Energy storage container with embedded vent panel

Abstract

The utility model discloses a kind of energy storage containers of embedded installation of venting board, by optimizing the setting structure of water machine warehouse, so that the position of the top surface of box is higher, and the position of the water machine warehouse is relatively lower, installation area is formed in lower, venting board is set, so that the installation of venting board is a kind of embedded installation mode, venting board cannot protrude from the top surface of energy storage container, effectively protect venting board. While the top surface of energy storage container is flat, it is convenient for transportation and stacking. In the application, the design structure makes the energy storage container located below can also install venting board on top when stacking, and even if thermal runaway occurs during transportation, the venting board cannot be opened due to packaging and top space problems.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage battery technology, specifically relating to an energy storage container with an embedded explosion relief plate. Background Technology

[0002] Electrochemical energy storage batteries are typically housed in energy storage cabinets. When a battery experiences thermal runaway, complex physicochemical reactions occur in the electrolyte, positive and negative electrode materials, and separator, causing the battery to release a large amount of flammable gas into the cabinet. If this flammable gas encounters an electrical spark or other ignition source, it can cause a deflagration, generating high pressure that subjects the energy storage cabinet to extremely high pressure for a short period. Since energy storage cabinets are generally not designed to withstand high pressure, they are highly susceptible to disintegration under the high pressure generated by the deflagration, posing a significant safety hazard to personnel and equipment in the vicinity.

[0003] Therefore, current large-scale electrochemical energy storage cabinets (energy storage containers) are all equipped with explosion relief devices, and these devices are set with specific explosion relief pressure values.

[0004] In the event of battery thermal runaway, the explosion relief device of the energy storage system can guide the pressure inside the cabinet in a specific direction and away from the surrounding personnel, avoiding personal injury caused by the disintegration of the energy storage cabinet body, the explosion shock wave, and heat radiation, and limiting the impact of the fire and explosion to a small area around the cabinet.

[0005] In conventional designs, in order to direct pressure to the area with the least external impact, the explosion relief device is usually placed on the top of the energy storage cabinet.

[0006] For large-scale electrochemical energy storage systems, the cabinets are typically based on standard shipping containers with internal structural adjustments. However, shipping containers have strict limitations on their dimensions due to standardized transportation requirements. Explosion venting devices, located on the top, often protrude from the container's surface due to their structural features. Damage to these devices due to collisions during container transport and stacking is common, causing economic losses or potential risks.

[0007] For example, the invention application with publication number CN118281452A discloses an energy storage container, which includes multiple explosion relief plates. The top plate has multiple explosion relief ports, and one of the explosion relief plates covers one of the explosion relief ports. The strength of the explosion relief plate is less than the strength of the top plate. Summary of the Invention

[0008] This utility model addresses the aforementioned shortcomings in the existing technology by providing an energy storage container with an embedded explosion relief plate.

[0009] An energy storage container with an embedded explosion vent includes a container body. The container body has several battery compartments for placing battery modules and a control equipment compartment for placing control equipment. The top surface of the container body has a water turbine compartment, which contains a water turbine for cooling the battery modules in the battery compartments. The area on the top surface of the container body where the water turbine compartment is not located forms an installation area lower than the top surface of the water turbine compartment. At least one of the installation areas has an explosion vent, and an explosion vent is installed on the explosion vent.

[0010] The strength of the explosion relief plate is less than that of the top and side walls of other parts of the energy storage container. As a result, when the pressure inside the container is abnormal and reaches the explosion relief pressure value, the explosion relief plate will burst first, and the pressure will be released from the explosion relief port, reducing damage to other components of the energy storage container.

[0011] Preferably, the enclosure has a mounting plate on the outer periphery of the top surface of the explosion vent; the explosion vent plate has a mounting portion protruding to the side, which overlaps the mounting plate on the outer periphery of the top surface of the explosion vent and is fixed with bolts. The mounting plate can be directly used as part of the top wall of the enclosure, or it can be separately installed on the outer side of the top wall of the enclosure. If a separate mounting plate is installed, the mounting plate needs to be fixed to the top wall of the enclosure.

[0012] More preferably, a mounting flange is provided above the mounting part, a first sealing gasket is provided between the mounting flange and the mounting part, a second sealing gasket is provided between the mounting part and the mounting plate, and the bolt passes through the mounting flange, the first sealing gasket, the mounting part, the second sealing gasket and the mounting plate in sequence.

[0013] The installation flange ensures a secure installation of the explosion vent plate. The placement of the first and second sealing gaskets provides a good seal after installation, which is beneficial for waterproofing.

