Thermal management device of 5G communication module and thermal management method thereof

Abstract

The invention relates to a thermal management device of a 5G communication module and a thermal management method thereof.The thermal management device comprises a shell, a communication module and a temperature sensor, the communication module and the temperature sensor are arranged in the shell, an air outlet and an air inlet are symmetrically formed in the two sides of the shell, two sealing assemblies are arranged on the shell, and an exhaust assembly is arranged on the shell and located at the air outlet; the shell is provided with a driving assembly electrically connected with the temperature sensor, the driving assembly is also connected with the exhaust assembly and the sealing assembly, the temperature of the communication module is monitored in real time through the temperature sensor, and when the temperature exceeds a set threshold value, the driving assembly is started to drive the exhaust assembly to operate; meanwhile, the air outlet and the air inlet are switched from the sealing state to the opening state, the heat dissipation channel is opened only when needed, and the risks of energy consumption waste and external dust and moisture invasion caused by traditional continuous heat dissipation are avoided; and after the temperature is reduced, the driving assembly stops, and the sealing assembly automatically resets.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology for communication equipment, specifically a thermal management device and method for a 5G communication module. Background Technology

[0002] With the rapid development of 5G communication technology, 5G communication modules have significantly improved compared to 4G modules in terms of data transmission rate and signal processing capabilities. However, this has also led to a substantial increase in power consumption. The typical power consumption of a 5G communication module has increased from around 3W in a 4G module to 7W or even higher, resulting in the generation of more heat during operation. If this heat cannot be dissipated effectively and in a timely manner, it will cause the internal temperature of the module to rise, thereby affecting the performance stability of the communication module, reducing its lifespan, and potentially even causing communication failures, threatening the reliability of the entire communication system.

[0003] Furthermore, the operating states of 5G communication modules are highly variable, with data transmission rates and power dynamically changing based on factors such as signal strength and service demands. This necessitates thermal management methods that can monitor module temperature in real time and flexibly adjust heat dissipation or heating strategies according to temperature changes. However, existing thermal management devices often have the following shortcomings: To ensure effective heat dissipation, most thermal management devices keep their cooling channels open for extended periods. This not only wastes energy but also allows external dust and moisture to enter the module, affecting its normal operation. Some thermal management devices sacrifice heat dissipation efficiency to achieve a seal; while others, in order to improve heat dissipation efficiency, struggle to maintain a good seal, making the module susceptible to damage in harsh environments. Summary of the Invention

[0004] The purpose of this invention is to provide a thermal management device and method for a 5G communication module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A thermal management device for a 5G communication module includes a housing, a communication module, and a temperature sensor. The communication module is disposed at the bottom inner part of the housing, and the temperature sensor is disposed at the top inner part of the housing for real-time monitoring of the temperature of the communication module. The outer casing has symmetrical air outlets and air inlets on both sides, and two sets of sealing components are provided on the outer casing for sealing the air outlets and air inlets. An exhaust assembly is provided on the outer casing and located at the air outlet. When the exhaust assembly is in operation, it can exhaust the hot air inside the outer casing to the outside through the air outlet. The housing is provided with a drive assembly electrically connected to the temperature sensor. The drive assembly is also connected to the exhaust assembly and the sealing assembly. When the drive assembly is running, the exhaust assembly will follow suit. At the same time, the drive assembly will use centrifugal force to drive the sealing assembly to switch the air outlet and air inlet from a sealed state to an open state. When the drive assembly stops running, the exhaust assembly will stop, and the sealing assembly will reset to close the air outlet and air inlet again.

[0006] As a further embodiment of the present invention: the sealing assembly includes a slide rail and a baffle, the slide rail being disposed outside the housing, and the baffle being horizontally slidably disposed on the slide rail; The two baffles correspond to the air outlet and the air inlet respectively, and their dimensions are both larger than the dimensions of the air outlet and the air inlet.

