Modularized distributed efficient liquid cooling energy storage cabinet

Abstract

The invention relates to the field of energy storage cabinets, in particular to a modular distributed efficient liquid cooling energy storage cabinet which comprises a cabinet body, a plurality of energy storage units are arranged in the cabinet body side by side, each energy storage unit comprises a frame body, a plurality of batteries are erected in the frame body up and down, and a liquid cooling assembly is arranged between every two vertically adjacent batteries. The liquid cooling assembly comprises a water pipe arranged on the back face of the frame body, and the water pipe communicates with a plurality of cooling pipes. The water inlet end and the water outlet end of each cooling pipe rotate and communicate with a first rotating connector, the end of each first rotating connector communicates with a middle pipe, and the end of each middle pipe communicates with a second rotating connector. A plurality of cooling pipes are connected in parallel between the two water pipes, each cooling pipe is connected to the water pipe through a first rotary joint and a second rotary joint, and the horizontal height of the upper and lower cooling pipes is flexibly adjusted according to the distance between the upper and lower batteries, so that the cooling pipes can be attached to the surfaces of the batteries to adapt to energy storage cabinets of different models; and heat emitted by the battery can be absorbed more effectively.

Description

Technical Field

[0001] This invention relates to the field of energy storage cabinets, specifically a modular distributed high-efficiency liquid-cooled energy storage cabinet. Background Technology

[0002] Energy storage cabinets are modular and flexibly deployable electrochemical energy storage devices. Modular distributed high-efficiency liquid-cooled energy storage cabinets disassemble traditional containerized liquid-cooled systems into independent standard cabinets, which are pre-installed and pre-adjusted in the factory. On-site, only cabinet connection, pipeline connection, parallel expansion, and grid connection are required for operation, realizing the construction of energy storage stations like building blocks.

[0003] This type of energy storage cabinet has a wide range of applications, such as power storage. In areas with insufficient transformer capacity or large peak-valley price differences, a 300kW-class energy storage cabinet and a 360kW supercharger can be integrated into a "transformer box". It can store more than 600kWh during the off-peak hours at night and output 120kW fast charging to 6 vehicles simultaneously during the peak hours of the day. It can fully charge in just 15 minutes, which can reduce peak load by more than 30% and reduce carbon emissions by 150 tons per station per year. It can also serve as an "emergency hub" for transportation microgrids, such as bus depots and port heavy truck battery swapping stations. The energy storage cabinet stores low-priced electricity at night and charges electric buses or heavy trucks during the day. When the upstream power grid fails, the PCS inside the cabinet can operate off-grid in milliseconds to ensure uninterrupted power supply to the depot and maintain the continuity of public transportation.

[0004] For this type of parallel expansion energy storage cabinet, the batteries are densely arranged and relatively centralized, making heat dissipation a primary issue. Currently, there are two main heat dissipation methods: air cooling and liquid cooling. Liquid cooling is mainly used for energy storage cabinets that generate a lot of heat or for operating conditions with high ambient temperatures. It generally uses liquid cooling pipes laid around the battery structure, with coolant continuously injected into the pipes to carry the heat away from the battery. However, considering that liquid cooling pipes are generally spliced ​​together from metal pipes such as copper, iron, and aluminum pipes, and that metal pipes themselves have hardness, once they are processed, they cannot be modified later. In addition, there are various models of energy storage cabinets, and each model of energy storage cabinet needs to have its cooling pipes designed, assembled, and welded on-site according to the specific model of the energy storage cabinet. This method makes the liquid cooling pipes less flexible and less adaptable. At the same time, on-site design, assembly, and welding undoubtedly affects the overall assembly efficiency of modular distributed high-efficiency liquid-cooled energy storage cabinets.