[0014] More preferably, when the bolt is fixed, it is riveted to the mounting plate using a blind-hole rivet nut. The use of a blind-hole rivet nut ensures good sealing and waterproofing at the mounting hole when the bolt is fixed, preventing water from seeping into the box through the bolt mounting hole.

[0015] More preferably, a reinforcing frame for strengthening the structure is provided on the side of the explosion vent, below the mounting plate. The reinforcing frame strengthens the structure near the explosion vent, ensuring the safety of the explosion vent plate and preventing damage under non-pressure relief conditions.

[0016] Preferably, the water turbine compartments are arranged in pairs, with two compartments in each pair spaced apart, forming the installation area at the interval.

[0017] More preferably, in the two paired water turbine compartments, the air inlets of each compartment are located on opposite sides, and the air outlets are located on one side of the installation area. By orienting the air outlets toward the installation area, the exhausted hot air can blow away debris or dust in the area where the explosion relief plate is located.

[0018] More preferably, the air outlet is provided with a louvered air guide plate, and each air guide plate is obliquely upward from the water turbine compartment to the installation area.

[0019] This utility model relates to an energy storage container with an embedded explosion-proof panel. By optimizing the structure of the water turbine compartment, the water turbine compartment is positioned higher on the top surface of the container, while the area without the water turbine compartment is relatively lower. An installation area is formed at the lower level where the explosion-proof panel is installed. This results in an embedded installation method for the explosion-proof panel, ensuring it does not protrude from the top surface of the energy storage container and providing effective protection. Furthermore, the flat top surface of the energy storage container facilitates transportation and stacking.

[0020] In existing technologies, when multiple energy storage containers are stacked, only the topmost container can have its explosion vent plate directly mounted on its top surface. Containers below, due to stacking constraints, cannot have their explosion vent plates directly mounted on their top surfaces and are typically mounted on the sides or not mounted at all. However, the design in this application allows even the bottom containers to have explosion vent plates mounted on their top surfaces during stacking. Furthermore, even in the event of thermal runaway during transport, the explosion vent plates will not fail to open due to packaging or limited top space. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the energy storage container of this utility model.

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the energy storage container of this utility model from another perspective.

[0023] Figure 3 This is a three-dimensional structural diagram of a pair of water turbine compartments.

[0024] Figure 4 This is a side view of the structure of a pair of water turbine compartments.

[0025] Figure 5 for Figure 4 A cross-sectional view along the AA direction.

[0026] Figure 6 This is a three-dimensional structural diagram of the explosion relief plate.

[0027] Figure 7 This is a side view of the explosion relief plate.

[0028] Figure 8 for Figure 7 A cross-sectional view along the BB direction.

[0029] Figure 9 for Figure 8 Enlarged view of part C.

[0030] Reference numerals: 1. Housing; 2. Battery compartment door; 3. Upper control equipment compartment; 31. PCS air inlet door; 32. PCS rear door; 4. Lower control equipment compartment; 5. Water turbine compartment; 51. Water turbine; 52. Outlet channel; 53. Air guide plate; 54. Fan; 55. Coolant inlet pipe; 56. Coolant outlet pipe; 57. Backdraft baffle; 58. First air hood; 59. Second air hood; 6. Explosion vent; 61. Mounting plate; 62. Reinforcing frame; 7. Explosion vent plate; 71. Mounting part; 72. Mounting flange; 73. Bolt; 74. First sealing gasket; 75. Second sealing gasket; 76. Blind hole riveting nut. Detailed Implementation

[0031] like Figures 1-2 As shown, an energy storage container with an embedded explosion-proof panel includes a container body 1. The container body 1 contains several battery compartments for placing battery modules. The battery compartments include four located at the four corners of the container body 1, divided into two groups, each group consisting of two compartments arranged opposite each other. Each battery compartment has a battery compartment door 2 on the side of the container body 1.

[0032] The enclosure 1 contains a control equipment compartment located between two battery compartments. This control equipment compartment is divided into upper and lower levels: an upper control equipment compartment 3 and a lower control equipment compartment 4. The upper control equipment compartment 3 has a PCS air inlet door 31 and a PCS rear door 32 on opposite sides of the enclosure 1, respectively. Both doors have ventilation holes for heat dissipation and ventilation. The upper control equipment compartment 3 houses an energy storage converter (PCS). The lower control equipment compartment 4 also has doors on opposite sides of the enclosure 1. The lower control equipment compartment 4 houses other control equipment, such as a battery high-voltage box and a UPS power supply, and is also equipped with an air conditioner for cooling the equipment inside.

