Immersed enhanced heat exchange device based on electromagnetic driving

Abstract

The invention discloses an immersed enhanced heat exchange device based on electromagnetic driving, which is characterized in that a temperature sensor is mounted on the surface of equipment needing to be cooled, the cooled equipment is divided into a plurality of equipment groups, and measured temperature signals are transmitted to a controller; the enhanced heat exchange device comprises a magnetic stirrer, a magnet, a motor, a controller and a swing mechanism, the controller controls the motor, the motor drives the swing mechanism, and therefore the magnet installed on the swing mechanism swings around the circle center and forms a certain included angle with the horizontal direction. And the magnetic stirrer in the immersion type is attracted to swing at a certain included angle with the horizontal direction, and the immersion type cooling liquid is disturbed to form turbulent flow, so that the heat exchange effect of cooled equipment and the cooling liquid is enhanced. Switching under different temperature modes can be achieved through control over the motor, and the efficient operation capacity of the heat management system is further improved through enhanced heat exchange between cooling liquid and cooled equipment.

Description

Technical Field

[0001] The present invention belongs to the field of thermal management technology, and specifically relates to immersion thermal management technology in energy storage systems, data centers, electronic equipment and other applications, and performs enhanced heat exchange on immersion cooling systems. The present invention is an immersion enhanced heat exchange device based on electromagnetic drive. Background Art

[0002] In application scenarios such as energy storage systems, data centers, and various high-performance electronic devices, a large amount of heat is generated during operation. If the heat cannot be effectively dissipated, the performance and stability of the equipment will be reduced, and even safety hazards will be caused. How to perform more efficient thermal management in these scenarios is a technical problem that needs to be solved urgently.

[0003] Traditional thermal management methods mainly include air cooling and liquid cooling. Air cooling systems are widely used due to their simple structure and low cost, but under high heat load conditions, their heat dissipation capacity is often insufficient, which can easily lead to equipment overheating. Especially in applications with high power density, the efficiency of air cooling is particularly limited. In addition, although liquid cooling technology is relatively good in terms of heat conduction efficiency, its system design is complex and requires auxiliary equipment such as pumps and pipes, which increases the weight of the system and the difficulty of maintenance.

[0004] In order to solve these problems, immersion cooling technology has gradually gained attention. This technology immerses the equipment in a coolant with good thermal conductivity and uses the direct contact between the liquid and the surface of the equipment for efficient heat exchange. The immersion cooling system can quickly absorb the heat generated by the equipment and take the heat away by natural convection or forced convection, thereby achieving effective temperature control. However, the existing immersion cooling design still has some shortcomings, such as the poor temperature uniformity of the coolant and the equipment in the immersion cooling system, which causes temperature differences between equipment units. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an immersion enhanced heat exchange device based on electromagnetic drive, which can enhance the heat exchange between the coolant and the cooled equipment so that the temperature of the equipment and the coolant is as uniform as possible, further improving the ability of the thermal management system to operate efficiently, thereby improving the utilization efficiency and overall safety of the equipment.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An immersion-type enhanced heat exchange device based on electromagnetic drive, comprising a magnetic stirrer, a magnet, a controller and a drive device;

[0008] The magnetic stirrers are distributed between the cooled equipment groups and are movably mounted on the bracket. The cooled equipment groups are obtained by grouping equipment units that need to be cooled in the immersion cooling system, and each equipment unit is immersed in the coolant.

[0009] The magnet is located outside the immersion cooling system and connected to the driving device, and the direction of the internal magnetic flux lines of the magnet is perpendicular to the direction of the internal magnetic flux lines of the magnetic stirrer;

[0010] The controller is used to control the driving device to drive the magnet to swing back and forth. The magnetic stirrer is within the magnetic force range of one or several magnets, and its position and magnetic force are configured to enable it to swing synchronously with the one or several magnets to achieve turbulence of the coolant.

[0011] In one embodiment, the equipment units that need to be cooled are grouped in the following manner:

[0012] The equipment is grouped into rows and columns, and m rows or m columns are defined as a cooled equipment group. The magnetic stirrers are distributed between adjacent cooled equipment groups and between the cooling equipment groups and the inner wall of the shell of the immersion cooling system, and the magnetic stirrers are parallel to each other.

