Explosion venting structure and energy storage equipment

Abstract

The embodiment of the utility model relates to the technical field of explosion venting technology, and discloses an explosion venting structure and energy storage equipment, the explosion venting structure comprises a plate body and an explosion venting assembly, the plate body is provided with an explosion venting channel, the explosion venting assembly comprises a fixing frame, an explosion venting plate, a first connecting structure and a second connecting structure, the fixing frame is fixed on the plate body through the first connecting structure, and the explosion venting plate is fixed on the plate body through the second connecting structure. The fixing frame partially extends into the explosion venting channel, the explosion venting plate is fixed to the portion, extending into the explosion venting channel, of the fixing frame through a second connecting structure, and the explosion venting channel is jointly sealed by the fixing frame and the explosion venting plate. Through the mode, the explosion venting channel can be opened in two directions, when the explosion venting channel is matched with a box body structure and a battery for use, the explosion venting channel can be opened from inside to outside when the battery is in thermal runaway and exceeds preset pressure, explosion venting is conducted in time, and explosion is avoided; and when the battery thermal runaway does not exceed the preset pressure, the explosion venting channel can be opened from outside to inside to inject water so as to shorten the emergency disposal time and reduce the explosion probability.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion relief, and in particular to an explosion relief structure and energy storage equipment. Background Art

[0002] Energy storage equipment refers to equipment used to store energy so that it can be released when needed (for example, energy storage cabinets or energy storage boxes). Energy storage equipment is usually equipped with batteries for storing electrical energy (for example, lithium-ion batteries, lead-acid batteries, or sodium-sulfur batteries, etc.). Since energy storage equipment is equipped with batteries, when the batteries thermally run away, the batteries will produce flammable gases, which may even cause the energy storage equipment to explode. Therefore, in order to avoid harm to personnel safety, energy storage equipment is usually also equipped with explosion-proof structures (for example, explosion-proof doors or explosion-proof windows) to reduce the pressure of the battery in the thermal runaway state, thereby reducing the probability of the energy storage equipment exploding and releasing pressure waves and thermal radiation.

[0003] During the implementation of the embodiment of the utility model, the inventor of the utility model found that: at present, the explosion relief structure of the energy storage device can only realize one-way opening, and cannot realize two-way opening, that is, the explosion relief structure of the energy storage device can only be driven by the internal pressure to automatically open and release pressure from the inside of the device to the outside of the device when the internal pressure of the device exceeds the preset value. When the internal pressure of the device does not exceed the preset value, for example, when the battery has thermal runaway and there is insufficient oxygen or no ignition source inside the energy storage device, the energy storage device may only continue to smoke and will not explode, that is, the explosion relief structure will not open automatically. For the explosion relief structure of the energy storage device that can only realize one-way opening, firefighters cannot use external force components such as fire high-pressure water guns or rods to drive the explosion relief structure to open from the outside of the device to the inside of the device and form an opening for injecting water from the outside of the device to the inside of the device to quickly control the continuous smoking of the energy storage device, resulting in firefighters only having to wait for the battery thermal runaway to end automatically before forcibly breaking and dismantling, resulting in extended emergency disposal time and increased probability of explosion. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide an explosion relief structure and an energy storage device, which can realize two-way opening of the explosion relief channel.

[0005] To solve the above technical problems, a technical solution adopted in an embodiment of the utility model is: an explosion-proof structure, including a plate body and an explosion-proof assembly, the plate body is provided with an explosion-proof channel, the explosion-proof assembly includes a fixed frame, an explosion-proof plate, a first connecting structure and a second connecting structure, the fixed frame is fixed to the plate body through the first connecting structure, the fixed frame partially extends into the explosion-proof channel, the explosion-proof plate is fixed to the part of the fixed frame extending into the explosion-proof channel through the second connecting structure, the fixed frame and the explosion-proof plate jointly close the explosion-proof channel, wherein, when the pressure acting on the explosion-proof plate is greater than a preset first pressure, the first connecting structure decomposes, and the fixed frame moves along a first direction, and when the pressure acting on the explosion-proof plate is greater than a preset second pressure, the second connecting structure decomposes, and the explosion-proof plate moves along a second direction, and the first direction is opposite to the second direction.

