Cabinet, energy storage apparatus, energy storage system and electrical device

Abstract

A cabinet (100), an energy storage apparatus (300), an energy storage system (400), and an electrical device, relating to the technical field of energy storage apparatuses (300). The cabinet (100) comprises a cabinet body (10), a cabinet door (20) and a pressure relief structure. The cabinet door (20) is connected to the cabinet body (10). The cabinet body (10) and the cabinet door (20) jointly define an accommodating cavity (16). The accommodating cavity (16) is suitable for accommodating a battery (200). The pressure relief structure is arranged on the cabinet door (20) and / or the cabinet body (10). When a thermal management parameter of the accommodating cavity (16) exceeds a first threshold, the pressure relief structure relieves the pressure, and when the thermal management parameter of the accommodating cavity (16) exceeds a second threshold, the cabinet door (20) relieves the pressure, the first threshold being less than the second threshold. By means of the configuration in which the cabinet (100) comprises the cabinet body (10), the cabinet door (20) and the pressure relief structure, the cabinet door (20) is connected to the cabinet body (10), the pressure relief structure is connected to the cabinet door (20) and / or the cabinet body (10), the pressure relief structure relieves the pressure when the thermal management parameter of the cabinet body (100) exceeds the first threshold, and the cabinet door (20) relieves the pressure when the thermal management parameter exceeds the second threshold greater than the first threshold, the explosion-proof effect can be improved, thereby reducing risks.

Description

Cabinets, energy storage devices, energy storage systems and electrical equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 30, 2023, with application number 202323670354.0 and application name “Cabinet, energy storage device, energy storage system and electrical equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of energy storage devices, and in particular to a cabinet, an energy storage device, an energy storage system, and electrical equipment. Background Art

[0003] In recent years, with the rapid development of the new energy sector, energy storage devices have found widespread application. At high temperatures, the reaction between fuel gas and oxygen accelerates, enabling power generation at high temperatures. However, due to the excessive pressure within the battery cavity at high temperatures, explosions are highly likely to occur. Therefore, energy storage devices require explosion-proof devices on the cabinet to ensure safety.

[0004] The explosion-proof device of the existing energy storage device is only a pressure relief structure, and the explosion relief effect is limited. Summary of the Invention

[0005] The purpose of this application is to provide a cabinet, an energy storage device, an energy storage system and electrical equipment that can relieve pressure through the pressure relief structure of the energy storage device and / or the cabinet door to reduce risks.

[0006] To achieve the purpose of this application, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a cabinet comprising a cabinet body, a cabinet door, and a pressure relief structure, wherein the cabinet door is connected to the cabinet body, and the cabinet body and the cabinet door together enclose a accommodating cavity, which is suitable for accommodating batteries; the pressure relief structure is arranged on the cabinet door and / or the cabinet body; when the thermal management parameter in the accommodating cavity exceeds a first threshold, the pressure relief structure relieves pressure, and when the thermal management parameter in the accommodating cavity exceeds a second threshold, the cabinet door relieves pressure, and the first threshold is less than the second threshold.

[0008] In one embodiment, the cabinet body further includes an anti-slip component, which is suitable for preventing the cabinet door from falling off the cabinet body when the cabinet door is depressurized, or, when the cabinet door is depressurized, the cabinet door falls off the cabinet body, and the anti-slip component is suitable for preventing the distance between the cabinet door and the cabinet body from exceeding the target distance.

[0009] In one embodiment, the anti-slip component includes a first anti-slip part, a zipper and a second anti-slip part, the first anti-slip part is connected to the cabinet door, the second anti-slip part is connected to the cabinet body, and the two ends of the zipper are respectively connected to the first anti-slip part and the second anti-slip part.

[0010] In one embodiment, the cabinet body further includes a separation portion, which connects the cabinet door and the cabinet body and is configured to disintegrate when a thermal management parameter in the accommodating cavity exceeds a second threshold value, so that at least a portion of the cabinet door has a gap with the cabinet body.

[0011] In one embodiment, the pressure relief structure includes an explosion-proof valve.

[0012] In one embodiment, the cabinet body further includes a pressure relief window, and the pressure relief window is arranged on the top of the cabinet body.

[0013] In one embodiment, the cabinet further includes an exhaust member, which is disposed on the cabinet door and / or the cabinet body, and is used to achieve gas exchange between the inside and outside of the cabinet.

[0014] In one embodiment, the cabinet also includes a detector, which is electrically connected to the exhaust member and is used to detect the thermal management parameters in the accommodating cavity; the exhaust member is used to open when the thermal management parameters detected by the detector exceed a third threshold, and the third threshold is less than the first threshold.