[0013] In one embodiment, the magnetic stirrer is movably mounted on the bracket, and the method is as follows:

[0014] The magnetic stirrer is installed on the bracket through a rotating assembly, and the rotating axis of the rotating assembly is perpendicular to the direction of the internal magnetic flux lines of the magnetic stirrer.

[0015] In one embodiment, the drive device comprises a motor;

[0016] The magnet is directly connected to the transmission shaft of the motor, the transmission shaft is perpendicular to the direction of the internal magnetic flux lines of the magnet, and the reciprocating swing of the magnet is achieved through the reciprocating rotation of the motor; or,

[0017] The magnet is connected to a swing arm, and the swing arm is connected to an eccentric wheel on a transmission shaft of a motor. The motor drives the eccentric wheel to rotate, thereby realizing the reciprocating swing of the magnet.

[0018] In one embodiment, the frequency of the reciprocating swing is adjusted by controlling the rotation speed of the motor according to the temperature threshold required for cooling, and the temperature threshold is set to two levels. When the temperature threshold is the second level, the rotation speed of the motor is N1, and the corresponding frequency of the reciprocating swing is F1; when the temperature threshold is the first level, the rotation speed of the motor is N2, and the corresponding frequency of the reciprocating swing is F2, N2=n×N1, n∈(2,4).

[0019] In one embodiment, when the magnet is directly connected to the transmission shaft of the motor, the reciprocating rotation amplitude of the motor is designed to limit the reciprocating swing angle;

[0020] When the magnet is connected to the swing arm, a limit device is provided at the connection to prevent the swing angle from exceeding a preset value.

[0021] In one embodiment, a temperature sensor is installed on the surface of the equipment unit, and the temperature signal measured by the temperature sensor is transmitted to the controller. When the temperature exceeds a threshold, the driving device of the magnet corresponding to the magnetic stirrer on one side or both sides of the cooled equipment group where the corresponding equipment unit is located is started.

[0022] In one embodiment, one end of the magnetic stirrer is an N pole and the other end is an S pole, and two adjacent magnetic stirrers are arranged in parallel, and the magnetic poles of the two adjacent magnetic stirrers are opposite;

[0023] The magnet is arranged at the same end of two adjacent magnetic stirrers, one end of the magnet is an N pole, the other end is an S pole, and its length and magnetic force are set so that its N pole and the S pole of one of the two adjacent magnetic stirrers are within an attraction range, and its S pole and the N pole of the other of the two adjacent magnetic stirrers are within an attraction range.

[0024] In one embodiment, the magnets are arranged at two ends of the immersion cooling system, and the directions of the internal magnetic flux lines are opposite so as to act synchronously on the same magnetic stirrer.

[0025] In one embodiment, in a non-swinging state, the directions of the internal magnetic flux lines of the magnet and the magnetic stirrer are both horizontal; in the reciprocating swing, the angle between the internal magnetic flux lines of the magnet and the horizontal direction is 45°±10°.

[0026] Compared with the prior art, the present invention causes the magnetic stirrer in the immersion cooling system to swing at a certain angle through the external magnet of the immersion cooling system, thereby disturbing the coolant in the immersion cooling system to form a turbulent flow, enhancing the heat exchange effect between the equipment unit and the coolant, and further improving the ability of the thermal management system to operate efficiently, thereby improving the use efficiency and overall safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the principle of the electromagnetically driven immersed enhanced heat exchange of the present invention.

[0028] Figure 2 for Figure 1 Right view of .

[0029] Figure 3 for Figure 1 Left view of .

[0030] Figure 4It is a schematic structural diagram of the magnetic stirrer of the present invention (left view).

[0031] Figure 5 It is a schematic structural diagram (front view) of the magnetic stirrer of the present invention.

[0032] Figure 6 The figure is a schematic diagram of the swinging motion of the magnetic stirrer of the present invention around the center of the support shaft (the figure shows a 15° clockwise and counterclockwise rotation).

[0033] Figure 7 This is a structural schematic diagram of the magnetic stirrer of the present invention swinging 15° clockwise around the center of the support shaft (left view).

[0034] Figure 8 This is a structural schematic diagram (front view) of the magnetic stirrer of the present invention swinging 15° clockwise around the center of the support shaft.

[0035] Fig. 9 The figure is a schematic diagram of the structure of a driving device of the present invention.

[0036] Fig.10 for Fig. 9 Schematic diagram of the eccentric wheel structure in the drive device.