[0006] Optionally, the preset first pressure is greater than the preset second pressure.

[0007] Optionally, the plate body is provided with a first surface and a second surface, the first surface and the second surface are arranged opposite to each other, the explosion-relief channel runs from the first surface to the second surface, the explosion-relief plate and the fixing frame are both located in the explosion-relief channel, the explosion-relief plate is flush with the first surface, and the fixing frame protrudes from the second surface.

[0008] Optionally, the explosion relief structure further includes a seal, wherein the seal is provided with a first sealing portion and a second sealing portion, wherein the first sealing portion is sealedly connected between the fixed frame and the plate body, and the second sealing portion is sealedly connected between the explosion relief plate and the fixed frame.

[0009] Optionally, the first connection structure includes a plurality of first bolt assemblies, the plurality of first bolt assemblies are arranged in a ring-shaped manner, and the first bolt assemblies are fixed to the plate body after passing through the fixing frame and the sealing member.

[0010] Optionally, the second connecting structure includes a plurality of second bolt assemblies, and the plurality of second bolt assemblies are arranged in a ring-shaped manner. The second bolt assemblies pass through the fixing frame, extend into the part of the explosion-relief channel and the sealing member, and are then fixed to the explosion-relief plate. Along the direction from the center to the surrounding areas, the plurality of second bolt assemblies and the plurality of first bolt assemblies are arranged in an alternating manner.

[0011] Optionally, the first bolt assembly includes a first bolt, a first gasket and a first nut, the fixing frame is provided with a first through hole, the sealing member is provided with a second through hole, the first through hole corresponds to the second through hole, the first gasket is arranged on a surface of the fixing frame away from the sealing member, the first nut is embedded in the plate body, the first bolt passes through the first gasket and is threadedly connected to the first nut along the first through hole and the second through hole, and when the pressure acting on the explosion venting plate is greater than a preset first pressure, the connection between the first nut and the plate body is deformed and allowed to pass through the first through hole and the second through hole, so that the fixing frame is moved in a first direction Move, and / or, the second bolt assembly includes a second bolt, a second gasket and a second nut, the fixing frame is provided with a third through hole, the sealing member is provided with a fourth through hole, the third through hole corresponds to the fourth through hole, the second gasket is arranged on the surface of the fixing frame away from the sealing member, the second nut is embedded in the explosion-proof plate, the second bolt passes through the second gasket and is threadedly connected to the second nut along the third through hole and the fourth through hole, when the pressure acting on the explosion-proof plate is greater than the preset second pressure, the second gasket is deformed and allowed to pass through the third through hole and the fourth through hole, so that the explosion-proof plate moves along the second direction.

[0012] Optionally, a limiting rope is further included, one end of which is fixed to the plate body and extends into the fixing frame, and the other end of the limiting rope extends out of the fixing frame and extends and is fixed to the explosion-proof plate.

[0013] Optionally, the plate body is provided with reinforcing ribs, the reinforcing ribs are arranged around the periphery of the explosion-relief channel, and the fixing frame is fixed to the reinforcing ribs through the first connecting structure.

[0014] In order to solve the above technical problems, another technical solution adopted by the embodiment of the utility model is: to provide an energy storage device, including the above explosion relief structure.

