Energy storage cabinet

Abstract

The utility model provides an energy storage cabinet, and belongs to the technical field of energy storage. The energy storage cabinet comprises a box body, a plurality of battery clusters, an explosion venting plate and a protection plate; the plurality of battery clusters are arranged in the box body, and the explosion venting plate is arranged above the plurality of battery clusters in the box body; the protection plate is fixed to the top of the box body and covers the explosion venting plate, a gap is formed between the protection plate and the explosion venting plate, and a first exhaust port is formed in the position, corresponding to the gap between the protection plate and the explosion venting plate, of at least one side face of the box body. By adopting the explosion venting device, the explosion venting plate can be prevented from being eroded by wind, snow and rainwater, so that the leakproofness of the battery compartment is ensured, and the explosion venting failure of the explosion venting plate can be avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of energy storage, in particular to an energy storage cabinet. BACKGROUND

[0002] The energy storage cabinet such as an energy storage container is a device taking a box as a carrier, and integrating an energy storage system inside the box. The energy storage cabinet has high portability, strong flexibility and high safety, and becomes a future energy storage solution.

[0003] The battery is an important and main component in the energy storage cabinet, and is responsible for the storage and release of electric energy. However, under abnormal conditions such as high temperature, overcharge or overdischarge, the battery will release a large amount of heat and a large amount of flammable gas, and in serious cases, will cause the energy storage cabinet to explode. Therefore, some energy storage cabinets are provided with a venting plate on the top, which can be broken when the air pressure in the energy storage cabinet is relatively high, so as to release the gas in the energy storage cabinet to the outside, thereby avoiding explosion.

[0004] However, the energy storage cabinet with the top venting plate may also fail to vent, especially the energy storage cabinet arranged in the area with snow all year round. The energy storage cabinet is covered with snow all year round, which may cause the venting plate to fail to open and vent. CONTENT OF THE INVENTION

[0005] The present disclosure provides an energy storage cabinet, which can improve the reliability of the venting plate in the energy storage cabinet, and avoid the failure of the venting plate to vent.

[0006] The present disclosure provides an energy storage cabinet, which comprises a box, a plurality of battery clusters, a venting plate and a protective plate.

[0007] Each battery cluster comprises a plurality of batteries arranged from bottom to top, and the plurality of battery clusters are arranged in the box. The venting plate is arranged above the plurality of battery clusters in the box.

[0008] The protective plate is fixed to the top of the box and covers the venting plate. The protective plate and the venting plate have a spacing therebetween. At least one side surface of the box has a first exhaust port at a position corresponding to the spacing between the protective plate and the venting plate.

[0009] In the scheme shown in the present disclosure, the venting plate is fixed inside the box, and the venting plate is further covered by the protective plate, which can avoid the exposure of the venting plate, thereby avoiding the erosion of the venting plate by wind, snow and water, to ensure the airtightness of the battery compartment. The container with the venting plate inside the box can be applied in the environment with snow all year round. Since the snow covers the protective plate rather than the venting plate, the snow will not affect the opening of the venting plate, thereby avoiding the failure of the venting plate to vent.

[0010] In a possible implementation, in the cabinet, the upper area corresponding to each battery cluster includes a first area where the explosion venting plate is arranged, and a second area where the explosion venting plate is not arranged, that is, some areas of the upper part of the battery cluster are arranged with the explosion venting plate, and some areas are not arranged with the explosion venting plate.

[0011] Then, the protection plate includes a first protection area and a second protection area, a projection of the first protection area on a plane where the explosion venting plate is located completely covers the explosion venting plate, and a projection of the second protection area on the plane where the explosion venting plate is located does not overlap with the explosion venting plate; it can also be understood that the first protection area of the protection plate is opposite to the area where the explosion venting plate is arranged, and the second protection area of the protection plate is opposite to the area where the explosion venting plate is not arranged.

[0012] In the scheme shown in the present disclosure, the protection plate has a second exhaust port penetrating through the thickness direction of the protection plate in the second protection area.

[0013] In the scheme shown in the present disclosure, the second protection area above the explosion venting plate can be provided with an exhaust port as a second exhaust port, and in the pressure relief, part of the gas in the battery compartment is discharged from the first exhaust port corresponding to the spacing between the explosion venting plate and the protection plate on one side of the cabinet, and the other part is discharged from the second exhaust port on the second protection area, which is conducive to the rapid release of the gas in the battery compartment to the outside to quickly balance the gas pressure in and outside the battery compartment and avoid explosion of the container.

[0014] In a possible implementation, the protection plate is a mesh area in the second protection area, and the mesh serves as the second exhaust port.

[0015] In the scheme shown in the present disclosure, the second protection area above the explosion venting plate can be a mesh area, and a large number of meshes in the mesh area can serve as the second exhaust port.

[0016] In the scheme shown in the present disclosure, whether it is the first exhaust port or the second exhaust port, it is located at the top of the cabinet, and the gas released from the battery compartment diffuses upward or obliquely upward, which can avoid the gas from being sprayed to the person who is going to rescue.