[0005] Therefore, a modular, distributed, high-efficiency liquid-cooled energy storage cabinet is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a modular distributed high-efficiency liquid-cooled energy storage cabinet of the present invention includes a cabinet body, multiple energy storage units are arranged side by side in the cabinet body, and each energy storage unit includes a frame body, multiple batteries are mounted on the frame body, a liquid cooling component is arranged between two adjacent batteries, and the liquid cooling component includes a water pipe located on the back of the frame body, and multiple cooling pipes are connected to the water pipe. Each of the cooling pipes has a water inlet and an outlet that are both rotatable and connected to a first rotary joint. The end of the first rotary joint is connected to an intermediate pipe, the end of the intermediate pipe is connected to a second rotary joint, and the end of the second rotary joint is connected to a water pipe.

[0008] Preferably, the water pipe includes multiple short pipe sections, with a connector between two adjacent short pipe sections, and a positioning plate is provided on the outer ring of the connector. The ends of the connector are respectively inserted into the two adjacent short pipe sections, and the positioning plate is pressed between the two adjacent short pipe sections.

[0009] Preferably, each section of the short tube has a positioning hole at its end, and each positioning plate has multiple positioning pins on both surfaces, which are embedded in the positioning hole.

[0010] Preferably, each of the cooling pipes is provided with a heat-absorbing plate, and two sets of heat-absorbing sheets are symmetrically arranged on one surface of the heat-absorbing plate. The two sets of heat-absorbing sheets on the same heat-absorbing plate form a heat-conducting groove that surrounds the cooling pipe. The cooling pipe is embedded in the heat-conducting groove, and the other surface of the heat-absorbing plate is attached to the surface of the battery.

[0011] Preferably, the inner surface of the heat-conducting groove has multiple protrusions arranged side by side, the surface of the cooling pipe has a radially formed recess, the cooling pipe is embedded in the heat-conducting groove, and the protrusions are attached to the recess.

[0012] Preferably, each of the frame sidewalls is symmetrically provided with a support plate for supporting the battery. A groove is opened on the inner sidewall of each support plate. The groove is opened along the length of the support plate. An expansion assembly is provided in two grooves at the same horizontal height. The expansion assembly includes a metal strip slidably connected in the groove. A flat bladder is fixed between the two metal strips. The bladder is embedded between the upper and lower cooling pipes.

[0013] Preferably, a sliding assembly is provided between the bottom of the cabinet body and each frame. The sliding assembly is used to drive the frame to move out of the cabinet body. The sliding assembly includes a slide rail provided at the bottom of the cabinet body, and the slide rail is embedded in the rail groove opened at the bottom of the frame. Each of the frames has a deep hole in the middle of its bottom, which extends along the front-to-back direction. A screw is installed inside the deep hole, and a push block is rotatably connected to one end of the screw. The push block is fixed to the back of the bottom of the frame and can push the frame to move along the slide rail.

[0014] Preferably, each slide rail has a telescopic hole at its end, and a rectangular tube is provided in the telescopic hole. One end of the rectangular tube extends to the front end of the frame and is fixedly connected to a baffle. A tension spring is provided in the rectangular tube. One end of the tension spring is fixedly connected to the telescopic hole, and the other end of the tension spring extends to the inside of one end of the rectangular tube and is fixedly connected to a top rod. The middle position of the top rod is rotatably connected to the inner side wall of the rectangular tube, and the other end of the top rod can deflect and extend along the clearance opening opened on the lower surface of one end of the rectangular tube.

[0015] Preferably, each of the trays has multiple limiting holes at one end, with the upper and lower adjacent trays having corresponding upper and lower limiting holes, and a limiting rod passing through both corresponding upper and lower limiting holes.

[0016] Preferably, a support rod is provided between two adjacent frames, and the support rod is used to support the bottom and top of the cabinet.

[0017] The advantages of this invention are: 1. In this invention, multiple cooling pipes are connected in parallel between two water pipes, and each cooling pipe is connected to the water pipe through a first rotary joint and a second rotary joint. The horizontal height of the upper and lower cooling pipes can be flexibly adjusted according to the distance between the upper and lower batteries, so that the cooling pipes can be attached to the surface of the battery, adapting to different models of energy storage cabinets, and more effectively absorbing the heat emitted by the battery.