[0015] In one embodiment, the thermal management parameter includes at least one of smoke concentration, temperature, and air pressure.

[0016] In one embodiment, the thermal management parameter includes the air pressure, and the second threshold value includes a pressure value F, satisfying: F = F1*cosα / A, wherein F1 is the bearing pressure when the separation part is disintegrated, A is the area of ​​the cabinet door, and α is the angle between the cabinet door and the cabinet body after the separation part is disintegrated, satisfying: 10°≤α≤20°.

[0017] In a second aspect, the present application further provides an energy storage device, comprising a battery and a cabinet as described in any one of the various embodiments of the first aspect, wherein the battery is accommodated in the accommodating cavity.

[0018] In a third aspect, the present application also provides an energy storage system comprising a plurality of energy storage devices as described in the second aspect.

[0019] In a fourth aspect, the present application further provides an electrical device, comprising an electrical device and an energy storage device as described in the second aspect or an energy storage system as described in the third aspect, wherein the energy storage device or the energy storage system supplies power to the electrical device.

[0020] By setting the cabinet body to include a cabinet body, a cabinet door and a pressure relief structure, the cabinet door is connected to the cabinet body, and the pressure relief structure is connected to the cabinet door and / or the cabinet body, when the thermal management parameter in the cabinet exceeds a first threshold, the pressure relief structure releases pressure, and when the thermal management parameter exceeds a second threshold greater than the first threshold, the cabinet door releases pressure, which can improve the explosion-proof effect and reduce risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] FIG1 is a perspective view of a cabinet according to an embodiment;

[0023] FIG2 is a schematic side view of a cabinet according to an embodiment;

[0024] FIG3 is a perspective view of a pressure relief window according to an embodiment;

[0025] FIG4 is a schematic diagram of an energy storage device according to an embodiment;

[0026] FIG5 is a schematic diagram 1 of an energy storage system according to an embodiment;

[0027] FIG6 is a second schematic diagram of an energy storage system according to an embodiment.

[0028] Explanation of the accompanying numbers: 100-cabinet body; 10-cabinet body, 11-bottom plate, 12-top plate, 13-first side panel, 14-second side panel, 15-connecting plate, 16-accommodating chamber; 20-cabinet door, 21-door body, 211-exhaust vent, 22-window, 23-explosion-proof valve, 24-separation part; 30-detector; 40-first anti-detachment part; 50-second anti-detachment part; 60-zipper; 70-pressure relief window; α-angle; 200: battery; 300: energy storage device; 400: energy storage system. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be an intermediate component.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this application includes any and all combinations of one or more of the relevant listed items.

[0032] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0033] Embodiments of the present application provide an electrical device, including an electrical device and an energy storage device or an energy storage system in accordance with embodiments of the present application. The electrical device may be a base station, a household electrical load, or the like. The electrical device utilizes the energy storage device or energy storage system in accordance with embodiments of the present application to power the electrical device, thereby providing pressure relief and reducing risk.

[0034] Please refer to Figures 5 and 6 , an embodiment of the present application further provides an energy storage system 400 , which includes a plurality of energy storage devices 300 in the embodiments of the present application.

[0035] Optionally, multiple energy storage devices 300 can be independently arranged, and the multiple energy storage devices 300 are respectively connected to the power consumption device; multiple energy storage devices 300 can also be arranged in series, and the multiple energy storage devices are first connected in series to form a path and then connected to the power consumption device.

[0036] By providing an energy storage device including multiple energy storage systems 400 in the embodiments of the present application, the energy storage device can release pressure by itself, thereby improving the explosion-proof effect and reducing risks.

[0037] 4 , the present embodiment further provides an energy storage device 300, comprising a battery 200 and a cabinet 100 in the present embodiment. The battery may be a square laminated battery, a wound battery, or the like.

[0038] Optionally, the battery 200 is housed in the cabinet 100. There may be one or more batteries 200. When there are multiple batteries 200, the multiple batteries 200 may be connected in series or in parallel, without limitation.

[0039] The energy storage device 300 in the embodiment of the present application adopts the cabinet 100 in the embodiment of the present application. The cabinet door of the cabinet can be used for pressure relief, thereby improving the explosion-proof effect.

[0040] The cabinet in the embodiment of the present application is introduced in detail below.

[0041] 1 , an embodiment of the present application provides a cabinet 100, comprising a cabinet body 10, a cabinet door 20, and a pressure relief structure, wherein the cabinet door 20 is connected to the cabinet body 10. The cabinet body 10 and the cabinet door 20 together form a receiving cavity 16, which is suitable for receiving batteries.

[0042] First, define the directions. Refer to Figure 1, where X is the first direction, Y is the second direction, and Z is the third direction.