[0037] Fig.11 Schematic diagram of the shape of the magnetic stirrer of the present invention

[0038] Fig.12 Schematic diagram of the magnet shape of the present invention

[0039] In the figure: 1- immersion cooling system; 2- cooled equipment group; 3- equipment unit; 4- magnetic stirrer; 5- cooling liquid; 6- fixed bracket; 7- magnet; 8- swing arm; 9- motor; 10- controller; 11- alternating current rectifier; 12- alternating current, 13- transmission shaft, 14- eccentric wheel. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0041] like Figure 1 As shown, the immersion cooling system 1 arranges a coolant 5 in a housing, immerses several equipment units 3 that need to be cooled, such as a battery pack, a data center, etc., in the coolant 5, and uses the coolant 5 to cool down the equipment units 3. In practical applications, the cooling effect of the static coolant 5 is prioritized, especially when the temperature of one or several equipment units 3 rises, it is difficult to achieve targeted cooling in time.

[0042] To this end, the present invention adopts an immersion-type enhanced heat exchange device based on electromagnetic drive, referring to Figure 1 , Figure 2 and Figure 3As shown, it mainly includes a magnetic stirrer 4, a magnet 7, a controller 10 and a driving device.

[0043] The magnetic stirrer 4 is located in the immersion cooling system 1 and immersed in the coolant 5. The magnetic stirrer 4 is distributed between the cooling device groups 2 obtained by grouping the device units 3 to be cooled, and is installed by the bracket 6. The installation of the magnetic stirrer 4 adopts a movable structure so that the magnetic stirrer 4 can be shaken, swung or swayed to a certain extent under the action of external force, and the coolant 5 around it is disturbed by these actions. Optionally, these actions can be controlled as periodic actions.

[0044] The magnet 7 is located outside the immersion cooling system 1, and is within the range of magnetic force with the magnetic stirrer 4. The directions of the internal magnetic flux lines of the two are perpendicular. The magnet 7 is connected to a driving device, and the controller 10 controls the action parameters of the driving device, and the driving device drives the magnet 7 to swing back and forth. The reciprocating swing of one or more magnets 7 drives the synchronous swing of one or more magnetic stirrers 4, and then realizes the turbulence of the coolant 5, and enhances the heat exchange effect between the equipment unit 3 and the coolant 5. When only the magnetic stirrer 4 within the range of one or several equipment units 3 with rising temperature is targeted, the enhanced heat exchange for the specific equipment unit 3 is achieved.

[0045] In some embodiments of the present invention, for the convenience of control and responsible component arrangement, the equipment units 3 that need to be cooled are grouped in the following manner:

[0046] By row and column, each device unit 3 is divided into multiple rows and columns, and m rows or m columns of units 3 are defined as a cooled device group 2. The smaller the value of m, the more precise the control, but the more corresponding components need to be arranged, and the more space is occupied in the system. Therefore, it is necessary to reasonably weigh the group size.

[0047] The magnetic stirrers 4 are distributed between adjacent cooled equipment groups 2, and between the cooling equipment groups 2 and the inner wall of the immersion cooling system 1. However, magnetic stirrers 4 may not be arranged between some cooled equipment groups 2, which is mainly determined according to the heating conditions of the specific equipment units 3. Thus, the magnetic stirrers 4 are parallel to each other, and the parallel structure is not only easier to control, but also can make the turbulence more regular.

[0048] In some embodiments of the present invention, the magnetic stirrer 4 is mounted on the bracket 6 via a rotating assembly, which means that the magnetic stirrer 4 can rotate / swing along the rotating axis of the rotating assembly, and the rotating axis is perpendicular to the direction of the internal magnetic flux lines of the magnetic stirrer 4, that is, the rotation / swing of the magnetic stirrer 4 means that when its N-pole end is raised, its S-pole end is lowered, and vice versa.

[0049] Optionally, the rotating assembly here can be a bearing member, and the center of the magnetic stirrer 4 is assembled with the bracket 6 through the bearing member. The bracket 6 can be fixed to the bottom of the inner wall of the shell of the immersion cooling system 1. The specific installation form of the magnetic stirrer 4 on the bracket 6 and the swing effect are as follows: Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in the illustrated structure, the magnetic stirrer 4 swings up and down around the rotation axis with its own center as the center in the gap between adjacent cooled equipment groups 2, thereby achieving a disturbing effect on the cooling liquid 5 around it.

