A modular energy storage system and energy storage cabinet

Abstract

The present invention provides a modular energy storage system and an energy storage cabinet, comprising a cabinet body, wherein the cabinet body is provided with two groups, a cabinet door is installed at the front end of the cabinet body, a connection port is opened on the adjacent side of the two groups of cabinet bodies, and a ventilation window is installed on the side of the cabinet body away from the connection port, a battery rack is installed inside the front end of the cabinet body, and a control box is installed inside the rear end of the cabinet body, and a fire extinguishing system is provided on the top of the cabinet body, wherein the fire extinguishing system comprises a square frame, and the square frame is sleeved on the periphery of the battery rack. When two energy storage cabinets are installed side by side, a connecting channel is provided in the middle. On the one hand, the connecting channel connects the connection ports of the two cabinet bodies to realize the communication between the cabinet bodies, thereby improving the heat dissipation and ventilation capabilities, and on the other hand, it is convenient for manual entry to inspect the interior of the cabinet body. In addition, when a fire occurs in a battery cabinet, the connecting channel is automatically isolated and the side with the fire is closed to prevent the spread of the fire, thereby achieving the effect of timely remediation and fire extinguishing.

Description

Technical Field

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

[0002] The battery energy storage cabinet in an energy storage system typically consists of multiple battery energy storage cabinets, which are symmetrically distributed on both sides of the container body. Each battery energy storage cabinet has multiple layers of battery pack storage units. This design allows the energy storage system to be flexibly configured according to demand, thereby improving the efficiency of energy storage and management. In addition, each battery energy storage cabinet is equipped with an early warning system and an escape system, including a main control unit and multiple temperature detectors to ensure safe operation of the system. The energy storage cabinet structure includes core components such as battery modules, battery management system (BMS), energy management system (EMS), control system, and communication interface. The battery module is the heart of the energy storage cabinet, responsible for storing and releasing energy. It usually adopts a modular design and can be flexibly configured according to demand. The BMS monitors the battery's charge and discharge status to ensure that the battery operates within a safe and efficient range. The EMS coordinates energy exchange between the battery modules and the external power grid to achieve optimal energy allocation.

[0003] Because multiple battery cabinets are arranged in parallel in the energy storage system, the heat dissipation effect is easily deteriorated, and there are certain deficiencies in the prevention and elimination of safety hazards. In an emergency, if a battery fire occurs, there is no guarantee that the fire can be extinguished in time. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the present invention aims to provide a modular energy storage system and energy storage cabinet to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. When two energy storage cabinets are installed side by side, a connecting channel is provided in the middle. On the one hand, the connecting channel connects the connection ports of the two cabinets to achieve connectivity between the cabinets, thereby improving the heat dissipation and ventilation capabilities. On the other hand, it facilitates manual entry for internal maintenance of the cabinets. In addition, when a fire occurs in a battery cabinet, the connecting channel is automatically isolated and the fire side is closed to prevent the spread of the fire, thereby achieving timely remediation and fire extinguishing effects.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a modular energy storage cabinet, comprising a cabinet body, wherein the cabinet body is provided with two groups, a cabinet door is installed at the front end of the cabinet body, a connection port is opened on the adjacent side of the two groups of cabinet bodies, and a ventilation window is installed on the side of the cabinet body away from the connection port, a battery rack is installed inside the front end of the cabinet body, and a control box is installed inside the rear end of the cabinet body, a fire extinguishing system is provided on the top of the cabinet body, the fire extinguishing system comprises a square frame, the frame is sleeved on the periphery of the battery rack, and the four corners of the inner wall of the square frame slide along the battery rack, nozzles are installed on the four sides of the square frame, a storage box is installed at the upper end of the cabinet body, heptafluoropropane is stored in the storage box, and the storage box is connected to the nozzle, a connecting channel is provided between the two groups of cabinet bodies, and the connecting channel comprises a connecting frame, the connecting frame covers the periphery of the connection port of the two cabinet bodies, a folding layer is fixed between the two connecting frames, a sealing plate is slidably connected to the rear end surface of the cabinet body on the side of the connection port, and the sealing plate can cover the connection port.

