A low-energy water-cooling radiator for large cabinets

Abstract

The present application relates to the field of cabinet heat dissipation technology and discloses a low-energy water-cooled radiator for large cabinets, comprising: a cabinet, which serves as a basic component for supporting and connecting lower structures; a radiator, which is installed inside the cabinet for heat dissipation of the cabinet; a low-resistance connection structure, which connects the cabinet and the radiator; an integrated heat dissipation structure, which is fitted and installed on the heating surface of the cabinet; a composite circulation pipeline, which includes a liquid inlet pipe, a liquid outlet pipe and a multi-stage diverter, wherein the multi-stage diverter is connected to an external coolant supply system; and an adaptive flow control valve, which dynamically adjusts the coolant flow rate according to the temperature inside the cabinet. The beneficial effects of the present invention are as follows: when the coolant flows through, the gradually expanding cross-section of the main channel layer accelerates fluid diffusion and reduces the boundary layer thermal resistance. At the same time, the guide vanes and spiral spoiler fins cooperate to enable the coolant to better contact with the nano-hydrophilic coating. The nano-hydrophilic coating reduces the contact angle of the droplets, allowing the coolant to form an ultra-thin liquid film on the channel wall, accelerating the release of latent heat of vaporization.

Description

Technical Field

[0001] The present invention relates to the technical field of cabinet heat dissipation, and in particular to a low-energy consumption water-cooling radiator for a large cabinet. Background Art

[0002] With the rapid development of data centers, high-performance computing, and other fields, the integration and power density of electronic components in large cabinets are constantly increasing. Traditional air cooling can no longer meet these cooling needs. Water cooling radiators have gradually become the mainstream choice due to their efficient heat dissipation performance. However, existing large cabinet water cooling radiators still have many technical bottlenecks:

[0003] On the one hand, in terms of heat dissipation efficiency, the heat dissipation structure design of traditional water-cooled radiators is relatively crude. Ordinary water-cooling channels often adopt a regular straight cylindrical or rectangular design. The coolant flow pattern within the channel is simple, easily forming a laminar state, resulting in a large boundary layer thermal resistance, making it difficult to quickly remove heat from the heating element. Furthermore, the contact between the channel and the heating surface is not close enough, resulting in low heat conduction efficiency, causing the core components in the cabinet to remain overheated, seriously affecting the stability and service life of the equipment.

[0004] On the other hand, energy consumption is a significant issue. Most existing water cooling systems utilize a fixed coolant flow rate, which is unable to dynamically adjust to the cabinet's real-time heat load. Under low-load conditions, high flow rates are maintained, causing the water pump to continuously operate at high power, resulting in significant energy waste. Under high load conditions, insufficient flow may prevent timely heat dissipation, forcing the system to add additional cooling equipment, further increasing energy consumption.

[0005] Traditional water-cooled radiators are particularly deficient in terms of energy recovery. The high-temperature coolant discharged from the outlet pipe carries a large amount of waste heat directly into the environment without any recycling, resulting in significant energy waste. Furthermore, uneven heat dissipation in key areas like the battery pack can easily lead to localized overheating, posing a safety hazard. Summary of the Invention

[0006] In response to the deficiencies of the prior art, the present invention provides a low-energy water-cooled radiator for large cabinets, which solves the problem that a large amount of waste heat carried by the high-temperature coolant discharged from the liquid outlet pipe is directly discharged into the environment without any recycling.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A low-energy water-cooling radiator for a large cabinet, comprising:

[0008] Cabinet, which serves as the basic component and is used to carry and connect the lower structure;

[0009] A radiator is installed inside the cabinet to dissipate heat from the cabinet;

[0010] Integrated heat dissipation structure, which is installed on the heating surface of the cabinet;

[0011] A composite circulation pipeline comprising a liquid inlet pipe, a liquid outlet pipe and a multi-stage flow divider, wherein the multi-stage flow divider is connected to an external coolant supply system;

[0012] Adaptive flow control valve dynamically adjusts the coolant flow according to the internal temperature of the cabinet.

[0013] Preferably, the integrated heat dissipation structure includes a layered microchannel flow channel, and the layered microchannel flow channel is embedded in the integrated heat dissipation structure.