[0017] In a possible implementation, the protection plate is fixed in an inclined manner at the top of the cabinet.

[0018] In the scheme shown in the present disclosure, the protection plate is fixed in an inclined manner at the top of the cabinet, which is conducive to the rain, snow, sand and dust falling on the protection plate to slide down the slope of the protection plate and get away from the protection plate, thereby protecting the protection plate and avoiding erosion of the protection plate by rain, snow and sand for a long time.

[0019] In a possible implementation, the height difference is between a first side and a second side of the protection plate opposite to each other along a length direction or a width direction of the cabinet.

[0020] In a possible implementation, a middle position of the protection plate is higher than the first side and the second side of the protection plate opposite to each other, wherein the first side and the second side of the protection plate are two sides opposite to each other along a length direction of the cabinet, or are two sides opposite to each other along a width direction of the cabinet.

[0021] In the scheme shown in the present disclosure, the height difference between the first side and the second side of the protection plate opposite to each other, or the height difference between the middle position of the protection plate and the first side and the second side of the protection plate opposite to each other, is greater than or equal to 30 mm and less than or equal to 100 mm, for example, the height difference can be 30 mm or 40 mm. In this way, the transportation of the energy storage cabinet is not affected, and it is also beneficial to make the objects on the protection plate fall off.

[0022] For example, the middle position of the protection plate along the length direction is higher than the two sides along the length direction, and for example, the middle position of the protection plate along the width direction is higher than the two sides along the width direction, so that the protection plate as a whole forms a ridge type.

[0023] It should be noted that if the first protection area and the second protection area of the protection plate are distributed along the width direction, that is, the first protection area is on one side of the center line of the protection plate along the length direction, and the second protection area is on the opposite side of the center line of the protection plate, in this scheme, the middle position of the protection plate can be the junction of the first protection area and the second protection area.

[0024] In a possible implementation, the distance between the explosion venting plate and the uppermost battery mounting position is greater than or equal to 100 mm and less than or equal to 150 mm.

[0025] In the scheme shown in the present disclosure, after the battery is loaded into the battery mounting position, the distance between the upper wall of the battery and the lower surface of the explosion venting plate is greater than or equal to 100 mm and less than or equal to 150 mm, which can not only make the gas in the battery compartment push the explosion venting plate open during explosion venting, but also not reduce the number of layers of the battery mounting position in the vertical direction.

[0026] In a possible implementation, the number of explosion venting plates is multiple, and at least one explosion venting plate is arranged above each battery cluster.

[0027] In the scheme shown in the present disclosure, at least one explosion venting plate is arranged above each battery cluster, and multiple explosion venting plates are arranged above multiple battery clusters. Compared with a whole explosion venting plate arranged above multiple battery clusters, the air pressure in the cabinet during explosion venting is more likely to push the explosion venting plate open for venting.

[0028] In a possible implementation, the top of the cabinet includes a front upper longitudinal beam parallel to the length direction of the cabinet, a front lower longitudinal beam, a rear upper longitudinal beam, and a rear lower longitudinal beam, the front upper longitudinal beam and the front lower longitudinal beam are arranged on the front side of the cabinet and arranged in an up-down manner, and the rear upper longitudinal beam and the rear lower longitudinal beam are arranged on the rear side of the cabinet and arranged in an up-down manner.

[0029] The explosion venting plate is fixed on the front lower longitudinal beam and the rear lower longitudinal beam, and the protective plate is fixed on the front upper longitudinal beam and the rear upper longitudinal beam.

[0030] The gap between the front upper longitudinal beam and the front lower longitudinal beam, and the gap between the rear upper longitudinal beam and the rear lower longitudinal beam, serve as the first exhaust port.

[0031] In the scheme shown in the present disclosure, the top of the cabinet has two longitudinal beams arranged in an up-down manner on the front side and two longitudinal beams arranged in an up-down manner on the rear side, so that the explosion venting plate is fixed on the front lower longitudinal beam and the rear lower longitudinal beam, and the protective plate is fixed on the front upper longitudinal beam and the rear upper longitudinal beam, and a gap is formed between the explosion venting plate and the protective plate. Then, the gap between the front upper longitudinal beam and the front lower longitudinal beam, and the gap between the rear upper longitudinal beam and the rear lower longitudinal beam, can serve as the first exhaust port.

[0032] In a possible implementation, the energy storage cabinet further includes multiple fixing plates, one fixing plate is arranged above each battery cluster in the multiple battery clusters, and each fixing plate is fixed on the front lower longitudinal beam, the rear lower longitudinal beam, and the battery rack of the corresponding battery cluster.

[0033] Each fixing plate has at least one mounting port penetrating the thickness direction of the fixing plate, and one explosion venting plate is fixed in each mounting port of each fixing plate.

[0034] In the scheme shown in the present disclosure, the explosion venting plate is fixed in the cabinet through the fixing plate. In the assembly of the container, the explosion venting plate can be first fixed on the fixing plate, then the fixing plate with the explosion venting plate is assembled above each battery cluster, and finally the protective plate is fixed on the top of the cabinet. This is conducive to improving the assembly efficiency of the container.

