Liquid-cooling energy storage cabinet capable of preventing liquid leakage

Abstract

The utility model relates to an anti-leakage liquid cooling energy storage cabinet, comprising a vertical single cabinet body and a cabinet door, the front side of the vertical single cabinet body is hinged with the cabinet door, the vertical single cabinet body is internally provided with a separator plate, the separator plate divides the vertical single cabinet body into an upper battery compartment and a lower combined compartment, the battery compartment is longitudinally provided with a plurality of liquid cooling PACKs, and the liquid cooling PACKs are connected with the cabinet door. A liquid cooling machine and a PCS are arranged on the upper portion and the lower portion in the combined cabin, the liquid cooling PACK in the battery cabin retracts backwards to reserve a space for the front side of the partition plate, the liquid cooling machine and the PCS are flush with the front side of the liquid cooling PACK 6 in the battery cabin, a plurality of up-down through holes are formed in the portion, exceeding the liquid cooling PACK, of the partition plate, and baffle rings higher than the partition plate are arranged outside the up-down through holes. According to the utility model, the cabinet body is subjected to multiple liquid leakage prevention design, a plurality of up-down through holes of the battery compartment partition plate are used for pipeline access, and the holes are sealed by using sealant after the pipelines are installed; the periphery of the through hole is provided with an annular baffle higher than the partition plate, and the liquid cooling PACK in the battery compartment retracts backwards to the rear side of the through hole of the partition plate, so that liquid leakage of the PACK and condensate water are prevented from dropping into the through hole and entering the electrical compartment.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid-cooled energy storage equipment, specifically to a leak-proof liquid-cooled energy storage cabinet. Background Technology

[0002] In the energy storage field, energy storage applications in industrial and commercial settings are becoming increasingly common. Compared to containerized energy storage systems, smaller and more flexible energy storage cabinets are widely used. Liquid-cooled energy storage cabinets are particularly favored by owners in industrial and commercial applications due to their smaller footprint.

[0003] A high-energy-density IP67-protected liquid-cooled energy storage cabinet, patent number 202410811795.8, utilizes a top cover to house a chiller and divides the internal space into a liquid-cooled PACK compartment and an electrical compartment, arranging batteries and components in three sections (upper, middle, and lower). This design effectively utilizes the vertical space of the cabinet while ensuring ease of maintenance, increasing energy density and reducing land use costs. However, this structure has the following drawbacks: it lacks corresponding drainage and short-circuit protection designs to address leakage and condensation buildup in internal components such as liquid-cooled pipes, liquid-cooled battery packs, or liquid-cooled units. Leakage can cause irreparable damage to the energy storage cabinet. Even with leakage prevention designs, the effectiveness is not ideal, and leaks can easily lead to short circuits. Therefore, there is an urgent need to design a leak-proof liquid-cooled energy storage cabinet. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a leak-proof liquid-cooled energy storage cabinet. The cabinet body features multiple leak-proof designs. Multiple vertical through-holes in the battery compartment partition allow for pipeline entry and exit; after pipeline installation, the holes are sealed with sealant. A ring-shaped baffle higher than the partition surrounds the through-holes, and the liquid-cooled PACK inside the battery compartment is recessed to the rear of the partition's through-holes to prevent leakage from the PACK and condensate from dripping into the electrical compartment. A drain hole on the rear side of the partition leads directly to the outside of the cabinet, allowing leakage and condensate to drain directly, preventing liquid accumulation in the battery compartment. The combined compartment... The liquid cooler, PCS, and liquid cooling PACK in the battery compartment are flush with each other at the front. This way, the liquid cooler, PCS, and liquid cooling PACK are recessed a certain distance along the partition. If the battery compartment leaks, the partition, together with the baffle ring, will block the leakage, and the leakage will only spread forward and downward along the partition. The liquid cooler and PCS recessed in the combined compartment will not be affected by the leakage. The liquid cooler and PCS are stacked in the combined compartment, with the liquid cooler on top and the PCS on the bottom. The outside of the PCS is wrapped with an air duct, and the front end of the air duct extends out to prevent liquid leakage from the liquid cooler side from dripping onto the PCS and causing a short circuit in the PCS.

