Energy storage cabinet and energy storage system

Abstract

The utility model provides an energy storage cabinet and an energy storage system. The energy storage cabinet comprises a cabinet body, an explosion venting cover and a connecting assembly. The cabinet body comprises a cabinet plate, and the cabinet plate is provided with an explosion venting port. The explosion venting cover is located outside the cabinet body and covers the explosion venting opening. And one side edge of the explosion venting cover is hinged with the cabinet plate. The connecting assembly is located between the cabinet plate and the explosion venting cover, one end of the connecting assembly is connected with the cabinet body, and the other end is connected with the explosion venting cover. The connecting assembly is used for limiting the maximum opening angle of the explosion venting cover and the cabinet plate. When explosion venting is not carried out, the explosion venting cover covers the explosion venting opening, so that the interior and the exterior of the energy storage cabinet are isolated. When explosion venting occurs, under the action of explosion pressure, the explosion venting cover is separated from the explosion venting opening and rotates around the cabinet plate, so that the explosion venting cover is far away from the explosion venting opening. The connecting assembly is connected with the cabinet plate and the explosion venting cover and can limit the maximum opening angle of the explosion venting cover and the cabinet plate, so that the explosion venting cover is prevented from excessively rotating due to explosion venting impact, directional release of pressure in the cabinet body is achieved, and then the explosion venting safety of the energy storage cabinet is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage system. Background Art

[0002] In energy storage power station systems, energy storage batteries are usually placed in energy storage cabinets. During thermal runaway of the battery, the electrolyte, positive and negative electrode materials, diaphragms, etc. inside the battery will undergo chemical and physical reactions, generating a large amount of flammable gas and releasing it into the energy storage cabinet. When flammable gas encounters sparks or high temperatures, it will explode, and the shock waves and thermal radiation generated by the explosion will pose a threat to the surrounding area of ​​the cabinet. Therefore, existing energy storage cabinets are usually equipped with explosion relief devices, which can prevent the energy storage cabinet from being subjected to large explosion pressure by directional release of shock waves and flames generated by the explosion.

[0003] However, the existing explosion relief device is generally set on the top of the energy storage cabinet, but the manufacturing cost of this setting method is relatively high. In addition, the explosion relief direction of the explosion relief device is usually toward the outside of the cabinet. When other devices are set around the cabinet or there are staff operating it, foreign objects may splash out of the cabinet when the cabinet is vented, which poses a safety risk. Utility Model Content

[0004] The present application provides an energy storage cabinet and an energy storage system to achieve the controllability of directional explosion relief, thereby improving the explosion relief safety of the energy storage cabinet.

[0005] In a first aspect, the present application provides an energy storage cabinet. The energy storage cabinet includes a cabinet body, an explosion venting cover, and a connecting assembly. Specifically, the cabinet body includes a cabinet panel, and the cabinet panel is provided with an explosion venting opening. The explosion venting cover is located outside the cabinet body, and covers the explosion venting opening. The explosion venting cover includes a side, and the side is hinged to the cabinet panel. The connecting assembly is located between the cabinet panel and the explosion venting cover, one end of the connecting assembly is connected to the cabinet body, and the other end is connected to the explosion venting cover. The connecting assembly is used to limit the maximum opening angle of the explosion venting cover and the cabinet panel.

[0006] The energy storage cabinet of the present application has an explosion relief function. When there is no explosion relief, the explosion relief cover covers the explosion relief port, which can isolate the inside and outside of the cabinet, thereby preventing liquid or water vapor from entering the inside of the cabinet through the explosion relief port, thereby improving the safety of the energy storage cabinet. When explosion relief occurs, under the action of the explosion pressure, the explosion relief cover rotates around the cabinet in a direction away from the explosion relief port, so that the inside and outside of the cabinet are connected, thereby realizing the explosion relief function of the energy storage cabinet. During the rotation of the explosion relief cover, since the two ends of the connecting assembly are respectively connected to the cabinet and the explosion relief cover, the connecting assembly can limit the maximum angle formed by the explosion relief cover and the cabinet, thereby preventing the explosion relief cover from excessive rotation due to the explosion relief impact, realizing the directional release of the internal pressure of the cabinet, and then improving the explosion relief safety of the energy storage cabinet.