[0015] The beneficial effects of the embodiments of the utility model are as follows: different from the prior art, the embodiments of the utility model provide an explosion-proof structure, including a plate body and an explosion-proof assembly, the plate body is provided with an explosion-proof channel, the explosion-proof assembly includes a fixed frame, an explosion-proof plate, a first connecting structure and a second connecting structure, the fixed frame is fixed to the plate body by the first connecting structure, the fixed frame partially extends into the explosion-proof channel, the explosion-proof plate is fixed to the part of the fixed frame extending into the explosion-proof channel by the second connecting structure, the fixed frame and the explosion-proof plate jointly close the explosion-proof channel, wherein, when the pressure acting on the explosion-proof plate is greater than a preset first pressure, the first connecting structure decomposes, and the fixed frame moves along a first direction, and when the pressure acting on the explosion-proof plate is greater than a preset second pressure, the second connecting structure decomposes, and the explosion-proof plate moves along a second direction, and the first direction is opposite to the second direction. Through the above-mentioned method, the embodiment of the utility model can realize the two-way opening of the explosion relief channel. When it is used in conjunction with the box structure and the battery, it can not only open the explosion relief channel from the inside to the outside to relieve the explosion in time and avoid explosion when the battery thermal runaway exceeds the preset pressure, but also open the explosion relief channel from the outside to the inside to inject water when the battery thermal runaway does not exceed the preset pressure to shorten the emergency response time and reduce the probability of explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 The overall structure of the explosion relief structure in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the explosion relief structure in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 It is an exploded view of the overall structure of the explosion relief structure in the embodiment of the utility model;

[0020] Figure 4 is a schematic diagram of a first connection structure of an explosion relief structure in an embodiment of the utility model;

[0021] Figure 5 is a schematic diagram of a second connection structure of the explosion relief structure in an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the moving state of the fixed frame of the explosion relief structure in the embodiment of the utility model;

[0023] Figure 7It is a schematic diagram of the moving state of the explosion relief plate of the explosion relief structure in the embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 100 explosion relief structure, 1 plate body, 11 explosion relief channel, 12 first surface, 13 second surface, 14 reinforcing ribs, 2 explosion relief assembly, 21 fixing frame, 211 first through hole, 212 third through hole, 22 explosion relief plate, 221 weight reduction cavity, 23 first connecting structure, 231 first bolt assembly, 2311 first bolt, 2312 first gasket, 2313 first nut, 24 second connecting structure, 241 second bolt assembly, 2411 second bolt, 2412 second gasket, 2413 second nut, 3 sealing member, 31 first sealing portion, 32 second sealing portion, 33 second through hole, 34 fourth through hole, 4 limiting rope, 5 gap. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0028] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] See also Figures 1 to 7The utility model provides an embodiment of an explosion relief structure 100, an explosion relief structure 100, including a plate body 1 and an explosion relief assembly 2, the plate body 1 is provided with an explosion relief channel 11, the explosion relief assembly 2 includes a fixed frame 21, an explosion relief plate 22, a first connecting structure 23 and a second connecting structure 24, the fixed frame 21 is fixed to the plate body 1 through the first connecting structure 23, the fixed frame 21 partially extends into the explosion relief channel 11, the explosion relief plate 22 is fixed to the fixed frame 21 through the second connecting structure 24 The part of the extended explosion relief channel 11, the fixed frame 21 and the explosion relief plate 22 jointly seal the explosion relief Explosion channel 11, wherein when the pressure acting on explosion relief plate 22 is greater than a preset first pressure, the first connecting structure 23 is decomposed, and the fixing frame 21 moves along the first direction, and when the pressure acting on explosion relief plate 22 is greater than a preset second pressure, the second connecting structure 24 is decomposed, and the explosion relief plate 22 moves along the second direction, the first direction is opposite to the second direction, and the first direction and the second direction are both perpendicular to the plate body 1, the preset first pressure is a pressure that can decompose the first connecting structure 23, and the preset second pressure is a pressure that can decompose the second connecting structure 24.

