Combined energy storage cabinet and energy storage system

Abstract

The invention belongs to the technical field of energy storage equipment, particularly relates to a combined type energy storage cabinet and an energy storage system, and aims to solve the problems that in an existing technical scheme, only a ventilation mode is adopted for heat dissipation, a battery is difficult to stably cool, and a related fire extinguishing device is not arranged in the energy storage cabinet, so that fire is difficult to extinguish in time when the battery is on fire. According to the scheme, the energy storage cabinet comprises an energy storage cabinet body, and two door plates are symmetrically hinged to one side of an opening of the energy storage cabinet body; the plurality of partition plates are arranged in the energy storage cabinet body at equal intervals; according to the technical scheme, a plurality of batteries can be cooled in a dispersed heat exchange mode, so that the batteries can operate stably, open fire can be extinguished in time when the batteries are overheated and are on fire, and therefore, in the actual use process of the technical scheme, the battery cooling device can be used for cooling the batteries, and the service life of the batteries is prolonged. The method has good stability and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage equipment, and in particular to a combined energy storage cabinet and an energy storage system. Background Art

[0002] The energy storage cabinet mainly includes: battery cluster, battery management system, converter system and auxiliary system. The energy storage system can be connected to the power grid as an independent system, which can play the role of peak clipping, valley compensation and reactive power compensation. The energy storage system can also be combined with renewable energy power generation to form a wind and solar storage system to smooth the power generation side of renewable energy. The energy storage system can also be built at the load center, and renewable energy power generation systems such as wind power generation and photovoltaic power generation can form a microgrid system to improve energy utilization efficiency. For example, the announcement number: CN222749625U discloses a combined energy storage cabinet; The above technical solution only uses ventilation for heat dissipation. However, using air cooling for heat dissipation needs to take weather factors into consideration. If the indoor temperature is too high, it is difficult to cool the battery even if good ventilation is maintained. Furthermore, there is no relevant fire extinguishing device inside the energy storage cabinet. When a battery fire occurs, it is difficult to extinguish it in time. Therefore, we propose a combined energy storage cabinet and energy storage system to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to address the shortcomings of existing technical solutions that only use ventilation for heat dissipation, which makes it difficult to cool the batteries stably, and there is no relevant fire extinguishing device inside the energy storage cabinet, making it difficult to extinguish the fire in time when the batteries catch fire. A combined energy storage cabinet and energy storage system are proposed.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A combined energy storage cabinet, comprising: An energy storage cabinet, wherein one side of the opening of the energy storage cabinet is symmetrically hinged with two door panels; A plurality of partitions are installed in the energy storage cabinet at equal intervals; a supporting mechanism, mounted on the top of the partition, for supporting the battery; Multiple clamping mechanisms are symmetrically arranged on the inner walls of both sides of the energy storage cabinet, and are used to clamp and limit the battery; A spray mechanism is installed on the inner wall of one side of the energy storage cabinet, is connected to the bottoms of the plurality of partitions respectively, and has one side extending to the outside of the energy storage cabinet; The battery is placed on the supporting mechanism, and the clamping mechanism clamps and limits the battery. When the battery catches fire, the spraying mechanism can disperse and spray the fire extinguishing agent to extinguish the fire. In one possible design, the support mechanism includes: Two slide rails are symmetrically fixedly mounted on the top of the partition, with a same baffle fixedly mounted on one end; a slide bar, slidably connected to the slide rail; A support frame connected to the sides of the two sliding bars close to each other; A plurality of supporting protrusions are symmetrically arranged on the top of the supporting frame; The battery is placed on the plurality of support protrusions, and the sliding bar and the slide rail are slidably matched to realize lateral movement of the battery, which is convenient for installation or maintenance. In a possible design, a pull plate is connected to one side of the two slide bars that are close to each other. The pull plate is located on one side of the support frame. Pulling the pull plate can drive the two slide bars to move laterally, thereby moving the position of the battery. In one possible design, the clamping mechanism includes: A support shaft is fixedly mounted on an inner wall of one side of the energy storage cabinet; A first rotating arm and a second rotating arm are respectively rotatably sleeved on the support shaft; a clamping plate connected to one end of the first rotating arm and one end of the second rotating arm, for clamping and positioning the battery; After pushing the battery into the energy storage cabinet, flipping the clamping plate to a horizontal state can clamp and limit the battery. In a possible design, two temperature sensors are symmetrically embedded on the clamping plate, and the temperature sensors are in contact with the battery to monitor the temperature of the battery; After the clamping plate clamps and positions the battery, the temperature sensor is stably attached to the battery, and the monitored temperature is transmitted to the backend data center in real time so that the battery overheating problem can be handled in a timely manner. In one possible design, a positioning plate is sleeved on the support shaft, and the positioning plate is fixed to an inner wall of one side of the energy storage cabinet, and is provided with two sockets at an angle of 60°; An insertion rod is slidably connected to the first rotating arm and is movably engaged with the two insertion holes; A fixing ring, fixedly sleeved on the insertion rod; A compression spring is sleeved on the insertion rod, with two ends thereof fixedly connected to one side of the fixing ring and the first rotating arm respectively; When the clamping plate moves to the clamping or releasing position, the insertion rod is aligned with the corresponding insertion hole, the insertion rod is released, and the compression spring pushes the insertion rod into the insertion hole, braking and limiting the first rotating arm to keep the clamping plate stable. In one possible design, the spray mechanism includes: A spray box welded to the bottom of the partition; A delivery pipe is welded through one side of the spray box and has a solenoid valve installed inside. The solenoid valve is electrically connected to the corresponding four temperature sensors. A shunt pipe, fixedly connected to one end of the plurality of delivery pipes; A connector, connected to the bottom end of the diversion pipe, for connecting to an external fire protection pipe; When the battery catches fire, the corresponding solenoid valve opens, and the fire extinguishing agent enters the spray box through the fire-fighting pipeline, the diversion pipe, and the delivery pipe, and is dispersed and sprayed out to extinguish the fire. An energy storage system includes the combined energy storage cabinet as described above, and further includes: The water inlet pipe and the water outlet pipe both pass through the plurality of partitions and are fixedly connected thereto; The heat exchange coil is arranged on the top of the partition, with both ends passing through the slide rail on one side and fixedly connected to the water inlet pipe and the water outlet pipe; The bottom ends of the water inlet pipe and the water outlet pipe pass through the inner wall of the bottom of one side of the energy storage cabinet and extend to the outside to connect to the external circulating chiller; The low-temperature water output by the circulating chiller enters the heat exchange coil through the water inlet pipe, exchanges heat with the battery, and then flows back to the circulating chiller through the water outlet pipe to achieve cooling and heat dissipation of the battery. In one possible design, an inverter is installed in the energy storage cabinet, and the inverter is electrically connected to the multiple batteries respectively. The direct current stored in the batteries is converted into alternating current by the inverter to power the electrical equipment.