[0007] In a possible implementation, the explosion venting cover further includes another side edge. The other side edge is located on both sides of the explosion venting cover relative to the one side edge. In this implementation, the two opposite side edges of the connecting assembly are respectively connected to the cabinet body. When the explosion venting cover rotates around one side edge, the other side edge is subjected to the pulling force of the connecting assembly, so that the explosion venting cover can be limited to the maximum opening angle, and at this time, the pulling force of the explosion venting cover on the connecting assembly is small.

[0008] The specific form of the above-mentioned connecting component is not limited. For example, the connecting component may include a rope, a multi-link mechanism or an electric screw push rod, etc.

[0009] In a possible implementation, the connection assembly may be a rope, one end of which is fixedly connected to the cabinet panel, and the other end of which is fixedly connected to the explosion venting cover, and the maximum opening angle between the explosion venting cover and the cabinet panel may be limited according to the length of the rope.

[0010] In a possible implementation, the connection assembly may be a multi-link mechanism. The connection assembly may specifically include two connecting rods. One end of one of the connecting rods is hinged to the cabinet panel, and the other end is hinged to one end of another connecting rod. The other end of the other connecting rod is hinged to the explosion venting cover. When the explosion venting cover covers the explosion venting port, the two connecting rods are respectively rotated and folded so as to be stored on the side of the explosion venting cover facing the inside of the cabinet. When explosion venting occurs, the two connecting rods are respectively rotated and unfolded, and the maximum opening angle between the explosion venting cover and the cabinet panel can be limited according to the length of the two connecting rods.

[0011] In one possible implementation, the connecting assembly may be an electric lead screw push rod. The connecting assembly may specifically include a motor, a lead screw and a push rod. The motor is arranged on a cabinet panel, the lead screw is connected to the output end of the motor and extends toward the explosion venting cover, the push rod is fixedly connected to the explosion venting cover and the push rod is transmission-connected to the lead screw. When the output end of the motor drives the lead screw to rotate, the push rod moves along the lead screw, thereby driving the explosion venting cover to rotate around the hinge. When the explosion venting cover is opened, the push rod can move to the end of the lead screw away from the cabinet panel, and the electric lead screw push rod can limit the maximum opening angle between the explosion venting cover and the cabinet panel. When the explosion venting cover is closed, the motor drives the lead screw to rotate, thereby causing the push rod to move to the end of the lead screw away from the explosion venting cover, so that the explosion venting cover is restored to a state of covering the explosion venting port.

[0012] The explosion venting cover of the present application can maintain the state of the explosion venting opening by being fixedly connected to the cabinet panel. Specifically, the explosion venting cover includes at least two side edges, one of which is hinged to the cabinet panel, and the other side is fixedly connected to the cabinet panel. One of the aforementioned side edges can be arranged adjacent to or opposite to the aforementioned other side edge.

[0013] In a possible implementation, the explosion venting cover is fixedly connected to the cabinet panel by an explosion venting bolt. Specifically, the explosion venting bolt includes a bolt and a gasket, the gasket is arranged on a side surface of the explosion venting cover away from the cabinet panel, the bolt passes through the gasket and the explosion venting cover, and the bolt is threadedly connected to the cabinet panel.

[0014] In a possible implementation, the cabinet panel is provided with a magnetic adsorption member, and the explosion venting cover is provided with a magnetic member, and the magnetic adsorption member is used for magnetic adsorption with the magnetic member.

[0015] In a possible implementation, a connecting strip is provided on the side wall of the explosion vent, and the connecting strip is used to be fixedly connected to the explosion vent cover to achieve a fixed connection between the explosion vent cover and the cabinet plate. A notch is provided on the surface of the connecting strip on the side facing away from the explosion vent cover. When explosion venting occurs, the notch of the connecting strip breaks under the action of the explosion impact force, thereby rendering the fixed connection between the explosion vent cover and the cabinet plate ineffective.