[0043] Optionally, the appearance of the cabinet body 10 can be roughly a cuboid, a cylinder, a cube, etc., without specific limitation.

[0044] Optionally, as shown in FIG1 , the cabinet body 10 is a rectangular parallelepiped, and includes a bottom plate 11, a top plate 12, a first side plate 13, a second side plate 14, and a connecting plate 15. The connecting plate 15 extends along a third direction Z, the top plate 12 and the bottom plate 11 are respectively connected to opposite ends of the connecting plate 15 in the third direction Z, and the first side plate 13 and the second side plate 14 are respectively connected to opposite ends of the connecting plate 15 in the first direction X.

[0045] Optionally, the bottom plate 11 , the top plate 12 , the first side plate 13 , the second side plate 14 and the connecting plate 15 enclose a receiving cavity 16 , and the end of the receiving cavity 16 opposite to the connecting plate 15 is open, and the battery is accommodated in the receiving cavity 16 .

[0046] Optionally, the cabinet body 10 is made of a material having high structural strength, specifically metal, high-strength plastic, ceramic, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys. The cabinet body 10 can be an integrated structure, that is, the bottom plate 11, top plate 12, first side plate 13, second side plate 14, and connecting plate 15 are an integrated structure manufactured by an integrated molding process, specifically stamping, casting, etc., without limitation.

[0047] Optionally, the cabinet body 10 may also be a split structure, and the bottom plate 11, top plate 12, first side plate 13, second side plate 14, and connecting plate 15 may be connected and fixed by welding, bonding, clamping, screwing, etc. The wall thickness of each part of the cabinet body 10 may be substantially uniform, that is, the thickness of each plate may be substantially uniform, and the thickness of the bottom plate 11, top plate 12, first side plate 13, second side plate 14, and connecting plate 15 may also be substantially the same.

[0048] Optionally, the cabinet door 20 is connected to the opening of the accommodating cavity 16. When the cabinet door 20 is closed, the cabinet door 20 is opposite to the connecting plate 15 and closes the opening of the accommodating cavity 16.

[0049] Optionally, the cabinet door 20 and the cabinet body 10 may be connected in a sliding manner, a rotating manner, a snap connection, etc., without specific limitation.

[0050] Optionally, the pressure relief structure is provided on the cabinet door 20 and / or the cabinet body 10 .

[0051] Optionally, the cabinet door 20 includes a door body 21. The pressure relief structure is connected to the door body 21, and the connection method can be welding, bonding, clamping, screwing, etc., which is not limited.

[0052] Optionally, when the thermal management parameter in the accommodating cavity 16 exceeds a first threshold, the pressure relief structure relieves pressure, and when the thermal management parameter in the accommodating cavity 16 exceeds a second threshold, the cabinet door 20 relieves pressure, and the first threshold is less than the second threshold.

[0053] At high temperatures, the reaction rate between fuel gas and oxygen accelerates, enabling power generation at high temperatures. However, due to the excessive pressure in the battery cavity at high temperatures, explosions are very likely to occur. The explosion limit of the battery is related to temperature and pressure: when air is mixed with hydrogen, an explosive mixture exists at a hydrogen concentration of approximately 4 to 75% by volume (at room temperature and atmospheric pressure). Because fuel cell systems are compact, in order to minimize this risk, a series of safety precautions are taken in the case of fuel cell systems in the prior art, mainly primary and secondary explosion-proof measures. Primary explosion-proof measures generally prevent the formation of an explosive atmosphere or at least reduce the risk of its formation, while secondary explosion-proof measures generally prevent the ignition of an explosive atmosphere, that is, avoid effective ignition sources.

[0054] In existing energy storage devices, a vent is provided in the side wall of the cabinet 100. A piston slider is installed in the vent. When the piston slider slides within the vent, an adjustable inner cavity is formed between the piston slider's cavity near the housing and the inner wall of the side panel. When the piston slider escapes from the vent, the cavity is connected to the outside world via a sleeve to vent the explosion. However, the channel formed by the vent is small, limiting its adjustable function. Furthermore, under certain explosive forces, the piston slider can cause the device to fly, posing a threat to surrounding equipment and personnel.

[0055] The cabinet 100 in the embodiment of the present application is configured to include a cabinet body 10, a cabinet door 20 and a pressure relief structure. The cabinet door 20 is connected to the cabinet body 10, and the pressure relief structure is connected to the cabinet door 20 and / or the cabinet body 10. When the thermal management parameter in the cabinet 100 exceeds a first threshold, the pressure relief structure releases pressure. When the thermal management parameter exceeds a second threshold greater than the first threshold, the cabinet door 20 releases pressure, which can improve the explosion-proof effect and reduce risks.