[0007] As a further embodiment of the present invention: the exhaust assembly includes a fan frame and a central shaft that is horizontally rotatably mounted on the fan frame, and the fan frame is mounted at the air outlet on the outer casing; An impeller is coaxially mounted on the outer wall of the central shaft, and a first bevel gear is coaxially mounted on one end of the central shaft.

[0008] As a further embodiment of the present invention: the driving assembly includes a rotating rod and a motor, the rotating rod being horizontally rotatably mounted on the housing; The motor is mounted on the housing, and one end of the rotating rod is coaxially and fixedly connected to the output end of the motor.

[0009] As a further embodiment of the present invention: a second bevel gear is coaxially provided at the other end of the rotating rod, and the second bevel gear meshes with the first bevel gear.

[0010] As a further embodiment of the present invention: a limiting ring and a disk are coaxially provided on the outer wall of the rotating rod, the limiting ring being close to the second bevel gear and the disk being close to the motor; The outer wall of the rotating rod is movably fitted with a sleeve, which is located between the limiting ring and the disc. The outer wall of the sleeve is rotatably fitted with a bracket.

[0011] As a further embodiment of the present invention: a plurality of sliding grooves are formed on the disk along its diameter direction, and the plurality of sliding grooves are evenly distributed; Each of the multiple grooves has a slider slidably disposed therein, and the multiple sliders and the sleeve are rotatably connected by multiple connecting rods.

[0012] As a further embodiment of the present invention: a spring is sleeved on the outer wall of the rotating rod, and the two ends of the spring abut against the limiting ring and the sleeve respectively, so as to drive the sleeve to always have a tendency to move towards the disk; The sleeve is provided with two L-shaped rods, and the ends of the two L-shaped rods are fixedly connected to one end of the two baffles respectively.

[0013] A thermal management method for a 5G communication module using the thermal management device described above includes the following steps: Step 1: At room temperature, the self-sealing standby mode is activated. The temperature sensor continuously collects the surface temperature of the communication module. If the measured temperature is lower than the preset threshold, the motor remains powered off. The spring presses the sleeve against the disc, and the slider is pulled to the inner limit by the connecting rod. The two baffles fixed to the sleeve move horizontally inward under the constraint of the slide rail, completely covering and pressing the air outlet and air inlet. The inside of the outer shell is isolated from the outside, forming a dustproof and moisture-proof static sealed cavity. The communication module operates in a low-power sealed environment. Step 2: Over-temperature triggering and air duct opening. When the temperature exceeds the threshold and remains above it for a certain period of time, the temperature sensor outputs a start signal to the motor. The motor is powered on and drives the central shaft and impeller to rotate synchronously via the rotating rod, the second bevel gear, and the first bevel gear pair. At the same time, the rotating rod drives the disc to rotate. The slider moves radially outward along the slide groove under the action of centrifugal force. When the centrifugal force overcomes the spring preload, the connecting rod pushes the sleeve to compress the spring and slide towards the limit ring. The sleeve drives the two baffles to move synchronously outward along the slide rail via the L-shaped rod. The air outlet and air inlet are fully opened in an instant, establishing a direct ventilation duct between the air inlet, the module surface, and the air outlet. Step 3: Forced convection cooling and closed-loop regulation. The impeller continuously exhausts air, hot air inside the casing is drawn out, and cold air from the outside is replenished through the air inlet, forming a circulation. The temperature sensor transmits the temperature value in real time: if the temperature is still high, the speed is maintained or increased; if the temperature drops, the speed is reduced, realizing dynamic closed-loop regulation of heat dissipation power. Throughout the entire stage, the slider remains at the outer limit position, and the baffle is locked in the open position to ensure unobstructed airflow. Step 4: Cooling Hysteresis and Self-Sealing Recovery. When the temperature drops below the threshold and remains below it for a period of time, the motor is powered off, the impeller decelerates to zero due to the inertia of the rotating rod, the airflow stops, the centrifugal force disappears, the spring extends and pushes the sleeve back to its original position, the connecting rod pulls the slider back to its inner limit, the L-shaped rod drives the baffle to slide along the slide rail, re-pressing the air outlet, and the outer shell returns to a completely sealed state.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The temperature of the communication module is monitored in real time by a temperature sensor. When the temperature exceeds the set threshold, the drive component starts, driving the exhaust component to operate. At the same time, centrifugal force is used to activate the sealing component, switching the air outlet and air inlet from a sealed state to an open state, forming an efficient heat dissipation channel. This achieves intelligent and automated thermal management, opening the heat dissipation channel only when needed, avoiding the energy waste and risks of external dust and moisture intrusion caused by traditional continuous heat dissipation. When the temperature drops, the drive component stops, the sealing component automatically resets, and the air inlet and outlet are resealed, ensuring that the communication module operates stably in a closed, clean, and dry environment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a thermal management device for a 5G communication module.