[0016] In the energy storage cabinet of the present application, the number of explosion-proof covers is not limited. For example, in one possible implementation, the energy storage cabinet may include an explosion-proof cover, and the rotation direction of the explosion-proof cover is not limited. In another possible implementation, the energy storage cabinet may include two explosion-proof covers. The two explosion-proof covers are arranged side by side and are jointly covered on the explosion-proof opening. Among the two explosion-proof covers, the side of one explosion-proof cover away from the other explosion-proof cover is hinged to the cabinet plate, and the side of the other explosion-proof cover away from one of the explosion-proof covers is hinged to the cabinet plate, thereby realizing the double-opening design of the explosion-proof cover.

[0017] In a possible implementation, the energy storage cabinet may further include a fireproof cloth. Fireproof cloth may be provided at both ends of one side of the explosion venting cover. The cabinet plate and the explosion venting cover are respectively connected to the fireproof cloth to prevent the explosion flame from spraying out from the side between the explosion venting cover and the cabinet plate.

[0018] In a second aspect, the present application provides an energy storage system. The energy storage system includes an energy storage cabinet and a power converter according to the first aspect. The power converter is used to convert the AC power input from the external AC power supply into DC power and output it to the energy storage cabinet, and / or the power converter is used to convert the DC power output from the energy storage cabinet into AC power and output it to a load or a power grid. The energy storage cabinet of the present application has an explosion relief function. When there is no explosion relief, the explosion relief cover covers the explosion relief port, which can isolate the inside and outside of the cabinet, thereby preventing liquid or water vapor from entering the inside of the cabinet through the explosion relief port, thereby improving the safety of the energy storage cabinet. When explosion relief occurs, under the action of the explosion pressure, the explosion relief cover rotates around the cabinet in a direction away from the explosion relief port, so that the inside and outside of the cabinet are connected, thereby realizing the explosion relief function of the energy storage cabinet. During the rotation of the explosion relief cover, since the two ends of the connecting assembly are respectively connected to the cabinet and the explosion relief cover, the connecting assembly can limit the maximum angle formed by the explosion relief cover and the cabinet, thereby preventing the explosion relief cover from excessive rotation due to the explosion relief impact, realizing the directional release of the pressure inside the cabinet, and thus improving the safety of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an energy storage cabinet provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the cooperation between the explosion venting cover and the cabinet panel provided in an embodiment of the present application;

[0021] Figure 3 Another schematic diagram of the coordination between the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0022] Figure 4 for Figure 2 Partial schematic diagram of the middle explosion vent cover and cabinet panel;

[0023] Figure 5 for Figure 3 Partial schematic diagram of the middle explosion vent cover and cabinet panel;

[0024] Figure 6 Another schematic diagram of the coordination between the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0025] Figure 7 for Figure 6 Partial schematic diagram of the middle explosion vent cover and cabinet panel;

[0026] Figure 8 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0027] Fig. 9 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0028] Fig.10A schematic diagram of the structure of an explosion relief bolt provided in an embodiment of the present application;

[0029] Fig.11 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0030] Fig.12 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application;

[0031] Fig.13 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application.

[0032] Reference numerals:

