Embedded energy storage system

Abstract

The utility model relates to the field of energy storage systems, in particular to a pre-embedded energy storage system which comprises a foundation pit and an energy storage box, an operation cavity with an upward opening is arranged in the foundation pit, the energy storage box is arranged in the operation cavity, the foundation pit can be embedded underground, the opening of the operation cavity extends to the ground surface, and a waterproof coating is arranged on the inner wall of the foundation pit. A top cover used for covering an opening of the operation cavity is arranged on the surface of the foundation pit, a fire-fighting pipe, a water collecting tank, a water suction pump and a drainage pipe are arranged in the operation cavity, the water collecting tank is arranged on the bottom face of the operation cavity, the fire-fighting pipe and the drainage pipe both extend to the outer side of the foundation pit, and the end, away from the foundation pit, of the fire-fighting pipe can communicate with a fire extinguishing system; the end, located in the operation cavity, of the drainage pipe is communicated with a water suction pump, a liquid suction pipe on the water suction pump extends to the bottom face of the water collection tank, the bottom face of the operation cavity is provided with a drainage slope, and the lowest position of the bottom face of the operation cavity is connected with the water collection tank, so that the occupied ground space is effectively reduced; and the fire cannot spread around.

Description

Technical Field

[0001] The utility model relates to the field of energy storage systems, in particular to a pre-buried energy storage system. Background Art

[0002] An energy storage system stores electrical energy or other forms of energy through various media and releases it when needed. The basic principle is to store energy in a device in a chemical, physical, or mechanical form. When energy is needed, the energy in the storage device is released through a reverse process and supplied to the load. Energy storage systems are widely used in power systems, transportation, industry, and households, providing important support for energy storage and balance.

[0003] An energy storage system typically includes an energy storage box, which houses a heat dissipation component, a controller, and several energy storage cabinets. The energy storage box is used to protect the heat dissipation component, the controller, and several energy storage cabinets, preventing rain, dust, and other factors from affecting the normal operation of the energy storage system.

[0004] Existing energy storage systems are usually installed on the ground. Due to their large size, they require a large amount of ground space. In addition, when a fire occurs in the batteries inside the energy storage cabinet, the energy storage system located on the ground can easily cause the fire to spread to the surrounding area, affecting the buildings and personnel around the energy storage system and expanding the losses. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technical solutions, the utility model provides a pre-buried energy storage system, which can effectively solve the technical problems of occupying a large ground space and easily affecting surrounding buildings and personnel after a fire.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A pre-buried energy storage system includes a foundation pit and an energy storage box. An operating cavity with an upward opening is provided in the foundation pit. The energy storage box is arranged in the operating cavity. The foundation pit can be buried underground. The opening of the operating cavity extends to the ground surface. The inner wall of the foundation pit is provided with a waterproof coating. The surface of the foundation pit is provided with a top cover for covering the opening of the operating cavity. A fire pipe, a sump, a water pump and a drain pipe are provided in the operating cavity. The sump is provided at the bottom of the operating cavity. The fire pipe and the drain pipe both extend to the outside of the foundation pit. The end of the fire pipe away from the foundation pit can be connected to the fire extinguishing system. The end of the drain pipe located in the operating cavity is connected to the water pump. The liquid extraction pipe on the water pump extends to the bottom of the sump. The bottom of the operating cavity is provided with a drainage slope, and the lowest position of the bottom of the operating cavity is connected to the sump.

[0008] Furthermore, a boss is provided on the top surface of the foundation pit, the opening of the operating cavity extends to the top of the boss, and one end of the drainage pipe away from the water pump extends from the side wall of the boss to the outside of the foundation pit.

[0009] Furthermore, a hinge seat is provided on the boss, and the hinge seat is located around the opening of the operating cavity. The top cover is rotatably connected to the hinge seat through a rotating shaft. The top cover can be flipped vertically relative to the foundation pit with the rotating shaft as the axis.

[0010] Furthermore, a drainage trough is provided on the top surface of the foundation pit, which surrounds the boss and extends toward the edge of the foundation pit. One end of the drainage trough extending out of the foundation pit can be connected to the municipal drainage system, and the end of the drainage pipe away from the water pump is aligned with the drainage trough.

[0011] Furthermore, the drainage trough is opened upward, and a grille drainage cover is provided on the surface of the foundation pit, and the grille drainage cover can cover the opening of the drainage trough.

[0012] Furthermore, the side walls of the top cover are provided with ventilation louvers for heat dissipation, and the top of the top cover is provided with drainage slopes inclined toward both sides.