[0033] The top surface of the container 1 is equipped with a pair of water cooling chambers 5, each containing a water cooling system 51 for cooling the battery modules within the battery compartment. Each battery compartment has one water cooling chamber 5 above it, and two water cooling chambers 5 corresponding to the same battery compartment form a pair. The distribution of the water cooling chambers 5 at the four corners of the top of the energy storage container ensures that the air intake areas are dispersed and do not interfere with each other.

[0034] Two water turbine compartments 5 are arranged opposite each other, with the gap serving as an outlet channel 52. The air inlets of the water turbine compartments 5 are located on opposite sides, and the air outlets are located on one side of the outlet channel 52. The outlet channel 52 is essentially formed by a downward slope on the top of the energy storage container, with the top surface of the water turbine compartments 5 serving as the top surface of the energy storage container. The top surface of the energy storage converter compartment 3 is flush with the top surface of each water turbine compartment 5. Therefore, the outlet channel 52 opens on the top surface of the energy storage container. Simultaneously, the side of the outlet channel 52 closest to the energy storage converter compartment 3 is obstructed by the side wall of the energy storage converter compartment 3, while the opposite side opens on the side of the energy storage container.

[0035] like Figures 3-5 As shown, the air outlet of the water turbine compartment 5 is equipped with louvered air guide plates 53, each of which is obliquely upward from the water turbine compartment 5 to the outlet channel 52. The air guide plates 53 allow hot air to be guided obliquely upward above the energy storage container, facilitating the exhaust of hot air.

[0036] The water cooler 51 has a fan 54 on the side facing the air outlet, which drives hot air to be discharged into the outlet channel 52. The water cooler 51 also has an inlet coolant pipe 55 and an outlet coolant pipe 56 on the side facing the air inlet, which form a cooling circuit to cool the battery module. The cooling pipes inside the battery compartment can be configured using conventional methods in the prior art, and then connected to the inlet coolant pipe 55 and outlet coolant pipe 56 of the water cooler 51 to form a circuit. Each water cooler 51 in each compartment is used to cool the battery module in the corresponding battery compartment below.

[0037] There is a gap between the water purifier 51 and the top surface of the water purifier compartment 5 to facilitate the installation and maintenance of the water purifier 51. A backflow preventer 57 is installed inside the water purifier compartment 5 to block this gap. In the structure shown in the figure, the backflow preventer 57 is located on the side near the air inlet of the water purifier compartment 5. The backflow preventer 57 prevents short-circuiting of the airflow between the front and rear sides, meaning that cold air can directly reach the air outlet from above the water purifier, or hot air can flow back from above the water purifier 51 to the air inlet.

[0038] The water turbine 51 has a first hood 58 on the side facing the air inlet, and the water turbine compartment 5 has a second hood 59 on the side facing the air inlet. Both the first hood 58 and the second hood 59 have ventilation holes, which are arranged in an array. The second hood 59 of the water turbine compartment 5 is located on the water turbine compartment door.

[0039] With this back-to-back layout of liquid-cooled water turbines, the air inlet of the water turbine 51 is located on the outer side of the container, while the air outlet is located in the outlet channel 52 on the top surface. This directs hot air to the top of the energy storage container, allowing adjacent energy storage containers to be placed close together during parallel installation without affecting each other's heat dissipation, thus minimizing the footprint.

[0040] like Figures 6-9 As shown, the area on the top surface of the housing 1 where the water turbine compartment 5 is not located forms an installation area lower than the top surface of the water turbine compartment 5. At least one of the installation areas is equipped with an explosion vent 6, and an explosion vent plate 7 is installed on the explosion vent 6. In the structure shown in the figure, there are two installation areas between the two pairs of water turbine compartments 5, each installation area is equipped with an explosion vent 6, and each explosion vent 6 is equipped with an explosion vent plate 7.

[0041] The strength of the explosion relief plate 7 is less than that of the top and side walls of other parts of the energy storage container. As a result, when the pressure inside the container is abnormal and reaches the explosion relief pressure value, the explosion relief plate 7 will burst first, and the pressure will be released from the explosion relief port 6, reducing the damage to other components of the energy storage container.