[0056] Optionally, the cabinet is provided with an exhaust port 211 for exhausting gas.

[0057] Optionally, the exhaust vent 211 is provided in the door body 21, or the exhaust vent 211 is provided in the cabinet body 10, without limitation. Optionally, the exhaust vent 211 is provided in the door body 21. The door body 21 is made of a material having high structural strength, specifically metal, high-strength plastic, ceramic, etc. The metal material may be aluminum, aluminum alloy, magnesium alloy, iron, or iron alloy.

[0058] Optionally, the air outlet 211 may be square, circular, polygonal, etc., and there may be one or more air outlets 211, without any specific limitation.

[0059] Exemplarily, as shown in FIG1 , the air outlet 211 is circular.

[0060] By providing the exhaust port 211 , combustible gas can be exhausted through the exhaust port 211 when the parameters in the cabinet body 10 reach a preset value, thereby preventing the formation of an explosive atmosphere or at least reducing the risk of its formation.

[0061] Optionally, the cabinet door 20 further includes a pressing plate (not shown in the figure), the door body 21 is provided with a window 22 , and the pressing plate is connected to the door body 21 and closes the window 22 .

[0062] Optionally, the shape of the window 22 is not limited and may be circular, square, polygonal, etc. The shape of the pressure plate is similar to that of the aforementioned window 22. The pressure plate only needs to be able to close the window 22 and the size is not limited.

[0063] Exemplarily, as shown in FIG. 1 , the window 22 is rectangular, and the shape and size of the pressing plate are the same as those of the window 22 .

[0064] Optionally, the pressure plate is detachably connected to the door body 21. The pressure plate may be made of transparent glass, or a material with high structural strength, such as metal, high-strength plastic, or ceramic. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys. The pressure plate and the door body 21 may be connected by welding, bonding, or clamping, without limitation.

[0065] Optionally, there are multiple air outlets 211 , and the multiple air outlets 211 are spaced apart and opened on the door body 21 .

[0066] Optionally, there may be 2, 3, 4, etc. exhaust ports 211 , and the number of exhaust components may correspond to the number of exhaust ports 211 without limitation.

[0067] Optionally, multiple exhaust vents 211 are spaced apart around the window 22. For example, as shown in FIG1 , there are four exhaust vents 211, each located at the four corners of the door 21. Multiple exhaust vents 211 may also be spaced apart on opposite sides of the window 22, without limitation.

[0068] By providing multiple exhaust ports 211 , which are spaced apart on the door body 21 , combustible gas can be discharged more evenly and quickly, preventing the formation of an explosive atmosphere and reducing the risk of explosion caused by excessive local air pressure.

[0069] Optionally, the cabinet body 100 further includes an exhaust member (not shown in the figures), which is disposed on the cabinet door 20 and / or the cabinet body 10 .

[0070] Optionally, an exhaust member is provided at the exhaust port 211 provided on the cabinet door 20 . The exhaust member is used to accelerate the gas to be discharged to the outside through the exhaust port 211 , so as to realize the gas exchange between the inside and outside of the cabinet 100 .

[0071] Optionally, the exhaust member may be a common exhaust member in the art, such as a fan, an exhaust blower, etc., without limitation.

[0072] Optionally, the exhaust piece is connected and fixed to the inner wall surface of the exhaust port 211, or the exhaust piece is connected and fixed to the side facing the connecting plate 15 when the door body 21 is closed, or the exhaust piece is connected and fixed to the side facing away from the connecting plate 15 when the door body 21 is closed. The connection method can be welding, clamping, bonding, screwing, etc., and all of the above methods are acceptable and there is no specific limitation.

[0073] Optionally, the exhaust member is used to accelerate the gas to be discharged to the outside through the exhaust port 211. When the parameters in the cabinet body 10 reach a preset value, the exhaust member starts to work to exchange air through the exhaust port 211 to discharge the combustible gas in the cabinet body 10.

[0074] By setting up an exhaust piece, which is housed in the exhaust port 211, the exhaust piece can accelerate the gas flow, so as to accelerate the discharge of the combustible gas in the cabinet body 10 when the parameters in the cabinet body 10 reach the preset value, thereby preventing the formation of an explosive atmosphere or at least reducing the risk of its formation.

[0075] Optionally, the cabinet 100 further includes a detector 30 electrically connected to the exhaust member. The detector 30 is used to detect a thermal management parameter within the cabinet 100, and the exhaust member is used to open when the thermal management parameter detected by the detector 30 exceeds a third threshold value, where the third threshold value is less than the first threshold value.