[0035] In a possible implementation, the gap between the front upper longitudinal beam and the front lower longitudinal beam, and the gap between the rear upper longitudinal beam and the rear lower longitudinal beam are covered with a mesh plate, and the meshes on the mesh plate serve as the first exhaust port.

[0036] In the scheme shown in the present disclosure, the meshes on the mesh plate serve as the exhaust port, which can not only realize exhaust but also block large-particle objects from invading between the explosion venting plate and the protection plate. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a container provided by an exemplary embodiment of the present disclosure;

[0038] Figure 2 is an exploded structural schematic diagram of a container provided by an exemplary embodiment of the present disclosure;

[0039] Figure 3 is another exploded structural schematic diagram of a container provided by an exemplary embodiment of the present disclosure;

[0040] Figure 4 is a structural schematic diagram of an explosion venting plate and a fixing plate before being fixed provided by an exemplary embodiment of the present disclosure;

[0041] Figure 5 is a partial schematic diagram of a container body at the top provided by an exemplary embodiment of the present disclosure;

[0042] Figure 6 is a structural schematic diagram of an explosion venting plate and a protection plate provided by an exemplary embodiment of the present disclosure.

[0043] REFERENCE SIGNS

[0044] 1, container body; 11, front upper longitudinal beam; 12, front lower longitudinal beam; 13, rear upper longitudinal beam; 14, rear lower longitudinal beam.

[0045] 2, explosion venting plate; 3, protection plate; 31, first protection area; 32, second protection area; 4, fixing plate; 41, mounting port. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the present disclosure embodiments will be further described in detail below with reference to the drawings.

[0047] The present embodiment relates to an energy storage cabinet, which is a cabinet or a body integrated with an energy storage system. The energy storage cabinet is used to store energy and release the stored energy when needed, so the battery for storing and releasing electric energy is an important and main component in the energy storage cabinet.

[0048] Because the battery will release a large amount of heat and a large amount of flammable gas under overcharge, overdischarge or high temperature environment, the energy storage cabinet needs to have a venting function, for example, a venting plate is installed on the top of the energy storage cabinet, the venting plate has a weak force position, when the air pressure in the energy storage cabinet reaches a certain degree, such as when the air pressure in the energy storage cabinet is greater than the maximum strength at the weak force position of the venting plate, the venting plate is broken, the gas in the energy storage cabinet is released outward, thereby reducing the risk of explosion of the energy storage cabinet.

[0049] However, the venting plate is arranged on the top of the energy storage cabinet and exposed to the outside, under the erosion of wind, snow and rain, the reliability of the venting plate will decrease, for example, cracks are generated at the weak force position of the venting plate, thereby reducing the airtightness of the energy storage cabinet. Moreover, in winter or in areas with perennial snow, snow covers the venting plate, then when the pressure in the energy storage cabinet is relatively large and needs to be released, it may be difficult to open the venting plate, thereby causing the venting failure.

[0050] Therefore, the embodiment provides an energy storage cabinet, the venting plate of the energy storage cabinet is arranged inside the cabinet, the venting plate is protected by a protection plate above, which can avoid the erosion of wind, snow and rain, when venting is needed, the venting plate is broken, the gas is discharged through the exhaust port between the venting plate and the protection plate, and pressure release is realized. The energy storage cabinet has the venting function and is not prone to venting failure of the venting plate and decrease in reliability of the venting plate. The features of the energy storage cabinet will be introduced below.

[0051] As shown in Figure 1 It is a structural schematic diagram of the energy storage cabinet, as shown in Figure 2 It is an explosion schematic diagram of the energy storage cabinet in Figure 1 For convenience of introduction, the length direction of the energy storage cabinet is taken as the x axis, the height direction of the energy storage cabinet is taken as the z axis, and the width direction of the energy storage cabinet is taken as the y axis, a three-dimensional coordinate system as shown in Figure 1 and Figure 2 is established.

[0052] Referring to Figure 2 , the energy storage cabinet comprises a cabinet 1, the cabinet 1 generally has a box shape in the shape of a rectangular parallelepiped, the cabinet 1 is divided into two regions, namely a battery compartment and a device compartment. The battery compartment is used for arranging batteries, and the device compartment, also referred to as an electrical compartment, is used for arranging various electrical devices, such as control cabinets of a power conversion system (PCS) and an energy management system (EMS), for realizing circuit control. Generally, the battery compartment and the device compartment of the energy storage cabinet are isolated to reduce the influence of electrical faults on the batteries, and also facilitate the maintenance and management of the batteries, therefore, as shown in Figure 2 , the inside of the cabinet 1 is isolated from the battery compartment and the device compartment by a partition plate.

[0053] With reference to Figure 2 As shown, the battery compartment has battery racks, and a plurality of battery mounting positions are formed by the battery racks. For example, with reference to Figure 2 As shown, the battery compartment includes a plurality of columns of battery mounting positions in the x-axis direction (six columns of battery mounting positions are exemplified in Figure 2 As shown, the battery compartment includes a plurality of layers of battery mounting positions in the z-axis direction (nine layers of battery mounting positions are exemplified in Figure 2 In this way, a plurality of batteries are inserted and fixed in the respective battery mounting positions.