[0016] Figure 2 This is a cross-sectional view of the housing in one embodiment of a thermal management device for a 5G communication module.

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 This is a schematic diagram showing the partial structural disassembly of the outer casing of a thermal management device for a 5G communication module, after half-sectioning.

[0019] Figure 5 This is a schematic diagram of some driving components in one embodiment of the thermal management device for a 5G communication module.

[0020] Figure 6 Another perspective cross-sectional view of the housing in one embodiment of the thermal management device for a 5G communication module.

[0021] Figure 7 for Figure 6 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Outer shell; 101. Air outlet; 102. Air inlet; 2. Communication module; 3. Temperature sensor; 4. Slide rail; 5. Baffle; 6. Fan frame; 7. Central shaft; 8. Impeller; 9. First bevel gear; 10. Rotating rod; 11. Motor; 12. Second bevel gear; 13. Limiting ring; 14. Disc; 1401. Slide groove; 15. Sleeve; 16. Sleeve frame; 17. Slider; 18. Connecting rod; 19. Spring; 20. L-shaped rod. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0025] Please see Figures 1-7 In this embodiment of the invention, a thermal management device for a 5G communication module includes a housing 1, a communication module 2, and a temperature sensor 3. The communication module 2 is disposed at the bottom inner part of the housing 1, and the temperature sensor 3 is disposed at the top inner part of the housing 1 for real-time monitoring of the temperature of the communication module 2. The outer casing 1 has an air outlet 101 and an air inlet 102 symmetrically arranged on both sides. The outer casing 1 is provided with two sets of sealing components, which are used to seal the air outlet 101 and the air inlet 102. An exhaust assembly is provided on the outer casing 1 and located at the air outlet 101. When the exhaust assembly is running, it can exhaust the hot air inside the outer casing 1 to the outside through the air outlet 101. The housing 1 is provided with a drive assembly electrically connected to the temperature sensor 3. The drive assembly is also connected to the exhaust assembly and the sealing assembly. When the drive assembly is running, the exhaust assembly will follow suit. At the same time, the drive assembly will use centrifugal force to drive the sealing assembly to switch the air outlet 101 and air inlet 102 from a sealed state to an open state. When the drive assembly stops running, the exhaust assembly stops, and the sealing assembly resets to close the air outlet 101 and air inlet 102 again.