[0014] Preferably, spiral spoiler fins and guide vanes are installed inside the layered microchannel flow channel, and the guide vanes are arranged in a spiral shape inside the layered microchannel flow channel. The spiral spoiler fins and the nano-hydrophilic coating arranged inside the layered microchannel flow channel constitute a heat exchange enhancement structure.

[0015] Preferably, one end of the liquid inlet pipe is connected to a low-resistance connection structure, and a pressure self-balancing double-channel structure is provided inside the low-resistance connection structure. The double-channel structure includes a main channel and a bypass, and the bypass is provided with a flow limiter and an elastic airbag.

[0016] Preferably, the low-resistance connection structure adopts a magnetically controlled variable flow quick-connect joint, and a Hall sensor is provided inside the magnetically controlled variable flow quick-connect joint, and the Hall sensor is used to detect the flow rate in the magnetically controlled variable flow quick-connect joint.

[0017] Preferably, the outer wall of the liquid outlet pipe is provided with a waste heat recovery structure, and the waste heat recovery structure includes a thermoelectric conversion plate, which is fitted on the outside of the liquid outlet pipe, and the output end of the thermoelectric conversion plate is electrically connected to the fan power supply system of the cabinet.

[0018] Preferably, the radiator includes a main board, a cover plate, a composite plate and a battery pack water-cooling plate, and the main board and the cover plate are connected by welding.

[0019] Preferably, the adaptive flow control valve includes a temperature sensor, which is installed on one side of the outer wall of the cabinet. A dual-mode switching structure is installed on one side of the outer wall of the compound circulation pipeline, and the temperature sensor is electrically connected to the dual-mode switching structure.

[0020] Preferably, the dual-mode switching structure includes a damping ring, which is arranged inside the compound circulation pipeline. A pressure compensator is also provided inside the compound circulation pipeline.

[0021] The present invention provides a low-energy water-cooling radiator for large cabinets. It has the following beneficial effects:

[0022] 1. The present invention forms a high-efficiency heat exchange system by combining layered microchannel flow channels in an integrated heat dissipation structure with spiral spoiler fins and nano-hydrophilic coatings. When the coolant flows through, the gradually expanding cross-section of the main channel layer accelerates fluid diffusion and reduces the thermal resistance of the boundary layer; the fractal topology of the auxiliary channel layer guides the tributaries to penetrate the heat-intensive area, and the terminal turbulent cavity breaks the laminar flow state. The beveled flow guide in the circular flow channel generates a swirling vortex, which cooperates with the spiral spoiler fins to enhance the tumbling of the fluid. At the same time, the nano-hydrophilic coating reduces the contact angle of the droplets, so that the coolant forms an ultra-thin liquid film on the channel wall, accelerating the release of latent heat of vaporization.

[0023] 2. In this invention, the adaptive flow control valve combines a temperature sensor with a dual-mode switching structure to achieve intelligent dynamic adjustment of coolant flow. In steady-state mode, the damping ring remains unobstructed, and the pressure compensator absorbs minor pulsations, maintaining stable, low-speed coolant circulation and reducing pump energy consumption. In transient mode, when the local temperature rises sharply, the shape memory alloy skeleton of the damping ring contracts due to heat, the flow channel cross-sectional area decreases sharply, and the coolant flow rate doubles, creating an enhanced emergency heat dissipation effect.

[0024] 3. The waste heat recovery structure on the outer wall of the liquid outlet pipe of the present invention converts waste heat into electrical energy through thermoelectric conversion plates, drives the cabinet fan to increase the air intake, and forms a coolant pre-cooling energy-saving closed loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a water-cooled radiator for a cabinet according to the present invention;

[0026] Figure 2 This is a diagram showing a water-cooled radiator for a cabinet in the present invention;

[0027] Figure 3 A schematic diagram of a water-cooled radiator for a cabinet in the present invention;

[0028] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0029] Figure 5 An exploded view of the water-cooled radiator of the present invention;

[0030] Figure 6 Schematic diagram of the liquid inlet pipe in the present invention;

[0031] Figure 7 This is a diagram showing the liquid outlet pipe of the present invention;

[0032] Figure 8 is a schematic diagram of the adaptive flow control valve in the present invention;

[0033] Figure 9 A diagram showing the layered microchannel flow path of the present invention;

[0034] Figure 10 This is a diagram showing the integrated heat dissipation structure of the present invention;

[0035] Figure 11 for Figure 10 Enlarged view of point B in FIG.

