Concrete energy storage box

Abstract

The utility model provides a concrete energy storage box which is provided with a basin-shaped box body and a cover plate, the cover plate covers the basin-shaped box body to form a closed energy storage cavity, and the basin-shaped box body and the cover plate are both made of concrete composite materials. The energy storage box forms an independent and closed space through the basin-shaped box body and the cover plate which are made of the concrete composite material, so that high temperature generated by thermal runaway of a battery in a single energy storage box can be effectively limited in the energy storage box, and the energy storage box made of the concrete composite material has relatively high compressive strength and relatively long fire-resistant time, so that the energy storage box can be used for storing the battery. The fire extinguishing agent liquid supply branch pipe can be flexibly arranged in the energy storage box, a long time can be provided for the fire extinguishing agent liquid supply branch pipe arranged in the energy storage box to fill a liquid fire extinguishing agent when a battery with a heavy thermal runaway degree is on fire, flames are effectively extinguished in time in the energy storage box, and the fire extinguishing effect is improved. And the influence of flame spreading on other energy storage boxes in the energy storage equipment is prevented.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and more specifically to a concrete energy storage box. Background Technology

[0002] Currently, energy storage equipment used in energy storage power stations mainly consists of energy storage containers. These containers have metal frames inside, where multiple battery modules are assembled to form a battery pack. The battery packs are arranged in an array on the metal frame. The battery pack casing is typically made of aluminum sheet metal. If one battery pack experiences thermal runaway and combustion, the entire battery pack array inside the container is susceptible to the effects of high temperatures and fire. Furthermore, because the outer shell of the energy storage container is usually a metal shell with an insulated lining, it is prone to deformation, twisting, and bending under high temperatures, potentially leading to the container burning through and collapsing. This can cause flames to spread outwards, making the fire difficult to control.

[0003] In view of this, it is necessary to improve the housing structure of battery modules in existing energy storage devices to solve the above problems.

[0004] It should be noted that the above description of the background technology is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background technology section of this application. Utility Model Content

[0005] The purpose of this utility model is to disclose a concrete energy storage box to solve the problem that the compressive strength and fire resistance of the battery module housing structure in the existing energy storage equipment are poor, resulting in a low fire protection rating of the energy storage equipment.

[0006] To achieve the above objectives, this utility model provides a concrete energy storage box, which is used as a housing structure for energy storage units. The energy storage box is equipped with a basin-shaped box body and a cover plate. The cover plate covers the basin-shaped box body to form a closed energy storage cavity. Both the basin-shaped box body and the cover plate are made of concrete composite material.

[0007] As a further improvement of this utility model, the energy storage box is provided with a fire extinguishing agent supply branch pipe and an overflow branch pipe that cooperates with the fire extinguishing agent supply branch pipe. The fire extinguishing agent supply branch pipe passes through the basin-shaped box body and is equipped with a fire extinguishing agent spray end exposed to the energy storage cavity. The overflow branch pipe passes through the basin-shaped box body and is equipped with an overflow inlet exposed to the energy storage cavity.

[0008] As a further improvement of this utility model, a gas extinguishing component is also provided inside the energy storage box. The gas extinguishing component includes a sealed container containing concentrated extinguishing gas or solid extinguishing gas. The sealed container seals its opening with a colloid. When the temperature inside the energy storage box exceeds a preset temperature, the colloid on the sealed container melts to open the opening.

[0009] As a further improvement of this utility model, the basin-shaped box is provided with a liquid-cooled water inlet connection end for connecting to the liquid-cooled water inlet branch pipe outside the energy storage box, and a liquid-cooled water return connection end for connecting to the liquid-cooled water return branch pipe outside the energy storage box.

[0010] As a further improvement of this utility model, the side wall of the basin-shaped box is configured with an electrical box for housing the battery main control module, and the side wall of the basin-shaped box is provided with a wiring area for electrically connecting the interior and exterior of the energy storage box.

[0011] As a further improvement of this utility model, at least one partition plate is provided inside the basin-shaped box, and the partition plate is configured to divide the energy storage cavity into at least two sub-energy storage cavities.

[0012] As a further improvement of this utility model, the energy storage box is provided with a fire extinguishing agent supply branch pipe and an overflow branch pipe connected to the fire extinguishing agent supply branch pipe. The fire extinguishing agent supply branch pipe is provided with a fire extinguishing agent injection end in each of the sub-energy storage chambers, and the overflow branch pipe is provided with an overflow inlet in each of the sub-energy storage chambers.

