Energy storage cabinet liquid cooling device

Abstract

The utility model provides a liquid cooling device for an energy storage cabinet, which comprises a cabinet body, a first mounting cavity and a second mounting cavity which are formed in the cabinet body, the front ends of the first mounting cavity and the second mounting cavity are open, a cooling liquid tank is arranged in the second mounting cavity, an energy storage module and a cooling pipeline are arranged in the first mounting cavity, and a liquid inlet interface and a liquid outlet interface are respectively arranged on two sides of the front end of the energy storage module. The cooling pipeline comprises a liquid inlet pipe and a liquid outlet pipe which are arranged on the two sides of the open end of the first installation cavity, a first branch pipe and a second branch pipe corresponding to the energy storage module are arranged on the liquid inlet pipe and the liquid outlet pipe respectively, and the first branch pipe and the second branch pipe are flexible pipes. The first branch pipe and the second branch pipe are connected with the liquid inlet connector and the liquid outlet connector through quick connectors correspondingly, and the upper end of the liquid inlet pipe and the upper end of the liquid outlet pipe extend into the second installation cavity and are connected with the cooling liquid box to form a circulation pipeline. The liquid cooling device of the energy storage cabinet is compact in structure, reasonable in layout, convenient to assemble and disassemble, high in cooling efficiency, good in use reliability, convenient and labor-saving to maintain and long in service life.

Description

Technical Field

[0001] This utility model relates to an energy storage cabinet, and more particularly to a liquid cooling device for an energy storage cabinet. Background Technology

[0002] With the increasing global demand for sustainable energy, wind and solar power are gaining popularity due to their clean and renewable characteristics. However, as unstable renewable energy sources, their power generation is affected by weather and time, resulting in intermittent and discontinuous power supply. To effectively utilize wind and solar energy, it is essential to develop efficient and reliable energy storage solutions to smooth the power generation curve, improve energy efficiency, and ultimately provide stable power support for various applications.

[0003] Energy storage cabinets are critical energy storage devices designed to address the challenges posed by the aforementioned instabilities. They store peak electricity generated during the conversion of wind and solar power into electricity and release it when needed. Energy storage cabinets play a vital role in improving the stability and reliability of renewable energy grids. However, as energy storage cabinets generate significant heat during operation, especially during charging and discharging, failure to cool them promptly can negatively impact battery performance, shorten their lifespan, and potentially pose safety hazards. Traditional cooling methods for wind and solar power systems, such as natural air cooling or finned heat dissipation, are limited in effectiveness for high-power-density energy storage cabinets and fail to meet the requirements for efficient cooling.

[0004] Therefore, in order to improve cooling efficiency and effect, liquid cooling is also used in the existing technology. However, due to the influence of structure and layout, it is inconvenient to assemble, affecting later maintenance and upkeep. At the same time, it is not compact enough in structure. Utility Model Content

[0005] Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to provide a liquid cooling device for energy storage cabinets that is compact in structure, reasonable in layout, easy to install and disassemble, easy to maintain and have good cooling effect.

[0007] Technical solutions to the problem

[0008] This utility model provides a liquid cooling device for an energy storage cabinet, including a cabinet body 1. The cabinet body 1 has a first mounting cavity 1a and a second mounting cavity 1b with an open front end. A coolant tank 6 is disposed in the second mounting cavity 1b. An energy storage module 2 and a cooling pipe 3 are disposed in the first mounting cavity 1a. Multiple energy storage modules 2 are arranged equidistantly vertically. Each energy storage module 2 has an inlet and an outlet liquid interface on both sides of its front end. The cooling pipe 3 includes inlet pipes 31 disposed on both sides of the open end of the first mounting cavity 1a. The inlet pipe 31 and the outlet pipe 32 are respectively provided with a first branch pipe 331 and a second branch pipe 332 corresponding to the energy storage module 2. The first branch pipe 331 and the second branch pipe 332 are flexible pipes. The first branch pipe 331 and the second branch pipe 332 are connected to the inlet interface and the outlet interface respectively through quick connectors 4. The upper ends of the inlet pipe 31 and the outlet pipe 32 extend into the second mounting cavity 1b and are connected to the coolant tank 6 to form a circulation pipeline.