[0036] Figure 12 This is a diagram showing the guide plate of the present invention.

[0037] Among them, 1. Cabinet; 2. Radiator; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Multi-stage diverter; 6. Adaptive flow control valve; 7. Layered microchannel flow channel; 8. Spiral spoiler fins; 9. Nano-hydrophilic coating; 10. Main line; 11. Bypass; 12. Flow limiter; 13. Elastic airbag; 14. Magnetically controlled variable flow quick connector; 15. Hall sensor; 16. Thermoelectric converter; 17. Main board; 18. Cover plate; 19. Composite board; 20. Battery pack water cooling plate; 21. Temperature sensor; 22. Dual-mode switching structure; 23. Damping ring; 24. Pressure compensator; 25. Guide vane. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Please see the attached Figure 1 -Attached Figure 12 The embodiment of the present invention provides a low-energy water-cooling radiator for a large cabinet, comprising:

[0040] Cabinet 1, which serves as a basic component for supporting and connecting lower structures;

[0041] The radiator 2 is installed inside the cabinet 1 and is used for heat dissipation of the cabinet;

[0042] An integrated heat dissipation structure is mounted on the heating surface of the cabinet 1;

[0043] The composite circulation pipeline includes a liquid inlet pipe 3, a liquid outlet pipe 4 and a multi-stage flow divider 5, and the multi-stage flow divider 5 is connected to an external coolant supply system;

[0044] The adaptive flow control valve 6 dynamically adjusts the flow of the cooling liquid according to the internal temperature of the cabinet 1.

[0045] The integrated heat dissipation structure includes a layered microchannel flow channel 7, which is embedded in the integrated heat dissipation structure. The inner diameter of the layered microchannel flow channel 7 gradually increases from the liquid inlet end to the liquid outlet end.

[0046] Spiral spoiler fins 8 and guide vanes 25 are installed inside the layered microchannel flow channel 7. The guide vanes 25 are arranged in a spiral shape inside the layered microchannel flow channel 7. The spiral spoiler fins 8 and the nano-hydrophilic coating 9 arranged inside the layered microchannel flow channel 7 constitute a heat exchange enhancement structure.

[0047] Specifically, the liquid inlet pipe of the integrated heat dissipation structure draws coolant from the external coolant supply system. When the coolant is injected into the layered microchannel flow channel 7 through the liquid inlet pipe of the integrated heat dissipation structure, the main flow channel preferentially receives heat from the high-temperature area. The gradually expanding cross-section flow channel accelerates fluid diffusion, increasing the flow rate of the coolant. As a result, the thickness of the temperature boundary layer formed on the inner wall of the layered microchannel flow channel 7 becomes thinner, thereby reducing the thermal resistance of the boundary layer and significantly improving the overall heat dissipation efficiency.

[0048] like Figure 9 and Figure 10 As shown, the fractal topology of the auxiliary flow channel guides the tributary flow to penetrate the heat-intensive area to dissipate heat in the heat-intensive area. The coolant in the tributary flow merges with the main channel after flowing through the heat-intensive area. Then the coolant flow enters the terminal turbulent cavity to form a vortex swirling flow, breaking the laminar flow state of the coolant in the circular flow channel. The coolant in the circular flow channel is guided by the oblique edge of the guide vane to generate a swirling vortex. This part of the vortex impacts the spiral spoiler fin 8, causing the spiral spoiler fin 8 to rotate inside the circular flow channel. The vortex and the spiral spoiler fin 8 cooperate to enhance the tumbling of the fluid. Under the flipping effect, the coolant fluid can better contact with the nano-hydrophilic coating 9. The nano-hydrophilic coating 9 reduces the contact angle of the droplet, so that the coolant forms an ultra-thin liquid film on the flow channel wall, thereby accelerating the release of latent heat of vaporization.