[0030] For the above explosion relief structure 100, please refer to Figures 1 to 3 , wherein the shape of the plate body 1 includes but is not limited to a square, a circle, a trapezoid, a triangle, a polygon or other irregular shapes, the plate body 1 has a fixed thickness, the plate body 1 is provided with a first surface 12 and a second surface 13, the first surface 12 and the second surface 13 are arranged opposite to each other, the explosion-relief channel 11 passes through from the first surface 12 to the second surface 13, the cross-sectional shape of the explosion-relief channel 11 is respectively the same as the cross-sectional shape of the explosion-relief plate 22 and the fixed frame 21, the cross-sectional shape of the explosion-relief channel 11 includes but is not limited to a square, a circle, a trapezoid, a triangle, a polygon or other irregular shapes, the cross-sectional shape of the explosion-relief channel 11, the explosion-relief plate 22 and the fixed frame 21 refers to the shape of a plane intercepted along the first direction or the second direction.

[0031] For the above-mentioned explosion relief structure 100, in some embodiments, the explosion relief structure 100 is used in conjunction with a box structure and an energy storage structure (e.g., a battery), the box structure is provided with an opening and a receiving cavity, and the plate body 1 of the explosion relief structure 100 includes but is not limited to being connected to the box structure by one or more connection methods such as welding, screwing, snapping, or clamping, and is adapted to cover the opening of the box structure, so that the receiving cavity of the box structure forms a closed space, and the energy storage structure is fixed to the receiving cavity and is used to store and output electrical energy. In addition, in some other embodiments, the plate body 1 of the explosion relief structure 100 can also be formed integrally with the box structure. Compared with a spliced ​​structure formed by various connection methods, the integrally formed structure can improve the airtightness and structural strength between the explosion relief structure 100 and the box structure, and when used in conjunction with the energy storage structure, it can improve safety and reliability.

[0032] Furthermore, in the process of explosion relief of the explosion relief structure 100, in order to mitigate the impact force, that is, to reduce the impact force on the side wall of the explosion relief channel 11 and cause the plate body 1 to rupture, please refer to Figures 1 to 3 In some embodiments, the plate body 1 is provided with reinforcing ribs 14 , which are arranged around the periphery of the explosion relief channel 11 , the fixing frame 21 is fixed to the reinforcing ribs 14 through the first connecting structure 23 , and the explosion relief plate 22 is arranged opposite to the reinforcing ribs 14 .

[0033] For further information, see Figures 1 to 3 The explosion relief plate 22 and the fixing frame 21 are both located in the explosion relief channel 11 , the explosion relief plate 22 is flush with the first surface 12 , and the fixing frame 21 protrudes from the second surface 13 .

[0034] In some embodiments, see Figure 7 The explosion venting plate 22 is hollow inside, that is, a weight reduction chamber 221 is provided inside the explosion venting plate 22. Through the above arrangement, the weight of the explosion venting plate 22 can be reduced, and then during the movement of the explosion venting plate 22, the influence of the explosion venting plate 22's own weight on the movement of the explosion venting plate 22 can be reduced.

[0035] In some embodiments, when the explosion relief structure 100 is used in conjunction with the box structure, the first surface 12 of the plate body 1 faces the outside, and the second surface 13 of the plate body 1 faces the inside of the box structure. Therefore, by setting the explosion relief plate 22 flush with the first surface 12 and the fixing frame 21 protruding from the second surface 13, it is possible to prevent the explosion relief plate 22 from protruding from the first surface 12, thereby reducing the probability of the explosion relief plate 22 encountering a collision, thereby reducing the probability of the first connection structure 23 and the second connection structure 24 being loose, so as to improve the stability of the first connection structure 23 and the second connection structure 24. It is understandable that in some other embodiments, in addition to being flush with the first surface 12, the explosion relief plate 22 can also be set concave toward the explosion relief channel 11 based on the first surface 12.