[0006] Furthermore, the fire extinguishing system also includes a slide groove, a slide groove is opened on the outside of each side of the square frame, and a slide seat is slidably sleeved on the slide groove, the upper end of the slide seat slides along the square frame, and the nozzle is installed at the lower end of the slide seat, the top of the nozzle is connected to a bellows, and the other end of the bellows is connected to the storage box.

[0007] Furthermore, a translation screw is installed in the slide groove through a bearing and a driving motor, and the slide seat is threadedly sleeved on the translation screw and slides along the slide groove. The outer side of the cabinet located at the four corners of the battery rack is rotated by bearings and the lifting screw is driven by a motor built into the bottom of the cabinet, and the square frame is threadedly sleeved on the surface of the lifting screw.

[0008] Furthermore, temperature sensors are fixedly installed on both sides of the box located at the bottom of each nozzle.

[0009] Furthermore, the connecting channel also includes a pulley, two pulleys are symmetrically installed on the bottom of the connecting frame, a second electric push rod is fixed on the surface of the cabinet between the two pulleys, and the extended end of the second electric push rod is fixedly connected to the connecting frame, and the movement directions of the second electric push rods at the bottom of the two cabinets are opposite.

[0010] Furthermore, the cabinet body is fixed with mounting plates at the top and bottom on both sides of the connection port, and the outer walls on both sides of the connection frame are located on the inner side of the mounting plates. A first electric push rod is fixed to the outer end of the mounting plate, and the connection frame is provided with a socket at a position corresponding to the extended end of the first electric push rod, and the extended end of the first electric push rod can be inserted into the socket.

[0011] Furthermore, the cabinet body is fixed with a limit frame on the outer wall of the top and bottom of the sealing plate, and the top and bottom of the sealing plate slide along the limit frame. The connecting frame is symmetrically rotated by the rotating shaft on one side facing the sealing plate, and the other end of the connecting rod is rotatably connected to the sealing plate through the rotating shaft.

[0012] Furthermore, a zipper device is provided on the middle surface of the folding layer.

[0013] A modular energy storage system includes a fire extinguishing system, a heat dissipation system, a modular high-voltage box, a modular converter, a modular battery box, an AC circuit breaker, a DC circuit breaker, and a power distribution device.

[0014] Furthermore, the modular high-voltage box, modular converter, AC circuit breaker, DC circuit breaker and distribution devices are installed inside the control box, and the modular battery box is installed on the battery rack.

[0015] Beneficial effects of the present invention:

[0016] 1. In the present invention, after the connecting frame on the side where the fire occurs is separated from the connecting port, as the connecting frame moves, the connecting rod pulls the sealing plate toward the connecting port until the connecting frame is blocked to prevent the fire from spreading. The movement of the sealing plate is guided and limited by the limit frame to seal the connecting port. Similarly, when the connecting frame moves closer to the connecting port, the connecting rod pushes the sealing plate outward to open the connecting port, thereby facilitating the connection between the two cabinets and improving the ventilation and heat dissipation effect.

[0017] 2. The present invention can open the folding layer through the zipper device in the middle of the folding layer, thereby facilitating maintenance personnel to inspect the interior of the cabinet through the connecting passage and the connecting port.

[0018] 3. The present invention locks the connection frame by inserting the extended end of the first electric push rod on the mounting plate into the socket of the connection frame. When a fire occurs inside a cabinet on one side, the extended end of the first electric push rod on the side of the connection frame connected thereto is retracted, and the second electric push rod corresponding to the lower end pulls the connection frame quickly away from the cabinet to prevent the fire from spreading to the safe interior of the cabinet. The elasticity of the folding layer facilitates the movement of the connection frame.

[0019] 4. The present invention drives the up and down movement of the box by the lifting screw, and can cooperate with the temperature sensor at the bottom of each side of the box to detect the temperature inside the cabinet, so that the detection sensitivity is higher. When the temperature sensor transmits an abnormal signal, the nozzle sprays heptafluoropropane inside the cabinet through the bellows and the storage box to extinguish the fire. The lifting screw drives the movement of the box, and the translation screw drives the horizontal movement of the slide and the nozzle, so that the heptafluoropropane spraying range is more comprehensive and efficient, and the fire extinguishing work is carried out quickly.