[0009] Furthermore, the liquid inlet pipe 31 includes a vertically arranged liquid inlet pipe I 31a, the upper end of which is bent toward the second mounting cavity to form a horizontal liquid inlet pipe II 31b. The liquid inlet pipe II 31b extends into the second mounting cavity 1b and connects to the liquid outlet end of the coolant tank 6. The liquid outlet pipe 32 includes a vertically arranged liquid outlet pipe I 32a, the upper end of which is bent toward the second mounting cavity to form a horizontal liquid outlet pipe II 32b. The liquid outlet pipe II 32b extends into the second mounting cavity 1b and connects to the liquid inlet end of the coolant tank 6. The first branch pipe 331 and the second branch pipe 332 are respectively arranged on the liquid inlet pipe I 31a and the liquid outlet pipe I 32a.

[0010] Furthermore, the inlet pipe II 31b and / or the outlet pipe II 32b are provided with regulating valves 39 for adjusting the flow rate.

[0011] Furthermore, the inlet pipe I 31a and the outlet pipe I 32a include alternating straight pipes 34 and three-way valves 35, with the first branch pipe 331 and the second branch pipe 332 disposed on the three-way valve 35.

[0012] Furthermore, the liquid inlet and the liquid outlet are arranged vertically upwards, and the quick connector 4 is a right-angle quick connector.

[0013] Furthermore, the cabinet 1 is provided with a vertical partition 11, which divides the cabinet into a first mounting cavity 1a and a second mounting cavity 1b. The vertical partition 11 is provided with a hole for the liquid inlet pipe II 31b and the liquid outlet pipe II 32b to pass through. A sealing element 5 is provided between the hole and the liquid inlet pipe II 31b and the liquid outlet pipe II 32b.

[0014] Furthermore, the sealing element 5 includes a fixing seat 51 that is fitted onto the vertical partition 11 and fixed with screws. A sealing ring 53 is provided between the contact surface of the fixing seat 51 and the vertical partition 11. The fixing seat 51 is provided with a pipeline interface. The two ends of the pipeline interface extend into the first mounting cavity 1a and the second mounting cavity 1b respectively and serve as transfer interfaces.

[0015] Furthermore, the first branch pipe 331 and the second branch pipe 332 are L-shaped.

[0016] Furthermore, the first branch pipe 331 and the second branch pipe 332 include a first segment and a second segment connected to each other, and the included angle between the first segment and the second segment is greater than 110 degrees and less than or equal to 150 degrees.

[0017] Furthermore, the first mounting cavity 1a is provided with a support frame with an open front end, and an mounting area for mounting the energy storage module 2 is formed within the support frame. The liquid inlet pipe 31 and the liquid outlet pipe 32 are located at the front end of the support frame and outside the mounting area.

[0018] Furthermore, the first mounting cavity 1a is a sealed cavity and has a heat insulation layer on its side wall.

[0019] Furthermore, the first branch pipe 331 and the second branch pipe 332 are arranged horizontally.

[0020] Furthermore, the straight pipe 34 is fixed to the inner wall of the first mounting cavity 1a by a clamp.

[0021] Furthermore, the quick connector 4 includes an L-shaped right-angle connector 41, with a female connector 42 fixed to the head of the right-angle connector 41. The end of the female connector 42 is provided with a mating hole 420, and the side wall of the female connector 42 is provided with a slot 421 communicating with the mating hole 420. The axis of the slot 421 is perpendicular to the axis of the mating hole 420. A U-shaped latch 43 is inserted into the slot 421, and the inner wall of the latch 43 is provided with a protrusion forming a snap-fit ​​part 433.