[0026] In this solution, the temperature sensor 3 continuously collects the surface temperature of the communication module 2 and compares it with a preset threshold. If the measured temperature is less than the threshold, the drive component is powered off, the exhaust component is stationary, and there is no airflow. The sealing component is in the reset position, which simultaneously presses the air outlet 101 and the air inlet 102 tightly closed, isolating the inside of the outer shell 1 from the outside world, forming a dustproof and moisture-proof closed cavity. When temperature sensor 3 detects that the temperature is higher than the threshold, it immediately outputs a start signal to the drive component. After the drive component is powered on: First, it directly drives the exhaust assembly to rotate, forming a directional airflow from the air inlet 102 → the inner cavity of the outer shell 1 → the air outlet 101; second, it generates centrifugal force, which acts on the sealing assembly, causing the seal to slide outward radially and simultaneously detach from the sealing surfaces of the air outlet 101 and the air inlet 102. After the air outlet 101 and the air inlet 102 are opened, the exhaust component continuously discharges the internal hot air through the air outlet 101, and the external cold air is replenished from the air inlet 102, forming a circulating air duct to force convection heat dissipation for the communication module 2; the temperature sensor 3 transmits the temperature value back in real time to form a closed-loop control. When the temperature drops below the threshold, the drive component is powered off, the exhaust component stops rotating, and the airflow stops; the centrifugal force disappears, the sealing component rebounds under the action of the reset elastic force, and re-presses the air outlet 101 and the air inlet 102, and the outer shell 1 returns to a completely sealed state.

[0027] Please see Figure 1 and Figure 4 The sealing assembly includes a slide rail 4 and a baffle 5. The slide rail 4 is disposed outside the housing 1, and the baffle 5 is horizontally slidably disposed on the slide rail 4. The two baffles 5 correspond to the air outlet 101 and the air inlet 102 respectively, and their dimensions are both larger than the dimensions of the air outlet 101 and the air inlet 102.

[0028] In this embodiment, the baffle 5 is restricted to the outer wall of the housing 1 by the slide rail 4 and can only slide in the horizontal direction; because its size is larger than the size of the air outlet 101 and the air inlet 102, the baffle 5 will be pressed against the outside of the air outlet when no force is applied, completely covering the air outlet 101 and the air inlet 102, and the interior of the housing 1 is isolated from the outside.

[0029] Please see Figure 3 and Figure 7 The exhaust assembly includes a fan frame 6 and a central shaft 7 that is horizontally rotatably mounted on the fan frame 6. The fan frame 6 is located at the air outlet 101 on the outer casing 1. An impeller 8 is coaxially mounted on the outer wall of the central shaft 7, and a first bevel gear 9 is coaxially mounted on one end of the central shaft 7.

[0030] In this embodiment, the exhaust assembly mainly consists of a fan frame 6, a central shaft 7, an impeller 8, and a first bevel gear 9. The fan frame 6 is fixedly installed at the air outlet 101 on the outer casing 1, and the central shaft 7 is horizontally rotatably installed inside the fan frame 6. The impeller 8 is fixedly installed on the outer wall of the central shaft 7. When the central shaft 7 rotates, the impeller 8 rotates accordingly, and the hot air inside the outer casing 1 is continuously drawn in and accelerated out, forming a negative pressure zone. Cold air is replenished from the air inlet 102 to complete forced convection cooling. After the drive stops, the central shaft 7 and the impeller 8 decelerate to zero due to inertia, and the airflow terminates. A first bevel gear 9 is coaxially fixedly installed at one end of the central shaft 7, so the cooling operation can be achieved when the first bevel gear 9 rotates.

[0031] Please see Figure 3 , Figure 5 and Figure 7 The drive assembly includes a rotating rod 10 and a motor 11, with the rotating rod 10 horizontally rotatably mounted on the housing 1; The motor 11 is mounted on the housing 1, and one end of the rotating rod 10 is coaxially and fixedly connected to the output end of the motor 11; The other end of the rotating rod 10 is coaxially provided with a second bevel gear 12, which meshes with the first bevel gear 9.

[0032] In this embodiment, when the motor 11 starts, its output end drives the rotating rod 10 to rotate vertically. The other end of the rotating rod 10 is coaxially provided with a second bevel gear 12, which meshes with the first bevel gear 9 in the exhaust assembly, thereby transmitting the rotational motion of the rotating rod 10 to the central shaft 7, driving the impeller 8 to rotate, and realizing the heat dissipation function of the exhaust assembly.