[0033] 10-Energy storage cabinet

[0034] 11-Cabinet

[0035] 12-Explosion vent cover

[0036] 13- Connecting components

[0037] 14-Explosion relief bolt

[0038] 15- Fireproof cloth

[0039] 111-Cabinet board

[0040] 112-Explosion vent

[0041] 113-Connecting strip

[0042] 131-First connecting rod

[0043] 132-Second connecting rod

[0044] 133-Motor

[0045] 134-Screw

[0046] 135-Putter

[0047] 141-Bolt

[0048] 142-Gasket

[0049] 12a-First explosion relief cover

[0050] 12b-Second explosion relief cover DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0052] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0053] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0054] In order to facilitate the understanding of the energy storage cabinet and energy storage system provided in the embodiment of the present application, the application scenario is described below. The energy storage battery is an important energy storage device that can provide electrical energy for the load. The energy storage battery is generally arranged in an electrochemical energy storage cabinet or chassis, which is convenient for flexibly adjusting the position of the energy storage battery. In this application, the energy storage cabinet and the energy storage chassis are referred to as energy storage cabinets. The energy storage battery may experience thermal runaway and has the risk of explosion. The energy storage battery explodes in the energy storage cabinet, causing the shell of the energy storage cabinet to disintegrate. The shock wave, heat radiation generated by the explosion, and the splashing of debris generated by the disintegration of the cabinet pose a threat to people or objects near the electrochemical cabinet. Therefore, the energy storage cabinet is provided with an explosion relief door or explosion relief window, which can release the shock wave and flame generated by the explosion in a directional manner, and can prevent the cabinet shell from being disintegrated due to the large explosion pressure. The opening angle of the cabinet door on the existing energy storage cabinet is too large, which will cause harm to the surrounding personnel or equipment, and therefore, the safety is low. To this end, the present application provides an energy storage cabinet and an energy storage system to achieve the controllability of directional explosion relief, thereby improving the safety of explosion relief. The energy storage cabinet and energy storage system in the technical solution of the present application are explained below with reference to the accompanying drawings.

[0055] Figure 1 A schematic diagram of an energy storage cabinet provided in an embodiment of the present application, Figure 2 A schematic diagram of the cooperation between the explosion venting cover and the cabinet panel provided in the embodiment of the present application is shown in FIG. Figure 3 Another schematic diagram of the cooperation between the explosion venting cover and the cabinet panel provided in the embodiment of the present application, wherein: Figure 2 The explosion vent cover is in the closed state. Figure 3 The explosion vent cover is in the open state. Figure 1 , Figure 2 and Figure 3 As shown, the energy storage cabinet 10 includes a cabinet body 11, an explosion venting cover 12 and a connecting assembly 13. Specifically, the cabinet body 11 includes a top plate, a bottom plate and four side plates, the top plate and the bottom plate are arranged in parallel, and the four side plates are located between the top plate and the bottom plate, and are respectively arranged perpendicular to the top plate, so that the four side plates, the top plate and the bottom plate are enclosed to form a cabinet body 11 to accommodate equipment such as energy storage batteries. In the present application, the side plate can be used as a cabinet plate 111 of the cabinet body 11 for explosion venting. Specifically, the cabinet plate 111 has an explosion venting port 112. The explosion venting cover 12 is located outside the cabinet body 11, and a side plate of the explosion venting cover 12 is hinged to the cabinet plate 111, so that the explosion venting cover 12 can rotate around the hinge. When the explosion venting cover 12 is rotated to a position covering the explosion venting port 112, the explosion venting cover 12 can be covered at the explosion venting port 112 to isolate the inside and outside of the cabinet body 11. The connecting assembly 13 is disposed between the cabinet plate 111 and the explosion venting cover 12, wherein one end of the connecting assembly 13 is connected to the cabinet body 11, and the other end is connected to the explosion venting cover 12. When the explosion venting cover 12 rotates in a direction away from the explosion venting port 112, the connecting assembly 13 can limit the maximum opening angle of the explosion venting cover 12 and the cabinet plate 11.

[0056] When the energy storage cabinet 10 does not explode, the explosion venting cover 12 is in a closed state, so that the inside and outside of the cabinet 11 are not connected, thereby preventing liquid or water vapor from entering the inside of the cabinet 11 through the explosion venting port 112, thereby improving the safety of the energy storage cabinet 10. When the energy storage cabinet 10 explodes, under the action of the explosion pressure, the explosion venting cover 12 opens, so that the inside and outside of the cabinet 11 are connected through the explosion venting port 112, thereby achieving the explosion venting of the energy storage cabinet 10. During the rotation of the explosion venting cover 12, since the two ends of the connecting component 13 are respectively connected to the cabinet 11 and the explosion venting cover 12, the connecting component 13 can limit the maximum angle formed by the explosion venting cover 12 and the cabinet 11, thereby preventing the explosion venting cover 12 from excessively rotating due to the explosion venting impact, achieving the directional release of the internal pressure of the cabinet 11, and then improving the explosion venting safety of the energy storage cabinet 10.