[0076] Optionally, the thermal management parameter is at least one of smoke concentration, temperature, and air pressure.

[0077] Optionally, the first threshold, the second threshold, and the third threshold may be any one of smoke concentration, temperature, and air pressure, or may be multiple of the above parameters, without specific limitation.

[0078] Optionally, there can be one or more detectors. When there are multiple detectors, the smoke concentration, and / or temperature, and / or air pressure parameters in the accommodating chamber 16 can be detected respectively, without specific limitation.

[0079] By setting the thermal management parameters to at least one of smoke concentration, temperature, and air pressure, the internal conditions of the cabinet 100 can be detected from multiple dimensions so as to detect abnormal conditions as soon as possible, prevent the formation of an explosive atmosphere, or at least reduce the risk of its formation.

[0080] Optionally, the thermal management parameter is smoke concentration and / or temperature parameter. The detector 30 is used to detect the smoke and / or temperature parameter in the cabinet 100, and the exhaust member is used to open when the smoke and / or temperature parameter detected by the detector 30 exceeds a third threshold.

[0081] Optionally, the exhaust member operates when the thermal management parameter of the accommodating chamber 16 exceeds a third threshold. When the thermal management parameter does not exceed the third threshold, the exhaust member is closed. After the exhaust member operates for a period of time, the thermal management parameter of the accommodating chamber 16 drops below the third threshold, and the exhaust member stops operating.

[0082] Optionally, the detector 30 may be a smoke and / or heat fire detector 30 commonly used in the art. The number of detectors 30 may be one or more, and there is no specific limitation.

[0083] Optionally, the detector 30 can be connected to the cabinet body 10 or to the cabinet door 20, and the connection method can be welding, bonding, snap connection, screw connection, etc., which is not specifically limited.

[0084] Exemplarily, as shown in FIG. 1 , the detector 30 is connected to a surface of the first side plate 13 facing the second side plate 14 .

[0085] Optionally, the detector 30 is electrically connected to the exhaust member. The detector 30 and the exhaust member may be connected directly, and the exhaust member is used to open or close according to the smoke and / or temperature parameters detected by the detector 30. Alternatively, the detector 30 and the exhaust member may be connected indirectly. For example, the cabinet 100 further includes a control member (not shown in the figure), which is electrically connected to the detector 30 and the exhaust member, respectively. The smoke and / or temperature parameters detected by the detector 30 are transmitted to the control member, and the control member controls the exhaust member to open or close. All of the above methods are possible and are not specifically limited.

[0086] The cabinet 100 also includes a detector 30 electrically connected to the exhaust element. The detector 30 is used to detect a thermal management parameter within the cabinet 100. The exhaust element is configured to activate when the thermal management parameter detected by the detector 30 exceeds a third threshold, which is lower than the first threshold. This allows for the timely exhaust of combustible gases, thereby reducing the risk of an explosive atmosphere.

[0087] Optionally, the pressure relief structure further includes an explosion-proof valve 23 .

[0088] Optionally, the explosion-proof valve 23 is provided on the door body 21 , or the explosion-proof valve 23 is provided on the cabinet body 10 , which is not specifically limited.

[0089] The root cause of thermal runaway of the battery cell is the exothermic side reaction inside the battery cell that causes heat accumulation. The rate of heat exchange of the battery cell to the outside is lower than the rate of heat accumulation. The temperature continues to rise until it reaches the ignition point, causing combustion and explosion.

[0090] To prevent thermal runaway accidents and avoid pressure imbalances within a confined space, and given that lithium batteries can instantly generate large amounts of toxic gases when they catch fire, timely and targeted pressure relief is necessary. Explosion-proof valve 23, a passive safety measure against thermal runaway in energy storage devices, achieves these requirements for maintaining pressure balance and directional gas release.

[0091] Optionally, the thermal management parameter includes a pressure parameter. The explosion-proof valve 23 opens when the pressure parameter in the accommodating chamber 16 reaches a first threshold value, which is greater than the pressure parameter when the inside of the cabinet 100 is in a normal environment.

[0092] Optionally, the explosion-proof valve 23 can be a commonly used explosion-proof valve 23 in the art, such as a piston spring-type explosion-proof valve 23, a thimble-type explosion-proof valve 23, etc. The connection method between the explosion-proof valve 23 and the door body 21 can be welding, bonding, clamping, screwing, etc., without specific limitation. By providing the explosion-proof valve 23, when an explosive atmosphere is formed and an explosion occurs, the pressure in the cabinet 100 increases. When the pressure reaches the first pressure value of the opening pressure of the explosion-proof valve 23, the explosion-proof valve 23 opens to unload the explosion and relieve the pressure in time.

