Liquid cooling energy storage cabinet with efficient heat dissipation

Abstract

The utility model relates to an efficient heat dissipation liquid cooling energy storage cabinet which comprises a vertical single cabinet body and a cabinet door, a partition plate divides the vertical single cabinet body into an upper battery cabin and a lower combined cabin, the partition plate is fixed on a cabinet body support arranged in the vertical single cabinet body, and a liquid cooling machine and a PCS are arranged on the upper portion and the lower portion in the combined cabin. The cabinet door is provided with an air inlet shutter corresponding to the combined cabin, the rear side of the vertical single cabinet body is provided with a detachable air outlet assembly corresponding to the combined cabin, and the liquid cooling machine and the PCS are provided with mutually independent heat dissipation channels. According to the utility model, the liquid cooling machine and the PCS are installed in the combined cabin at the lower layer of the cabinet body in a centralized manner, so that the installation and maintenance of the liquid cooling machine and the PCS are facilitated, the synchronous heat dissipation of the liquid cooling machine and the PCS can be realized, the liquid cooling machine and the PCS share one air inlet and one air outlet, but are provided with mutually independent heat dissipation channels, and the exhaust air flow of the liquid cooling machine and the PCS is restrained in the respective heat dissipation channels for heat dissipation, thereby improving the heat dissipation efficiency of the liquid cooling machine and the PCS. And the heat dissipation effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid-cooled energy storage equipment, specifically to a liquid-cooled energy storage cabinet with high-efficiency heat dissipation. Background Technology

[0002] Existing liquid-cooled energy storage cabinets mostly adopt a left-right structure, where batteries and other components are placed on the left and right sides respectively. This method is simple in structure but occupies a large area. Furthermore, to ensure battery protection, existing liquid-cooled PACKs often employ high protection levels, resulting in higher unit structural costs and fire safety costs. A high-energy-density IP67-protected liquid-cooled energy storage cabinet (patent number 202410811795.8) utilizes a top cover to install a chiller and divides the internal space of the cabinet 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 balancing ease of maintenance, increasing the cabinet's energy density and reducing land use costs. However, this structure has the following drawbacks: the chiller and electrical compartment are located on the upper and lower sides of the liquid-cooled PACK compartment, requiring separate air inlets and outlets for cooling the chiller and electrical compartment. Additionally, placing the chiller on top hinders future maintenance. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-efficiency heat dissipation liquid-cooled energy storage cabinet. The liquid chiller and PCS are centrally installed in the combined compartment of the lower layer of the cabinet, which facilitates the installation and maintenance of the liquid chiller and PCS. At the same time, it can realize the synchronous heat dissipation of the liquid chiller and PCS. The liquid chiller and PCS share a common air inlet and outlet, but have independent heat dissipation channels. The exhaust airflow of the liquid chiller and PCS is constrained within their respective heat dissipation channels, resulting in good heat dissipation effect and preventing the exhaust airflow of the liquid chiller and PCS from interfering with each other and causing backflow, which would affect heat dissipation and cause the liquid chiller and PCS to overheat and shut down.

[0004] The purpose of this utility model is achieved as follows:

[0005] A high-efficiency heat dissipation liquid-cooled energy storage cabinet includes a vertical single cabinet and a cabinet door. A partition divides the vertical single cabinet into an upper battery compartment and a lower combined compartment. The partition is fixed to a cabinet support built into the vertical single cabinet. A liquid cooler and a PCS are arranged vertically and vertically in the combined compartment. The cabinet door is provided with an air inlet louver corresponding to the combined compartment. A detachable air outlet assembly is provided on the rear side of the vertical single cabinet corresponding to the combined compartment. The liquid cooler and the PCS have independent heat dissipation channels.

[0006] Preferably, the PCS is built into a front-to-back through-flow 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. The air outlet assembly includes an air outlet plate, air outlet louvers, an isolation sleeve, and PCS fans. The air outlet plate is fixed to the rear side of the vertical single cabinet. The air outlet plate 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 plate is provided with multiple PCS fans corresponding to the PCS.

[0007] Preferably, multiple PCS fans are horizontally evenly distributed, and the PCS fans extend into the air duct.

