second fixing member 32 is located on the side of the pressure relief door 20 facing the inside of the housing 41. Specifically, the first fixing member 31 is located on the end of the isolation grille 50 opposite to the first end 21 of the pressure relief door, as shown in FIG. Figure 4 As shown, the first fixing member 31 is located at the lower part of the isolation grille 50 in the vertical direction.

[0037] Of course, the first fixing member 31 may not be arranged at the isolation grille 50 , but may be arranged at other positions of the housing 41 .

[0038] The first fixing member 31 and the second fixing member 32 are configured as the fixing buckle of the embodiment shown in the figure, which can be easily installed. Of course, the first fixing member 31 and the second fixing member 32 may not be the fixing buckle shown in the figure, and they may be any structure that can be fixedly connected with the elastic element 33.

[0039] See also Figure 3 As shown, the opening 10 includes a convex edge 11 extending from the housing 41 and arranged at at least part of the outer contour, and when the pressure value in the energy storage cabinet is normal, the pressure relief door 20 presses on the convex edge 11. Accordingly, the convex edge 11 can play a role in blocking water.

[0040] See also Figure 3 and Figure 4 As shown, a sealing material 70 is provided at the contact point between the flange 11 and the pressure relief door 20. The sealing material 70 can be provided on the surface of the pressure relief door 20 facing the flange 11; it can also be provided on the flange 11; it can also be provided on both the pressure relief door 20 and the flange 11. Accordingly, combined with the pre-compression force of the tension provided by the elastic mechanism 30, the sealing performance of the explosion relief device of the energy storage cabinet can be improved, and the waterproof and dustproof levels can be improved.

[0041] See also Figure 1 As shown, the utility model further provides an energy storage cabinet, comprising: an energy storage cabinet explosion relief device 60 and a housing 41. The energy storage cabinet explosion relief device 60 is arranged on the housing 41.

[0042] The above is the specific structure and connection method of the energy storage cabinet explosion relief device and energy storage cabinet provided by the utility model. The technical effects of the utility model are: first, when a battery explosion occurs, the internal pressure of the energy storage cabinet is quickly released to prevent damage to the shell structure, prevent the explosion from spreading, and avoid the broken parts of the energy storage cabinet (such as the fragments formed after the walls of the shell are exploded and disintegrated) from splashing and injuring people; second, after the internal pressure of the energy storage cabinet is released, the small door returns to a closed state under the tension of the spring, which helps the internal fire extinguishing device of the energy storage cabinet to extinguish the fire; third, the structure is simple, the cost is low, and it helps to improve the safety of the energy storage system.

[0043] The above specific embodiments and accompanying drawings are only used to illustrate the technical solutions and technical effects of the utility model, and are not used to limit the utility model. Any person skilled in the art who is familiar with this technology can modify or change the above embodiments within the scope of the claims without violating the technical principles and spirit of the utility model, and all of them belong to the scope of protection of the utility model.

Claims

1. An explosion relief device for an energy storage cabinet, characterized in that: include: An opening (10), wherein the opening (10) is located on a housing (41) of the energy storage cabinet; a pressure relief door (20), the pressure relief door (20) being arranged at the opening (10), the first end (21) of the pressure relief door (20) being mounted on the housing (41), the second end (22) of the pressure relief door (20) being movable, wherein the second end (22) is opposite to the first end (21); An elastic mechanism (30), the elastic mechanism (30) comprising: a first fixing member (31), a second fixing member (32) and an elastic element (33); the first fixing member (31) is fixedly connected to the housing (41); the second fixing member (32) is fixedly connected to the pressure relief door (20); two ends of the elastic element (33) are respectively connected to the first fixing member (31) and the second fixing member (32); when the pressure value in the energy storage cabinet (40) is normal, the elastic element (33) is in a stretched state of a first stretched length, so as to press the pressure relief door (20) toward and close the opening (10).

2. The explosion relief device for energy storage cabinet according to claim 1, characterized in that: When the pressure in the energy storage cabinet increases to a first threshold value, the elastic element (33) is stretched to a second stretched length, the second stretched length is greater than the first stretched length, and the second end of the pressure relief door (20) moves in a direction away from the opening (10), so that the pressure in the energy storage cabinet (40) is released from the opening (10).

3. The explosion relief device for energy storage cabinet according to claim 1, characterized in that: The first end (21) of the pressure relief door (20) is rotatably connected to the housing (41), so that the second end of the pressure relief door (20) can rotate around the first end (21) thereof.

4. The explosion relief device for energy storage cabinet according to claim 1, characterized in that: The opening (10) is arranged on a vertically arranged wall (42) of a shell (41) of the energy storage cabinet, and the first end (21) of the pressure relief door (20) is the upper end of the pressure relief door (20) in the vertical direction.

5. The explosion relief device for energy storage cabinet according to claim 1, characterized in that: Also includes: An isolation grille (50), the isolation grille (50) is arranged at the opening (10), the isolation grille (50) is fixedly connected to the shell (41), and the isolation grille (50) is located between the pressure relief door (20) and the interior of the shell (41).

6. The explosion relief device for energy storage cabinet according to claim 5, characterized in that: The isolation fence (50) comprises a plurality of blocking rods (51) arranged at intervals.

7. The explosion relief device for energy storage cabinet according to claim 5, characterized in that: The first fixing member (31) is arranged at the isolation grid (50).

8. The explosion relief device for energy storage cabinet according to claim 1, characterized in that: The opening (10) comprises a convex edge (11) extending from the shell (41) and arranged at at least part of the outer contour, and the pressure relief door (20) presses on the convex edge (11) when the pressure value in the energy storage cabinet is normal.

9. The explosion relief device for energy storage cabinet according to claim 8, characterized in that: A sealing material (70) is provided at the contact point between the convex edge (11) and the pressure relief door (20).

10. An energy storage cabinet comprising the energy storage cabinet explosion relief device according to any one of claims 1 to 9, characterized in that: Also includes: A shell (41), wherein the explosion relief device of the energy storage cabinet is arranged on the shell (41).

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