[0093] Optionally, the cabinet 100 further includes a separation portion 24 , which connects the cabinet door 20 and the cabinet body 10 and is used to disintegrate when the thermal management parameter in the accommodating cavity 16 exceeds a second threshold, so that at least part of the cabinet door 20 has a gap with the cabinet body 10 .

[0094] Optionally, the separation portion 24 is connected to the door body 21 of the cabinet door 20. The separation portion 24 and the door body 21 can be an integrated structure or a split structure, and the separation portion 24 and the door body 21 are connected and fixed by welding, clamping, screwing, etc., without specific limitation.

[0095] Optionally, when the explosion pressure in the cabinet body 100 reaches a second threshold value of the passive opening pressure of the cabinet door 20 , the separation portion 24 is deformed or disintegrated to create a gap between at least a portion of the door body 21 and the cabinet body 10 .

[0096] Optionally, the separation portion 24 is a door lock hinge. When the explosion pressure reaches the passive opening pressure of the cabinet door 20, the door lock hinge is disconnected to disconnect at least part of the door body 21 from the cabinet body 10, and the cabinet door 20 is passively opened to achieve an instant explosion relief effect.

[0097] Optionally, by displaying dynamic simulation to simulate the situation when the battery explodes, the weak surface is controlled to be located at the door lock hinge to ensure that when the explosion pressure in the cabinet 100 reaches the second pressure value of the passive opening pressure of the cabinet door 20, the door lock hinge is disconnected first.

[0098] By setting the cabinet door 20 to include a separation part 24, the separation part 24 connects the door body 21 and the cabinet body 10. Under normal circumstances, the cabinet door 20 can be opened and protected normally. When an explosion occurs, the separation part 24 is used to disintegrate so that there is a gap between at least part of the door body 21 and the cabinet body 10. When the pressure value of the explosion reaches the passive opening pressure of the cabinet door 20, the cabinet door 20 can be passively opened, and the pressure relief area is large, which can achieve the effect of instantaneous explosion relief to protect the cabinet body 10.

[0099] Moreover, by providing double passive explosion-proof devices for double protection, safety is higher. In the event that the passive explosion-proof valve 23 fails or cannot relieve pressure in time, the cabinet door 20 can be passively opened to relieve pressure, and the energy storage system can still safely relieve explosion.

[0100] Optionally, the thermal management parameter includes air pressure, and the second threshold includes a pressure value F, satisfying: F=F1*cosα / A.

[0101] Wherein, F1 is the bearing pressure when the separation part 24 is disassembled, A is the area of ​​the door body 21, and α is the angle between the door body 21 and the cabinet body 10 after the separation part 24 is disassembled.

[0102] Optionally, the bearing force F1 when the separation portion 24 disintegrates may be determined through simulation analysis.

[0103] Optionally, the angle α satisfies the following conditions: 10° ≤ α ≤ 20°. Under normal conditions, the door 21 is tightly attached to the cabinet body 10. After the separation portion 24 disintegrates, as shown in Figure 2, the door 21 is bent by the explosive impact but does not completely detach. Therefore, an angle α is formed between the separation portion 24 and the cabinet body 10.

[0104] Optionally, the value of α can be 12°, 15°, 18°, etc., without specific limitation.

[0105] By setting the second threshold value including the pressure value F, satisfying: F=F1*cosα / A, when the explosion pressure value F reaches the passive opening pressure of the cabinet door 20, the cabinet door 20 can be passively opened, and the pressure relief area is large, which can achieve the effect of instant explosion relief to protect the cabinet body 10.

[0106] Optionally, the cabinet body 100 further includes an anti-slip component, which is suitable for preventing the cabinet door 20 from falling off the cabinet body 10 when the cabinet door 20 is depressurized, or, when the cabinet door 20 is depressurized, the cabinet door 20 falls off the cabinet body 10, and the anti-slip component is suitable for ensuring that the distance between the cabinet door 20 and the cabinet body 10 does not exceed the target distance.

[0107] Optionally, when the cabinet door 20 is passively opened to release the explosion, due to the high pressure inside the cabinet body 100, the cabinet door 20 is forced open and may be ejected away from the cabinet body 10. Therefore, an anti-slip component is provided between the cabinet door 20 and the cabinet body 10. When the cabinet door 20 is forced open, the anti-slip component applies a pulling force to the cabinet door 20 toward the cabinet body 10, which can play a certain buffering role when the cabinet door 20 is passively forced open, preventing the cabinet door 20 from flying and causing damage to the external environment or pedestrians.