[0008] Preferably, the built-in fan of the liquid chiller and the PCS fan at the air duct outlet operate to draw air into the liquid chiller and the PCS in the air duct through the air inlet louvers for heat exchange. After heat exchange, the air passes through the isolation sleeve and the air duct to reach the air outlet plate, and is discharged through the air outlet louvers and the PCS fan, respectively.

[0009] Preferably, the front bracket includes a front and rear mounting beam and a left and right symmetrical support plate. The mounting beam is fixed to the outer top surface of the air duct and connected to the cabinet support. The support plate is symmetrically arranged on the mounting beam, and the rear of the liquid cooler extends out of the support plate.

[0010] Preferably, a water baffle is provided below the liquid injection port of the liquid cooler, and the water baffle is fixed on the cabinet support.

[0011] The beneficial effects of this utility model are:

[0012] This utility model integrates the liquid chiller and PCS in a combined compartment at the bottom of the cabinet, facilitating their installation and maintenance. It also enables simultaneous heat dissipation for both the liquid chiller and PCS. While sharing a single air inlet and outlet, the liquid chiller and PCS have independent heat dissipation channels, confining their exhaust airflow within their respective channels for efficient cooling. This prevents backflow caused by interference between the exhaust airflows, which could hinder heat dissipation and lead to overheating and shutdown of the liquid chiller and PCS. Verification has shown that the temperature rise at the PCS inlet of the existing energy storage cabinet can be controlled within 2°C, and the temperature rise inside the PCS cavity can be controlled within 5°C, making it suitable for various complex operating conditions. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a high-efficiency heat dissipation liquid-cooled energy storage cabinet according to the present invention.

[0014] Figure 2 for Figure 1 A schematic diagram of the assembly structure.

[0015] Figure 3 for Figure 2Rear view.

[0016] Figure 4 This is a schematic diagram of the assembly structure of the combined compartment.

[0017] Figure 5 This is a schematic diagram of the bottom structure of the cabinet support.

[0018] in:

[0019] 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

[0020] See Figure 1-5 This utility model relates to a high-efficiency heat dissipation 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.

[0021] 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.

[0022] 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.

[0023] 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 setting up a rain shelter 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 outside of the PCS is wrapped with the air duct, 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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 high-efficiency heat dissipation liquid-cooled energy storage cabinet, characterized in that: The unit includes a vertical single cabinet and a cabinet door. A partition divides the vertical single cabinet into an upper battery compartment and a lower combined compartment. The partition is fixed to the cabinet support built into the vertical single cabinet. The combined compartment is equipped with a liquid cooler and a PCS at the top and bottom. The cabinet door is equipped with an air inlet louver corresponding to the combined compartment. The rear side of the vertical single cabinet is equipped with a detachable air outlet assembly corresponding to the combined compartment. The liquid cooler and the PCS have independent heat dissipation channels.

2. The liquid-cooled energy storage cabinet with high-efficiency heat dissipation according to claim 1, 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. The air outlet assembly includes an air outlet plate, air outlet louvers, an isolation sleeve, and PCS fans. The air outlet plate is fixed to the rear side of the vertical single cabinet. The air outlet plate 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 plate is provided with multiple PCS fans corresponding to the PCS.

3. The liquid-cooled energy storage cabinet with high-efficiency heat dissipation according to claim 2, characterized in that: Multiple PCS fans are evenly distributed horizontally, and the PCS fans extend into the air duct.

4. The liquid-cooled energy storage cabinet with high-efficiency heat dissipation according to claim 3, characterized in that: The built-in fan of the liquid chiller and the PCS fan at the air duct outlet operate, drawing air from the air inlet louvers into the liquid chiller and the PCS in the air duct for heat exchange. After heat exchange, the air passes through the isolation sleeve and the air duct to reach the air outlet plate, and is then discharged through the air outlet louvers and the PCS fan, respectively.

5. The liquid-cooled energy storage cabinet with high-efficiency heat dissipation according to claim 2, characterized in that: The front bracket includes front and rear mounting beams and symmetrically arranged support plates. The mounting beams are fixed to the outer top surface of the air duct and connected to the cabinet support. The support plates are symmetrically arranged on the mounting beams, and the rear of the liquid cooler extends out of the support plates.

6. The liquid-cooled energy storage cabinet with high-efficiency heat dissipation according to claim 1, characterized in that: A water baffle is provided below the liquid injection port of the liquid chiller, and the water baffle is fixed on the cabinet support.

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