[0033] Please see Figure 3 , Figure 5 and Figure 7 The outer wall of the rotating rod 10 is coaxially provided with a limiting ring 13 and a disk 14, the limiting ring 13 being close to the second bevel gear 12, and the disk 14 being close to the motor 11; The outer wall of the rotating rod 10 is movably fitted with a sleeve 15, the sleeve 15 is located between the limiting ring 13 and the disc 14, and the outer wall of the sleeve 15 is rotatably fitted with a sleeve frame 16. The disk 14 has a plurality of sliding grooves 1401 along its diameter direction, and the plurality of sliding grooves 1401 are evenly distributed. Each of the multiple slide grooves 1401 has a slider 17 slidably disposed therein, and the multiple sliders 17 and the sleeve 16 are rotatably connected by multiple connecting rods 18. A spring 19 is sleeved on the outer wall of the rotating rod 10. The two ends of the spring 19 abut against the limiting ring 13 and the sleeve 15 respectively, so as to drive the sleeve 15 to always have a tendency to move towards the disk 14. Two L-shaped rods 20 are respectively provided on the sleeve 15, and the ends of the two L-shaped rods 20 are respectively fixedly connected to one end of the two baffles 5.

[0034] In this embodiment, the spring 19 is pre-compressed between the limiting ring 13 and the sleeve 15, pushing the sleeve 15 to press tightly against the disc 14; the connecting rod 18 pulls the slider 17 toward the center of the rotating rod 10, and the sleeve 16 is at the closest point; the L-shaped rod 20 moves inward with the sleeve 15, causing the two baffles 5 to seal the air outlet 101 and the air inlet 102, and the outer shell 1 is completely sealed. When the motor 11 starts, the rotating rod 10 and the disk 14 will rotate synchronously. The slider 17 will temporarily lag behind due to mass inertia and will have a radial outward sliding tendency relative to the disk 14. However, at low speed, the centrifugal force is not enough to overcome the preload of the spring 19, and the baffle 5 will remain closed. When the rotation speed reaches the set value, the centrifugal force on the slider 17 is greater than the tension of the spring 19, and the slider 17 moves outward synchronously along the slide groove 1401; the connecting rod 18 pushes the sleeve 16 and the sleeve 15 to compress the spring 19 in the direction of the limiting ring 13; the L-shaped rod 20 slides outward horizontally with the sleeve 15, driving the two baffles 5 to move outward synchronously along the slide rail 4, and the air outlet 101 and the air inlet 102 open instantly; Rotational speed is maintained, centrifugal force is constant, slider 17 remains at its outer limit position, spring 19 is continuously compressed, and baffle 5 is locked in the open position; impeller 8 simultaneously exhausts air to achieve forced convection cooling. When the motor 11 is turned off, the rotating rod 10 will stop rotating, the centrifugal force will disappear, the spring 19 will return to its original position and push the sleeve 15 back to its original position. The connecting rod 18 will pull back the slider 17, and at the same time the L-shaped rod 20 will return to its original position and move inward, thereby driving the baffle 5 to press the air outlet 101 and the air inlet 102 again, and the outer shell 1 will be restored to a sealed state.