[0013] As a further improvement of this utility model, the basin-shaped box is provided with a liquid-cooled water inlet branch pipe and a liquid-cooled water return branch pipe. The liquid-cooled water inlet branch pipe passes through the basin-shaped box and is provided with a liquid-cooled water inlet end exposed in the sub-energy storage cavity. The liquid-cooled water return branch pipe passes through the basin-shaped box and is provided with a liquid-cooled water return outlet end exposed in the sub-energy storage cavity.

[0014] As a further improvement of this utility model, the partition plate is provided with a wiring area that connects the adjacent sub-energy storage cavities for electrical connection between the battery modules disposed in the sub-energy storage cavities. The wiring area is configured to seal the gap area except for the electrical connection components during application.

[0015] As a further improvement of this utility model, the energy storage box is also equipped with a movable component connected to the basin-shaped box body. A support component is embedded inside the basin-shaped box body. The movable component includes a pulley, a pulley shaft for supporting and driving the pulley, and a bearing sleeved on the pulley shaft. The bearing is welded and fixed to the support component.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention provides a concrete energy storage tank. Through a basin-shaped body and cover made of concrete composite material, the energy storage tanks form independent and enclosed spaces. This effectively confines the high temperatures generated by battery thermal runaway within a single energy storage tank and provides a longer time for fire extinguishing. The enclosed energy storage tank has a low oxygen content, allowing the flames to self-extinguish after ignition for battery fires with mild thermal runaway. Furthermore, the high compressive strength and long fire resistance of the concrete composite material allow for flexible configuration of extinguishing agent supply pipes within the tank. For battery fires with severe thermal runaway, this provides ample time for the supply pipes to inject liquid extinguishing agent, effectively extinguishing the flames within the tank and preventing the fire from spreading to other energy storage tanks in the energy storage system. Attached Figure Description

[0018] Figure 1 A schematic diagram of one embodiment of the energy storage box provided by this utility model;

[0019] Figure 2 In order to be in Figure 1 A schematic diagram showing the placement of battery modules in the provided energy storage box;

[0020] Figure 3 A schematic diagram of another embodiment of the energy storage box provided by this utility model.

[0021] Figure 4 In order to be in Figure 3 A schematic diagram showing the placement of battery modules in the provided energy storage box;

[0022] Figure 5 A schematic diagram of an energy storage compartment for some embodiments of the present invention;

[0023] Figure 6 Based on Figure 5 An exploded view of the provided energy storage compartment;

[0024] Figure 7 Based on Figure 5 Front views of the energy storage compartment in some embodiments provided;

[0025] Figure 8 Based on Figure 5 A schematic diagram of the provided energy storage compartment.

[0026] Figure 9 for Figure 8 Enlarged view of section A. Detailed Implementation

[0027] The present utility model will be described in detail with reference to the embodiments shown in the accompanying drawings. It should be noted, however, that these embodiments are not intended to limit the present utility model, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0028] It should be noted that in this application, "horizontal transverse" refers to the direction along the X-axis as indicated in Figures 1 to 9 , "horizontal longitudinal" refers to the direction along the Y-axis as indicated in Figures 1 to 9 , and "height direction" is the direction along the Z-axis as indicated in Figures 1 to 9 .

[0029] Embodiment 1

[0030] With reference to Figures 1 to 5 , the present utility model provides a concrete energy storage box 13 (hereinafter referred to as the energy storage box 13), which is configured with a basin-shaped box body 131 and a cover plate 132. Both the basin-shaped box body 131 and the cover plate 132 are made of concrete composite materials. The cover plate 132 is covered on the basin-shaped box body 131 to construct a closed energy storage cavity 130 for accommodating a battery cluster 21 composed of a plurality of battery modules 211.

[0031] Referring to Figure 1 , as an embodiment, the energy storage box 13 is a hexahedron sealed structure. The basin-shaped box body 131 is a pentahedron structure integrally cast with concrete composite materials, and the cover plate 132 is a plate-shaped structure integrally cast with concrete composite materials and capable of covering the opening of the entire basin-shaped box body 131. The cover plate 132 is covered on the basin-shaped box body 131 to construct an independent and closed energy storage cavity 130. The opening of the basin-shaped box body 131 is preferably arranged upward, and the cover plate 132 is arranged above the basin-shaped box body 131. In other alternative embodiments, the opening of the basin-shaped box body 131 can also be arranged on the side, and the cover plate 132 is arranged on the side of the basin-shaped box body 131.