[0049] It should be noted that when the branch flow merges with the main channel, the branch flow outlet is exactly at the location of the spiral spoiler fin 8, which can also provide the spiral spoiler fin 8 with a force to rotate. After the coolant flows through the entire flow channel and absorbs heat, the coolant is led out to the coolant supply system by the liquid outlet pipe at the other end of the integrated heat dissipation structure, forming a coolant flow loop of the integrated heat dissipation structure.

[0050] One end of the liquid inlet pipe 3 is connected to the low-resistance connection structure, and a pressure self-balancing double-channel structure is provided inside the low-resistance connection structure. The double-channel structure includes a main path 10 and a bypass 11. The bypass 11 is provided with a flow limiter 12 and an elastic airbag 13. The low-resistance connection structure is connected to the radiator 2.

[0051] The low-resistance connection structure adopts a magnetically controlled variable current quick-connect joint 14 , and a Hall sensor 15 is provided inside the magnetically controlled variable current quick-connect joint 14 . The Hall sensor 15 is used to detect the flow rate in the magnetically controlled variable current quick-connect joint 14 .

[0052] Specifically, under normal working conditions, the coolant is mainly transported directly through the main line 10.

[0053] The flow limiter 12 in the bypass 11 maintains the minimum flow rate. When the pressure in the main path 10 suddenly increases, part of the fluid rushes into the bypass 11 to compress the elastic airbag 13 to store energy; when the pressure decreases, the airbag expands to push the fluid to replenish the main path 10. The magnetically controlled variable flow quick connector 14 has an integrated magnetic flap level gauge, which uses the level change of its float to characterize the flow rate, and combines the magnetic detection capability of the Hall sensor 15 to construct a composite system with both flow rate measurement and pressure buffering functions. The Hall sensor 15 monitors the flow rate in real time to prevent high-speed fluid from inducing pipeline resonance and avoid energy waste in the low flow rate area. The magnetically controlled variable flow quick connector, magnetic flap level gauge and Hall sensor 15 here are all existing structures, so they will not be elaborated on.

[0054] The outer wall of the liquid outlet pipe 4 is provided with a waste heat recovery structure, which includes a thermoelectric conversion plate 16. The thermoelectric conversion plate 16 is fitted and installed on the outside of the liquid outlet pipe 4. The output end of the thermoelectric conversion plate 16 is electrically connected to the fan power supply system of the cabinet 1.

[0055] Specifically, the waste heat of the liquid outlet pipe 4 drives the thermoelectric converter 16 to generate a Seebeck effect current: the hot end is close to the pipe wall to collect waste heat, and the cold end maintains the temperature difference through the air-cooled fin group; the generated current is stabilized by the converter and is preferentially supplied to the cabinet fan, causing the fan to rotate faster, thereby increasing the air flow into the radiator 2, reducing the initial temperature of the coolant, and forming an energy-saving closed loop.

[0056] The radiator 2 includes a main board 17 , a cover board 18 , a composite board 19 and a battery pack water cooling plate 20 . The main board 17 and the cover board 18 are connected by welding.

[0057] Specifically, deep fusion welding of the main board 17 and the cover plate 18 forms a continuous vacuum sealed cavity, ensuring zero leakage of the coolant. The copper layer of the composite plate 19 quickly conducts heat away from the chip, and the aluminum layer diffuses the heat laterally to the serpentine channel. The serpentine channel in the battery pack water cooling plate 20 forces the coolant to hit the turning wall, and the coolant fluid becomes turbulent, eliminating the temperature difference of the battery pack.

[0058] The adaptive flow control valve 6 includes a temperature sensor 21 , which is installed on one side of the outer wall of the cabinet 1 . A dual-mode switching structure 22 is installed on one side of the outer wall of the compound circulation pipeline. The temperature sensor 21 is electrically connected to the dual-mode switching structure 22 .

[0059] The dual-mode switching structure 22 includes a damping ring 23 . The damping ring 23 is disposed inside the compound circulation pipeline. A pressure compensator 24 is also disposed inside the compound circulation pipeline.