[0042] The enclosure 1 has a mounting plate 61 on the outer periphery of the top surface of the explosion vent 6. The mounting plate 61 can be directly integrated with the top wall of the enclosure 1, or it can be separately installed on the outer side of the top wall of the enclosure 1. If the mounting plate 61 is installed separately, it needs to be fixed to the top wall of the enclosure 1. The explosion vent 7 has a mounting part 71 that protrudes to the side. The mounting part 71 overlaps the mounting plate 61 on the outer periphery of the top surface of the explosion vent 6 and is fixed by bolts 73.

[0043] A mounting flange 72 is provided above the mounting part 71. A first sealing gasket 74 is provided between the mounting flange 72 and the mounting part 71. A second sealing gasket 75 is provided between the mounting part 71 and the mounting plate 61. Bolts 73 pass through the mounting flange 72, the first sealing gasket 74, the mounting part 71, the second sealing gasket 75 and the mounting plate 61 in sequence.

[0044] The installation of flange 72 ensures a secure installation of the explosion relief plate 7. The placement of the first sealing gasket 74 and the second sealing gasket 75 provides good sealing performance after installation of the explosion relief plate 7, which is beneficial for waterproofing.

[0045] When bolt 73 is fixed, it is riveted to mounting plate 61 using blind hole rivet nut 76. The use of blind hole rivet nut 76 ensures good sealing and waterproofing at the mounting hole when bolt 73 is fixed, preventing water from seeping into the interior of box 1 through the mounting hole of bolt 73.

[0046] A reinforcing frame 62 for strengthening the structure is provided on the side of the explosion vent 6, below the mounting plate 61. The reinforcing frame 62 strengthens the structure near the explosion vent 6, ensuring the safety of the explosion vent plate 7 and preventing damage under non-pressure relief conditions.

[0047] This utility model of an energy storage container with an embedded explosion-proof plate optimizes the structure of the water turbine compartment 5. The water turbine compartment 5 is positioned higher on the top surface of the container body 1, while the area without the water turbine compartment 5 is relatively lower, forming an installation area where the explosion-proof plate 7 is installed. This results in an embedded installation of the explosion-proof plate 7, ensuring it does not protrude from the top surface of the energy storage container and providing effective protection. Simultaneously, the flat top surface of the energy storage container facilitates transportation and stacking. Furthermore, by directing the air outlet of the water turbine compartment 5 towards the installation area, the exhausted hot air can effectively blow away debris or dust from the area where the explosion-proof plate 7 is located.

Claims

1. An energy storage container with an embedded explosion-proof plate, comprising a container body, wherein the container body is provided with a plurality of battery compartments for placing battery modules and a control equipment compartment for placing control equipment, characterized in that, The top surface of the enclosure is provided with a water cooling chamber, which contains a water cooling system for the battery modules in the battery compartment; the area on the top surface of the enclosure where the water cooling chamber is not located forms an installation area lower than the top surface of the water cooling chamber, and at least one of the installation areas is provided with an explosion vent, which is equipped with an explosion vent plate.

2. The energy storage container with an embedded explosion relief plate as described in claim 1, characterized in that, The enclosure has a mounting plate on the outer periphery of the top surface of the explosion vent; The explosion relief plate has a mounting portion that protrudes to the side, which overlaps the mounting plate on the outer periphery of the top surface of the explosion relief port and is fixed with bolts.

3. The energy storage container with the explosion relief plate embedded as described in claim 2, characterized in that, A mounting flange is provided above the mounting part, a first sealing gasket is provided between the mounting flange and the mounting part, and a second sealing gasket is provided between the mounting part and the mounting plate. The bolt passes through the mounting flange, the first sealing gasket, the mounting part, the second sealing gasket and the mounting plate in sequence.

4. The energy storage container with the explosion relief plate embedded as described in claim 3, characterized in that, When the bolt is fixed, it is installed by riveting the nut to the mounting plate through a blind hole.

5. The energy storage container with the explosion relief plate embedded as described in claim 2, characterized in that, The side of the explosion vent, located below the mounting plate, is provided with a reinforcing frame for strengthening the structure.

6. The energy storage container with an embedded explosion relief plate as described in claim 1, characterized in that, The water turbine compartments are arranged in pairs, with the two compartments in each pair spaced apart, forming the installation area at the interval.

7. The energy storage container with an embedded explosion relief plate as described in claim 6, characterized in that, In the two water turbine compartments that are set up in pairs, the air inlets of each water turbine compartment are located on opposite sides of each other, and the air outlets are located on one side of the installation area.

8. The energy storage container with an embedded explosion relief plate as described in claim 7, characterized in that, The air outlet is equipped with louvered air guide plates, and each air guide plate is set obliquely upward from the water turbine compartment to the installation area.

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