[0005] In the present application, when in use, the battery can be placed on the corresponding multiple supporting protrusions. The battery is supported by the multiple supporting protrusions and can remain in a suspended state, which can facilitate heat dissipation. Then, the pull plate is pushed to push the battery into the energy storage cabinet, and then the corresponding two clamping plates can be flipped so that the two clamping plates rotate to a horizontal state to clamp the battery. At this time, the insertion rod can correspond to the corresponding socket position, and then the insertion rod is released. At this time, the compression spring in a stressed state can drive the insertion rod to move by pushing the fixed ring, so that the insertion rod is inserted into the corresponding socket, and the first rotating arm is braked and limited, so that the clamping plate can remain stable and stably clamp and position the battery. After the clamping plate clamps and positions the battery, the temperature sensor can be stably fitted with the battery, and the temperature sensor can be used to monitor the temperature of the battery. The temperature sensor is connected to the background data center and can transmit the monitored temperature in real time. When there is a heat problem, the battery can be processed in time, and then the bottom end of the water inlet pipe and the bottom end of the water outlet pipe are connected to an external circulating chiller. At this time, the low-temperature water output by the chiller can be transported to the water inlet pipe, and then can be dispersed and transported to multiple heat exchange coils. At this time, under the action of the heat exchange principle, multiple batteries can be cooled separately. Compared with the air cooling method, the heat exchange method is used to cool the battery and dissipate heat, which has good stability. The cold water flowing into the heat exchange coil can be discharged through the outlet pipe and return to the chiller, so that the circulating water can be used to cool the battery. When a battery overheats and catches fire, the corresponding solenoid valve will be in the open state, and the fire extinguishing agent transported through the fire-fighting pipe can be transported to the diversion pipe. Then, the fire extinguishing agent can be transported to the spray box through the connected delivery pipe, so that the fire extinguishing agent can be dispersed and sprayed out by the spray box, so that the battery can be extinguished in time.