[0022] Furthermore, the inner sides of both ends of the latch 43 are provided with first slots 4310, and the side wall of the slot 421 is provided with first buckles 422. When the latch 43 is inserted to the inner limit position, the first buckles 422 are engaged with the first slots 4310 and locked.

[0023] Furthermore, the two ends of the latch 43 are provided with a prying part 432 for prying outward to unlock.

[0024] Furthermore, the outer wall of the latch 43 is provided with a limiting groove, and the inner wall of the slot 421 is provided with a limiting protrusion. The limiting protrusion is located in the limiting groove and can limit the movement of the latch 43.

[0025] Beneficial effects

[0026] This utility model relates to a liquid cooling device for energy storage cabinets. The optimized design of the cooling pipe structure improves the device's reliability and ease of maintenance while ensuring effective cooling. Furthermore, the optimized design significantly enhances the space utilization of the energy storage cabinet, enabling future system upgrades and functional expansions. During the installation and removal of energy storage modules, this structure effectively prevents damage to the cooling pipes, extending the equipment's service life. This utility model's liquid cooling device for energy storage cabinets features a compact structure, reasonable layout, convenient installation and removal, high cooling efficiency, good reliability, easy maintenance, low cost, and long service life. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the liquid cooling device for the energy storage cabinet of this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the liquid cooling device for the energy storage cabinet of this utility model;

[0029] Figure 3 This is a schematic diagram of the energy storage module of the liquid cooling device for the energy storage cabinet of this utility model;

[0030] Figure 4 middle Figure 3 Enlarged view of section A in the middle;

[0031] Figure 5 This is a schematic diagram of the cooling pipeline of the liquid cooling device for the energy storage cabinet of this utility model;

[0032] Figure 6 for Figure 5 Enlarged view of section B;

[0033] Figure 7 This is a schematic diagram of the cooling pipes of the liquid cooling device for the energy storage cabinet of this utility model from another angle.

[0034] Figure 8 for Figure 7 Enlarged view of section C;

[0035] Figure 9 This is a schematic diagram of the sealing component of the liquid cooling device for the energy storage cabinet of this utility model;

[0036] Figure 10 This is a schematic diagram of the quick connector of the liquid cooling device for the energy storage cabinet of this utility model;

[0037] Figure 11This is a cross-sectional view of the quick connector of the liquid cooling device for the energy storage cabinet of this utility model;

[0038] Figure 12 This is an exploded structural diagram of the quick connector of the liquid cooling device for the energy storage cabinet of this utility model;

[0039] Figure 13 This is a cross-sectional view of the quick connector of the liquid cooling device for the energy storage cabinet of this utility model;

[0040] Figure 14 This is a cross-sectional view of the quick connector of the liquid cooling device for the energy storage cabinet of this utility model in the locked state. Detailed Implementation

[0041] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0042] See Figures 1-14 This utility model provides a liquid cooling device for an energy storage cabinet, including a cabinet 1. The cabinet 1 is generally rectangular. A vertical partition 11 is provided inside the cabinet 1, which divides the cabinet into a first mounting cavity 1a and a second mounting cavity 1b. The first mounting cavity 1a is used to place the energy storage module, and the second mounting cavity 1b is used to install the liquid cooling system (coolant tank 6) and control device. The front ends of the first mounting cavity and the second mounting cavity are both hinged with doors, which make the first mounting cavity a sealed cavity. At the same time, a heat insulation layer is provided on the side wall of the first mounting cavity to prevent external heat from affecting it.