[0060] Specifically, the coordinated control of the dual-mode switching structure 22 is divided into two modes. First, the steady-state mode. When the temperature sensor 21 detects a balanced temperature rise, the damping ring 23 remains unobstructed and the pressure compensator 24 absorbs small pulsations. Second, the transient mode. When the local temperature rises sharply, the titanium-nickel shape memory alloy skeleton of the damping ring 23 shrinks due to heat, causing the cross-sectional area of ​​the flow channel to drop sharply and the coolant flow rate to double, thereby forming an enhanced emergency heat dissipation effect. At the same time, the pressure compensator 24 compensates the flow channel for pressure to further ensure an increase in flow rate.

[0061] Working principle: When the electronic components in the cabinet 1 generate heat, the heat is transferred to the layered microchannel flow channel 7. After the coolant is distributed from the external supply system through the multi-stage diverter 5, the flow rate is dynamically adjusted by the adaptive flow control valve 6 and injected into the system through the liquid inlet pipe 3. In the low-resistance connection structure: under normal working conditions, the coolant is directly transported through the main channel 10; when the pressure fluctuates, the elastic airbag 13 of the bypass 11 is compressed to store energy or expanded to replenish the flow, and the Hall sensor 15 in the magnetically controlled variable flow quick connector 14 monitors the flow rate in real time. The magnetically controlled variable flow quick connector 14 has an integrated magnetic flap level gauge, which uses the level change of its float to represent the flow rate. Combined with the magnetic detection capability of the Hall sensor 15, a composite system with both flow rate measurement and pressure buffering functions is constructed. The Hall sensor 15 monitors the flow rate in real time, and when the limit is exceeded, the magnetic field is excited to increase the viscosity of the magnetorheological fluid to suppress vibration and avoid energy waste in the low flow rate area.

[0062] The liquid inlet pipe of the integrated heat dissipation structure draws coolant from the external coolant supply system. After the coolant enters the layered microchannel flow channel 7, the gradually expanding cross-section flow channel of the main channel prolongs the fluid residence time and fully absorbs the heat in the high-temperature area. The fractal topology of the auxiliary flow channel guides the tributary to penetrate the heat-intensive area, and the terminal turbulent cavity destroys the laminar flow in the dense area. The guide vane 25 arranged in a spiral line inside the circular flow channel guides the coolant fluid to form a rotating vortex. This part of the vortex directly impacts the spiral spoiler fin 8 to rotate, and cooperates with the spiral spoiler fin 8 to enhance the tumbling of the fluid. Under the flipping effect of the spiral spoiler fin 8, part of the coolant fluid contacts the nano-hydrophilic coating 9. The nano-hydrophilic coating 9 spreads the coolant into an ultra-thin liquid film, accelerating the release of latent heat of vaporization. Through the cooperation of the spiral spoiler fin 8 and the nano-hydrophilic coating 9, an efficient heat exchange system is formed. When the coolant flows through, the gradually expanding cross-section of the main channel accelerates the diffusion of the fluid and reduces the thermal resistance of the boundary layer. The fractal topology of the auxiliary flow channel guides the tributary to penetrate the heat-intensive area, and the terminal turbulent cavity breaks the laminar flow state, such as Figure 10 and Figure 11 As shown, it is the terminal turbulence cavity. After the coolant flows through the entire flow channel and absorbs heat, the coolant is led out by the liquid outlet pipe at the other end of the integrated heat dissipation structure to form a coolant flow circuit of the integrated heat dissipation structure. The gradually expanding flow channel is arranged at the connection between the terminal turbulence cavity and the main channel, which expands the vortex formation area and makes the coolant break the laminar flow better.

[0063] When the heat-absorbing, heated coolant flows to the outlet pipe 4, the waste heat recovery structure converts the waste heat into electricity through the thermoelectric converter 16, driving the cabinet 1 fan to increase air intake, forming a coolant pre-cooling energy-saving closed loop. The adaptive flow control valve 6 switches its operating mode based on the signal from the temperature sensor 21: in steady-state mode, the damping ring 23 is fully open, and the pressure compensator 24 absorbs pulsation. In transient mode, the shape memory alloy skeleton of the damping ring 23 contracts, causing the flow channel cross-sectional area to drop sharply. At this time, the coolant flow rate doubles, creating an emergency enhanced heat dissipation effect. The pressure compensator 24 simultaneously counteracts the water hammer effect. The adaptive flow control valve 6, combined with the temperature sensor 21 and the dual-mode switching structure, achieves intelligent dynamic adjustment of the coolant flow rate. In steady-state mode, the damping ring 23 remains unobstructed, and the pressure compensator 24 absorbs small pulsations, maintaining a stable, low-speed circulation of the coolant and reducing water pump energy consumption. In transient mode, when the local temperature rises sharply, the shape memory alloy skeleton of the damping ring 23 contracts due to heat, causing the flow channel cross-sectional area to drop sharply, and the coolant flow rate doubles, creating an enhanced emergency heat dissipation effect.