[0020] 5. Compared with the prior art, the present invention provides a connecting channel between two energy storage cabinets when they are installed side by side. On the one hand, the connecting channel connects the connection ports of the two cabinets, achieving connectivity between the cabinets, thereby improving the heat dissipation and ventilation capabilities. On the other hand, it facilitates manual access to the interior of the cabinet for maintenance. In addition, when a fire occurs in a battery cabinet, the connecting channel automatically isolates and closes the fire side to prevent the spread of the fire, achieving timely remediation and fire extinguishing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a modular energy storage cabinet of the present invention;

[0022] Figure 2 This is a schematic diagram of a modular energy storage cabinet with its door open according to the present invention;

[0023] Figure 3 This is a schematic diagram of the interior of a modular energy storage cabinet of the present invention;

[0024] Figure 4 This is a structural schematic diagram of a fire extinguishing system of a modular energy storage cabinet of the present invention;

[0025] Figure 5 This is a schematic diagram of the bottom structure of the connection channel of a modular energy storage cabinet of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection between the connection frame and the sealing plate of a modular energy storage cabinet of the present invention;

[0027] Figure 7 This is a schematic diagram of the separation of the connection frame and connection port of a modular energy storage cabinet of the present invention.

[0028] In the figure: 1. Cabinet; 11. Battery rack; 12. Control box; 13. Sealing plate; 14. Connecting port; 2. Connecting channel; 21. Folding layer; 22. Zipper device; 23. Connecting frame; 24. Pulley; 25. Mounting plate; 26. First electric push rod; 27. Connecting rod; 28. Limiting frame; 29. ​​Socket; 3. Fire extinguishing system; 31. Storage box; 32. Frame; 33. Nozzle; 34. Slide; 35. Translation screw; 36. Slide seat; 37. Bellows; 38. Temperature sensor; 39. Lifting screw; 4. Ventilation window; 5. Second electric push rod. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] See also Figures 1 to 7The present invention provides a technical solution: a modular energy storage cabinet, comprising a cabinet body 1, wherein the cabinet body 1 is provided with two groups, a cabinet door is installed at the front end of the cabinet body 1, a connection port 14 is provided on the adjacent side of the two groups of cabinet bodies 1, and a ventilation window 4 is installed on the side of the cabinet body 1 away from the connection port 14, a battery rack 11 is installed inside the front end of the cabinet body 1, and a control box 12 is installed inside the rear end of the cabinet body 1, a fire extinguishing system 3 is provided on the top of the cabinet body 1, and the fire extinguishing system 3 includes a square frame 32, the square frame 32 is sleeved on the periphery of the battery rack 11, and the four corners of the inner wall of the square frame 32 slide along the battery rack 11, and the four sides of the square frame 32 are installed with nozzles 33, and a storage box 31 is installed on the upper end of the cabinet body 1, and heptafluoropropane is stored in the storage box 31, and the storage box 31 is connected to the nozzle 33. A connecting channel 2 is provided between the two groups of cabinets 1, and the connecting channel 2 includes a connecting frame 23, which covers the periphery of the connecting port 14 of the two cabinets 1, and a folding layer 21 is fixed between the two connecting frames 23. A sealing plate 13 is slidably connected to the rear end surface of the cabinet 1 on one side of the connecting port 14, and the sealing plate 13 can cover the connecting port 14. When using the device, a connecting channel 2 is installed between the two adjacent groups of cabinets 1, and cooperates with the ventilation window 4 on the outside of the cabinet 1. A fan or a refrigeration equipment can be installed inside the ventilation window 4 to dissipate heat for the connected cabinets 1 and improve air flow. When a fire occurs in a cabinet 1, the connecting channel 2 quickly blocks the cabinet 1, and the fire is quickly extinguished through the fire extinguishing system 3 inside the cabinet 1 to prevent further spread of the fire.