[0043] Specifically, an energy storage module 2 and a cooling pipeline 3 are provided in the first mounting cavity 1a. There are multiple energy storage modules 2, which are equidistantly arranged vertically. Each energy storage module 2 includes a housing and a battery unit disposed within the housing. A liquid cooling cavity is provided inside the housing, and the battery unit is located within the liquid cooling cavity. The battery unit is efficiently cooled by the coolant. An inlet port and an outlet port 22 are respectively provided on both sides of the front end of the energy storage module 2. They are connected to the internal cooling cavity and serve as the inlet and outlet ends of the cooling cavity. The inlet port and the outlet port are cylindrical, and an annular groove 221 is provided on their side wall as a locking groove for a quick connector. In this embodiment, the inlet port and the outlet port are vertically upward, which facilitates quick docking and reasonable pipeline layout.

[0044] The cooling pipe 3 includes an inlet pipe 31 and an outlet pipe 32 disposed on both sides of the open end (front end) of the first mounting cavity 1a. Specifically, the inlet pipe 31 and outlet pipe 32 are respectively disposed on both sides of the front end of the first mounting cavity, arranged parallel to each other and perpendicular to the horizontal plane. A branch pipe 33 corresponding to an energy storage module is provided on each of the inlet and outlet pipes. Specifically, the inlet pipe 31 has a first branch pipe 331 corresponding to each energy storage module 2, connected to the inlet interface of the energy storage module. The outlet pipe 32 has a second branch pipe 332 corresponding to each energy storage module 2, connected to the outlet interface. The first branch pipe 331 and the second branch pipe 332 are symmetrically arranged. In this application, the first branch pipe 331 and the second branch pipe 332... 2 is a flexible tube that can adapt to the layout of different energy storage modules while ensuring unobstructed flow of coolant. It is L-shaped and includes a first section and a second section that are connected to each other. The angle between the first section and the second section is greater than 110 degrees and less than or equal to 150 degrees, forming an obtuse angle greater than 90 degrees, which facilitates layout and assembly. In this embodiment, quick connectors 4 are provided at the ends of the first branch pipe 331 and the second branch pipe 332. The quick connectors are connected to the inlet and outlet ports respectively. The design of the quick connectors 4 makes connection and disassembly simple and quick, greatly improving the convenience of maintenance. The upper ends of the inlet pipe 31 and the outlet pipe 32 extend into the second mounting cavity 1b and are connected to the inlet and outlet ends of the coolant tank 6 respectively to form a circulation pipeline.

[0045] In this application, the liquid inlet pipe 31 includes a vertically arranged liquid inlet pipe I 31a, the upper end of which is bent at 90 degrees toward the second mounting cavity to form a horizontal liquid inlet pipe II 31b. The liquid inlet pipe II 31b is parallel to the width direction of the cabinet 1 and extends into the second mounting cavity 1b, connecting to the liquid outlet end of the coolant tank 6. The liquid outlet pipe 32 includes a vertically arranged liquid outlet pipe I 32a, the upper end of which is bent at 90 degrees toward the second mounting cavity to form a horizontal liquid outlet pipe II 32b. The liquid outlet pipe II 32b is also parallel to the width direction of the cabinet 1 and connects to the liquid inlet end of the coolant tank 6 in the second mounting cavity 1b. This cycle ensures efficient flow of coolant within the system and maintains stable battery cell temperature. The first branch pipe 331 and the second branch pipe 332 are respectively arranged on the liquid inlet pipe I 31a and the liquid outlet pipe 32a. Specifically, the inlet pipe I 31a and outlet pipe I 32a include alternating straight pipes 34 and three-way valves 35. The three-way valves 35 have a T-shaped structure, with a first branch pipe 331 and a second branch pipe 332 mounted on them. Each three-way valve 35 is equipped with an independent switch to control the opening and closing of the corresponding first branch pipe 331 or second branch pipe 332, thereby achieving independent control of the cooling system of a single energy storage module 2. Furthermore, this design considers the circulation efficiency of the coolant, optimizing the pipe layout and reducing fluid resistance to ensure efficient and stable cooling. This design allows the entire cooling system to flexibly adapt to different arrangements of energy storage modules while maintaining high-efficiency cooling performance.