[0036] In addition, in order to further reduce the probability of the first connection structure 23 and the second connection structure 24 being loosened, please refer to Figures 1 to 3 In some embodiments, the first connection structure 23 passes through the fixed frame 21 and is connected to the second surface 13, and the second connection structure 24 passes through the fixed frame 21 and is connected to the explosion-proof plate 22. When the explosion-proof structure 100 is used in conjunction with the box structure, the first connection structure 23 and the second connection structure 24 are both arranged toward the inside of the box structure, which can prevent the first connection structure 23 and the second connection structure 24 from being exposed to the outside, thereby preventing the first connection structure 23 and the second connection structure 24 from encountering a collision, thereby further reducing the probability of the first connection structure 23 and the second connection structure 24 loosening.

[0037] Furthermore, for the above-mentioned explosion relief structure 100, the preset first pressure is greater than the preset second pressure. When the explosion relief structure 100 is used in conjunction with the box structure, by setting the preset first pressure greater than the preset second pressure, the difficulty of opening the explosion relief channel 11 from the outside to the inside can be greater than the difficulty of opening the explosion relief channel 11 from the inside to the outside, thereby reducing the probability of the explosion relief channel 11 being opened by mistake due to improper external operation. For example, in some embodiments, the preset first pressure is set to 1 bar-5 bar, and the preset second pressure is set to 0.1 bar. When the explosion relief structure 100 is used in conjunction with the box structure, the pressure for opening the explosion relief channel 11 from the outside to the inside is 1 bar-5 bar, and the pressure for opening the explosion relief channel 11 from the inside to the outside is 0.1 bar, so that the difficulty of opening the explosion relief channel 11 from the outside to the inside is greater than the difficulty of opening the explosion relief channel 11 from the inside to the outside. In this case, the explosion relief channel 11 can only be opened from the outside to the inside by prying it open with an external tool or breaking it with a high-pressure water gun, and the explosion relief channel 11 cannot be opened from the outside to the inside by human error, effectively avoiding the accidental opening of the explosion relief channel 11 due to improper human operation. It can be understood that in some other embodiments, the preset first pressure and the preset second pressure do not need to be specific values, and it is only necessary to satisfy that the preset first pressure is several times the preset second pressure, wherein the multiple is preferably 10 times-50 times.

[0038] Further, for the above explosion relief structure 100, please refer to Figure 4 and Figure 5 A gap 5 is formed between the explosion venting plate 22 and the side wall of the explosion venting channel 11, wherein one end of the gap 5 penetrates to the first surface 12 for communicating with the outside world, and the other end of the gap 5 penetrates to the second surface 13, and the other end of the gap 5 is sealed by the portion of the fixed frame 21 protruding from the second surface 13 and extending into the explosion venting channel 11. When the explosion venting structure 100 is used in conjunction with the box structure, the second surface 13 faces the inside of the box structure, and the gap 5 is partially cut off from communicating with the inside of the box structure through the fixed frame 21 extending into the explosion venting channel 11, which is conducive to forming a closed space inside the box structure. The setting of the above-mentioned gap 5 is conducive to users extending external tools into the gap 5, thereby facilitating users to quickly pry open the explosion venting plate 22 and the fixed frame 21 to open the explosion venting channel 11.

[0039] Further, in order to improve the sealing performance of the explosion relief structure 100, please refer to Figure 4 and Figure 5 The explosion relief structure 100 further includes a seal 3 , which includes a first seal portion 31 and a second seal portion 32 . The first seal portion 31 is sealed between the fixed frame 21 and the plate body 1 , and the second seal portion 32 is sealed between the explosion relief plate 22 and the fixed frame 21 .