[0054] In the field of energy storage cabinets, a plurality of batteries in each column of battery racks are generally referred to as a cluster of batteries, also referred to as a battery cluster, and a battery cluster includes a plurality of batteries arranged from bottom to top.

[0055] With reference to Figure 1 and Figure 2 As shown, the energy storage cabinet includes an explosion venting plate 2 fixed inside the cabinet 1. As described above, the container includes a battery compartment and an equipment compartment, and the battery compartment and the equipment compartment are in an isolated state, and the explosion venting plate 2 is used to balance the pressure inside and outside the battery compartment, so the explosion venting plate 2 is specifically fixed inside the battery compartment.

[0056] The explosion venting plate 2 has a position of weakness, and the strength of the explosion venting plate 2 at the position of weakness is lower than the strength at other positions. For example, the thickness of the explosion venting plate 2 at the position of weakness is thinner than the thickness at other positions, so that the strength of the explosion venting plate 2 at the position of weakness is lower. For another example, the explosion venting plate 2 has an indentation at the position of weakness, so that the strength of the explosion venting plate 2 at the position of weakness is lower.

[0057] In this way, when the pressure inside the battery compartment in a closed state is large, for example, when the pressure difference between inside and outside the battery compartment is greater than the strength that the explosion venting plate 2 at the position of weakness can withstand, the pressure difference between inside and outside the battery compartment will push the explosion venting plate 2 open, so that the gas inside the battery compartment can be released, achieving the purpose of pressure relief and explosion venting.

[0058] As can be seen, the explosion venting plate 2 is used to open in explosion venting (also referred to as pressure relief) to communicate the inside of the battery compartment with the outside of the battery compartment, and balance the pressure inside and outside the battery compartment, so with reference to Figure 2 As shown, the explosion venting plate 2 is specifically located above the battery mounting positions of the uppermost layer, that is, the explosion venting plate 2 is fixed inside the cabinet 1 of the battery compartment and located above the battery mounting positions of the uppermost layer. Then, after the battery mounting positions in the cabinet 1 are filled with batteries, the explosion venting plate 2 is located in the cabinet 1 and above the plurality of battery clusters.

[0059] Regarding the spacing between the explosion venting plate 2 and the topmost battery: If the explosion venting plate 2 is too close to the topmost battery, the upper wall of the topmost battery will be adjacent to or very close to the explosion venting plate 2, which is detrimental to explosion venting. This is because if the topmost battery is too close to or even adjacent to the explosion venting plate 2, less gas will accumulate between the topmost battery and the explosion venting plate 2, resulting in lower gas pressure. Therefore, it will be difficult to open the explosion venting plate 2 when explosion venting is needed. Therefore, the spacing between the explosion venting plate 2 and the topmost battery needs to be greater than a certain value, for example, greater than or equal to 100mm. This way, after the battery is installed in the topmost battery mounting position, there will be a relatively large gap between the upper wall of the topmost battery and the explosion venting plate 2, allowing more gas to accumulate and thus push the explosion venting plate 2 open during explosion venting.

[0060] In one example, although the large gap between the explosion vent plate 2 and the top battery layer is beneficial for opening the explosion vent plate 2 during explosion venting, once this gap becomes large enough, the ease of opening the explosion vent plate is no longer unrelated to the gap, but is related to the average air pressure inside the battery compartment. In this case, if the gap between the explosion vent plate 2 and the top battery layer is further increased, the number of battery mounting layers in the vertical direction will be reduced. Therefore, the gap between the explosion vent plate 2 and the top battery layer is less than a certain value, for example, the gap between the explosion vent plate 2 and the top battery layer is less than or equal to 150mm.

[0061] Therefore, the distance between the explosion venting plate 2 and the topmost battery can be greater than or equal to 100mm and less than or equal to 150mm. However, it should be noted that the specific range of the distance between the explosion venting plate 2 and the topmost battery can be obtained through simulation data and experimental data.

[0062] Regarding how the explosion vent plate 2 is fixed above the uppermost battery mounting position. In one example, the explosion vent plate 2 can be directly fixed above the uppermost battery mounting position. For example, as shown... Figure 3 As shown Figure 1 Another exploded view of the container shows that each battery mounting position has two horizontal beams parallel to the y-axis at the top of the battery compartment. The two ends of each beam are fixed to a longitudinal beam parallel to the x-axis of the container body 1. This forms a frame between two adjacent horizontal beams. Therefore, there can be multiple explosion-proof plates 2, each fixed to and covering one frame to keep the battery compartment sealed. Alternatively, there can be only one explosion-proof plate 2, with an area larger than the total area of ​​all frames, covering all frames and creating a weak point at each frame location. Or, there can be multiple explosion-proof plates 2, each covering two or more frames and creating a weak point at each individual frame location.