[0035] A thermal management method for a 5G communication module using the thermal management device described above includes the following steps: Step 1: At room temperature, the self-sealing standby mode is activated. The temperature sensor continuously collects the surface temperature of the communication module. If the measured temperature is lower than the preset threshold, the motor remains powered off. The spring presses the sleeve against the disc, and the slider is pulled to the inner limit by the connecting rod. The two baffles fixed to the sleeve move horizontally inward under the constraint of the slide rail, completely covering and pressing the air outlet and air inlet. The inside of the outer shell is isolated from the outside, forming a dustproof and moisture-proof static sealed cavity. The communication module operates in a low-power sealed environment. Step 2: Over-temperature triggering and air duct opening. When the temperature exceeds the threshold and remains above it for a certain period of time, the temperature sensor outputs a start signal to the motor. The motor is powered on and drives the central shaft and impeller to rotate synchronously via the rotating rod, the second bevel gear, and the first bevel gear pair. At the same time, the rotating rod drives the disc to rotate. The slider moves radially outward along the slide groove under the action of centrifugal force. When the centrifugal force overcomes the spring preload, the connecting rod pushes the sleeve to compress the spring and slide towards the limit ring. The sleeve drives the two baffles to move synchronously outward along the slide rail via the L-shaped rod. The air outlet and air inlet are fully opened in an instant, establishing a direct ventilation duct between the air inlet, the module surface, and the air outlet. Step 3: Forced convection cooling and closed-loop regulation. The impeller continuously exhausts air, hot air inside the casing is drawn out, and cold air from the outside is replenished through the air inlet, forming a circulation. The temperature sensor transmits the temperature value in real time: if the temperature is still high, the speed is maintained or increased; if the temperature drops, the speed is reduced, realizing dynamic closed-loop regulation of heat dissipation power. Throughout the entire stage, the slider remains at the outer limit position, and the baffle is locked in the open position to ensure unobstructed airflow. Step 4: Cooling Hysteresis and Self-Sealing Recovery. When the temperature drops below the threshold and remains below it for a period of time, the motor is powered off, the impeller decelerates to zero due to the inertia of the rotating rod, the airflow stops, the centrifugal force disappears, the spring extends and pushes the sleeve back to its original position, the connecting rod pulls the slider back to its inner limit, the L-shaped rod drives the baffle to slide along the slide rail, and the air inlet is pressed again. The outer shell is restored to a completely sealed state within a few seconds.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thermal management device for a 5G communication module, comprising a housing (1), a communication module (2), and a temperature sensor (3), characterized in that, The communication module (2) is located at the bottom inside the housing (1), and the temperature sensor (3) is located at the top inside the housing (1) for real-time monitoring of the temperature of the communication module (2). The outer shell (1) is symmetrically provided with an air outlet (101) and an air inlet (102) on both sides. The outer shell (1) is provided with two sets of sealing components, which are used to seal the air outlet (101) and the air inlet (102). An exhaust assembly is provided on the outer casing (1) and located at the air outlet (101). When the exhaust assembly is running, it can exhaust the hot air inside the outer casing (1) to the outside through the air outlet (101). The housing (1) is provided with a drive assembly electrically connected to the temperature sensor (3). The drive assembly is also connected to the exhaust assembly and the sealing assembly respectively. When the drive assembly is running, the exhaust assembly will follow and run. At the same time, the drive assembly will use centrifugal force to drive the sealing assembly to move, so that the air outlet (101) and air inlet (102) are switched from the sealed state to the open state. When the drive assembly stops running, the exhaust assembly is stationary, and the sealing assembly is reset to close the air outlet (101) and air inlet (102) again.

2. The thermal management device for a 5G communication module according to claim 1, characterized in that, The sealing assembly includes a slide rail (4) and a baffle (5). The slide rail (4) is disposed outside the housing (1), and the baffle (5) is horizontally slidably disposed on the slide rail (4). The two baffles (5) correspond to the air outlet (101) and the air inlet (102) respectively, and their dimensions are larger than those of the air outlet (101) and the air inlet (102).

3. The thermal management device for a 5G communication module according to claim 2, characterized in that, The exhaust assembly includes a fan frame (6) and a central shaft (7) that is horizontally rotatably mounted on the fan frame (6). The fan frame (6) is located at the air outlet (101) on the outer casing (1). An impeller (8) is coaxially arranged on the outer wall of the central shaft (7), and a first bevel gear (9) is coaxially arranged at one end of the central shaft (7).

4. The thermal management device for a 5G communication module according to claim 3, characterized in that, The drive assembly includes a rotating rod (10) and a motor (11), the rotating rod (10) being horizontally rotatable on the housing (1); The motor (11) is mounted on the housing (1), and one end of the rotating rod (10) is coaxially and fixedly connected to the output end of the motor (11).