[0018] 2. In this invention, the designed liquid cooling component can be pre-processed, designed, assembled, and welded in advance. When assembling the energy storage cabinet later, it can be directly assembled and put into use, which can reduce the assembly time of the current energy storage cabinet.

[0019] 3. In this invention, the first rotary joint and the second rotary joint are rotatably connected, which has a certain buffering effect. When the battery squeezes the cooling tube, the first rotary joint and the second rotary joint can be deflected and repositioned accordingly to prevent the battery from forcibly squeezing the cooling tube, causing damage to the cooling tube and leakage. Attached Figure Description

[0020] Figure 1 This is a perspective view of the energy storage cabinet in this invention; Figure 2 This is a rear view of the energy storage cabinet in this invention; Figure 3 This is a first-view perspective perspective view of the frame in this invention; Figure 4 This is a second-view perspective perspective view of the frame in this invention; Figure 5 This is a perspective view of the interaction between the liquid cooling component and the battery in this invention; Figure 6 This is a perspective view of the liquid cooling component in this invention; Figure 7 This is an exploded front view of the water pipe in this invention; Figure 8 This is an exploded perspective view of the water pipe in this invention; Figure 9 This is a perspective view of the cooling pipe in this invention; Figure 10 This is a perspective view of the heat-absorbing sheet in this invention; Figure 11 This is a schematic diagram of the fit between the cooling pipe and the bladder in this invention; Figure 12 This is a three-dimensional view of the capsule in this invention; Figure 13 This is a cross-sectional view of the slide rail and rectangular tube in this invention; Figure 14 This is a perspective view of the cooperation between the slide rail and the rectangular tube in this invention; Figure 15 This is a cross-sectional view of the frame in this invention; Figure 16 This is a perspective view of the cooperation between the tray and the limiting rod in this invention.

[0021] In the diagram: 101. Battery; 1. Cabinet; 2. Frame; 3. Water pipe; 4. Cooling pipe; 5. First rotary joint; 6. Intermediate pipe; 7. Second rotary joint; 8. Short pipe; 9. Insert pipe; 10. Positioning plate; 11. Plug; 12. End cap; 13. Positioning hole; 14. Positioning pin; 15. Heat absorber plate; 16. Heat absorber sheet; 17. Heat conduction groove; 18. Protrusion; 19. Recess; 20. Support plate; 21. Slide groove; 22. Metal strip; 23. Bag body; 24. Slide rail; 25. Rail groove; 26. Deep hole; 27. Screw; 28. Push block; 29. ​​Telescopic hole; 30. Rectangular tube; 31. Baffle; 32. Tension spring; 33. Top rod; 34. Clearance opening; 35. Limiting hole; 36. Limiting rod; 37. Support rod; 38. Window. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6A modular distributed high-efficiency liquid-cooled energy storage cabinet includes a cabinet body 1. Multiple energy storage units are arranged side by side inside the cabinet body 1. Each energy storage unit includes a frame 2. Multiple batteries 101 are mounted vertically inside the frame 2. A liquid cooling component is arranged between two adjacent batteries 101. The liquid cooling component includes a water pipe 3 located on the back of the frame body 2. Multiple cooling pipes 4 are connected to the water pipe 3. The inlet and outlet ends of each cooling pipe 4 are rotatable and connected to a first rotary joint 5. The end of the first rotary joint 5 is connected to an intermediate pipe 6. The end of the intermediate pipe 6 is connected to a second rotary joint 7. The end of the second rotary joint 7 is connected to the water pipe 3. In this embodiment of the invention, a liquid pump system is provided on one side of the cabinet 1 to supply coolant, and an electrical control system is provided on the other side of the cabinet 1 to control the power supply of the overall energy storage cabinet. A front cabinet door is provided on the front side of the cabinet 1, and a rear cover is provided on the back side to close the cabinet 1. Each frame 2 has two vertical water pipes 3 on its back, one being an inlet pipe 3 and the other an outlet pipe 3, such as... Figure 5 and Figure 6 As shown, multiple cooling pipes 4 are connected in parallel between the two water pipes 3, and the connection method of each cooling pipe 4 to the water pipe 3 is as follows. Figure 7 and Figure 8 As shown, the cooling pipes 4 are connected to the water pipe 3 via the first rotary joint 5 and the second rotary joint 7. The horizontal height of the two cooling pipes 4 is flexibly adjusted according to the distance between the upper and lower batteries 101, allowing the cooling pipes 4 to adhere to the surface of the battery 101. This adapts to different types of energy storage cabinets and more effectively absorbs the heat emitted by the battery 101, thus fully cooling the battery 101. In this embodiment, the designed cooling pipes 4 are as follows... Figure 6 As shown, the snake-shaped design allows for the arrangement of longer cooling pipes 4 within a limited space, increasing the contact area between the battery 101 and the cooling pipes 4 and improving the cooling effect of the battery 101. Secondly, the liquid cooling component can be pre-processed, designed, assembled, and welded in advance, so that it can be directly assembled and put into use when assembling the energy storage cabinet later, which can reduce the assembly time of the current energy storage cabinet. Furthermore, the first rotary joint 5 and the second rotary joint 7 are rotatably connected, which has a certain buffering effect. When the battery 101 squeezes the cooling pipe 4, the first rotary joint 5 and the second rotary joint 7 can be deflected accordingly to prevent the battery 101 from forcibly squeezing the cooling pipe 4, causing damage to the cooling pipe 4 and leakage of liquid.