[0057] Figure 4 for Figure 2 Partial schematic diagram of the central explosion vent cover and cabinet panel. Figure 5 for Figure 3 Partial schematic diagram of the central explosion vent cover and cabinet panel, where: Figure 4 The explosion vent cover is in the closed state. Figure 5 The explosion vent cover is in the open state. Figure 4 and Figure 5As shown, in some embodiments, the explosion venting cover 12 can be a rectangular cover plate. The explosion venting cover 12 includes two sides, namely a first side L1 and a second side L2. The first side L1 is hinged to the cabinet panel 111, and the second side L2 is connected to the connecting component 13, so that when the explosion venting cover 12 rotates around the first side L1, the second side L2 is subjected to the pulling force of the connecting component 13. In one embodiment, the first side L1 can also be adjacent to the second side L2. In another embodiment, the first side L1 can be located on both sides of the explosion venting cover 12 relative to the second side L2, and at this time, the connecting component 13 is subjected to less pulling force from the explosion venting cover 12.

[0058] In an embodiment of the present application, the explosion venting cover 12 can maintain the state of covering the explosion venting port 112 by being fixedly connected to the cabinet board 111. When explosion venting occurs, under the action of the explosion impact force, the fixed connection between the explosion venting cover 12 and the cabinet board 111 fails, so that the explosion venting cover 12 rotates around the cabinet board 111 at the hinged connection. The connecting component 13 limits the rotation angle of the explosion venting cover 12, so that the explosion venting cover 12 and the cabinet board 111 maintain an angle setting, thereby preventing the explosion venting cover 12 from excessively rotating due to the explosion venting impact, and realizing the directional release of the internal pressure of the cabinet 11 through the explosion venting port 112, so as to realize the controllability of explosion venting. Specifically, one end of the connecting component 13 is fixed to the second side L2 of the explosion venting cover 12, and the other end is fixed to the cabinet board 111. The specific form of the connecting component 13 is not limited, for example, the connecting component 13 may include a rope, a connecting rod slider assembly, a multi-link mechanism hinge or rope, etc.

[0059] like Figure 5 As shown, in one embodiment, the connecting component 13 can be a rope. One end of the rope is fixedly connected to the cabinet plate 111, and the other end of the rope is fixedly connected to the explosion venting cover 12. When the explosion venting cover 12 is in an open state, the length of the rope can define the angle between the explosion venting cover 12 and the cabinet plate 111.

[0060] In some other embodiments, the connecting assembly 13 may also be a multi-link mechanism. Figure 6 Another schematic diagram of the coordination between the explosion venting cover and the cabinet panel provided in the embodiment of the present application is shown in FIG. Figure 7 for Figure 6 Partial schematic diagram of the central explosion vent cover and cabinet panel, where: Figure 6 and Figure 7 The explosion vent cover is in the open state. Figure 6 and Figure 7As shown, in a specific embodiment, the connecting assembly 13 can be a double-link mechanism. The double-link mechanism includes two links, namely a first link 131 and a second link 132. Among them, one end of the first link 131 is hinged to the cabinet plate 111, the other end of the first link 131 is hinged to one end of the second link 132, and the other end of the second link 132 is hinged to the explosion venting cover 12. When the explosion venting cover 12 covers the explosion venting port 112, the first link 131 and the second link 132 are rotated respectively and the first link 131 and the second link 132 are folded so that the first link 131 and the second link 132 are stored on the side of the explosion venting cover 12 facing the inside of the cabinet 11. When explosion venting occurs, the explosion venting cover 12 rotates in a direction away from the explosion venting 112, the first connecting rod 131 and the second connecting rod 132 rotate respectively and the first connecting rod 131 and the second connecting rod 132 are unfolded, and according to the length of the first connecting rod 131 and the second connecting rod 132, the maximum opening angle between the explosion venting cover 12 and the cabinet panel 111 can be limited.