5. The thermal management device for a 5G communication module according to claim 4, characterized in that, The other end of the rotating rod (10) is coaxially provided with a second bevel gear (12), which meshes with the first bevel gear (9).

6. The thermal management device for a 5G communication module according to claim 5, characterized in that, The outer wall of the rotating rod (10) is coaxially provided with a limiting ring (13) and a disk (14), the limiting ring (13) being close to the second bevel gear (12), and the disk (14) being close to the motor (11). The outer wall of the rotating rod (10) is movably fitted with a sleeve (15), the sleeve (15) is located between the limiting ring (13) and the disc (14), and the outer wall of the sleeve (15) is rotatably fitted with a sleeve frame (16).

7. The thermal management device for a 5G communication module according to claim 6, characterized in that, The disk (14) has a plurality of grooves (1401) along its diameter direction, and the plurality of grooves (1401) are evenly distributed. Each of the multiple slide grooves (1401) is slidably provided with a slider (17), and the multiple sliders (17) and the sleeve (16) are rotatably connected by multiple connecting rods (18).

8. A thermal management device for a 5G communication module according to claim 6, characterized in that, A spring (19) is sleeved on the outer wall of the rotating rod (10). The two ends of the spring (19) abut against the limiting ring (13) and the sleeve (15) respectively, so as to drive the sleeve (15) to always have the tendency to move towards the disk (14). Two L-shaped rods (20) are respectively provided on the sleeve (15), and the ends of the two L-shaped rods (20) are respectively fixedly connected to one end of the two baffles (5).

9. A method for thermal management of a 5G communication module using the thermal management device according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: At room temperature, the self-sealing standby mode is activated. The temperature sensor continuously collects the surface temperature of the communication module. If the measured temperature is lower than the preset threshold, the motor remains powered off. The spring presses the sleeve against the disc, and the slider is pulled to the inner limit by the connecting rod. The two baffles fixed to the sleeve move horizontally inward under the constraint of the slide rail, completely covering and pressing the air outlet and air inlet. The inside of the outer shell is isolated from the outside, forming a dustproof and moisture-proof static sealed cavity. The communication module operates in a low-power sealed environment. Step 2: Over-temperature triggering and air duct opening. When the temperature exceeds the threshold and remains above it for a certain period of time, the temperature sensor outputs a start signal to the motor. The motor is powered on and drives the central shaft and impeller to rotate synchronously via the rotating rod, the second bevel gear, and the first bevel gear pair. At the same time, the rotating rod drives the disc to rotate. The slider moves radially outward along the slide groove under the action of centrifugal force. When the centrifugal force overcomes the spring preload, the connecting rod pushes the sleeve to compress the spring and slide towards the limit ring. The sleeve drives the two baffles to move synchronously outward along the slide rail via the L-shaped rod. The air outlet and air inlet are fully opened in an instant, establishing a direct ventilation duct between the air inlet, the module surface, and the air outlet. Step 3: Forced convection cooling and closed-loop regulation. The impeller continuously exhausts air, hot air inside the casing is drawn out, and cold air from the outside is replenished through the air inlet, forming a circulation. The temperature sensor transmits the temperature value in real time. If the temperature is still high, the speed is maintained or increased. If the temperature drops, reduce the rotation speed to achieve dynamic closed-loop adjustment of heat dissipation power. Throughout the process, the slider remains at the outer limit position and the baffle is locked in the open position to ensure unobstructed airflow. Step 4: Cooling Hysteresis and Self-Sealing Recovery. When the temperature drops below the threshold and remains below it for a period of time, the motor is powered off, the impeller decelerates to zero due to the inertia of the rotating rod, the airflow stops, the centrifugal force disappears, the spring extends and pushes the sleeve back to its original position, the connecting rod pulls the slider back to its inner limit, the L-shaped rod drives the baffle to slide along the slide rail, re-pressing the air outlet, and the outer shell returns to a completely sealed state.

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