[0005] The purpose of this utility model is achieved as follows:

[0006] A leak-proof liquid-cooled energy storage cabinet includes a vertical single cabinet and a cabinet door. The cabinet door is hinged to the front of the vertical single cabinet. The vertical single cabinet is equipped with a partition that divides the vertical single cabinet into an upper battery compartment and a lower combined compartment. The battery compartment has multiple liquid-cooled PACKs arranged longitudinally. The combined compartment has a liquid cooler and a PCS arranged vertically. The liquid-cooled PACKs in the battery compartment are recessed to provide space in front of the partition. The liquid cooler and PCS are flush with the front of the liquid-cooled PACKs in the battery compartment. The partition has multiple vertical through holes extending beyond the liquid-cooled PACKs. A retaining ring higher than the partition is provided outside the vertical through holes.

[0007] Preferably, the cabinet door is equipped with an air inlet louver corresponding to the combined compartment, and the rear side of the vertical single cabinet is equipped with a detachable air outlet assembly corresponding to the combined compartment. The cabinet door is equipped with a dehumidifier and a power distribution box at the corresponding position in the battery compartment.

[0008] Preferably, the PCS is built into a front-to-back air duct, the air duct is fixed on the cabinet support, the liquid chiller is fixed above the air duct by a front bracket, and the tail of the liquid chiller is suspended above the air duct.

[0009] Preferably, the air outlet assembly includes an air outlet panel, air outlet louvers, an isolation sleeve, and PCS fans. The air outlet panel is fixed to the rear side of the vertical single cabinet. The air outlet panel is provided with air outlet louvers corresponding to the liquid chiller. An isolation sleeve is provided inside the air outlet louvers. The isolation sleeve is fitted onto the rear of the liquid chiller. The air outlet panel is provided with multiple PCS fans corresponding to the PCS.

[0010] Preferably, a water baffle is provided below the liquid injection port of the liquid cooler. The water baffle is fixed on the cabinet support and is equivalent to setting up a rain shelter at the top of the air duct.

[0011] Preferably, the liquid cooler extends into the battery compartment and connects to each liquid-cooled PACK through liquid-cooled inlet pipe and liquid-cooled outlet pipe. The liquid-cooled inlet pipe and liquid-cooled outlet pipe are symmetrically arranged on the left and right sides of the cabinet support. The liquid-cooled inlet pipe and liquid-cooled outlet pipe enter the battery compartment through the upper and lower through holes on the front side of the partition.

[0012] The beneficial effects of this utility model are:

[0013] The cabinet features multiple leak-proof designs. The battery compartment partition has several through holes at the top and bottom for pipeline entry and exit. After the pipelines are installed, the holes are sealed with sealant. The through holes are surrounded by rings that are higher than the partition. The liquid-cooled PACK inside the battery compartment is recessed to the rear of the through holes in the partition to prevent leakage from the PACK and condensation from dripping into the electrical compartment. The drain hole on the rear of the partition leads directly to the outside of the cabinet, allowing leakage and condensation to drain directly and preventing liquid accumulation in the battery compartment.

[0014] The liquid cooler and PCS in the combined compartment are flush with the front of the liquid cooling PACK in the battery compartment. In this way, the liquid cooler, PCS and liquid cooling PACK are recessed a distance along the partition. If the battery compartment leaks liquid, the partition and the baffle ring will block it. The leak will only spread forward and downward along the partition. The liquid cooler and PCS recessed in the combined compartment will not be affected by the leak.

[0015] The liquid cooler and PCS are stacked in the combined compartment, with the liquid cooler on top and the PCS on the bottom. The PCS is wrapped with an air duct, and the front end of the air duct extends outward to prevent liquid leakage from the liquid cooler side from dripping onto the PCS and causing a short circuit in the PCS. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a leak-proof liquid-cooled energy storage cabinet according to the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the assembly structure.

[0018] Figure 3 for Figure 2 Rear view.