[0061] Figure 8 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application, wherein: Figure 8 The explosion venting cover is in an open state. As shown in Figure 8, in a specific embodiment, the connecting assembly 13 can also be an electric lead screw push rod. The electric lead screw push rod includes a motor 133, a lead screw 134 and a push rod 135. Among them, the motor 133 is arranged on the cabinet plate 111, the lead screw 134 is connected to the output end of the motor 133 and the lead screw 134 extends toward the explosion venting cover 12, and the push rod 135 is fixedly connected to the explosion venting cover 12 and the push rod 135 is transmission-connected to the lead screw 134. When the output end of the motor 133 drives the lead screw 134 to rotate, the push rod 135 moves along the lead screw 134, thereby driving the explosion venting cover 12 to rotate around the hinge. When the explosion venting cover 12 is opened, the push rod 135 can move to the end of the lead screw 134 away from the cabinet plate 111, and the electric lead screw push rod can limit the maximum opening angle between the explosion venting cover 12 and the cabinet plate 111. When the explosion venting cover 12 is closed, the motor 133 drives the lead screw 134 to rotate, so that the push rod 135 moves to the end of the lead screw 134 away from the explosion venting cover 12 , so that the explosion venting cover 12 returns to a state of covering the explosion venting opening 112 .

[0062] The fixed connection position and the hinged position of the explosion venting cover 12 and the cabinet panel 111 of the present application are different. Fig. 9 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application. Fig. 9 As shown, in one embodiment, the explosion venting cover 12 has a first side L1 and a second side L2 opposite to each other. The first side L1 is hinged to the cabinet panel 111. The explosion venting cover 112 is provided with a connecting strip 113, which can be used to be fixedly connected to the second side L2. One end of the connecting component 13 is connected to the connecting strip 113, and the other end is connected to the second side L2.

[0063] In the present application, the connection method between the connecting strip 113 and the second side L12 is not limited, for example, it may include bolt connection, magnetic connection or bonding, etc. Fig.10 A schematic diagram of the structure of the explosion relief bolt provided in the embodiment of the present application. Fig.10 As shown, in one embodiment, the energy storage cabinet 10 further includes an explosion relief bolt 14, and the connecting strip 113 is fixedly connected to the second side L2 by the explosion relief bolt 14. Specifically, the explosion relief bolt 14 includes a bolt 141 and a gasket 142. Among them, the gasket 142 is arranged on the side surface of the explosion relief cover 12 away from the cabinet plate 111, and the bolt 141 penetrates the gasket 142 and the explosion relief cover 12, and is threadedly connected to the cabinet plate 111. In one embodiment, the gasket 142 can be an arc-shaped gasket. When an explosion occurs inside the cabinet 11, under the action of the pressure generated by the explosion inside the cabinet 11, the explosion relief cover 12 causes the arc-shaped gasket to deform, so that the function of the explosion relief bolt 14 to fix the explosion relief cover 12 with the cabinet plate 111 fails, thereby separating the explosion relief cover 12 from the cabinet plate 111 at the fixed connection position, and the shock wave or flame generated by the explosion inside the cabinet 11 can be released to the outside of the cabinet 11 through the explosion relief port 112 to achieve explosion relief. In this embodiment, the material of the gasket 142 may be selected according to a preset pressure so that the gasket 142 may be deformed under the action of the preset pressure.

[0064] In another embodiment, the connection strip 113 is connected to the second side L2 by magnetic attraction. Specifically, the connection strip 113 is provided with a magnetic adsorption member, and a magnetic member is provided on the side surface of the second side L2 facing the cabinet panel 111, and the magnetic adsorption member is used for magnetic adsorption with the magnetic member to achieve a fixed connection between the explosion venting cover 12 and the cabinet panel 111. When an explosion occurs inside the cabinet 11, under the action of the pressure generated by the explosion inside the cabinet 11, the magnetic adsorption member is separated from the magnetic member, so that the fixed connection between the explosion venting cover 12 and the cabinet panel 111 is invalid. In this embodiment, according to the preset pressure, the material for the magnetic adsorption member and the magnetic member can be selected so that the magnetic adsorption member and the magnetic member can be separated under the action of the preset pressure.