[0006] In the present invention, the combined energy storage cabinet can, through the support mechanism, after placing the battery on the multiple support protrusions, use the sliding cooperation between the slide bar and the slide rail to achieve the lateral movement of the battery, so that the battery can be moved in or out of the energy storage cabinet during installation or maintenance; In the present invention, the combined energy storage cabinet can, through the clamping mechanism, after pushing the battery into the energy storage cabinet, flip the clamping plate horizontally to clamp and limit the battery, thereby maintaining a stable position of the battery in the energy storage cabinet. In the present invention, the combined energy storage cabinet can, through the spray mechanism, open the corresponding solenoid valve when a battery fire occurs. The fire extinguishing agent transported through the fire-fighting pipeline can be transported to the shunt pipe, and then transported to the spray box through the connected delivery pipe. In this way, the fire extinguishing agent can be dispersed and sprayed out by the spray box, so that the battery fire can be extinguished in time. The present invention adopts a decentralized heat exchange method to cool down multiple batteries, thereby enabling the batteries to operate stably and extinguishing the fire in time when the batteries overheat and catch fire. Therefore, the present technical solution has good stability and reliability in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A three-dimensional schematic diagram of the structure of a combined energy storage cabinet and energy storage system proposed in the present invention from a first perspective; Figure 2 A three-dimensional schematic diagram of the second perspective structure of a combined energy storage cabinet and energy storage system proposed by the present invention; Figure 3 This is a schematic diagram of the main perspective structure of a combined energy storage cabinet and energy storage system proposed by the present invention; Figure 4 A three-dimensional schematic diagram of the connection structure of multiple partitions, multiple slide rails, multiple heat exchange coils, water inlet pipes and water outlet pipes of a combined energy storage cabinet and energy storage system proposed by the present invention; Figure 5 A three-dimensional schematic diagram of the connection structure of the support shaft, clamping plate, first rotating arm, second rotating arm, insertion rod and positioning plate of a combined energy storage cabinet proposed in the present invention; Figure 6 This is a three-dimensional schematic diagram of the connection structure of two slide rails, two slide bars and a support frame of a combined energy storage cabinet proposed by the present invention; Figure 7 This is a three-dimensional schematic diagram of the connection structure of multiple spray boxes, multiple delivery pipes, diversion pipes and joints of a combined energy storage cabinet proposed by the present invention; Figure 8 This is a battery discharge circuit diagram of a combined energy storage cabinet and energy storage system proposed by the present invention.

[0008] In the figure: 1. Energy storage cabinet; 2. Partition; 3. Slide rail; 31. Baffle; 4. Slide bar; 5. Support frame; 6. Support bump; 7. Pull plate; 8. Battery; 9. Support shaft; 10. Clamp; 101. First rotating arm; 102. Second rotating arm; 11. Temperature sensor; 12. Insert rod; 121. Fixing ring; 13. Positioning plate; 14. Compression spring; 15. Heat exchange coil; 16. Water inlet pipe; 17. Water outlet pipe; 18. Spray box; 19. Delivery pipe; 20. Diverter pipe; 21. Connector; 22. Inverter; 23. Door panel. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0010] Example 1: Reference Figure 1-7 An energy storage cabinet includes an energy storage cabinet body 1. The energy storage cabinet body 1 is in the shape of a rectangular parallelepiped, and two door panels 23 are symmetrically hinged on one side of its opening through hinges. The door panels 23 can be rotated around the hinges to realize the opening and closing of the energy storage cabinet body 1.