[0046] To further improve cooling efficiency, regulating valves 39 for adjusting flow rate are provided on the inlet pipe II 31b and the outlet pipe II 32b. The regulating valves 39 can adjust the flow rate of coolant according to cooling requirements to ensure the best cooling effect under different working conditions, while also facilitating maintenance.

[0047] In this application, the quick connector 4 is a right-angle quick connector. Specifically, the quick connector 4 includes an L-shaped right-angle connector 41. A female connector 42 is fixed to the head 411 of the right-angle connector 41. The female connector 42 is cylindrical and is fixed to the head of the right-angle connector 41 by a snap fastener. The end of the female connector 42 has a mating hole 420 for mating with the liquid inlet and outlet interfaces. A slot 421 communicating with the mating hole 420 is formed on the side wall of the female connector 42. The axis of the slot 421 is perpendicular to the axis of the mating hole 420. A U-shaped latch 43 is inserted into the slot 421. The inner wall of the latch 43 has a protrusion to form a locking part 433. The cross-section of the locking part 433 is triangular, which facilitates locking into the slot on the interface to achieve locking and fixation, thereby improving the reliability and security of the connection. The latch 43 is a U-shaped structure, including a body. Both ends of the body extend to the same side to form a locking tongue 431. The quick connector has a first latch 4310 on one side and a first buckle 422 on the side wall of the slot 421. When the latch 43 is inserted to the inner limit position, the first buckle 422 engages with the first latch 4310 and locks the quick connector. At this time, the quick connector is locked and fixed on the interface and cannot be pulled out. Therefore, a toggle part 432 is provided at both ends of the latch 43 to toggle the ends of the latch 43 outward to disengage the first buckle from the first latch and unlock it. After unlocking, the quick connector can be easily pulled out of the interface, facilitating the inspection and maintenance of the cooling system. At the same time, a limiting groove is provided on the outer wall of the latch 43 and a limiting protrusion is provided on the inner wall of the slot 421. The limiting protrusion is located in the limiting groove and can limit the movement of the latch 43, so that the latch 43 is always on the female connector, forming a whole and preventing it from falling off. In the overall design of the cooling system, the application of this quick connector greatly improves the convenience of daily maintenance.

[0048] To improve the sealing performance of the first mounting cavity, a hole is provided on the vertical partition 11 for the inlet pipe II 31b and the outlet pipe II 32b to pass through. A sealing element 5 is provided between the hole and the inlet pipe II 31b and the outlet pipe II 32b to block the connection between the first mounting cavity and the second mounting cavity. Specifically, the sealing element 5 includes a fixing seat 51 that is fitted onto the vertical partition 11 and fixed with screws. The fixing seat is generally elliptical. A sealing ring 53 is provided between the contact surface of the fixing seat 51 and the vertical partition 11 to achieve elastic contact and sealing. The fixing seat 51 is provided with a pipeline interface. The two ends of the pipeline interface extend into the first mounting cavity 1a and the second mounting cavity 1b respectively, serving as a transfer interface. It includes a first interface 54 and a second interface 55, which are used to connect to the pipelines in the first mounting cavity and the second mounting cavity respectively. They are quickly connected through a quick interface to facilitate the rapid assembly and disassembly of the cooling system, reduce maintenance difficulty, and improve work efficiency.

[0049] In this application, a support frame with an open front end is provided in the first mounting cavity 1a, which serves as the mounting support structure for the energy storage module. An mounting area for mounting the energy storage module 2 is formed within the support frame. The liquid inlet pipe 31 and the liquid outlet pipe 32 are located at the front end of the support frame and outside the mounting area, so as not to affect the loading and unloading of the energy storage module and to avoid damage to the pipeline.