[0032] An extinguishing agent supply branch pipe 135 for conveying liquid extinguishing agent is provided inside the energy storage tank 13. The extinguishing agent supply branch pipe 135 passes through the basin-shaped tank body 131 and is equipped with an extinguishing agent injection end 1352 exposed inside the energy storage cavity 130, so as to deliver liquid extinguishing agent from the outside of the energy storage tank 13 to the energy storage cavity 130. The extinguishing agent supply branch pipe 135 is equipped with a liquid extinguishing agent injection end 1351. The extinguishing agent injection end 1351 is preferably located on the front side wall 1311 of the basin-shaped tank body 131 located on the front side in the horizontal longitudinal direction, or extends forward a distance from the front side wall 1311 of the basin-shaped tank body 131 for easier connection. The extinguishing agent supply branch pipe 135 is connected to the extinguishing agent supply main pipe (not shown) provided in the energy storage compartment 10 through the liquid extinguishing agent injection end 1351. For example, the extinguishing agent supply main pipe (not shown) extends along the height direction and is connected to the extinguishing agent supply branch pipe 135 provided in each layer of energy storage box 13 respectively.

[0033] The energy storage box 13 is used as an independent fire protection grid. The end of the fire extinguishing agent supply branch pipe 135 is equipped with a fire sprinkler head (not shown). When the battery in the energy storage box 13 catches fire and the triggering condition of the fire sprinkler head is met, the fire sprinkler head in the energy storage box 13 will automatically start and extinguish the flame in the energy storage box 13 in time. Meanwhile, an overflow branch pipe 136 is installed inside the energy storage tank 13 to cooperate with the fire extinguishing agent supply branch pipe 135. The overflow branch pipe 136 passes through the basin-shaped box 131 and is equipped with an overflow inlet 1361 exposed to the energy storage cavity 130. When liquid fire extinguishing agent is injected into the energy storage cavity 130 through the fire extinguishing agent supply branch pipe 135, the liquid fire extinguishing agent above the height of the overflow inlet 1361 is discharged through the overflow branch pipe 136, so as to avoid the liquid fire extinguishing agent overflowing and affecting the battery cluster 21 in the other energy storage tanks 13 and other supporting components in the cabin 11. The liquid level in the energy storage cavity 130 is maintained at the height of the overflow inlet 1361. The basin-shaped box 131 contains and carries the liquid fire extinguishing agent, and the battery cluster 21 is immersed in the continuously flowing liquid fire extinguishing agent, so as to continuously cool and extinguish the fire of the entire battery cluster 21. The overflow inlet 1361 is positioned at a height close to the upper surface of the basin-shaped housing 131, preferably higher than the height of the battery cluster 21.

[0034] The overflow branch pipe 136 is equipped with an overflow outlet 1362, which is preferably located on the front side wall 1311 of the basin-shaped box 131, or extends forward a distance from the front side wall 1311 of the basin-shaped box 131 for easier connection. The overflow branch pipe 136 is connected to the overflow main pipe (not shown) provided in the energy storage compartment 10 through the overflow outlet 1362. For example, the overflow main pipe (not shown) extends along the height direction and is connected to the overflow branch pipes 136 provided in each layer of energy storage box 13 respectively.

[0035] Since the basin-shaped housing 131 and cover plate 132 of each energy storage box 13 are made of concrete composite material of a certain thickness, the extinguishing agent supply branch pipe 135 and overflow branch pipe 136 can be pre-embedded in the basin-shaped housing 131, with only the extinguishing agent injection end 1352 and overflow inlet 1361 exposed, thus saving space in the energy storage chamber 130. In other alternative embodiments, the extinguishing agent supply branch pipe 135 can also be arranged through the cover 132.