[0063] In another example, the explosion venting plate 2 can be fixed in the box 1 by the fixing plate 4. For example, referring to FIG. 2, the container further comprises a plurality of fixing plates 4, one of which is installed in the frame above each column of battery installation positions. As shown in FIG. 3, the fixing plate 4 has at least one installation opening 41, and a plurality of explosion venting plates 2 are fixed at the installation openings 41 and cover the installation openings 41. Figure 3 Figure 4 Figure 3 Figure 4

[0064] Of course, the number of fixing plates 4 can also be one, and one fixing plate 4 covers all the frames, and the fixing plate 4 has at least one installation opening 41 at the position corresponding to each frame. Alternatively, the number of fixing plates 4 is multiple, and each fixing plate 4 covers two or more frames, and the fixing plate 4 has at least one installation opening 41 at the position corresponding to each frame. The number of explosion venting plates 2 is multiple, and each explosion venting plate 2 is fixed at the installation opening 41 and covers the installation opening 41.

[0065] In the embodiment, whether the explosion venting plate 2 is directly fixed in the box 1 or fixed in the box 1 by the fixing plate 4 is not limited, and the explosion venting plate 2 is fixed in the box 1 by the fixing plate 4 is exemplified. In the embodiment, whether the number of fixing plates 4 is one or multiple is not limited, and multiple fixing plates 4 are exemplified, and one fixing plate 4 corresponds to one frame. In the embodiment, whether the number of explosion venting plates 2 is one or multiple is not limited, and multiple explosion venting plates 2 are exemplified, and one explosion venting plate 2 corresponds to one fixing plate 4.

[0066] Regarding the fixing mode of the explosion venting plate 2 and the fixing plate 4. Referring to FIG. 4 and FIG. 5, the area of the explosion venting plate 2 is slightly larger than the opening area of the installation opening 41 of the fixing plate 4, the explosion venting plate 2 covers the installation opening 41, and the explosion venting plate 2 and the fixing plate 4 are fixedly connected by screws. For example, the explosion venting plate 2 covers the installation opening 41 from the upper surface of the fixing plate 4, or the explosion venting plate 2 covers the installation opening 41 from the lower surface of the fixing plate 4, wherein the lower surface of the fixing plate 4 is the surface facing the battery installation position, and the upper surface is the surface facing away from the battery installation position. Then, the explosion venting plate 2 and the fixing plate 4 are fixedly connected by stainless steel screws. Wherein the weak force position of each explosion venting plate 2 falls in the covered installation opening 41. Figure 3 Figure 4

[0067] ​​​​​​As described above, the battery compartment includes a plurality of battery installation positions, and each battery installation position includes a plurality of battery installation positions. Therefore, the upper part of each battery installation position can be arranged with a venting plate 2, that is, the upper part of each battery cluster is arranged with a venting plate 2. For example, the number of venting plates 2 is multiple, and at least one venting plate 2 is arranged above each battery installation position (after the battery is loaded, it is each battery cluster). Referring to Figure 2 , two venting plates 2 are arranged above each battery installation position (after the battery is loaded, it is each battery cluster), and the venting plates 2 above the plurality of battery installation positions are arranged in a straight line. For another example, four venting plates 2 can be arranged above each battery installation position, and the venting plates 2 on the plurality of battery installation positions are distributed in two rows in the xy plane.

[0068] In order to protect the venting plate 2 and not expose the venting plate 2 to the outside, as Figure 2 and Figure 1 , the container includes a protective plate 3, which is fixed to the top of the box body 1 and covers the venting plate 2. Among them, the protective plate 3 serves as the top cover of the battery compartment. In this way, rainwater, snow and dust in the environment all fall on the protective plate 3 instead of the venting plate 2, thereby protecting the venting plate 2 and ensuring the reliability of the venting plate and the sealing of the battery compartment.

[0069] In one example, referring to Figure 1 and Figure 2 , the number of protective plates 3 can be multiple, for example, two protective plates 3 are arranged above each battery cluster, and each protective plate 3 is fixed to the two beams at the corresponding battery cluster, the front upper longitudinal beam and the rear upper longitudinal beam. In another example, the protective plate 3 can also be a whole plate, which is fixed to the top of the box body, for example, fixed to the front upper longitudinal beam, the rear upper longitudinal beam, and the beams at the left and right ends of the box body, covering all the venting plates 2. Among them, whether the protective plate 3 in the embodiment is a whole plate or multiple plates is not limited, and the example in the drawing is multiple plates.

[0070] Regarding the spacing between the venting plate 2 and the protective plate 3. If the venting plate 2 is next to the protective plate 3, the protective plate 3 provides support to the venting plate 2, enhancing the strength of the venting plate 2 at the weak force position, which will cause the pressure difference between the inside and outside of the battery compartment, and the venting plate 2 cannot be pushed open. Therefore, the venting plate 2 and the protective plate 3 need to have a spacing. The value range of the spacing is related to the height of the container. The value range of the spacing between the venting plate 2 and the protective plate 3 is also determined because the height of the container is a determined value and the value range of the venting plate 2 and the uppermost battery installation position.