[0108] Optionally, the anti-slip component includes a first anti-slip part 40, a second anti-slip part 50 and a zipper 60, the first anti-slip part 40 is connected to the cabinet door 20, the second anti-slip part 50 is connected to the cabinet body 10, and the two ends of the zipper 60 are respectively connected to the first anti-slip part 40 and the second anti-slip part 50.

[0109] Optionally, the first anti-slip portion 40 is connected to the door body 21 , and the connection method between the first anti-slip portion 40 and the door body 21 can be welding, bonding, clamping, screwing, etc., without specific limitation.

[0110] Similarly, the second anti-detachment portion 50 and the cabinet body 10 may be connected by welding, bonding, snap connection, screw connection, etc., without specific limitation.

[0111] Optionally, the ends of the zipper 60 are connected to the first anti-slip portion 40 and the second anti-slip portion 50, respectively, to prevent missiles from flying when the door 21 is passively opened to release the explosive. The specific shapes of the first anti-slip portion 40 and the second anti-slip portion 50 are not limited and can be block-shaped, columnar, etc. One of the first anti-slip portion 40 and the second anti-slip portion 50 is always fixed to one end of the zipper 60, and the other is used to connect to the other end of the zipper 60 during installation.

[0112] For example, the first anti-slip portion 40 is a hook for the zipper 60, and one end of the zipper 60 is first connected and fixed to the second anti-slip portion 50. During installation, the end of the zipper 60 away from the second anti-slip portion 50 is connected to the first anti-slip portion 40. Alternatively, the second anti-slip portion 50 is a hook for the zipper 60, and one end of the zipper 60 is always connected and fixed to the first anti-slip portion 40. During installation, the end of the zipper 60 away from the first anti-slip portion 40 is connected to the second anti-slip portion 50.

[0113] Optionally, there can be one zipper 60 or multiple zippers, such as 2, 3, 4, etc. The number of the first anti-slip parts 40 and the second anti-slip parts 50 can correspond to the number of the zipper 60, and there is no specific limitation.

[0114] For example, as shown in FIG1 , there are two zippers 60, two first anti-slip portions 40, and two second anti-slip portions 50. The two second anti-slip portions 50 are respectively connected to the first side panel 13 and the second side panel 14 of the cabinet body 10. FIG1 shows the cabinet door 20 in an open state. When the cabinet door 20 is closed, the two first anti-slip portions 40 are respectively located on both sides of the door body 21 along the first direction X, and one end of the two zippers 60 is respectively connected to the two second anti-slip portions 50. During installation, the end of the zipper 60 away from the second anti-slip portion 50 is connected and fixed to the first anti-slip portion 40 to complete the installation.

[0115] By setting a first anti-slip part 40 and a second anti-slip part 50, the first anti-slip part 40 is connected to the door body 21, and the second anti-slip part 50 is connected to the cabinet body 10. The first anti-slip part 40 and the second anti-slip part 50 are connected in coordination, which can prevent the door body 21 from causing harm to surrounding equipment and people when the cabinet door 20 is passively opened for explosion relief, thereby reducing the risk.

[0116] Optionally, as shown in FIG3 , the cabinet body 100 further includes a pressure relief window 70 . The pressure relief window 70 is disposed on the top of the cabinet body 10 , and is used for pressure relief.

[0117] Optionally, the pressure relief window 70 is opened on the top plate 12 of the cabinet body 10 .

[0118] Optionally, the pressure relief window 70 may be a commonly used pressure relief window 70 in the art. After the explosion occurs, the pressure relief window 70 is actively and / or passively opened to perform synchronous pressure relief, which can increase the explosion relief speed and protect the cabinet body 10.

[0119] Optionally, the structure of the pressure relief window 70 may also be similar to the structure of the aforementioned cabinet door 20. The pressure relief window 70 includes a window body and a pressure relief structure. Please refer to the above and there is no specific limitation.

[0120] The cabinet body 100 further includes a pressure relief window 70 , which is provided at the top of the cabinet body 10 . The pressure relief window 70 is used for pressure relief, thereby improving explosion-proof effects and reducing risks.

[0121] The explosion-proof process of the cabinet 100 in the embodiment of the present application is introduced below.

[0122] First, the cabinet 100 in the embodiment of the present application includes an active explosion-proof system. When the battery or the internal conditions of the cabinet body 10 are abnormal, the active explosion-proof system is activated first. The active explosion-proof system is composed of a detector 30 and an exhaust system. The detector 30 is used to detect smoke and / or temperature parameters in the cabinet body 10. The exhaust system includes an exhaust port 211 and an exhaust member. The exhaust member is used to open when the smoke and / or temperature parameters detected by the detector 30 exceed a preset value, and discharge the combustible gas in the cabinet body 10 through the exhaust port 211, thereby reducing the risk of the formation of an explosive atmosphere.