[0036] In addition to the existing fire extinguishing agent supply branch pipe 135 installed in the energy storage tank 13 to deliver liquid fire extinguishing agent for fire suppression, a gas fire extinguishing component (as shown in the diagram) can be added to enhance the fire protection level and fire suppression control performance of the energy storage chamber 10. The gas fire extinguishing component includes a sealed container filled with concentrated or solid fire extinguishing gas. The sealed container's opening is sealed with a colloid. When the temperature inside the energy storage tank 13 exceeds a preset temperature, the colloid on the sealed container melts to open the opening, releasing the fire extinguishing gas from the sealed container and injecting it into the energy storage chamber for fire suppression. When some lithium batteries in the battery cluster 21 catch fire due to thermal runaway, the fire extinguishing method can be set as follows: upon receiving a first fire signal, the gas fire extinguishing component in the burning energy storage tank 13 automatically extinguishes the fire; upon receiving a second fire signal, the liquid fire extinguishing system is activated to extinguish the fire in the burning energy storage tank 13 through the liquid fire extinguishing agent branch pipe. The extinguishing agent delivered through the extinguishing agent supply branch pipe includes water-based extinguishing agents composed of water and other chemical components. The concentrated extinguishing gas or solid extinguishing gas contained in the gas extinguishing assembly includes at least one of aerosol extinguishing agents, inert gas extinguishing agents, or dry powder extinguishing agents.

[0037] The basin-shaped housing 131 is also equipped with a pressure relief valve 137, which is used to connect the energy storage chamber 130 to the outside when the pressure in the energy storage chamber 130 exceeds a threshold. For example, when extinguishing a fire using a gas extinguishing assembly, if the pressure in the energy storage chamber 130 exceeds the threshold, the pressure relief valve 137 will automatically open to release the pressure.

[0038] Fires can be extinguished using liquid extinguishing agents, such as fire-fighting water. Water has excellent cooling properties, rapidly reducing the temperature of burning materials and thus inhibiting the spread of fire. However, water containing electrolytes has some conductivity. If the lithium battery is still connected to a power source or there are electrical devices nearby when it catches fire, using water to extinguish the fire may cause electric shock or short circuit explosion. Before using fire-fighting water, ensure that the lithium battery in the energy storage tank 13 is completely powered off and that there are no electrical devices nearby. Then, use a continuous and sufficient supply of water to extinguish the fire, ensuring a thorough reduction in battery temperature and preventing heat dissipation.

[0039] It is also possible to adopt a fire extinguishing method that combines gas fire extinguishing and liquid fire extinguishing to give full play to their respective advantages. Specifically, the fire extinguishing gas can quickly cover the fire source at the initial stage of the fire, isolate oxygen, and reduce the temperature; while liquid (including fire-fighting water) fire extinguishing is mainly used for cooling to prevent the fire from spreading and reigniting. After the open fire is extinguished by the fire extinguishing gas, the sprinkler heads of the liquid fire extinguishing agent branch pipe 135 are activated, and water or other fire extinguishing liquids are used to cool the energy storage box 13 and the battery cluster 21 inside to prevent the lithium battery from reigniting or experiencing thermal runaway due to high temperature.

[0040] For battery thermal management, two methods can be adopted: liquid-cooled plate cooling and immersion cooling. For example, the liquid-cooled plate cooling method is used for battery thermal management inside the energy storage box 13 for the heat dissipation of the battery cluster 21. Specifically, a liquid-cooled plate (not shown) is provided at the bottom of the energy storage cavity 130, and liquid-cooled water inlet branch pipes and liquid-cooled water return branch pipes communicating with the liquid-cooled plate are provided inside the energy storage cavity 130 to form a liquid-cooled loop. The liquid inlet connection end 1381 of the liquid-cooled water inlet branch pipe and the liquid return connection end 1382 of the liquid-cooled water return branch pipe are preferably respectively provided on the front side wall 1311 of the basin-shaped box body 131, or extend forward a certain distance from the front side wall 1311 of the basin-shaped box body 131 for more convenient connection.

[0041] See Figure 2 As shown, in application, according to the set energy storage capacity of each energy storage box 13, the battery cluster

[0040] 21 and the required accommodation space size are configured to determine the size of the energy storage box 13. [[ID=]]

[0042] In some embodiments, the length of the energy storage box 13 is set to 2.5 m - 5 m, the width is set to 2 m - 4 m, the height is set to 0.25 - 0.5 m, and the thickness is set to 3 - 5 cm. Among them, see Figure 1 , the length of the energy storage box 13 corresponds to the y direction, the width of the energy storage box 13 corresponds to the x direction, and the height of the energy storage box 13 corresponds to the z direction. Based on the above size range of the energy storage box 13, for example, each energy storage box 13 can accommodate a battery cluster <00><000

[0040] 21 with an energy storage capacity of several hundred kilowatt-hours. Since the volume of the energy storage box 13 is large and the concrete composite material has a large density, the energy storage box 13 after placing the battery cluster

[0040] 21 is heavy, generally several tons.