[0024] Reference Figure 6 - Figure 8 The water pipe 3 includes multiple short pipes 8, and a connector 9 is provided between two adjacent short pipes 8. A positioning plate 10 is provided on the outer ring of the connector 9. The positioning plate 10 can insert the connector 9 in half into the two adjacent short pipes 8. The positioning plate 10 is pressed between the two adjacent short pipes 8. The bottom of the water pipe 3 is equipped with a plug 11 and the top is equipped with a cap 12. A pipe extending from the cap 12 communicates with the pump body. Each water pipe 3 is composed of multiple short pipes 8 spliced ​​together end to end. According to the number of batteries 101 in each frame 2, multiple short pipes 8 are spliced ​​together to form the water pipe 3. This splicing operation of the short pipes 8 can be performed on-site at the energy storage cabinet assembly site. If multiple short pipes 8 are pre-assembled, multiple cooling pipes 4 will not have a support and will be prone to bending and deformation. However, when assembling the short pipes 8 on-site, the cooling pipes 4 can be inserted between the upper and lower batteries 101 first, and then the short pipes 8 can be spliced. Finally, the first rotary joint 5 and the second rotary joint 7 can be deflected and adjusted so that the cooling pipes 4 are attached to the surface of the battery 101. This operation can protect the cooling pipes 4 and the insertion and installation of the cooling pipes 4 one by one is more convenient than inserting and installing multiple cooling pipes 4 at the same time.

[0025] Reference Figure 6 - Figure 8 Each section of the short tube 8 has a positioning hole 13 at its end, and each positioning plate 10 has multiple positioning pins 14 on both surfaces, which are embedded in the positioning hole 13. The upper and lower short pipes 8 are connected together by the insertion pipe 9, and then connected together by multiple positioning pins 14. Firstly, in the horizontal direction, it can constrain the relative deflection between the two adjacent short pipes 8 to prevent the cooling pipe 4 from being twisted and deformed. At the same time, in the vertical direction, it can further improve the connection stability between the two adjacent short pipes 8, that is, by relying on the extrusion force between the positioning pins 14 and the positioning holes 13, the separation force of the two short pipes 8 is improved.