[0011] Inside the energy storage cabinet 1, multiple partitions 2 are welded at equal intervals. These partitions 2 are rectangular metal plates and are horizontally positioned within the cabinet 1. A support mechanism is mounted on top of the partitions 2. This support mechanism comprises two smooth, rectangular metal rails 3 bolted symmetrically to the top of the partitions 2. A common baffle 31 is bolted to one end of each rail. This baffle 31 is a rectangular metal plate and positioned perpendicular to the rails 3 to prevent the sliders 4 from sliding off the rails 3. Slidingly connected to the rails 3 are sliders 4, which are long, metal blocks that fit snugly within the rails 3 and can slide freely within them. A common support frame 5, consisting of a rectangular metal frame structure, is welded to the adjacent sides of the two sliders 4. A plurality of support bumps 6 are symmetrically bonded to the top of the support frame 5. These support bumps 6 are made of rubber and have a certain degree of elasticity. The batteries 8 are placed on these support bumps 6, which provide both cushioning and support. At the same time, the same pull plate 7 is welded to the side where the two slides 4 are close to each other. The pull plate 7 is a rectangular metal plate located on one side of the support frame 5. By pulling the pull plate 7, the two slides 4 can be driven to move laterally, thereby driving the support frame 5 and the battery 8 placed thereon to move laterally, making it easier to install or repair the battery 8.

[0012] Multiple clamping mechanisms are symmetrically mounted on the inner walls of the energy storage cabinet 1. These clamping mechanisms include a cylindrical metal support shaft 9 fixedly mounted on one inner wall of the cabinet 1. A first rotating arm 101 and a second rotating arm 102 are rotatably mounted on the support shaft 9. Both the first and second rotating arms 101, 102 are metal rod-shaped structures that can rotate about the support shaft 9. Bonded to one end of the first and second rotating arms 101, 102 is a common clamping plate 10. This clamping plate 10 is a rectangular metal plate covered with a rubber pad and is used to clamp and position the battery 8. After the battery 8 is inserted into the energy storage cabinet 1, the clamping plate 10 can be tilted horizontally to secure the battery 8, maintaining its position within the cabinet 1. Two cylindrical temperature sensors 11 are symmetrically bonded and embedded in the clamping plate 10. These temperature sensors 11 are cylindrical electronic components that contact the battery 8 and monitor its temperature. After the battery 8 is clamped and positioned using the clamping plate 10, the temperature sensor 11 can achieve a stable fit with the battery 8, thereby monitoring the temperature of the battery 8 in real time. The temperature sensor 11 is connected to the backend data center and can transmit the monitored temperature in real time so that timely treatment can be taken if the battery 8 overheats. A positioning plate 13 is mounted on the support shaft 9. The positioning plate 13 is a rectangular metal plate welded to the inner wall of one side of the energy storage cabinet 1. The positioning plate 13 has two sockets, and the two sockets are arranged at a 60° angle. The first rotating arm 101 is slidably connected to the insertion rod 12. The insertion rod 12 is a cylindrical metal rod that is movably fixed to the two sockets. The insertion rod 12 is fixedly mounted with a fixing ring 121, which is a ring-shaped metal part. The insertion rod 12 is mounted with a compression spring 14. The two ends of the compression spring 14 are fixedly connected to one side of the fixing ring 121 and the first rotating arm 101 by bolts. When the splint 10 is moved to the position for clamping the battery 8 or flipped upward to the position for releasing the battery 8, the insertion rod 12 can be made to correspond to the two socket positions respectively, and then the insertion rod 12 is released. At this time, the compression spring 14 in a stressed state can drive the insertion rod 12 to move by pushing the fixing ring 121, so that the insertion rod 12 is inserted into the corresponding socket, and the first rotating arm 101 is braked and limited, so that the splint 10 remains stable.

[0013] The present application can be used in the field of energy storage device technology, and can also be used in other fields applicable to the present application.

[0014] Example 2: Reference Figure 7, based on the improvement of the first embodiment: a combined energy storage cabinet, which is applied to the field of energy storage equipment technology, is installed on the inner wall of one side of the energy storage cabinet body 1. The spray mechanism includes a spray box 18 welded to the bottom of the partition 2. The spray box 18 is a rectangular metal box with a hollow interior. A delivery pipe 19 is welded through one side of the spray box 18. The delivery pipe 19 is a metal pipe with a solenoid valve fixedly installed inside. The solenoid valve is electrically connected to the corresponding four temperature sensors 11. One end of each of the multiple delivery pipes 19 passes through the inner wall of one side of the energy storage cabinet body 1 and extends to the outside of the energy storage cabinet body 1. One end of each of the multiple delivery pipes 19 is fixedly connected to the same shunt pipe 20. The shunt pipe 20 is a metal pipe with a joint 21 welded to the bottom end. The joint 21 is a metal joint used to connect to an external fire protection pipe. When a fire occurs in the battery 8, the corresponding solenoid valve will be in the open state, and the fire extinguishing agent transported through the fire-fighting pipe can be transported to the diversion pipe 20, and then transported to the spray box 18 through the connected delivery pipe 19. The fire extinguishing agent is dispersed and sprayed out by the spray box 18 to achieve timely fire extinguishing of the battery 8.