[0050] This utility model relates to a liquid cooling device for energy storage cabinets. The optimized design of the cooling pipe structure improves the device's reliability and ease of maintenance while ensuring effective cooling. Furthermore, the optimized design significantly enhances the space utilization of the energy storage cabinet, enabling future system upgrades and functional expansions. During the installation and removal of energy storage modules, this structure effectively prevents damage to the cooling pipes, extending the equipment's service life. This utility model's liquid cooling device for energy storage cabinets features a compact structure, reasonable layout, convenient installation and removal, high cooling efficiency, good reliability, easy and labor-saving maintenance, and a long service life.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A liquid cooling device for an energy storage cabinet, characterized in that: The device includes a cabinet with a first and a second mounting cavity formed inside the cabinet. The second mounting cavity contains a coolant tank, and the first mounting cavity contains an energy storage module and cooling pipes. The energy storage modules are multiple and equidistantly arranged vertically. Each energy storage module has an inlet and an outlet port on its front sides. The cooling pipes include an inlet pipe and an outlet pipe on both sides of the open end of the first mounting cavity. The inlet pipe and the outlet pipe are respectively provided with a first branch pipe and a second branch pipe corresponding to the energy storage module. The first and second branch pipes are flexible pipes and are connected to the inlet port and the outlet port respectively via quick connectors. The upper ends of the inlet pipe and the outlet pipe extend into the second mounting cavity and connect to the coolant tank to form a circulation pipeline.

2. The liquid cooling device for the energy storage cabinet as described in claim 1, characterized in that: The inlet pipe includes a vertically arranged inlet pipe I, the upper end of which is bent toward the second mounting cavity to form a horizontal inlet pipe II. The inlet pipe II extends into the second mounting cavity and connects to the outlet end of the coolant tank. The outlet pipe includes a vertically arranged outlet pipe I, the upper end of which is bent toward the second mounting cavity to form a horizontal outlet pipe II. The outlet pipe II extends into the second mounting cavity and connects to the inlet end of the coolant tank. The first branch pipe and the second branch pipe are respectively arranged on the inlet pipe I and the outlet pipe I.

3. The liquid cooling device for the energy storage cabinet as described in claim 2, characterized in that: The inlet pipe II and / or the outlet pipe II are equipped with regulating valves for adjusting the flow rate.

4. The liquid cooling device for the energy storage cabinet as described in claim 2, characterized in that: The inlet pipe I and the outlet pipe I include alternating straight pipes and three-way valves, with the first branch pipe and the second branch pipe mounted on the three-way valve.

5. The liquid cooling device for the energy storage cabinet as described in claim 1, characterized in that: The liquid inlet and the liquid outlet are vertically upward, and the quick connector is a right-angle quick connector.

6. The liquid cooling device for the energy storage cabinet as described in claim 2, characterized in that: The cabinet is equipped with a vertical partition, which divides the cabinet into a first installation cavity and a second installation cavity. The vertical partition has holes for the liquid inlet pipe II and the liquid outlet pipe II to pass through, and a sealing element is provided between the holes and the liquid inlet pipe II and the liquid outlet pipe II.

7. The liquid cooling device for the energy storage cabinet as described in claim 6, characterized in that: The sealing element includes a fixing seat that is fitted onto the vertical partition and fixed with screws. A sealing ring is provided between the contact surface of the fixing seat and the vertical partition. The fixing seat is provided with a pipeline interface. The two ends of the pipeline interface extend into the first mounting cavity and the second mounting cavity respectively and serve as transfer interfaces.

8. The liquid cooling device for the energy storage cabinet as described in claim 1, characterized in that: The first branch pipe and the second branch pipe are L-shaped.

9. The liquid cooling device for the energy storage cabinet as described in claim 1, characterized in that: The first mounting cavity is provided with a support frame with an open front end. An installation area for installing the energy storage module is formed within the support frame. The liquid inlet pipe and the liquid outlet pipe are located at the front end of the support frame and outside the installation area.

10. The liquid cooling device for the energy storage cabinet as described in claim 1, characterized in that: The first branch pipe and the second branch pipe are set horizontally.

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