[0071] Since the gas in the battery compartment is released between the explosion venting plate 2 and the protective plate 3 after the explosion venting plate 2 is pushed open, the gas needs to be further released to the environment to balance the air pressure inside and outside the battery compartment. Therefore, at least one side of the box body 1 has a first exhaust port (refer to Figure 3 the mesh hole on the mesh plate) at a position corresponding to the distance between the explosion venting plate 2 and the protective plate 3. In this way, after the explosion venting plate 2 is pushed open, the gas accumulated between the explosion venting plate 2 and the protective plate 3 is further discharged to the environment outside the container through the first exhaust port.

[0072] The at least one side of the box body 1 is specifically at least one side of the battery compartment.

[0073] In an example, the box body 1 is a cuboid box structure, and the circumferential direction of the box body 1 includes four side walls. Therefore, the front side and / or the rear side of the box body 1 can have the first exhaust port at a position corresponding to the distance between the explosion venting plate 2 and the protective plate 3. The front side and the rear side of the box body 1 can be two sides along the width direction of the box body 1, for example, two sides along the y-axis direction. The front side of the box body 1 can be the side where the panel of the battery is located after the battery is loaded. The rear side is opposite to the front side, and the door of the container is generally installed on the front side of the box body 1.

[0074] In another example, the left side and / or the right side of the box body 1 can also have the first exhaust port at a position corresponding to the distance between the explosion venting plate 2 and the protective plate 3. The left side and the right side can be two sides along the length direction of the box body 1, for example, two sides along the x-axis direction.

[0075] It should be noted that the equipment compartment is generally located on the left side or the right side of the battery compartment. If the first exhaust port faces the equipment compartment, the gas will be released into the equipment compartment, causing damage to the equipment in the equipment compartment. Therefore, the first exhaust port needs to avoid the equipment compartment.

[0076] Therefore, the first exhaust port can be located on the side of the battery compartment adjacent to the equipment compartment (refer to Figure 3 the top of the left side wall of the battery compartment) and / or on the side of the battery compartment facing away from the equipment compartment (refer to Figure 3 the top of the right side wall of the battery compartment).

[0077] The following describes the forming method of the first exhaust port, taking the front side and the rear side of the battery compartment as examples, which have the first exhaust port at a position corresponding to the distance between the explosion venting plate 2 and the protective plate 3.

[0078] As Figure 5 shown is a partial schematic view of the box body 1 at the top position, and Figure 5As shown, the top of the housing 1 includes four longitudinal beams parallel to the x-axis. Two of these beams are located on the front side of the housing 1, arranged vertically along the z-axis, and are designated as the front upper longitudinal beam 11 and the front lower longitudinal beam 12, respectively. The other two beams are located on the rear side of the housing 1, arranged vertically along the z-axis, and are designated as the rear upper longitudinal beam 13 and the rear lower longitudinal beam 14, respectively. (Reference) Figure 5 As shown, the fixing plate 4 for fixing the explosion relief plate 2 can be fixed to the front lower longitudinal beam 12 and the rear lower longitudinal beam 14, and the protective plate 3 is fixed to the front upper longitudinal beam 11 and the rear upper longitudinal beam 13. (Continue to refer to...) Figure 5 As shown, the distance (also called gap) between the front upper longitudinal beam 11 and the front lower longitudinal beam 12 forms the first exhaust port, and the distance (also called gap) between the rear upper longitudinal beam 13 and the rear lower longitudinal beam 14 also forms the first exhaust port. The first exhaust port discharges the gas that has accumulated between the explosion relief plate 2 and the protective plate 3. It can be seen that the first exhaust port can be formed by the distance between the two beams arranged vertically.

[0079] In one example, such as Figure 5 In the scheme shown where the distance between the upper and lower longitudinal beams forms the first vent, the opening area of ​​the first vent is relatively large, making it easy for flying insects and birds to enter between the explosion relief plate 2 and the protective plate 3, causing damage to the explosion relief plate 2. Correspondingly, a perforated plate can be installed on one side of the housing 1 at the position corresponding to the distance between the explosion relief plate 2 and the protective plate 3, with the mesh on the perforated plate serving as the first vent. For example, refer to... Figure 3 As shown, a perforated plate can be installed between the front upper longitudinal beam and the rear lower longitudinal beam, and between the rear upper longitudinal beam and the rear lower longitudinal beam. The perforations of the perforated plate serve as the first exhaust port.

[0080] In one example, the top battery mounting position is already sealed and fixed by the explosion vent plate 2 and / or the fixing plate 4, ensuring the airtightness of the battery compartment. Therefore, the protective plate 3 can also have some second vents extending through its thickness. In this way, during an explosion, after the explosion vent plate 2 is pushed open, gas can be released outward through the first vent on at least one side of the housing 1 and the second vents on the protective plate 3, quickly balancing the air pressure inside and outside the battery compartment.