[0031] In this embodiment, the fire extinguishing system 3 also includes a slide 34. A slide 34 is provided on the outside of each side of the frame 32, and a slide seat 36 is slidably sleeved on the slide 34. The upper end of the slide seat 36 slides along the frame 32, and the nozzle 33 is installed at the lower end of the slide seat 36. The top of the nozzle 33 is connected to a bellows 37, and the other end of the bellows 37 is connected to the storage box 31. A translation screw 35 is installed in the slide 34 through a bearing and a drive motor. The slide 36 is threadedly sleeved on the translation screw 35 and slides along the slide 34. The outer side of the cabinet 1 located at the four corners of the battery rack 11 is rotatably installed with a lifting screw 39 through a bearing, and the lifting screw 39 is driven by a motor built into the bottom of the cabinet 1. The box 32 is threadedly sleeved on the surface of the lifting screw 39. The box 32 is located on both sides of the bottom of each nozzle 33 and is fixed with temperature sensors 38. The lifting screw 39 drives the box 32 to move up and down, and the temperature sensor 38 at the bottom of each side of the box 32 can be used to detect the temperature inside the cabinet 1, so that the detection sensitivity is higher. When the temperature sensor 38 transmits an abnormal signal, the nozzle 33 sprays HFC-227ea inside the cabinet 1 through the bellows 37 and the storage box 31 to extinguish the fire. The lifting screw 39 drives the movement of the box 32, and the translation screw 35 drives the slide 36 and the nozzle 33 to move horizontally, so that the spraying range of HFC-227ea is more comprehensive and efficient, and the fire extinguishing work is carried out quickly.

[0032] In this embodiment, the connecting channel 2 also includes a pulley 24, and two pulleys 24 are symmetrically installed at the bottom of the connecting frame 23. A second electric push rod 5 is fixed to the surface of the cabinet 1 between the two pulleys 24, and the extended end of the second electric push rod 5 is fixedly connected to the connecting frame 23. The movement directions of the second electric push rods 5 at the bottom of the two cabinets 1 are opposite. The cabinet 1 is fixed with mounting plates 25 on the top and bottom on both sides of the connecting port 14, and the outer walls on both sides of the connecting frame 23 are located on the inner side of the mounting plates 25. A first electric push rod 26 is fixed to the outer end of the mounting plate 25. A socket 29 is provided at the position of the connecting frame 23 corresponding to the extended end of the first electric push rod 26, and the extended end of the first electric push rod 26 can be inserted into the socket 29. A zipper device 22 is provided on the middle surface of the folding layer 21. The zipper device 22 in the middle of the folding layer 21 can open the folding layer 21, thereby facilitating maintenance personnel to The connecting channel 2 and the connecting port 14 are used to inspect the interior of the cabinet 1. This method is used when the front cabinet 1 is opened and the operation is inconvenient. The two connecting frames 23 cover the connecting ports 14 of the two cabinets 1. The extended end of the first electric push rod 26 on the mounting plate 25 is inserted into the jack 29 of the connecting frame 23 to lock the connecting frame 23. When a fire occurs inside the cabinet 1 on one side, the extended end of the first electric push rod 26 on the side of the connecting frame 23 connected to it is retracted, and the second electric push rod 5 corresponding to the lower end pulls the connecting frame 23 quickly away from the cabinet 1 to prevent the fire from spreading to the safe interior of the cabinet 1. The movement of the connecting frame 23 is facilitated by the elasticity of the folding layer 21. First, the abnormal temperature is detected by the temperature sensor 38 and the electrical signal is transmitted to the system end. The system simultaneously sends a signal to the second electric push rod 5 and the fire extinguishing system 3, the connecting channel 2 is separated, and the isolated cabinet 1 is subjected to a separate fire extinguishing.