[0043] To facilitate the installation and maintenance of the energy storage box 13, a supporting component (not shown, e.g., a steel reinforcement frame) is embedded within the concrete composite material of the basin-shaped box 131. The energy storage box 13 is equipped with several movable parts 133 connected to the basin-shaped box 131. Each movable part 133 includes a pulley 1331, a pulley shaft 1332 for supporting and driving the pulley 1331, and a bearing (not shown) sleeved on the pulley shaft 1332. The bearing is welded and fixed to the supporting component within the concrete composite material of the basin-shaped box 131. The pulleys 1331 are preferably located on both sides of the basin-shaped box 131 near the bottom surface. Since the energy storage box 13 cannot be pushed manually, an auxiliary lifting and lowering device can be used to push it for installation or disassembly and maintenance. For example, a threaded connection hole 1333 is provided on the front side wall of the basin-shaped box 131, and an electric hoist is connected to the threaded connection hole 1333 for electric lifting and lowering of the energy storage box 13.

[0044] The front sidewall 1311 of the basin-shaped enclosure 131 has an externally mounted high-voltage box 22 for housing the battery main control module, which is used to control and protect the battery clusters 21 inside the energy storage box 13. The front sidewall 1311 of the basin-shaped enclosure 131 has wiring holes for electrically connecting the interior and exterior of the energy storage box 13.

[0045] To further enhance the grid-based management of fire zones, reduce losses, and mitigate fire safety risks, [the relevant authorities]... Figure 3 and Figure 4 As shown, in another embodiment, a partition plate 134 is provided inside the basin-shaped box 131. The partition plate 134 is configured to divide the energy storage cavity 130 into at least two sub-energy storage cavities 1301, thereby reducing the fire protection grid of the energy storage box 13. For example, N-1 partition plates 134 are added inside the basin-shaped box 131, making it into N sub-energy storage cavities 1301. Preferably, the energy storage cavity 130 is evenly divided to form N sub-energy storage cavities 1301. For example, the partition plate 134 is formed by protruding upward from the bottom surface of the basin-shaped box 131 and extends horizontally to the opposite side plates of the basin-shaped box 131. The partition plate 134 can be integrally formed into the body of the basin-shaped box 131, or it can be connected to the body of the basin-shaped box 131 by splicing. For example, the partition plate 134 is spliced ​​to the body of the basin-shaped box 131 by plugging, thereby allowing for flexible adjustment of the space size of the sub-energy storage cavities 1301.

[0046] The cover plate 132 can be an integrated cast-in-place structure that covers the opening of the entire basin-shaped box 131, or it can be composed of multiple sub-cover plates 1320, wherein each sub-cover plate 1320 is a plate-shaped structure integrally cast from concrete composite material, and the size of the sub-cover plate 1320 is adapted to the length and width of the sub-energy storage cavity 1301.

[0047] In one implementation, the battery modules 211 are evenly distributed in N sub-energy storage cavities 1301. That is, in each sub-energy storage cavity 1301, multiple battery modules 211 form a battery module unit 210, and N battery module units 210 form a battery cluster 21. This reduces the number of battery modules installed in each independent cavity, thereby reducing the impact area caused by thermal runaway combustion of batteries within a single battery module 211. A wiring groove 1341 is provided on the partition plate 134 to connect adjacent sub-energy storage cavities 1301, for routing connecting lines between adjacent battery module units 210. For example, the wiring groove 1341 is recessed downwards from the top surface of the partition plate 134. Battery module units 210 are installed in each sub-energy storage cavity 1301. The battery module units 210 in adjacent sub-energy storage cavities 1301 are connected in series through wiring channels 1341 via connecting wires (not shown) and the gaps in wiring channels 1341 are sealed so that the sub-energy storage cavities 1301 have independent closed areas.