[0015] Example 3: Reference Figure 3-4 An energy storage system includes the above-mentioned combined energy storage cabinet, and also includes a water inlet pipe 16 and a water outlet pipe 17. The water inlet pipe 16 and the water outlet pipe 17 are both metal pipes, and both pass through multiple partitions 2 and are welded to the multiple partitions 2 respectively. A heat exchange coil 15 is provided on the top of the partition 2. The heat exchange coil 15 is a serpentine metal coil, and both ends of the heat exchange coil 15 pass through the slide rail 3 located on one side and are fixedly connected to the water inlet pipe 16 and the water outlet pipe 17 respectively. The bottom end of the water inlet pipe 16 and the bottom end of the water outlet pipe 17 both pass through the bottom inner wall of one side of the energy storage cabinet body 1 and both extend to the outside of the energy storage cabinet body 1. The bottom end of the water inlet pipe 16 and the bottom end of the water outlet pipe 17 are both connected to the external circulating water chiller. Cold water is delivered to the water inlet pipe 16 by the circulating chiller. The cold water then enters the heat exchange coil 15, exchanges heat with the battery 8, absorbs the heat generated by the battery 8, and then flows back to the circulating chiller through the water outlet pipe 17 for cooling. This cycle dissipates heat from the battery 8. Furthermore, an inverter 22 is installed within the energy storage cabinet 1. The inverter 22 is an electronic device electrically connected to each of the multiple batteries 8. When the stored energy from the battery 8 is output, the inverter 22 converts DC power into AC power, conveniently powering electrical equipment.

[0016] Reference Figure 8 The discharge circuit of the energy storage cabinet is responsible for converting the DC power stored in the battery 8 into AC power for use by the load or for feeding it back to the grid. Its main components are as follows: DC / AC Inverter Circuit: This is the core of the discharge circuit, typically using an inverter 22 to convert DC to AC. By controlling the on / off sequence and timing of the switches, the battery's DC power is converted into sinusoidal AC.

[0017] The inverter control circuit also consists of a controller and a drive circuit. Based on load demand and battery status, the controller generates appropriate control signals to drive the inverter's switches. By detecting parameters such as the output AC voltage, frequency, and phase, and comparing them with given reference values, an algorithm generates PWM control signals to ensure the inverter outputs stable AC power.

[0018] Protection circuit: It has overload protection, short circuit protection and other functions. When the load current exceeds the rated current of the inverter, the overload protection circuit will cut off the output or reduce the output power to protect the inverter and battery from damage.

[0019] However, as is well known to those skilled in the art, the working principles and wiring methods of the battery 8, temperature sensor 11, inverter 22 and solenoid valve are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0020] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0021] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A combined energy storage cabinet, characterized in that: include: An energy storage cabinet (1), wherein one side of an opening of the energy storage cabinet (1) is symmetrically hinged with two door panels (23); A plurality of partitions (2) are installed at equal intervals in the energy storage cabinet (1); A supporting mechanism, mounted on the top of the partition (2), for supporting the battery (8); A plurality of clamping mechanisms are symmetrically arranged on the inner walls of both sides of the energy storage cabinet (1) and are used to clamp and limit the battery (8); A spray mechanism is installed on the inner wall of one side of the energy storage cabinet (1), is connected to the bottoms of the plurality of partitions (2), and has one side extending to the outside of the energy storage cabinet (1); The battery (8) is placed on the support mechanism, the clamping mechanism clamps and limits the battery (8), and when the battery (8) catches fire, the spraying mechanism disperses and sprays the fire extinguishing agent to extinguish the fire.

2. The combined energy storage cabinet according to claim 1, characterized in that: The supporting mechanism comprises: Two slide rails (3) are symmetrically fixedly mounted on the top of the partition (2), and one end of the two slide rails is fixedly mounted with a same baffle (31); A slide bar (4) is slidably connected to the slide rail (3); A support frame (5) connected to a side where the two slide bars (4) are close to each other; A plurality of supporting protrusions (6) are symmetrically arranged on the top of the supporting frame (5); The battery (8) is placed on the plurality of supporting protrusions (6), and the lateral movement of the battery (8) is achieved through the sliding cooperation between the slide bar (4) and the slide rail (3), which facilitates installation or maintenance.