[0019] Figure 4 This is a schematic diagram of the assembly structure of the combined compartment.

[0020] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0021] Figure 6 This is a schematic diagram of the bottom structure of the cabinet support.

[0022] in:

[0023] 1. Vertical single cabinet; 1.1 Cabinet support; 1.2 Outer shell; 1.3 Air duct; 1.4 Front bracket; 1.4.1 Mounting beam; 1.4.2 Support plate; 1.5 Water baffle; 2. Cabinet door; 2.1 Air inlet louver; 3. Partition; 3.1 Upper and lower through hole; 4. Battery compartment; 5. Combination compartment; 6. Liquid cooling PACK; 7. Liquid cooler; 8. PCS; 9. Air outlet assembly; 9.1 Air outlet plate; 9.2 Air outlet louver; 9.3 Isolation sleeve; 9.4 PCS fan; 10. Liquid cooling inlet pipe; 11. Liquid cooling outlet pipe; 12. Baffle ring; 13. Dehumidifier; 14. Distribution box; 15. Fire hose; 16. Fire sprinkler head; 17. Temperature detector; 18. Smoke detector; 19. Water immersion sensor. Detailed Implementation

[0024] See Figure 1-6This utility model relates to a leak-proof liquid-cooled energy storage cabinet, including a vertical single cabinet body 1 and a cabinet door 2. The cabinet door 2 is hinged to the front side of the vertical single cabinet body 1. The vertical single cabinet body 1 is provided with a partition 3, which divides the vertical single cabinet body 1 into an upper battery compartment 4 and a lower combined compartment 5. The vertical single cabinet body 1 includes a cabinet support 1.1 and an outer shell 1.2. The partition 3 is fixed on the cabinet support 1.1. The outer shell 1.2 is assembled from multiple metal plates. The front side of the outer shell 1.2 is open. The multiple metal plates are respectively fixedly installed on the left and right sides, upper and lower sides and the rear surface of the cabinet support 1.1. The partition 3 is welded to the left and right sides and the rear side metal plates of the outer shell 1.2 to achieve mutual isolation between the battery compartment 4 and the combined compartment 5.

[0025] The battery compartment 4 has multiple liquid-cooled PACKs 6 arranged longitudinally. The side walls of the cabinet support 1.1 are equipped with battery trays to support the liquid-cooled PACKs. The combined compartment 5 has liquid coolers 7 and PCS8 arranged vertically. The liquid coolers 7 and PCS8 have independent heat dissipation channels. The PCS8 is housed within a through-flow air duct 1.3, which is fixed to the cabinet support 1.1. The liquid coolers 7 are positioned above the air duct 1.3. The cabinet support 1.1 is positioned corresponding to the liquid coolers 7. A front bracket 1.4 is provided to support the liquid chiller 7. The front bracket 1.4 is fixed to the front side of the cabinet support 1.1. The front bracket 1.4 includes a front and rear mounting beam 1.4.1 and a left and right symmetrical support plate 1.4.2. The mounting beam 1.4.1 is fixed to the outer top surface of the air duct 1.3 and connected to the cabinet support 1.1. The support plate 1.4.2 is symmetrically arranged on the mounting beam 1.4.1. In this way, a gap is left between the liquid chiller 7 and the air duct 1.3, so that the tail of the liquid chiller 7 is suspended on the air duct 1.3.