[0048] Each sub-energy storage chamber 1301 is equipped with a fire extinguishing agent supply branch pipe 135, and a fire sprinkler head (not shown) is configured at the spray end 1352 of the fire extinguishing agent supply branch pipe 135. When a battery in a single sub-energy storage chamber 1301 catches fire and the triggering condition of the fire sprinkler head is met, the fire sprinkler head in that sub-energy storage chamber 1301 will automatically activate to extinguish the flames in the sub-energy storage chamber 1301 in a timely manner, so as to prevent the fire from spreading to other sub-energy storage chambers 1301, thereby maximizing fire prevention and control and reducing losses. At the same time, each sub-energy storage chamber 1301 is equipped with an overflow inlet 1361 of an overflow branch pipe 136, which can directly discharge the liquid fire extinguishing agent in the burning sub-energy storage chamber 1301 during fire fighting, preventing the liquid fire extinguishing agent from overflowing and affecting the battery module units 210 in other sub-energy storage chambers 1301.

[0049] For example, refer Figure 3 and Figure 4 As shown, in one embodiment, the energy storage chamber 130 is divided into four sub-energy storage chambers 1301, and one-quarter of the space size of the energy storage box 13 is used as the minimum fire protection grid.

[0050] A liquid cooling plate (not shown) is provided at the bottom of each sub-energy storage cavity 1301 for heat dissipation of the battery module unit 210 in each sub-energy storage cavity 1301. A liquid cooling water inlet output terminal (not shown) and a liquid cooling water return input terminal (not shown) are provided in each sub-energy storage cavity 1301. The liquid cooling water inlet input terminal in each sub-energy storage cavity 1301 is connected to the liquid inlet connection terminal 1381 of the liquid cooling water inlet branch pipe. The liquid cooling water return output terminal in each sub-energy storage cavity 1301 is connected to the liquid return connection terminal 1382 of the liquid cooling water return branch pipe to form a liquid cooling circuit.

[0051] Concrete composite materials have good thermal insulation properties, which can effectively limit the high temperature generated by battery thermal runaway in a single energy storage box 13 to the energy storage box 13 as much as possible, and prevent the high temperature from being transferred to adjacent energy storage boxes 13. Furthermore, since the oxygen content in the energy storage box 13 is low and the sealing is good, the fire of a battery with a minor degree of thermal runaway can be extinguished by itself after it starts burning.

[0052] The compressive strength of ordinary concrete is generally between 20-60 MPa, while that of ultra-high performance concrete is generally above 150 MPa, and some can reach above 200 MPa. Currently, the ultimate compressive strength of concrete can reach 600 MPa. In some embodiments, the energy storage box 13 can be formed of ordinary concrete or ultra-high performance concrete, and the interior of the concrete can be reinforced with steel bars or synthetic fibers to enhance the comprehensive performance of the concrete composite material.

[0053] Because the energy storage box made of concrete composite material has a certain thickness, high compressive strength and long fire resistance time, fire extinguishing agent supply branch pipes can be flexibly configured inside the energy storage box. For battery fires with severe thermal runaway, it can provide a longer time for the fire extinguishing agent supply branch pipes configured inside the energy storage box to inject liquid fire extinguishing agent, so that the flames can be extinguished in time and effectively inside the energy storage box 13, preventing the fire from spreading and affecting the other energy storage boxes 13 and the battery clusters 21 inside the energy storage device.

[0054] Example 2

[0055] Combination Figures 5 to 8 As shown, the present invention provides a precast concrete energy storage chamber 10 (hereinafter referred to as energy storage chamber 10), including a chamber body 11, a door 12 pivotally connected to the chamber body 11, and a plurality of energy storage boxes 13 inserted layer by layer in the chamber body 11 along the height direction. The structure of the energy storage box 13 is as described in Embodiment 1, and will not be repeated here.

[0056] The cabin 11 includes walls made of concrete composite material and forms an accommodating space 110 with an opening 1102. Specifically, in this embodiment, the cabin 11 includes a left side wall 111 and a right side wall 112 arranged opposite each other in the horizontal direction, a top wall 113 and a bottom wall 114 arranged opposite each other in the height direction, and a rear side wall 115 located in the horizontal longitudinal direction. The accommodating space 110 is formed by the left side wall 111, the top wall 113, the right side wall 112, the bottom wall 114 and the rear side wall 115.

[0057] In some embodiments, the opening 1102 of the accommodating space 110 is located on the front side in the horizontal longitudinal direction, and the hatch 12 is pivotally connected to the side edge of the opening 1102. The opening or closing state of the opening 1102 is controlled by opening and closing the hatch 12. In other alternative embodiments, the opening 1102 and the hatch 12 may also be located on the rear side in the horizontal longitudinal direction of the accommodating space 110.