[0040] In some embodiments, the seal 3 seals the gap 5 formed between the explosion relief plate 22 and the side wall of the explosion relief channel 11, and the seal 3 is an integral structure, that is, the first seal portion 31 and the second seal portion 32 are an integral structure formed in one piece, for example, the seal 3 is an annular sealing gasket, and the seal 3 has an outer peripheral side wall and an inner peripheral side wall, wherein the first seal portion 31 is an annular portion close to the outer peripheral side wall of the seal 3, and the second seal portion 32 is another annular portion close to the inner peripheral side wall of the seal 3. By the above-mentioned integral structure in which the first seal portion 31 and the second seal portion 32 are formed in one piece, the airtightness and structural strength of the seal 3 can be effectively improved. It can be understood that in some other implementations, the seal 3 is a split structure, that is, the first seal portion 31 and the second seal portion 32 are different independent structures, for example, the first seal portion 31 and the second seal portion 32 are both independent sealing rings. Since the first sealing part 31 and the second sealing part 32 are different independent structures, when only one of the first sealing part 31 or the second sealing part 32 is damaged, it is convenient to replace the first sealing part 31 or the second sealing part 32 separately without replacing the sealing part 3 as a whole, thereby improving replacement efficiency and reducing maintenance costs.

[0041] For the first connection structure 23, please refer to Figures 3 to 5 The first connection structure 23 includes a plurality of first bolt assemblies 231, which are arranged in an annular manner and fixed to the plate body 1 after passing through the fixing frame 21 and the sealing member 3. The arrangement of the plurality of first bolt assemblies 231 helps to evenly distribute the force of the first connection structure 23, balance the force of the fixing frame 21 and the sealing member 3, prevent the fixing frame 21 and the sealing member 3 from being locally subjected to excessive force, and improve the overall stability of the fixing frame 21 and the sealing member 3.

[0042] In some embodiments, see Figures 3 to 5 The first bolt assembly 231 includes a first bolt 2311, a first gasket 2312 and a first nut 2313. The fixing frame 21 is provided with a first through hole 211, and the sealing member 3 is provided with a second through hole 33. The first through hole 211 and the second through hole 33 correspond to each other. The first gasket 2312 is arranged on the surface of the fixing frame 21 away from the sealing member 3. The first nut 2313 is embedded in the plate body 1. The first bolt 2311 passes through the first gasket 2312 and is screwed with the first nut 2313 along the first through hole 211 and the second through hole 33. When the pressure acting on the explosion relief plate 22 is greater than the preset first pressure, the connection between the first nut 2313 and the plate body 1 is deformed, and the first nut 2313 is allowed to pass through the first through hole 211 and the second through hole 33, so that the first bolt 2311 follows the first nut 2313 to pass through the first through hole 211 and the second through hole 33, so that the first bolt assembly 231 is freed from the restriction of the plate body 1, so that the fixing frame 21 moves along the first direction.

[0043] For the second connection structure 24, please refer to Figures 3 to 5 The second connection structure 24 includes a plurality of second bolt assemblies 241, which are arranged in an annular manner. The second bolt assemblies 241 are fixed to the explosion relief plate 22 after passing through the portion of the fixed frame 21 extending into the explosion relief channel 11 and the seal 3. In the direction from the center to the surroundings, the plurality of second bolt assemblies 241 are arranged alternately with the plurality of first bolt assemblies 231. The arrangement of the plurality of second bolt assemblies 241 helps to evenly distribute the force of the second connection structure 24, so that the portion of the fixed frame 21 extending into the explosion relief channel 11 and the seal 3 are balanced in force, and the portion of the fixed frame 21 extending into the explosion relief channel 11 and the seal 3 are prevented from being overly stressed. In addition, by arranging the plurality of second bolt assemblies 241 and the plurality of first bolt assemblies 231 alternately in the direction from the center to the surroundings, it is helpful to balance the force of the fixed frame 21 and the seal 3 as a whole.