[0026] Reference Figure 9 and Figure 10 Each of the cooling pipes 4 is provided with a heat-absorbing plate 15. Two sets of heat-absorbing sheets 16 are symmetrically arranged on one surface of the heat-absorbing plate 15. The two sets of heat-absorbing sheets 16 on the same heat-absorbing plate 15 form a heat-conducting groove 17 that wraps around the cooling pipe 4. The cooling pipe 4 is embedded in the heat-conducting groove 17. The other surface of the heat-absorbing plate 15 is attached to the surface of the battery 101. The heat-absorbing plate 15 is attached to the surface of the battery 101 to intermittently increase the contact area between the cooling pipe 4 and the battery 101, thereby improving the heat absorption effect of the cooling pipe 4. At the same time, the heat-absorbing plate 15 is provided with heat-absorbing sheets 16, which are used to absorb the heat in the air between the batteries 101. The heat that the cooling pipe 4 fails to absorb effectively is absorbed by the heat-absorbing sheets 16 and then transferred to the cooling pipe 4. The design of the heat-conducting groove 17 increases the heat exchange efficiency between the heat-absorbing sheets 16 and the cooling pipe 4. All of these are specific ways to improve the cooling effect of the battery 101.

[0027] Reference Figure 9 and Figure 10The inner surface of the heat conduction groove 17 is provided with a plurality of protrusions 18 arranged side by side, and the surface of the cooling pipe 4 is radially recessed with a recess 19. The cooling pipe 4 is embedded in the heat conduction groove 17, and the protrusions 18 are attached to the recess 19. The protrusion 18 and the recess 19 are designed to firstly restrain the cooling pipe 4 and the heat absorber plate 15, thereby improving the connection stability between the cooling pipe 4 and the heat absorber plate 15. During the process of embedding the cooling pipe 4 together with the heat absorber plate 15 between the upper and lower batteries 101, the heat absorber plate 15 can accurately attach to the specific heat dissipation parts of the battery 101. Then, it increases the effective contact area between the cooling pipe 4 and the heat absorber plate 15, improves the heat exchange efficiency between the cooling pipe 4 and the heat absorber plate 15, and enhances the cooling effect of the battery 101.

[0028] Reference Figure 1 - Figure 5 ,as well as Figure 15 and Figure 16 Each of the frame bodies 2 has a symmetrical support plate 20 for supporting the battery 101 on its side wall. Each support plate 20 has a groove 21 on its inner side wall. The groove 21 is opened along the length of the support plate 20. Two grooves 21 at the same horizontal height are provided with an expansion assembly. The expansion assembly includes a metal strip 22 slidably connected in the groove 21. A flat bladder 23 is fixed between the two metal strips 22. The bladder 23 is embedded between the upper and lower cooling pipes 4. In this embodiment, the tray 20 is mounted on the cabinet 1 by hanging. Specifically, the cabinet 1 is provided with multiple hanging windows 38. The outer side of the tray 20 is hung in the window 38 to support the battery 101. The tray 20 can be flexibly removed. An expansion assembly is assembled between two trays 20 at the same horizontal height. The metal strip 22 is embedded in the slide groove 21. The bladder 23 is embedded between the upper and lower cooling pipes 4. The bladder 23 absorbs heat and expands, which will further compress the cooling pipes 4 and the heat absorption plate 15, improve the adhesion between the heat absorption plate 15 and the battery 101, and improve the heat absorption effect.