[0013] Furthermore, a maintenance ladder is provided on the side wall of the operating cavity, and a maintenance manhole cover is provided on the top surface of the foundation pit, and the maintenance manhole cover is aligned with the maintenance ladder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the foundation pit is buried underground, the opening of the operating cavity extends to the surface, and the energy storage box can be hoisted into the operating cavity from the opening of the operating cavity by a crane, effectively reducing the occupied ground space. The energy storage box is located below the ground. When the battery catches fire, the fire cannot spread to the surrounding area. The fire extinguishing system can quickly inject fire water into the operating cavity through the fire pipe. At the same time, the control system issues a command to stop the water pump, so that the energy storage box is immersed in the liquid for rapid cooling and air isolation, thereby effectively suppressing the flame, being safer, and effectively reducing the impact and loss after the accident. After the fire is extinguished, the top cover can be opened to hoist the energy storage equipment out for maintenance. The water entering the working cavity is then discharged through the water pump and discharged outdoors after environmental protection treatment is carried out to meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 It is a top view of the utility model;

[0018] Figure 4 This is a schematic diagram of the utility model after the top cover is opened;

[0019] Numbers in the figure: 1- foundation pit, 2- energy storage box, 3- operating chamber, 4- top cover, 5- boss, 6- rotating shaft, 7- maintenance ladder, 8- maintenance manhole cover, 9- fire pipe, 10- sump, 11- water pump, 12- drain pipe, 13- drainage trough, 14- grille drain cover, 15- ventilation shutters. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The following combination Figure 1-Figure 4 A detailed description of a pre-buried energy storage system of the utility model is given below:

[0022] A pre-buried energy storage system includes a foundation pit 1 and an energy storage box 2. The foundation pit 1 is provided with an operating cavity 3 with an opening facing upward, and the energy storage box 2 is arranged in the operating cavity 3. The foundation pit 1 can be buried underground, and the opening of the operating cavity 3 extends to the surface of the ground. The inner wall of the foundation pit 1 is provided with a waterproof coating, and the surface of the foundation pit 1 is provided with a top cover 4 for covering the opening of the operating cavity 3. The surface of the foundation pit 1 is flush with the surrounding bottom surface. The top surface of the foundation pit 1 is provided with a boss 5, and the opening of the operating cavity 3 extends to the top of the boss 5 to prevent water accumulated on the ground from flowing into the operating cavity 3 from the opening of the operating cavity 3. A hinge seat is provided on the boss 5, and the hinge seat is located around the opening of the operating chamber 3. The top cover 4 is rotatably connected to the hinge seat through the rotating shaft 6. The top cover 4 takes the rotating shaft 6 as the axis and can be flipped vertically relative to the foundation pit 1. After the top cover 4 is opened, the energy storage box 2 can be hoisted into the operating chamber 3 from the opening of the operating chamber 3 by a crane. The side wall of the operating chamber 3 is provided with an inspection ladder 7, and the top surface of the foundation pit 1 is provided with an inspection manhole cover 8. The inspection manhole cover 8 is aligned with the inspection ladder 7. The staff can open the inspection manhole cover 8 and enter the working chamber through the inspection ladder 7 to perform operations.

[0023] A fire pipe 9, a sump 10, a water pump 11 and a drain pipe 12 are provided in the operating chamber 3. The sump 10 is provided at the bottom of the operating chamber 3. The fire pipe 9 and the drain pipe 12 both extend to the outside of the foundation pit 1. The end of the fire pipe 9 away from the foundation pit 1 can be connected to the fire extinguishing system. The end of the drain pipe 12 located in the operating chamber 3 is connected to the water pump 11. The liquid suction pipe on the water pump 11 extends to the bottom of the sump 10. The bottom surface of the operating chamber 3 is provided with a drainage slope, and the drainage slope is 1%-2%, that is, the height difference of the bottom surface of the operating chamber 3 within each meter distance should be between 1 cm and 2 cm. The lowest position of the bottom surface of the operating chamber 3 is connected to the sump 10 to facilitate the accumulated water in the working chamber to flow into the sump 10. A liquid level sensor is provided in the sump 10. The water pump 11 starts working only when the liquid submerges the liquid level sensor.