3. The combined energy storage cabinet according to claim 2, characterized in that: A pull plate (7) is connected to one side of the two slide bars (4) close to each other. The pull plate (7) is located on one side of the support frame (5). Pulling the pull plate (7) drives the two slide bars (4) to move laterally, thereby moving the position of the battery (8).

4. The combined energy storage cabinet according to claim 1, characterized in that: The clamping mechanism comprises: A support shaft (9) is fixedly mounted on an inner wall of one side of the energy storage cabinet (1); A first rotating arm (101) and a second rotating arm (102) are respectively rotatably sleeved on the support shaft (9); a clamping plate (10), connected to one end of the first rotating arm (101) and one end of the second rotating arm (102), and used for clamping and positioning the battery (8); After the battery (8) is pushed into the energy storage cabinet (1), the clamping plate (10) is turned over to a horizontal state to clamp and limit the battery (8).

5. The combined energy storage cabinet according to claim 4, characterized in that: Two temperature sensors (11) are symmetrically embedded on the clamping plate (10), and the temperature sensors (11) are in contact with the battery (8) and are used to monitor the temperature of the battery (8); After the clamping plate (10) clamps and positions the battery (8), the temperature sensor (11) is stably attached to the battery (8), and the monitored temperature is transmitted to the backend data center in real time so as to promptly handle the overheating problem of the battery (8).

6. The combined energy storage cabinet according to claim 4, characterized in that: A positioning plate (13) is sleeved on the support shaft (9), and the positioning plate (13) is fixed to an inner wall of one side of the energy storage cabinet (1), and is provided with two jacks at an angle of 60°; An insertion rod (12) is slidably connected to the first rotating arm (101) and is movably engaged with the two insertion holes; A fixing ring (121) fixedly sleeved on the insertion rod (12); A compression spring (14) is sleeved on the insertion rod (12), with both ends fixedly connected to one side of the fixing ring (121) and the first rotating arm (101) respectively; When the clamping plate (10) moves to a clamping or releasing position, the insertion rod (12) is aligned with the corresponding insertion hole, the insertion rod (12) is released, and the compression spring (14) pushes the insertion rod (12) into the insertion hole, braking and limiting the first rotating arm (101), so that the clamping plate (10) remains stable.

7. The combined energy storage cabinet according to claim 1, characterized in that: The spray mechanism comprises: A spray box (18) welded to the bottom of the partition (2); A delivery pipe (19) is welded through one side of the spray box (18), and a solenoid valve is installed inside. The solenoid valve is electrically connected to the corresponding four temperature sensors (11); A shunt pipe (20) fixedly connected to one end of the plurality of delivery pipes (19); A connector (21) is connected to the bottom end of the diversion pipe (20) and is used for connecting to an external fire protection pipe; When the battery (8) catches fire, the corresponding solenoid valve opens, and the fire extinguishing agent enters the spray box (18) through the fire fighting pipe, the diversion pipe (20), and the delivery pipe (19), and is dispersed and sprayed out to extinguish the fire.

8. An energy storage system, characterized in that: The combined energy storage cabinet according to any one of claims 1 to 7 further comprises: The water inlet pipe (16) and the water outlet pipe (17) both pass through the plurality of partitions (2) and are fixedly connected thereto; A heat exchange coil (15) is arranged on the top of the partition (2), with both ends respectively passing through the slide rail (3) on one side and fixedly connected to the water inlet pipe (16) and the water outlet pipe (17); The bottom ends of the water inlet pipe (16) and the water outlet pipe (17) pass through the bottom inner wall of one side of the energy storage cabinet (1) and extend to the outside to connect to the external circulating water chiller; The low-temperature water output by the circulating chiller enters the heat exchange coil (15) through the water inlet pipe (16), exchanges heat with the battery (8), and then flows back to the circulating chiller through the water outlet pipe (17), thereby achieving cooling and heat dissipation of the battery (8).

9. The energy storage system according to claim 8, characterized in that: An inverter (22) is installed in the energy storage cabinet (1), and the inverter (22) is electrically connected to the plurality of batteries (8) respectively. The direct current stored in the batteries (8) is converted into alternating current via the inverter (22) to supply power to the electrical equipment.

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