[0033] In this embodiment, the cabinet 1 is located on the outer wall of the top and bottom of the sealing plate 13, and the top and bottom of the sealing plate 13 slide along the limit frame 28. The connecting frame 23 is symmetrically installed with two sets of connecting rods 27 on one side of the sealing plate 13 through a rotating shaft, and the other end of the connecting rod 27 is rotatably connected to the sealing plate 13 through a rotating shaft. After the connecting frame 23 is separated from the connecting port 14 on the side where a fire occurs, as the connecting frame 23 moves, the connecting rod 27 pulls the sealing plate 13 toward the connecting port 14 until the connecting frame 23 is blocked to prevent the fire from spreading. The movement of the sealing plate 13 is guided and limited by the limit frame 28 to seal the connecting port 14. Similarly, when the connecting frame 23 moves closer to the connecting port 14, the connecting rod 27 pushes the sealing plate 13 to move outward, opening the connecting port 14, facilitating the connection between the two cabinets 1 and improving the ventilation and heat dissipation effect.

[0034] A modular energy storage system, comprising a fire extinguishing system 3, a heat dissipation system, a modular high-voltage box, a modular converter, a modular battery box, an AC circuit breaker, a DC circuit breaker and a distribution device. The modular high-voltage box, modular converter, AC circuit breaker, DC circuit breaker and distribution device are installed inside a control box 12, and the modular battery box is installed on a battery rack 11. The distribution line is connected to the AC side of the modular converter and the upstream switch of the distribution device through the AC circuit breaker, the DC side of the modular converter is connected to the upstream of the DC circuit breaker, and the downstream of the DC circuit breaker is connected to the modular high-voltage box, which is connected to the modular battery box. For this part of the technical content, please refer to the technical method in CN214100871U.

[0035] When using the device, a connecting channel 2 is installed between two adjacent groups of cabinets 1, which cooperate with the ventilation windows 4 on the outside of the cabinets 1. A fan or a refrigeration device can be installed inside the ventilation windows 4 to dissipate heat from the connected cabinets 1 and improve air flow. When a fire occurs in one of the cabinets 1, the two connecting frames 23 cover the connecting ports 14 of the two cabinets 1, and the extended end of the first electric push rod 26 on the mounting plate 25 is inserted into the jack 29 of the connecting frame 23 to lock the connecting frame 23. When a fire occurs inside the cabinet 1 on one side, the extended end of the first electric push rod 26 on the side of the connecting frame 23 connected to it is retracted, and the second electric push rod 5 corresponding to the lower end pulls the connecting frame 23 quickly away from the cabinet 1 to prevent the fire from spreading to the safe interior of the cabinet 1. The movement of the connecting frame 23 is facilitated by the elasticity of the folding layer 21. After the connecting frame 23 on the side where the fire occurs is separated from the connecting port 14, as the connecting frame 23 moves, the connecting rod 27 pulls the sealing plate 13 toward the connecting frame. The interface 14 moves until it blocks the connecting frame 23 to prevent the fire from spreading. The movement of the sealing plate 13 is guided and limited by the limit frame 28 to seal the connecting port 14. Similarly, when the connecting frame 23 moves closer to the connecting port 14, the connecting rod 27 pushes the sealing plate 13 to move outward, opening the connecting port 14 to facilitate the connection between the two cabinets 1 and improve the ventilation and heat dissipation effect. The box 32 is driven up and down by the lifting screw 39, and the temperature sensor 38 at the bottom of each side of the box 32 can be used to detect the temperature inside the cabinet 1, so that the detection sensitivity is higher. When the temperature sensor 38 transmits an abnormal signal, the nozzle 33 sprays HFC-227ea inside the cabinet 1 through the bellows 37 and the storage box 31 to extinguish the fire. The lifting screw 39 drives the movement of the box 32, and the translation screw 35 drives the slide 36 and the nozzle 33 to move horizontally, so that the spraying range of HFC-227ea is more comprehensive and efficient, and the fire is extinguished quickly to avoid further spread of the fire.