[0044] In some embodiments, see Figures 3 to 5 The second bolt assembly 241 includes a second bolt 2411, a second gasket 2412 and a second nut 2413. The fixing frame 21 is provided with a third through hole 212, and the sealing member 3 is provided with a fourth through hole 34. The third through hole 212 corresponds to the fourth through hole 34. The second gasket 2412 is arranged on the surface of the fixing frame 21 away from the sealing member 3. The second nut 2413 is embedded in the explosion venting plate 22. The second bolt 2411 passes through the second gasket 2412 and is screwed with the second nut 2413 along the third through hole 212 and the fourth through hole 34. When the pressure acting on the explosion venting plate 22 is greater than the preset second pressure, the second gasket 2412 is deformed and allowed to pass through the third through hole 212 and the fourth through hole 34, so that the second bolt 2411 follows the second gasket 2412 to pass through the third through hole 212 and the fourth through hole 34, so that the second bolt assembly 241 is freed from the restriction of the fixing frame 21 and the sealing member 3, so that the explosion venting plate 22 moves along the second direction.

[0045] Further, in the process that the fixing frame 21 moves along the first direction or the explosion venting plate 22 moves along the second direction, in order to prevent the fixing frame 21 or the explosion venting plate 22 from completely separating from the explosion venting structure 100 and causing the fixing frame 21 or the explosion venting plate 22 to pop out and injure someone, please refer to Figures 1 to 3, the explosion relief structure 100 also includes a limiting rope 4, one end of which is fixed to the plate body 1 and extends into the fixed frame 21, and the other end of the limiting rope 4 extends out of the fixed frame 21 and extends to be fixed to the explosion relief plate 22. Through the above arrangement, the limiting rope 4 can simultaneously limit the moving distance of the fixed frame 21 and the explosion relief plate 22, thereby preventing the fixed frame 21 or the explosion relief plate 22 from completely separating from the explosion relief structure 100. It can be understood that the way in which the limiting rope 4 is fixed to the plate body 1 or the explosion relief plate 22 includes but is not limited to one or more connection methods such as welding, screwing, clamping, etc. In some embodiments, at least two limiting ropes 4 are provided, and at least two limiting ropes 4 are symmetrically arranged on opposite sides of the fixed frame 21 and the explosion relief plate 22.

[0046] The embodiment of the utility model provides an explosion relief structure 100, including a plate body 1 and an explosion relief assembly 2, the plate body 1 is provided with an explosion relief channel 11, the explosion relief assembly 2 includes a fixed frame 21, an explosion relief plate 22, a first connecting structure 23 and a second connecting structure 24, the fixed frame 21 is fixed to the plate body 1 by the first connecting structure 23, the fixed frame 21 partially extends into the explosion relief channel 11, the explosion relief plate 22 is fixed to the part of the fixed frame 21 extending into the explosion relief channel 11 by the second connecting structure 24, the fixed frame 21 and the explosion relief plate 22 jointly close the explosion relief channel 11, wherein, when the pressure acting on the explosion relief plate 22 is greater than a preset first pressure, the first connecting structure 23 is decomposed, and the fixed frame 21 moves along the first direction, and when the pressure acting on the explosion relief plate 22 is greater than a preset second pressure, the second connecting structure 24 is decomposed, and the explosion relief plate 22 moves along the second direction, and the first direction is opposite to the second direction. Through the above-mentioned method, the embodiment of the utility model can realize the two-way opening of the explosion relief channel 11. When it is used in conjunction with the box structure and the battery, it can not only open the explosion relief channel 11 from the inside to the outside to relieve the explosion in time and avoid explosion when the battery thermal runaway exceeds the preset pressure, but also can open the explosion relief channel 11 from the outside to the inside to inject water when the battery thermal runaway does not exceed the preset pressure to shorten the emergency response time and reduce the probability of explosion.