[0058] Combination Figure 1 , Figure 2 , Figures 6 to 9 As shown, this embodiment provides a sliding connection for the installation and removal of the energy storage box 13 within the cabin 11. Specifically, the inner walls of the left side wall 111 and right side wall 112 of the cabin 11 are provided with track beams 116 extending horizontally. The track beams 116 are configured to divide the accommodating space 110 into several accommodating cavities 1101 along the height direction. The dimensions of the energy storage box 13 are adapted to the accommodating cavities 1101 so that the energy storage box 13 can be inserted into the accommodating cavities 1101 layer by layer along the height direction. The track beams 116 are arranged in two opposing rows along the height direction on the left side wall 111 and right side wall 112, and the two track beams 116 corresponding to each other in the two rows are on the same plane to support the energy storage box 13 on them.

[0059] In this embodiment, the energy storage box 13 is supported on the upper surface of the track beam 116 by pulleys 133. Under the condition of applying a certain pushing or pulling force to the energy storage box 13, the energy storage box 13 can slide along the track beam 116 to allow it to be inserted into or removed from the opening 1102. To increase the support strength of the track beam 116 for the energy storage box 13 during sliding and to reduce the frictional resistance during dragging, [further details are needed]. Figure 9 As shown, in this embodiment, an angled joint plate 1161 is embedded at the corner of the support surface of the track beam 116. The angled joint plate 1161 is a long strip of steel constructed into a vertical angle. The angled joint plate 1161 extends along the extension direction of the track beam 116, and the pulley 1331 of the energy storage box 13 is supported on the angled joint plate 1161 of the track beam 116. In application, a battery cluster 21 is installed inside the energy storage box 13. The battery cluster 21 is composed of several battery modules 211, which are formed by combining energy storage carriers (currently, lithium batteries are commonly used as energy storage carriers) in a series and parallel manner. The energy storage compartment 10 is equipped with a battery management system to manage and control the battery cluster 21 in each energy storage box 13.

[0060] During the charging and discharging process of lithium batteries, a large amount of heat is generated. If too much heat accumulates, it will cause the battery temperature to rise, affect the battery performance and even lead to thermal runaway, and it is extremely easy to generate flammable and explosive gases. In this embodiment, the cabin body 11, the cabin door 12 and the energy storage box 13 are all concrete composite structures made of concrete composite materials. After a certain fire protection design for the concrete composite structure, even in case of a fire, due to the structural characteristics of the solidified substances inside, the molten concrete still has strong pressure resistance, so the concrete composite structure has better fire resistance than the metal sheet structure, and thus higher safety. Therefore, the energy storage cabin 10 provided in this embodiment can effectively limit the high temperature generated by the battery thermal runaway inside the energy storage cabin 10, and when on fire, the flame will not spread outside the energy storage cabin 10 to cause flame spread. <OOO0156><OOO0157>In order to further improve the fireproof partition performance of the energy storage cabin 10, in this embodiment, refer <OOO0158>and <OOO0159>As shown, four walls of the cabin body 11 (i.e., the left side wall 111, the right side wall 112, the top wall 113, the bottom wall 114) extend a certain distance horizontally and longitudinally outward from the position where the cabin door 12 is located to form a front fireproof partition area 1103, and extend a certain distance upward from the periphery of the top wall 113 to form a top fireproof partition area 1104. In other embodiments, further, four walls of the cabin body ll (i.e., the left side wall 111, the right side wall 112, the top wall 113, the bottom wall 114) can extend a certain distance horizontally and longitudinally outward from the position where the rear wall 115 is located to form a rear fireproof partition area (not shown). <OOO0160><OOO0161>When the lithium battery itself catches fire, if not properly controlled, it will explode in a short time, directly affecting the life safety of on-site staff and the normal operation of other equipment. To reduce the occurrence frequency of accidents, according to the regulations of energy storage safety, it is required that all energy storage devices need to install explosion-proof ventilation devices (for example, explosion venting fans) to ensure that when the concentration of combustible gas is higher than the threshold value, the ventilation system can be started in time to discharge the combustible gas and prevent the occurrence of explosion accidents. <OOO0162><OOO0163>Refer <OOO0164>and <OOO0165>As shown, in this embodiment, a first explosion venting port 1131 is provided on the top of the cabin body 11 (for example, on the top wall 113), and a second explosion venting port 1201 is provided on the cabin door 12. Explosion venting valves (not shown) are provided on both the first explosion venting port 1131 and the second explosion venting port 1201. The explosion venting fan (not shown) can be installed above the first explosion venting port 1131. When the concentration of combustible gas in the cabin body 11 is higher than the threshold value, the explosion venting valve and the explosion venting fan are automatically opened, and the external air can enter through the second explosion venting port 1201 and be discharged through the first explosion venting port 1131 after passing through the accommodation space 110 to circulate and replace the air in the cabin body 11.