[0029] Reference Figure 3 , Figure 13 , Figure 14 and Figure 15 A sliding assembly is provided between the bottom of the cabinet 1 and each frame 2. The sliding assembly is used to drive the frame 2 to move out of the cabinet 1. The sliding assembly includes a slide rail 24 provided at the bottom of the cabinet 1. The slide rail 24 is embedded in the rail groove 25 opened at the bottom of the frame 2. A deep hole 26 is opened in the middle of the bottom of each frame 2. The deep hole 26 is opened along the front and back direction of the frame 2. A screw 27 is provided in the deep hole 26. One end of the screw 27 is rotatably connected to a push block 28. The push block 28 is fixed to the back of the bottom of the frame 2 and can push the frame 2 to move along the slide rail 24. When assembling the battery 101 inside each frame 2, the frame 2 can be pushed out of the cabinet 1 in advance by sliding the assembly, which facilitates the arrangement of the battery 101, circuit and cooling pipe 4 inside each frame 2. Specifically, the screw 27 is rotated on the back of the cabinet 1. The screw 27 rotates and pushes the push block 28. The push block 28 pushes the frame 2. The frame 2 moves slowly forward of the cabinet 1 along the slide rail 24. Similarly, the screw 27 is rotated in the direction. The screw 27 pulls the push block 28. The push block 28 pulls the frame 2 backward to reset.

[0030] Reference Figure 13 and Figure 14 Each slide rail 24 has a telescopic hole 29 at its end. A rectangular tube 30 is provided inside the telescopic hole 29. One end of the rectangular tube 30 extends to the front end of the frame 2 and is fixedly connected to a baffle 31. A tension spring 32 is provided inside the rectangular tube 30. One end of the tension spring 32 is fixedly connected to the telescopic hole 29, and the other end of the tension spring 32 extends to the inside of one end of the rectangular tube 30 and is fixedly connected to a top rod 33. The middle position of the top rod 33 is rotatably connected to the inner wall of the rectangular tube 30, and the other end of the top rod 33 can deflect and extend along the clearance opening 34 opened on the lower surface of one end of the rectangular tube 30. The push rod 33 is rotatably connected to the rectangular tube 30 via a torsion spring. Initially, the push rod 33 is entirely placed inside the rectangular block. When the frame 2 moves out, the bottom front of the frame 2 will press against the baffle 31, which pulls the rectangular tube 30. The rectangular tube 30 gradually extends out of the slide rail 24, and the tension spring 32 is pulled. The tension spring 32 pulls the upper end of the push rod 33. When the tension force of the tension spring 32 is greater than the torsion force of the torsion spring, the push rod 33 deflects and extends out of the rectangular tube 30, and is pushed vertically. On the ground, the frame 2 is supported and held in place. That is, when the frame 2 extends out of the cabinet 1, the outward extension of the frame 2 is supported by the top rod 33 to prevent the frame 2 from becoming unstable and tipping over, or from squeezing, bending, deforming and damaging the screw 27. When the frame 2 is retracted and reset, the tension of the tension spring 32 decreases. When the tension of the tension spring 32 is less than the torque of the torsion spring, the top rod 33 deflects into the rectangular tube 30 under the torque of the torsion spring. At this time, the frame 2 also gradually completes its reset.

[0031] Reference Figure 16 Each of the trays 20 has multiple limiting holes 35 at one end. The limiting holes 35 of two adjacent trays 20 are opposite each other, and a limiting rod 36 passes through the two opposite limiting holes 35. A limiting rod 36 is set on the tray 20. The limiting rod 36 is used to limit the position of the battery 101 on the tray 20. After the battery 101 is placed on the tray 20 one by one, the limiting rod constrains the specific position of each battery 101, and places each battery 101 in place. This facilitates the same arrangement and management of the cooling pipe 4 and the heat absorption plate 15. At the same time, the battery 101 is placed in a uniform position, and the series layout of two adjacent batteries 101 is uniform, the circuit is neat, and it is also convenient for subsequent adjustments.