[0036] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A modular energy storage cabinet, comprising a cabinet body (1), characterized in that: The cabinet (1) is provided with two groups, the front end of the cabinet (1) is provided with a cabinet door, the adjacent sides of the two groups of cabinets (1) are provided with a connection port (14), and the side of the cabinet (1) away from the connection port (14) is provided with a ventilation window (4), the front end of the cabinet (1) is provided with a battery rack (11), and the rear end of the cabinet (1) is provided with a control box (12), the top of the cabinet (1) is provided with a fire extinguishing system (3), the fire extinguishing system (3) includes a square frame (32), the square frame (32) is sleeved on the periphery of the battery rack (11), and the four corners of the inner wall of the square frame (32) slide along the battery rack (11), and the box (32) Nozzles (33) are installed on the four sides of the cabinet (1), a storage box (31) is installed on the upper end of the cabinet (1), heptafluoropropane is stored in the storage box (31), and the storage box (31) is connected to the nozzle (33), a connecting channel (2) is provided between the two groups of cabinets (1), and the connecting channel (2) includes a connecting frame (23), the connecting frame (23) covers the periphery of the connecting port (14) of the two cabinets (1), a folding layer (21) is fixed between the two connecting frames (23), a sealing plate (13) is slidably connected to the rear end surface of the cabinet (1) on one side of the connecting port (14), and the sealing plate (13) can cover the connecting port (14).

2. A modular energy storage cabinet according to claim 1, characterized in that: The fire extinguishing system (3) further comprises a slide groove (34), wherein a slide groove (34) is provided on the outer side of each side of the square frame (32), and a slide seat (36) is slidably sleeved on the slide groove (34), the upper end of the slide seat (36) slides along the square frame (32), and the nozzle (33) is installed at the lower end of the slide seat (36), the top of the nozzle (33) is connected to a bellows (37), and the other end of the bellows (37) is connected to the storage box (31).

3. The modular energy storage cabinet according to claim 2, characterized in that: A translation screw (35) is installed in the slide groove (34) through a bearing and a driving motor, and the slide seat (36) is threadedly sleeved on the translation screw (35) and slides along the slide groove (34). The cabinet (1) is located on the outer side of the four corners of the battery rack (11) and is rotatably installed with a lifting screw (39) through a bearing, and the lifting screw (39) is driven by a motor built into the bottom of the cabinet (1). The frame (32) is threadedly sleeved on the surface of the lifting screw (39).

4. The modular energy storage cabinet according to claim 3, characterized in that: The square frame (32) is located at both sides of the bottom of each nozzle (33) and is fixedly mounted with temperature sensors (38).

5. The modular energy storage cabinet according to claim 1, characterized in that: The connecting channel (2) further comprises a pulley (24), two pulleys (24) are symmetrically mounted on the bottom of the connecting frame (23), a second electric push rod (5) is fixed on the surface of the cabinet (1) between the two pulleys (24), and an extended end of the second electric push rod (5) is fixedly connected to the connecting frame (23), and the movement directions of the second electric push rods (5) at the bottom of the two cabinets (1) are opposite.

6. The modular energy storage cabinet according to claim 5, characterized in that: The cabinet (1) is fixed with mounting plates (25) at the top and bottom on both sides of the connection port (14), and the outer walls of the connection frame (23) are located on the inner side of the mounting plates (25). A first electric push rod (26) is fixed to the outer end of the mounting plate (25). The connection frame (23) is provided with a socket (29) at a position corresponding to the extended end of the first electric push rod (26), and the extended end of the first electric push rod (26) can be inserted into the socket (29).

7. The modular energy storage cabinet according to claim 6, characterized in that: The cabinet (1) is provided with a limit frame (28) fixed on the outer wall of the top and bottom of the sealing plate (13), and the top and bottom of the sealing plate (13) slide along the limit frame (28). Two sets of connecting rods (27) are symmetrically rotated by a rotating shaft on one side of the connecting frame (23) facing the sealing plate (13), and the other end of the connecting rod (27) is rotatably connected to the sealing plate (13) via the rotating shaft.

8. The modular energy storage cabinet according to claim 7, characterized in that: A zipper device (22) is provided on the middle surface of the folded layer (21).

9. A modular energy storage system, comprising the modular energy storage cabinet according to claim 1, characterized in that: The energy storage system further includes a fire extinguishing system (3), a heat dissipation system, a modular high-voltage box, a modular converter, a modular battery box, an AC circuit breaker, a DC circuit breaker, and a power distribution device.

10. A modular energy storage system according to claim 9, characterized in that: The modular high-voltage box, modular converter, AC circuit breaker, DC circuit breaker and power distribution device are installed inside the control box (12), and the modular battery box is installed on the battery rack (11).

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