[0081] For example, refer to Figure 2 As shown, the explosion venting plate 2 does not completely cover the battery compartment. In the area above each row of battery mounting positions, a portion (referred to as the first area) has the explosion venting plate 2 installed, while another portion (referred to as the second area) does not. Therefore, referring to... Figure 3As shown, the protective plate 3 covering the top of the battery compartment also includes two parts, respectively denoted as a first protective area 31 and a second protective area 32. The orthographic projection of the first protective area 31 on the plane of the explosion venting plate 2 falls on the explosion venting plate 2, that is, completely covers the explosion venting plate 2. The orthographic projection of the second protective area 32 on the plane of the explosion venting plate 2 does not fall on the explosion venting plate 2, and is staggered with the explosion venting plate 2. That is, there is no explosion venting plate 2 directly below the second protective area 32. Then, the part of the protective plate 3 in the second protective area 32 can have a second exhaust port penetrating the thickness direction. This second exhaust port in the second protective area 32 staggered with the explosion venting plate 2 can realize exhaust during explosion venting and prevent external dust and rain from falling on the explosion venting plate 2. The number of the second exhaust ports 321 can be multiple.

[0082] In an example, as shown in Figure 6 The protective plate 3 in the second protective area 32 is a meshed area. Then, the mesh in the second protective area 32 can serve as the second exhaust port. For example, the protective plate 3 in the first protective area is a solid plate, and in the second protective area is a meshed plate.

[0083] Of course, whether the explosion venting plate 2 covers the battery compartment or not, the second exhaust port can be provided on the protective plate 3. For example, the entire protective plate 3 is a meshed plate, which is laid on the top of the battery compartment. In this scheme, the mesh density of the meshed plate can be larger, which can also block snow and dust from falling on the explosion venting plate 2 and protect the explosion venting plate 2.

[0084] In an example, to avoid rain and snow from accumulating on the protective plate 3, the protective plate 3 can be fixed on the top of the box body 1 in an inclined manner. For example, the first side and the second side of the protective plate 3 have a height difference. For example, the first side and the second side of the protective plate 3 along the length direction have a height difference, or the first side and the second side of the protective plate 3 along the width direction have a height difference. In this way, the rain and snow falling on the protective plate 3 can flow down along the slope of the protective plate 3, thereby avoiding the rain and snow from accumulating on the protective plate 3 for a long time and causing damage to the protective plate 3.

[0085] Alternatively, in another example, the protective plate 3 can be fixed on the top of the box body 1 in a herringbone or ridge shape. For example, the middle position of the protective plate 3 is higher than the first side and the second side of the protective plate 3. For example, the middle position of the protective plate 3 is higher than the left side of the box body 1, and is also higher than the right side of the box body 1. In this way, the objects falling on the protective plate 3 can flow to the left side or the right side of the box body 1 along the slope of the protective plate 3.

[0086] The height difference between the position opposite first side and the second side of the protection plate 3, or the height difference between the middle position of the protection plate 3 and the position opposite first side and the second side, can be greater than or equal to 30mm and less than or equal to 100mm, for example, the height difference can be 30mm or 40mm. It should be pointed out that the specific value of the height difference can be determined by simulation data and experimental data.

[0087] In an example, in the scheme that the protection plate 3 includes the first protection area and the second protection area, the ridge type of the protection plate 3 can be designed to consider that the first protection area and the second protection area are relatively high at the junction. Figure 6 As shown in FIG. 6, the first protection area and the second protection area are distributed forward and backward along the width direction, and the first protection area and the second protection area are located on both sides of the center line parallel to the length direction. Then, the first protection area and the second protection area can be set to be higher at the junction and on both sides along the width direction, so that the protection plate 3 as a whole presents a ridge type.

[0088] The above is the feature introduction of the protection plate 3. It should be pointed out that in an example, the explosion venting plate 2 can be used as a first-stage explosion venting, and the protection plate 3 can also be used as a second-stage explosion venting.

[0089] For example, in the case that the air pressure in the battery compartment is relatively large, a large amount of gas in the battery compartment will first push open the explosion venting plate 2, and the gas is discharged from the battery compartment to the area between the explosion venting plate and the protection plate, as a first-stage explosion venting. A large amount of gas is discharged to the outside environment of the container through the first exhaust port and the second exhaust port, as a second-stage explosion venting. If the amount of gas in the battery compartment is relatively large, the protection plate 3 can also be pushed open in this case, so that a large amount of gas in the battery compartment is quickly discharged to the outside environment, to avoid container explosion.

[0090] In an example, in the scheme that the protection plate 3 can also be pushed open, some weak force positions can be provided on the protection plate 3. In this way, when the amount of gas in the battery compartment is relatively large, the protection plate 3 can also be more easily pushed open, to achieve rapid pressure relief and explosion venting.

[0091] In the embodiment of the present disclosure, the explosion venting plate is fixed inside the box body, and the upper part of the explosion venting plate is also covered with a protection plate, which can avoid the exposure of the explosion venting plate, and further avoid the erosion of the explosion venting plate by wind, snow and rain, to ensure the airtightness of the battery compartment. The container with the explosion venting plate inside the box body can be applied in an environment with snow all year round. Since the snow covers the protection plate but not the explosion venting plate, the snow will not affect the opening of the explosion venting plate, and the explosion venting plate can avoid the failure of explosion venting.