[0123] If an explosive atmosphere is still formed and the explosion occurs, the pressure inside the cabinet body 10 increases, and the passive explosion-proof system passively opens to unload the explosion. The passive explosion-proof system includes a passive explosion-proof valve 23 and the cabinet door 20 itself. Because the cabinet door 20 itself must meet certain strength requirements to meet working conditions such as transportation and earthquakes, the passive explosion-proof valve 23 is activated first, and the cabinet door 20 is used as the last explosion-proof device. After the explosion occurs, when the pressure inside the cabinet body 10 reaches the opening pressure of the passive explosion-proof valve 23, the passive explosion-proof valve 23 opens and begins to unload the explosion.

[0124] In extreme cases, the explosion cannot be controlled by the active explosion-proof system and the passive explosion-proof valve 23. When the pressure in the cabinet body 10 reaches the passive opening pressure of the cabinet door 20, the door lock hinge is disconnected and the cabinet door 20 is passively opened to quickly release the explosion.

[0125] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the orientation or positional relationship described in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0126] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A cabinet body, comprising: A cabinet main body (10); A cabinet door (20), connected to the cabinet main body (10), the cabinet main body (10) and the cabinet door (20) jointly enclose a receiving cavity (16), and the receiving cavity (16) is adapted to receive a battery; A pressure relief structure, provided on the cabinet door (20) and / or the cabinet main body (10); When the thermal management parameter in the receiving cavity (16) exceeds a first threshold, the pressure relief structure relieves pressure. When the thermal management parameter in the receiving cavity (16) exceeds a second threshold, the cabinet door (20) relieves pressure. The first threshold is less than the second threshold.

2. The cabinet body according to claim 1, further comprising an anti-detachment member. When the cabinet door relieves pressure, the anti-detachment member is adapted to prevent the cabinet door (20) from detaching from the cabinet main body (10), or when the cabinet door relieves pressure and the cabinet door (20) detaches from the cabinet main body (10), the anti-detachment member is adapted to make the distance between the cabinet door (20) and the cabinet main body (10) not exceed a target distance.

3. The cabinet body according to claim 2, wherein the anti-detachment member comprises a first anti-detachment portion (40), a zipper (60) and a second anti-detachment portion (50). The first anti-detachment portion (40) is connected to the cabinet door (20), the second anti-detachment portion (50) is connected to the cabinet main body (10), and two ends of the zipper (60) are respectively connected to the first anti-detachment portion (40) and the second anti-detachment portion (50).

4. The cabinet body according to any one of claims 1 to 3, further comprising a separation portion (24). The separation portion (24) connects the cabinet door (20) and the cabinet main body (10), and is used for disassembling when the thermal management parameter in the receiving cavity (16) exceeds the second threshold, so that at least part of the cabinet door (20) has a gap with the cabinet main body (10).

5. The cabinet body according to any one of claims 1 to 3, wherein the pressure relief structure comprises an explosion-proof valve.

6. The cabinet body according to any one of claims 1 to 3, further comprising a pressure relief window (70). The pressure relief window (70) is provided on the top of the cabinet main body (10).

7. The cabinet body according to any one of claims 1 to 3, further comprising an exhaust member. The exhaust member is provided on the cabinet door (20) and / or the cabinet main body (10), and the exhaust member is used for realizing the internal and external gas exchange of the cabinet body.

8. The cabinet body according to claim 7, further comprising a detector. The detector is electrically connected to the exhaust member and is used for detecting the thermal management parameter in the receiving cavity (16); the exhaust member is used for opening when the thermal management parameter detected by the detector exceeds a third threshold, and the third threshold is less than the first threshold.

9. The cabinet body according to claim 4, wherein the thermal management parameter comprises at least one of smoke concentration, temperature and air pressure.

10. The cabinet body according to claim 9, wherein the thermal management parameter comprises the air pressure, and the second threshold comprises a pressure value F, satisfying: F = F1 * cosα / A, Among them, Let F1 be the bearing pressure when the separation part is disassembled, A be the area of the cabinet door, and α be the angle between the cabinet door and the cabinet body after the separation part is disassembled, satisfying: 10° ≤ α ≤ 20°.

11. An energy storage device, comprising a battery and a cabinet as described in any one of claims 1 to 10, wherein the battery is received in the accommodation cavity.

12. An energy storage system, the energy storage system comprising a plurality of energy storage devices as described in claim 11, and the plurality of energy storage devices are electrically connected.

13. An electrical equipment, comprising an electrical device and an energy storage device as described in claim 11 or an energy storage system as described in claim 12, and the energy storage device or the energy storage system supplies power to the electrical device.

Images