[0047] The utility model further provides an embodiment of an energy storage device, the energy storage device includes the above-mentioned explosion relief structure, and the specific structure and function of the above-mentioned explosion relief structure can be referred to the above-mentioned embodiment, which will not be described one by one here.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An explosion relief structure, It is characterized in that include: The plate body is provided with an explosion relief passage; An explosion relief assembly, comprising a fixing frame, an explosion relief plate, a first connection structure and a second connection structure, wherein the fixing frame is fixed to the plate body through the first connection structure, the fixing frame partially extends into the explosion relief channel, the explosion relief plate is fixed to the portion of the fixing frame extending into the explosion relief channel through the second connection structure, and the fixing frame and the explosion relief plate jointly close the explosion relief channel; When the pressure acting on the explosion venting plate is greater than a preset first pressure, the first connecting structure decomposes and the fixing frame moves along a first direction; when the pressure acting on the explosion venting plate is greater than a preset second pressure, the second connecting structure decomposes and the explosion venting plate moves along a second direction; the first direction is opposite to the second direction.

2. The explosion relief structure according to claim 1, It is characterized in that The preset first pressure is greater than the preset second pressure.

3. The explosion relief structure according to claim 2, It is characterized in that The plate body is provided with a first surface and a second surface, the first surface and the second surface are arranged opposite to each other, the explosion relief channel runs from the first surface to the second surface, the explosion relief plate and the fixing frame are both located in the explosion relief channel, the explosion relief plate is flush with the first surface, and the fixing frame protrudes from the second surface.

4. The explosion relief structure according to claim 1, It is characterized in that The explosion relief structure further includes a seal, which is provided with a first seal portion and a second seal portion, wherein the first seal portion is sealedly connected between the fixing frame and the plate body, and the second seal portion is sealedly connected between the explosion relief plate and the fixing frame.

5. The explosion relief structure according to claim 4, It is characterized in that The first connection structure includes a plurality of first bolt assemblies, which are arranged in a ring-shaped manner and are fixed to the plate body after passing through the fixing frame and the sealing member.

6. The explosion relief structure according to claim 5, It is characterized in that The second connection structure includes a plurality of second bolt assemblies, which are arranged in a ring-shaped interval. The second bolt assemblies pass through the fixing frame and extend into the part of the explosion-relief channel and the sealing member and are fixed to the explosion-relief plate. In the direction from the center to the surrounding areas, the plurality of second bolt assemblies and the plurality of first bolt assemblies are arranged in an alternating manner.

7. The explosion relief structure according to claim 6, It is characterized in that The first bolt assembly includes a first bolt, a first gasket and a first nut, the fixing frame is provided with a first through hole, the sealing member is provided with a second through hole, the first through hole corresponds to the second through hole, the first gasket is arranged on a surface of the fixing frame away from the sealing member, the first nut is embedded in the plate body, the first bolt passes through the first gasket and is threadedly connected with the first nut along the first through hole and the second through hole, when the pressure acting on the explosion relief plate is greater than a preset first pressure, the connection between the first nut and the plate body is deformed and allowed to pass through the first through hole and the second through hole, so that the fixing frame moves along the first direction; and / or, The second bolt assembly includes a second bolt, a second gasket and a second nut. The fixing frame is provided with a third through hole, and the sealing member is provided with a fourth through hole. The third through hole corresponds to the fourth through hole. The second gasket is arranged on a surface of the fixing frame away from the sealing member. The second nut is embedded in the explosion-proof plate. The second bolt passes through the second gasket and is threadedly connected to the second nut along the third through hole and the fourth through hole. When the pressure acting on the explosion-proof plate is greater than the preset second pressure, the second gasket is deformed and allowed to pass through the third through hole and the fourth through hole, so that the explosion-proof plate moves along the second direction.

8. The explosion relief structure according to claim 1, It is characterized in that It also includes a limiting rope, one end of which is fixed to the plate body and extends into the fixing frame, and the other end of the limiting rope extends out of the fixing frame and extends to be fixed to the explosion relief plate.

9. The explosion relief structure according to claim 1, It is characterized in that The plate body is provided with reinforcing ribs, the reinforcing ribs are arranged around the periphery of the explosion relief channel, and the fixing frame is fixed to the reinforcing ribs through the first connecting structure.

10. An energy storage device, It is characterized in that It comprises the explosion relief structure as described in any one of claims 1 to 9.

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