[0024] The top surface of the foundation pit 1 is provided with a drainage trough 13, which surrounds the periphery of the boss 5 and extends to the edge of the foundation pit 1. One end of the drainage trough 13 extending out of the foundation pit 1 can be connected to the municipal drainage system. The end of the drainage pipe 12 away from the water pump 11 extends from the side wall of the boss 5 to the outside of the foundation pit 1. The end of the drainage pipe 12 away from the water pump 11 is aligned with the drainage trough 13. The water discharged by the water pump 11 flows into the drainage trough 13 and then flows to the municipal drainage system through the drainage trough 13. The opening of the drainage trough 13 faces upward. The surface of the foundation pit 1 is provided with The grille drainage cover 14 can cover the opening of the drainage trough 13. The grille drainage cover 14 is flush with the top surface of the foundation pit 1 to prevent pedestrians from stepping into the drainage trough 13 and falling when passing by. The side walls of the top cover 4 are provided with ventilation louvers 15 for heat dissipation. Since the density of hot air is less than that of cold air, the heat emitted by the energy storage box 2 heats the surrounding air, and the hot air automatically rises and dissipates from the ventilation louvers 15 to the outside world. The top of the top cover 4 is provided with drainage slopes inclined to both sides to prevent rainwater from accumulating on the top cover 4 and causing the top cover 4 to be corroded and rusted.

[0025] In a pre-buried energy storage system of this embodiment, a rectangular pit is dug on the ground, and a foundation pit 1 poured with concrete is placed in the pit. Then, the soil around the foundation pit 1 is filled so that the foundation pit 1 is buried underground. The opening of the operating chamber 3 extends to the surface, effectively reducing the occupied ground space. The energy storage box 2 is located below the bottom surface. When a battery fire occurs, the fire cannot spread to the surrounding area. The fire extinguishing system can quickly inject fire water into the operating chamber 3 through the fire pipe 9. At the same time, the water pump 11 stops working, so that the energy storage box 2 is immersed in the liquid for rapid cooling and air isolation, thereby effectively suppressing the flame, making it safer and effectively reducing the impact and loss after the accident.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A pre-buried energy storage system, comprising a foundation pit and an energy storage box, wherein an upwardly opening operating cavity is provided in the foundation pit, and the energy storage box is disposed in the operating cavity, characterized in that: The foundation pit can be buried underground, and the opening of the operating cavity extends to the surface. The inner wall of the foundation pit is provided with a waterproof coating, and the surface of the foundation pit is provided with a top cover for covering the opening of the operating cavity. A fire pipe, a sump, a water pump and a drainage pipe are provided in the operating cavity. The sump is provided at the bottom of the operating cavity. The fire pipe and the drainage pipe both extend to the outside of the foundation pit. The end of the fire pipe away from the foundation pit can be connected to the fire extinguishing system, and the end of the drainage pipe located in the operating cavity is connected to the water pump. The liquid extraction pipe on the water pump extends to the bottom of the sump. The bottom of the operating cavity is provided with a drainage slope, and the lowest position of the bottom of the operating cavity is connected to the sump.

2. The embedded energy storage system according to claim 1, characterized in that: A boss is provided on the top surface of the foundation pit, the opening of the operating cavity extends to the top of the boss, and one end of the drainage pipe away from the water pump extends from the side wall of the boss to the outside of the foundation pit.

3. The embedded energy storage system according to claim 2, characterized in that: A hinge seat is provided on the boss, and the hinge seat is located around the opening of the operating cavity. The top cover is rotatably connected to the hinge seat through a rotating shaft. The top cover takes the rotating shaft as the axis and can be flipped vertically relative to the foundation pit.

4. The embedded energy storage system according to claim 2, characterized in that: A drainage trough is provided on the top surface of the foundation pit, which surrounds the boss and extends to the edge of the foundation pit. One end of the drainage trough extending out of the foundation pit can be connected to the municipal drainage system, and the end of the drainage pipe away from the water pump is aligned with the drainage trough.

5. The embedded energy storage system according to claim 4, characterized in that: The opening of the drainage trough faces upward, and a grid drainage cover is provided on the surface of the foundation pit, and the grid drainage cover can cover the opening of the drainage trough.

6. The embedded energy storage system according to any one of claims 1 to 5, characterized in that: The side walls of the top cover are provided with ventilation shutters for heat dissipation, and the top of the top cover is provided with drainage slopes inclined toward both sides.

7. The embedded energy storage system according to any one of claims 1 to 5, characterized in that: A maintenance ladder is provided on the side wall of the operating cavity, and a maintenance well cover is provided on the top surface of the foundation pit, and the maintenance well cover is aligned with the maintenance ladder.

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