[0065] In the above embodiment, when the internal pressure of the cabinet 11 reaches the preset pressure, the fixed connection between the explosion venting cover 12 and the cabinet plate 111 can be invalidated by the fixed connection method itself, thereby achieving explosion venting. In addition, the energy storage cabinet 10 can also achieve explosion venting in other ways. In another embodiment, a notch is provided on the surface of the side of the connecting strip 113 that faces away from the explosion venting cover 12. Under the action of the preset pressure, the connecting strip 113 breaks at the notch, thereby invalidating the fixed connection between the explosion venting cover 12 and the cabinet plate 111. In this embodiment, according to the preset pressure, the material of the connecting strip 113 can be selected so that under the action of the preset pressure, the connecting strip 113 can break at the notch.

[0066] Fig.11 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application. Fig.11 As shown, in one embodiment, the energy storage cabinet 10 may further include a fireproof cloth 15. The fireproof cloth 15 is located between the cabinet plate 111 and the explosion relief cover 12, and the cabinet plate 111, the explosion relief cover 12 and the connecting assembly 13 are respectively connected to the fireproof cloth 15. In other words, the fireproof cloth 15 is provided on both sides of the explosion relief cover 12, so as to prevent the flame from spraying out from the side during explosion relief, and further realize directional explosion relief.

[0067] In the energy storage cabinet 10 of the present application, the opening directions of the explosion venting cover 12 and the cabinet plate 111 are not limited. Fig.11 As shown, the opening between the explosion venting cover 12 and the cabinet plate 111 may face upward, that is, the bottom side edge of the explosion venting cover 12 is hinged to the cabinet plate 111 . Fig.12 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application. Fig.12 As shown, the opening between the explosion venting cover 12 and the cabinet plate 111 may face downward, that is, the top side edge of the explosion venting cover 12 is hinged to the cabinet plate 111 . Fig.13 Another partial schematic diagram of the explosion venting cover and the cabinet panel provided in the embodiment of the present application. Fig.13 As shown, the opening between the explosion venting cover 12 and the cabinet board 111 can face the left side, that is, the right side of the explosion venting cover 12 is hinged to the cabinet board 111. Alternatively, the opening between the explosion venting cover 12 and the cabinet board 111 can face the right side, that is, the left side of the explosion venting cover 12 is hinged to the cabinet board 111.

[0068] In the energy storage cabinet 10 of the present application, the number of explosion relief covers 12 is not limited. Fig.12 As shown, in some embodiments, the energy storage cabinet 10 may include an explosion relief cover 12, and the rotation direction of the explosion relief cover 12 is not limited. Fig.13 As shown, in some other embodiments, the energy storage cabinet 10 may include a first explosion relief cover 12a and a second explosion relief cover 12b. The first explosion relief cover 12a and the second explosion relief cover 12b are arranged opposite to each other and are jointly covered on the explosion relief port 112. The side of the first explosion relief cover 12a away from the second explosion relief cover 12b is hinged to the cabinet plate 111, and the side of the second explosion relief cover 12b away from the first explosion relief cover 12a is hinged to the cabinet plate 111, that is, the first explosion relief cover 12a and the second explosion relief cover 12b are arranged in a split manner. In this implementation, the energy storage cabinet 10 also includes a first connecting component 13a and a second connecting component 13b. The first connecting component 13a connects the first explosion relief cover 12a and the cabinet plate 111, and the second connecting component 13b connects the second explosion relief cover 12b and the cabinet plate 111.

[0069] Based on the same technical concept, the present application provides an energy storage system. The energy storage system includes an energy storage cabinet 10 and a power converter. The power converter is used to convert the AC power input from the external AC power supply into DC power, and output the DC power to the energy storage cabinet 10, and / or the power converter is used to convert the DC power output from the energy storage cabinet 10 into AC power, and output the AC power to the load or the power grid. The energy storage system of the present application has an explosion relief function. When the energy storage cabinet 10 does not explode, the explosion relief cover 12 is in a closed state, so that the inside and outside of the cabinet 11 are not connected, thereby preventing liquid or water vapor from entering the inside of the cabinet 11 through the explosion relief port 112, thereby improving the safety of the energy storage cabinet 10. When the energy storage cabinet 10 explodes, under the action of the explosion pressure, the explosion relief cover 12 is opened, so that the inside and outside of the cabinet 11 are connected through the explosion relief port 112, and the explosion relief of the energy storage cabinet 10 is realized. During the rotation of the explosion-proof cover 12, since the two ends of the connecting component 13 are respectively connected to the cabinet 11 and the explosion-proof cover 12, the connecting component 13 can limit the maximum angle formed by the explosion-proof cover 12 and the cabinet 11, thereby preventing the explosion-proof cover 12 from excessively rotating due to the explosion-proof impact, achieving the directional release of the internal pressure of the cabinet 11, and thus improving the explosion-proof safety of the energy storage system.