[0092] The terms used in the embodiments of the present disclosure are used only to explain embodiments of the present disclosure and not to limit the present disclosure. Unless otherwise defined, technical terms or scientific terms used in the embodiments of the present disclosure have the same meanings as are commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second", and similar terms do not necessarily denote any sequence or order, quantity, or importance, but are used to distinguish a different group. Also, the terms "one", "a", and similar terms mean "at least one" and "one or more", unless otherwise specified. The terms "include", "comprise", and similar terms mean that the elements or objects listed after the terms "include", "comprise", and similar terms encompass the elements or objects listed after the terms "include", "comprise", and similar terms and equivalents thereof, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right", and similar terms are used only to express relative positions of the objects, and may be changed when the absolute positions of the objects are changed. "Multiple" means two or more, unless otherwise specified.

[0093] The above-described embodiments are merely possible implementations of the present disclosure, and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, and the like made within the principles of the present disclosure should be included in the scope of the present disclosure.

Claims

1. An energy storage cabinet, characterized by, The energy storage cabinet comprises a cabinet body (1), a plurality of battery clusters, an explosion venting plate (2) and a protective plate (3); The plurality of battery clusters are arranged in the cabinet body (1), and the explosion venting plate (2) is arranged above the plurality of battery clusters in the cabinet body (1); The protective plate (3) is fixed on the top of the cabinet body (1) and covers the explosion venting plate (2), and the protective plate (3) and the explosion venting plate (2) have a spacing, and at least one side of the cabinet body (1) is provided with a first exhaust port at a position corresponding to the spacing between the protective plate (3) and the explosion venting plate (2).

2. The energy storage cabinet of claim 1, wherein, The protective plate (3) comprises a first protective area (31) and a second protective area (32), the first protective area (31) completely covers the explosion venting plate (2) in the orthogonal projection of the plane where the explosion venting plate (2) is located, and the second protective area (32) does not overlap with the explosion venting plate (2) in the orthogonal projection of the plane where the explosion venting plate (2) is located. The protective plate (3) has a second exhaust port penetrating the thickness direction of the protective plate (3) in the second protective area.

3. The energy storage cabinet of claim 2, wherein, The protective plate (3) is a mesh area in the second protective area, and the mesh serves as the second exhaust port.

4. The energy storage cabinet of claim 1, wherein, The protective plate (3) is fixed on the top of the cabinet body (1) in an inclined manner.

5. The energy storage cabinet of claim 4, wherein, The protective plate (3) has a height difference between the first side and the second side opposite to each other along the length direction or the width direction of the cabinet body (1).

6. The energy storage cabinet of claim 4, wherein, The protective plate (3) is higher at the middle position than at the first side and the second side opposite to each other along the length direction or the width direction of the cabinet body (1).

7. The energy storage cabinet of claim 1, wherein, The spacing between the explosion venting plate (2) and the uppermost battery in each battery cluster is greater than or equal to 100 mm and less than or equal to 150 mm.

8. The energy storage cabinet of claim 1, wherein, The number of the explosion venting plates (2) is multiple, and at least one explosion venting plate (2) is arranged above each battery cluster in the plurality of battery clusters.

9. The energy storage cabinet of claim 1, wherein, The cabinet body (1) comprises a front upper longitudinal beam (11), a front lower longitudinal beam (12), a rear upper longitudinal beam (13) and a rear lower longitudinal beam (14) extending along the length direction of the cabinet body (1), the front upper longitudinal beam (11) and the front lower longitudinal beam (12) are arranged on the front side of the cabinet body (1) along the height direction of the cabinet body (1), and the rear upper longitudinal beam (13) and the rear lower longitudinal beam (14) are arranged on the rear side of the cabinet body (1) along the height direction of the cabinet body (1); The explosion venting plate (2) is fixed on the front lower longitudinal beam (12) and the rear lower longitudinal beam (14), and the protective plate (3) is fixed on the front upper longitudinal beam (11) and the rear upper longitudinal beam (13); The first exhaust port is arranged at the gap between the front upper longitudinal beam (11) and the front lower longitudinal beam (12) and the gap between the rear upper longitudinal beam (13) and the rear lower longitudinal beam (14).

10. The energy storage cabinet of claim 9, wherein, The energy storage cabinet further comprises a plurality of fixed plates (4), one fixed plate (4) is arranged above each of the plurality of battery clusters, and each fixed plate (4) is fixed on the front lower longitudinal beam (12) and the rear lower longitudinal beam (14); Each fixed plate (4) has a mounting hole penetrating through the thickness direction of the fixed plate (4), and the explosion venting plate is mounted in the mounting hole of each fixed plate (4).

11. The energy storage cabinet of claim 9, wherein, The gap between the front upper longitudinal beam (11) and the front lower longitudinal beam (12) and the gap between the rear upper longitudinal beam (13) and the rear lower longitudinal beam (14) are covered with a mesh plate, and the meshes on the mesh plate serve as the first exhaust port.

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