[0064] The cabin 11 can be integrally cast on-site using concrete composite materials or prefabricated in a factory. For heavier prefabricated cabins, to meet the maximum weight limit for the total mass of highway freight vehicles, the prefabricated cabin can be designed as two or more cabin units, prefabricated in the factory, and then seamlessly spliced ​​on-site. The cabin 11 can be constructed by splicing prefabricated concrete cabin units along the horizontal longitudinal direction or by splicing prefabricated concrete cabin units along the vertical direction.

[0065] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A concrete energy storage box for accommodating energy storage units, characterized in that, The energy storage box is equipped with a basin-shaped box body and a cover plate. The cover plate covers the basin-shaped box body to form a closed energy storage cavity. Both the basin-shaped box body and the cover plate are made of concrete composite material.

2. The concrete energy storage tank according to claim 1, characterized in that, The energy storage tank is equipped with a fire extinguishing agent supply branch pipe and an overflow branch pipe that cooperates with the fire extinguishing agent supply branch pipe. The fire extinguishing agent supply branch pipe passes through the basin-shaped tank and is equipped with a fire extinguishing agent spray end exposed to the energy storage cavity. The overflow branch pipe passes through the basin-shaped tank and is equipped with an overflow inlet exposed to the energy storage cavity.

3. The concrete energy storage tank according to claim 1, characterized in that, The energy storage box is also equipped with a gas extinguishing component, which includes a sealed container containing concentrated extinguishing gas or solid extinguishing gas. The sealed container is sealed with a colloid to open its opening. When the temperature inside the energy storage box exceeds a preset temperature, the colloid on the sealed container melts to open the opening.

4. The concrete energy storage tank according to claim 1, characterized in that, The basin-shaped housing is provided with a liquid-cooled water inlet connection end for connecting to the liquid-cooled water inlet branch pipe outside the energy storage tank, and a liquid-cooled water return connection end for connecting to the liquid-cooled water return branch pipe outside the energy storage tank.

5. The concrete energy storage tank according to claim 1, characterized in that, The side wall of the basin-shaped enclosure is equipped with an electrical box for housing the battery main control module, and the side wall of the basin-shaped enclosure has a wiring area for electrically connecting the inside and outside of the energy storage box.

6. The concrete energy storage tank according to claim 1, characterized in that, At least one partition plate is provided inside the basin-shaped box, and the partition plate is configured to divide the energy storage cavity into at least two sub-energy storage cavities.

7. The concrete energy storage tank according to claim 6, characterized in that, The energy storage tank is equipped with a fire extinguishing agent supply branch pipe and an overflow branch pipe connected to the fire extinguishing agent supply branch pipe. The fire extinguishing agent supply branch pipe is equipped with a fire extinguishing agent injection end in each of the sub-energy storage chambers, and the overflow branch pipe is equipped with an overflow inlet in each of the sub-energy storage chambers.

8. The concrete energy storage tank according to claim 6, characterized in that, The basin-shaped housing is provided with a liquid-cooled water inlet branch pipe and a liquid-cooled water return branch pipe. The liquid-cooled water inlet branch pipe passes through the basin-shaped housing and is equipped with a liquid-cooled water inlet end exposed in the sub-energy storage cavity. The liquid-cooled water return branch pipe passes through the basin-shaped housing and is equipped with a liquid-cooled water return outlet end exposed in the sub-energy storage cavity.

9. The concrete energy storage tank according to claim 6, characterized in that, The partition plate is provided with a wiring area that connects adjacent sub-energy storage cavities for electrical connection between battery modules disposed in the sub-energy storage cavities. The wiring area is configured to seal the gap area except for the electrical connection components during application.

10. The concrete energy storage tank according to claim 1, characterized in that, The energy storage box is also equipped with a movable component connected to the basin-shaped box body. A support component is embedded inside the basin-shaped box body. The movable component includes a pulley, a pulley shaft for supporting and driving the pulley, and a bearing sleeved on the pulley shaft. The bearing is welded and fixed to the support component.

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