[0026] The cabinet door 2 is equipped with an air inlet louver 2.1 corresponding to the combined compartment 4. A detachable air outlet assembly 9 is provided on the rear side of the vertical single cabinet 1 corresponding to the combined compartment 4. The air outlet assembly 9 includes an air outlet plate 9.1, an air outlet louver 9.2, an isolation sleeve 9.3, and a PCS fan 9.4. The air outlet plate 9.1 is fixed to the rear side of the vertical single cabinet 1 with bolts. The air outlet plate 9.1 is equipped with an air outlet louver 9.2 corresponding to the liquid cooler 7. An isolation sleeve 9.3 is provided inside the air outlet louver 9.2. An isolation sleeve 9.3 is fitted onto the rear of the liquid chiller 7. Multiple PCS fans 9.4 are mounted on the exhaust plate 9.1 corresponding to the PCS8. These PCS fans 9.4 are horizontally distributed and extend into the air duct 1.3. Simulation calculations and experimental verification show that embedding multiple PCS fans within the outer air duct of the PCS and horizontally arranging them 150mm from the rear of the PCS, with a fan airflow 1.5 times that of the PCS heat dissipation flow, achieves a balance between heat dissipation and minimal energy consumption. The fans built into the liquid chiller 7 and the PCS fans 9.4 at the outlet of air duct 1.3 draw air from the inlet louvers 2.1 into the liquid chiller 7 and the PCS8 within the air duct 1.2 for heat exchange. After heat exchange, the air passes through the isolation sleeve 9.3 and air duct 1.3 to the exhaust plate 9.1, and is then discharged through the exhaust louvers 9.2 and PCS fans 9.4. In this way, the liquid chiller 7 and PCS8 share a common air inlet, while the exhaust airflow of the liquid chiller and PCS is confined within their respective heat dissipation ducts. This prevents the exhaust airflow of the liquid chiller 7 and PCS8 from interfering with each other and causing backflow, which would affect heat dissipation and cause the liquid chiller 7 and PCS8 to overheat and shut down.

[0027] To prevent leakage during liquid filling of the liquid chiller 7, a water-retaining edge 1.5 is installed below the liquid filling port of the liquid chiller 7. The water-retaining edge 1.5 is fixed to the cabinet support 1.1. The water-retaining edge 1.5 is equivalent to a rain shelter set at the top of the air duct 1.3, protecting the PCS inside the air duct. In this way, the liquid chiller and PCS are stacked in the combined compartment, with the liquid chiller on top and the PCS below. The air duct is used to wrap the outside of the PCS, and the water-retaining edge extends from the front end of the air duct to prevent liquid leakage from the liquid chiller side from dripping onto the PCS and causing a short circuit in the PCS.

[0028] The liquid cooler 7 extends into the battery compartment 4 via liquid cooling inlet pipe 10 and liquid cooling outlet pipe 11, connecting to each liquid cooling PACK 6. The liquid cooling inlet pipe 10 and liquid cooling outlet pipe 11 are symmetrically arranged on the left and right sides of the cabinet support 1.1, which is reasonable and makes full use of the cabinet space. The front of the partition 3 extends beyond the liquid cooling PACK 6, and the part of the partition extending beyond the liquid cooling PACK 6 is provided with multiple vertical through holes 3.1. The vertical through holes 3.1 are used for pipeline entry and exit. After the pipeline is installed, the holes are sealed with sealant. The perimeter of the vertical through holes is provided with retaining rings higher than the partition, and the liquid cooling PACK in the battery compartment is recessed to the rear side of the vertical through holes of the partition to prevent leakage of PACK and condensation from dripping into the through holes and entering the electrical compartment. The drain hole on the rear side of the partition leads directly to the outside of the cabinet, so that leakage and condensation can be discharged directly to prevent liquid accumulation in the battery compartment.

[0029] Because the front of the partition 3 extends beyond the liquid-cooled PACK 6, space is reserved on the front of the battery compartment 4. The cabinet door 2 is equipped with a dehumidifier 13 and a power distribution box 14 at the corresponding positions in the battery compartment 4, making the layout of the liquid-cooled energy storage cabinet more rational. The power distribution box 14 houses electrical components such as fuses, circuit breakers, and intermediate relays. The box body of the power distribution box 14 is embedded in the cabinet door, and the cover is closed after the electrical components are installed. The dehumidifier 13 periodically dehumidifies the battery compartment to prevent moisture generation. The water generated by the dehumidifier is discharged outside the cabinet through a drain pipe. The drain pipe enters the lower combined compartment 5 through the upper and lower through holes 3.1 on the partition 3, and then discharges outside the cabinet through the drain outlet at the bottom of the cabinet.