[0070] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An energy storage cabinet, characterized in that: The energy storage cabinet comprises a cabinet body, an explosion relief cover and a connection assembly, wherein: The cabinet body includes a cabinet plate, and the cabinet plate is provided with an explosion vent; The explosion relief cover is located outside the cabinet and covers the explosion relief opening; one side of the explosion relief cover is hinged to the cabinet panel; The connecting component is located between the cabinet panel and the explosion-proof cover, one end of the connecting component is connected to the cabinet body, and the other end is connected to the explosion-proof cover; the connecting component includes a rope, a multi-link mechanism or an electric screw push rod; the connecting component is used to limit the maximum opening angle of the explosion-proof cover and the cabinet panel.

2. The energy storage cabinet according to claim 1, characterized in that: The explosion venting cover comprises another side edge, the other side edge is located on both sides of the explosion venting cover opposite to the one side edge, and the other end of the connecting assembly is connected to the other side edge.

3. The energy storage cabinet according to claim 1 or 2, characterized in that: The connecting component is a rope, one end of the rope is fixedly connected to the cabinet board, and the other end of the rope is fixedly connected to the explosion-proof cover.

4. The energy storage cabinet according to claim 1 or 2, characterized in that: The connecting assembly is a multi-link mechanism, which includes two links, one end of one of the two links is hinged to the cabinet panel, the other end of one of the links is hinged to one end of the other link, and the other end of the other link is hinged to the explosion relief cover.

5. The energy storage cabinet according to claim 1 or 2, characterized in that: The connecting assembly is an electric lead screw push rod, which includes a motor, a lead screw and a push rod. The motor is arranged on the cabinet panel, the lead screw is connected to the output end of the motor and extends toward the explosion-proof cover, the push rod is fixedly connected to the explosion-proof cover and the push rod is transmission-connected to the lead screw.

6. The energy storage cabinet according to claim 1 or 2, characterized in that: The explosion relief cover is connected to the cabinet plate via explosion relief bolts; The explosion-proof bolt comprises a bolt and a gasket, wherein the gasket is arranged on a surface of the explosion-proof cover which is away from the cabinet plate, and the bolt passes through the gasket and the explosion-proof cover and is threadedly connected to the cabinet plate.

7. The energy storage cabinet according to claim 1 or 2, characterized in that: The cabinet plate is provided with a magnetic adsorption component, and the explosion-proof cover is provided with a magnetic component, and the magnetic adsorption component is used for magnetic adsorption with the magnetic component.

8. The energy storage cabinet according to claim 1 or 2, characterized in that: A connecting strip is provided on the side wall of the explosion vent, and the connecting strip is used to be connected to the explosion vent cover. A surface of the connecting strip on one side facing away from the explosion vent cover is provided with a notch.

9. The energy storage cabinet according to claim 1 or 2, characterized in that: The energy storage cabinet includes two explosion-proof covers, which are arranged side by side and jointly cover the explosion-proof opening, wherein a side of one explosion-proof cover away from the other explosion-proof cover is hinged to the cabinet plate, and a side of the other explosion-proof cover away from the one explosion-proof cover is hinged to the cabinet plate.

10. The energy storage cabinet according to claim 1 or 2, characterized in that: Fireproof cloths are respectively arranged at both ends of the one side, and the cabinet board and the explosion-proof cover are respectively connected to the fireproof cloths.

11. An energy storage system, characterized in that: The energy storage system comprises an energy storage cabinet and a power converter as described in any one of claims 1 to 10, wherein the power converter is used to convert the AC power input from an external AC power supply into DC power and output it to the energy storage cabinet, and / or the power converter is used to convert the DC power output from the energy storage cabinet into AC power and output it to a load or a power grid.

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