[0064] The radiator 2 component ensures system reliability. The deep fusion welding between the main board 17 and the cover plate 18 forms a vacuum-sealed cavity to prevent leakage. The serpentine microchannel of the battery pack water-cooling plate 20 eliminates the temperature difference of the battery pack through return flushing.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low energy consumption water cooling radiator for large cabinets, characterized in that: include: A cabinet (1), which serves as a basic component and is used to carry and connect lower structures; A radiator (2) is installed inside the cabinet (1) and is used for dissipating heat from the cabinet; An integrated heat dissipation structure is mounted on the heating surface of the cabinet (1); A composite circulation pipeline comprises a liquid inlet pipe (3), a liquid outlet pipe (4) and a multi-stage flow divider (5), wherein the multi-stage flow divider (5) is connected to an external coolant supply system, one end of the liquid inlet pipe (3) is connected to a low-resistance connection structure, a pressure self-balancing double-channel structure is provided inside the low-resistance connection structure, the double-channel structure comprises a main channel (10) and a bypass channel (11), the bypass channel (11) is provided with a flow limiter (12) and an elastic airbag (13), and the low-resistance connection structure is connected to a radiator (2); An adaptive flow control valve (6) dynamically adjusts the flow of the coolant according to the internal temperature of the cabinet (1); The integrated heat dissipation structure comprises a layered microchannel flow channel (7), the layered microchannel flow channel (7) is embedded in the integrated heat dissipation structure, and the inner diameter of the layered microchannel flow channel (7) gradually increases from the liquid inlet end to the liquid outlet end; The layered microchannel flow channel (7) is internally provided with a spiral spoiler fin (8) and a guide vane (25), the guide vane (25) being arranged in a spiral line in the layered microchannel flow channel (7), the spiral spoiler fin (8) and the nano-hydrophilic coating (9) arranged inside the layered microchannel flow channel (7) forming a heat exchange enhancement structure, and the spiral spoiler fin (8) rotates inside the circular flow channel; The adaptive flow control valve (6) includes a temperature sensor (21), the temperature sensor (21) is installed on one side of the outer wall of the cabinet (1), a dual-mode switching structure (22) is installed on one side of the outer wall of the composite circulation pipeline, and the temperature sensor (21) is electrically connected to the dual-mode switching structure (22); The dual-mode switching structure (22) comprises a damping ring (23), wherein the damping ring (23) is arranged inside a composite circulation pipeline, and a pressure compensator (24) is also provided inside the composite circulation pipeline.

2. A low-energy water-cooling radiator for a large cabinet according to claim 1, characterized in that: The low-resistance connection structure adopts a magnetically controlled variable current quick-connect joint (14), wherein a Hall sensor (15) is provided inside the magnetically controlled variable current quick-connect joint (14), and the Hall sensor (15) is used to detect the flow rate in the magnetically controlled variable current quick-connect joint (14).

3. The low-energy water-cooling radiator for a large cabinet according to claim 1, characterized in that: The outer wall of the liquid outlet pipe (4) is provided with a waste heat recovery structure, and the waste heat recovery structure includes a thermoelectric conversion plate (16). The thermoelectric conversion plate (16) is fitted and installed on the outside of the liquid outlet pipe (4), and the output end of the thermoelectric conversion plate (16) is electrically connected to the fan power supply system of the cabinet (1).

4. The low-energy water-cooling radiator for a large cabinet according to claim 1, characterized in that: The radiator (2) comprises a main board (17), a cover board (18), a composite board (19) and a battery pack water cooling plate (20); the main board (17) and the cover board (18) are connected by welding.

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