[0030] The liquid cooler 7 and PCS8 in the combined compartment 5 are flush with the front of the liquid cooler PACK6 in the battery compartment 4. In this way, the liquid cooler, PCS and liquid cooler PACK are recessed a distance along the partition. If the battery compartment leaks liquid, the liquid will only spread forward and downward along the partition due to the blocking effect of the partition. The liquid cooler and PCS recessed in the combined compartment will not be affected by the liquid leakage.

[0031] The vertical single cabinet 1 is also equipped with a fire protection system, which includes a fire pipe 15. The fire pipe 15 enters the cabinet from the outside and extends along one side of the cabinet support 1.1 from the combined compartment 5 to the top center of the battery compartment 4. The outlet of the fire pipe 15 is connected to a fire sprinkler head 16. At the same time, the top of the cabinet door 2 is equipped with fire detectors, including a heat detector 17 and a smoke detector 18, which provide all-round real-time monitoring of the battery compartment 4, precise fire protection, and precise fire protection in case of battery thermal runaway, thereby reducing the scope of fire accidents.

[0032] The bottom of the vertical single cabinet 1 is equipped with a water immersion sensor 19, which provides a highly reliable working environment for the batteries of the liquid-cooled energy storage cabinet. While effectively improving the integration of the liquid-cooled energy storage cabinet, it reduces the protection level requirements for individual battery cells, thereby maximizing the cost reduction and efficiency improvement of the product.

[0033] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A leak-proof liquid-cooled energy storage cabinet, characterized in that: The device includes a vertical single cabinet and a cabinet door. The cabinet door is hinged to the front of the vertical single cabinet. The vertical single cabinet is equipped with a partition that divides the vertical single cabinet into an upper battery compartment and a lower combination compartment. The battery compartment has multiple liquid-cooled PACKs arranged longitudinally. The combination compartment has a liquid cooler and a PCS arranged vertically. The liquid-cooled PACKs in the battery compartment are recessed to provide space in front of the partition. The liquid cooler, PCS and the front of the liquid-cooled PACK 6 in the battery compartment are flush. The partition has multiple vertical through holes extending beyond the liquid-cooled PACKs. There are retaining rings outside the vertical through holes that are higher than the partition.

2. The liquid-cooled energy storage cabinet with leak-proof design according to claim 1, characterized in that: The cabinet door is equipped with an air inlet louver corresponding to the combined compartment, and the rear side of the vertical single cabinet is equipped with a detachable air outlet assembly corresponding to the combined compartment. The cabinet door is equipped with a dehumidifier and a power distribution box at the corresponding position in the battery compartment.

3. The liquid-cooled energy storage cabinet with leak-proof design according to claim 2, characterized in that: The PCS is built into a front-to-back air duct, which is fixed to the cabinet support. The liquid chiller is fixed above the air duct by a front bracket, and the rear of the liquid chiller is suspended above the air duct.

4. The leak-proof liquid-cooled energy storage cabinet according to claim 2, characterized in that: The air outlet assembly includes an air outlet panel, air outlet louvers, an isolation sleeve, and PCS fans. The air outlet panel is fixed to the rear side of the vertical single cabinet. The air outlet panel is provided with air outlet louvers corresponding to the liquid chiller. An isolation sleeve is provided inside the air outlet louvers. The isolation sleeve is fitted onto the rear of the liquid chiller. The air outlet panel is provided with multiple PCS fans corresponding to the PCS.

5. A leak-proof liquid-cooled energy storage cabinet according to claim 1, characterized in that: A water baffle is provided below the liquid injection port of the liquid chiller. The water baffle is fixed on the cabinet support and is equivalent to setting up a rain shelter on the top of the air duct.

6. The leak-proof liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid cooler extends into the battery compartment and connects to each liquid-cooled PACK through liquid-cooled inlet and liquid-cooled outlet pipes. The liquid-cooled inlet and liquid-cooled outlet pipes are symmetrically arranged on the left and right sides of the cabinet support. The liquid-cooled inlet and liquid-cooled outlet pipes enter the battery compartment through the upper and lower through holes on the front side of the partition.

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