[0032] Reference Figure 1 and Figure 2 A support rod 37 is provided between two adjacent frames 2. The support rod 37 is used to support the bottom and top of the cabinet 1. The frames 2 are assembled in a modular manner inside the cabinet 1. When the cabinet 1 is not equipped with the frames 2, there is no support inside the cabinet 1, and its top is prone to deformation under stress. Therefore, the support rod 37 is provided. The support rod 37 supports the top of the cabinet 1 so that the energy storage cabinet can be stacked up and down. The support rod 37 provides a fixing surface for the front door and the rear cover of the cabinet 1, that is, the front door and the rear cover are fixed to the support rod 37.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular distributed high-efficiency liquid-cooled energy storage cabinet, comprising a cabinet body, characterized in that: Multiple energy storage units are arranged side by side inside the cabinet, and each energy storage unit includes a frame. Multiple batteries are mounted on the frame, and a liquid cooling component is arranged between two adjacent batteries. The liquid cooling component includes a water pipe located on the back of the frame, and multiple cooling pipes are connected to the water pipe. Each of the cooling pipes has a water inlet and an outlet that are both rotatable and connected to a first rotary joint. The end of the first rotary joint is connected to an intermediate pipe, the end of the intermediate pipe is connected to a second rotary joint, and the end of the second rotary joint is connected to a water pipe.

2. The modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 1, characterized in that: The water pipe includes multiple short pipes, with a connector between two adjacent short pipes, and a positioning plate on the outer ring of the connector. The ends of the connector are inserted into the two adjacent short pipes, and the positioning plate is pressed between the two adjacent short pipes.

3. The modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 2, characterized in that: Each section of the short tube has a positioning hole at its end, and each positioning plate has multiple positioning pins on both surfaces, which are embedded in the positioning hole.

4. The modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 1, characterized in that: Each of the cooling pipes is provided with a heat-absorbing plate. Two sets of heat-absorbing sheets are symmetrically arranged on one surface of the heat-absorbing plate. The two sets of heat-absorbing sheets on the same heat-absorbing plate form a heat-conducting groove that surrounds the cooling pipe. The cooling pipe is embedded in the heat-conducting groove. The other surface of the heat-absorbing plate is attached to the surface of the battery.

5. A modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 4, characterized in that: Multiple protrusions are arranged side by side on the inner surface of the heat conduction groove, and a recess is opened radially on the surface of the cooling pipe. The cooling pipe is embedded in the heat conduction groove, and the protrusions are attached to the recess.

6. The modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 1, characterized in that: Each of the frame sidewalls is symmetrically provided with a support plate for supporting the battery. A groove is opened on the inner sidewall of each support plate. The groove is opened along the length of the support plate. An expansion assembly is provided in two grooves at the same horizontal height. The expansion assembly includes a metal strip slidably connected in the groove. A flat bladder is fixed between the two metal strips. The bladder is embedded between the upper and lower cooling pipes.

7. The modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 1, characterized in that: A sliding assembly is provided between the bottom of the cabinet body and each frame. The sliding assembly is used to drive the frame to move out of the cabinet body. The sliding assembly includes a slide rail provided at the bottom of the cabinet body, which is embedded in a groove opened at the bottom of the frame. Each of the frames has a deep hole in the middle of its bottom, which extends along the front-to-back direction. A screw is installed inside the deep hole, and a push block is rotatably connected to one end of the screw. The push block is fixed to the back of the bottom of the frame and can push the frame to move along the slide rail.

8. A modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 7, characterized in that: Each slide rail has a telescopic hole at its end, and a rectangular tube is provided inside the telescopic hole. One end of the rectangular tube extends to the front end of the frame and is fixedly connected to a baffle. A tension spring is provided inside the rectangular tube. One end of the tension spring is fixedly connected to the telescopic hole, and the other end of the tension spring extends to the inside of one end of the rectangular tube and is fixedly connected to a top rod. The middle position of the top rod is rotatably connected to the inner side wall of the rectangular tube, and the other end of the top rod can deflect and extend along the clearance opening opened on the lower surface of one end of the rectangular tube.

9. A modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 6, characterized in that: Multiple limiting holes are provided at one end of each tray. The limiting holes of two adjacent trays are aligned one to one, and a limiting rod passes through the two opposing limiting holes.

10. A modular distributed high-efficiency liquid-cooled energy storage cabinet according to claim 8, characterized in that: A support rod is provided between two adjacent frames to support the bottom and top of the cabinet.

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