[0050] In some embodiments of the present invention, the driving device mainly includes a motor 9, that is, the present invention adopts a motor driving mode, with the motor 9 as the power source. Figure 1 As shown, the device uses alternating current 12, which is rectified by an alternating current rectifier 11 and then supplied to a controller 10 and a motor 9. The motor 9 can be a stepper motor or a servo motor, which has good control accuracy and positioning capability and is suitable for precise angle and displacement control. The controller 10 includes a control unit and a drive module. The control unit uses a microcontroller (such as Arduino, Raspberry Pi or other single-chip microcomputer) as a control element, which is responsible for receiving input signals (such as electrical signals from a temperature sensor) and controlling the movement of the motor 10.

[0051] Optionally, the driving device can adopt two structures to achieve reciprocating swing.

[0052] In the first structure, the magnet 7 is directly connected to the transmission shaft 13 of the motor 9, and the connection point is preferably the center point of the magnet 7. The transmission shaft 13 is perpendicular to the direction of the internal magnetic flux lines of the magnet 7, and the reciprocating rotation of the motor 9 can realize the reciprocating swing of the magnet 7. In this way, the reciprocating rotation amplitude of the motor 9 can be designed to limit the angle of the reciprocating swing to prevent the swing amplitude from being too large, causing the internal magnetic stirrer 4 to hit the shell wall during the synchronous swing.

[0053] The second structure, such as Fig. 9 and Fig.10As shown, a rocker arm structure is adopted, an eccentric wheel 14 is connected to the transmission shaft 13 of the motor 9, a swing arm 8 is connected to the eccentric wheel 14, and the magnet 7 is connected to the swing arm 8, and the connection point is preferably the center point of the magnet 7. The rotation of the eccentric wheel 14 is driven by the motor 9, thereby realizing the reciprocating swing of the magnet 7. The motor 9 receives instructions through the controller 10. As the motor 9 rotates, the eccentric wheel 14 located on the transmission shaft 13 drives the swing arm 8 to swing. The eccentric wheel 14 makes the swing arm 8 have a certain swing angle (such as a 45° angle with the horizontal direction), and drives the magnet 7 to swing up and down around the center. In this way, a limit device can be set at the connection between the magnet 7 and the swing arm 8 to prevent exceeding the preset swing angle and preventing the swing amplitude from being too large, causing the internal magnetic stirrer 4 to hit the shell wall when swinging synchronously.

[0054] Furthermore, in the second mode, the swing frequency of the swing arm 8 can be adjusted by controlling the speed of the motor 9 according to the temperature threshold that needs to be cooled. In this embodiment, two levels of temperature thresholds can be set (both lower than the thermal runaway temperature of the equipment unit 3 that needs to be cooled). At the second temperature threshold, the controller 10 sends a start signal to the motor 9, and the motor 9 starts to run at a speed of N1, and the corresponding swing frequency of the swing arm 8 is F1; at the first temperature threshold, the speed of the motor 9 increases from N1 to N2, and the corresponding swing frequency of the swing arm is F2, N2 = n × N1, n∈(2,4).

[0055] In order to achieve more reasonable management, the present invention installs a temperature sensor on the surface of each equipment unit 3. The temperature signal measured by the temperature sensor is transmitted to the controller 10. Only when the temperature exceeds the temperature threshold required for cooling, the drive device of the magnet 7 corresponding to the cooled equipment group 2 where the corresponding equipment unit 3 is located is started. When it is lower than the threshold again, the controller 10 sends a stop signal and the corresponding action stops. In this way, personalized enhanced heat exchange is achieved for each equipment unit 3. For example, in each cooled equipment group 2, the highest detection value of each temperature sensor is used as the temperature signal transmitted to the controller 10.

[0056] refer to Fig.11 As shown, the magnetic stirrer 4 of the present invention is in the shape of a rectangular parallelepiped, and can be rounded to prevent damage to the system housing or the device unit 3. Along its long side, one end is an N pole and the other end is an S pole, so the direction of its internal magnetic flux lines is also the direction of its long side. Two adjacent magnetic stirrers 4 are arranged in parallel, and the magnetic poles of the two adjacent magnetic stirrers 4 are opposite. That is, the two adjacent magnetic stirrers 4 have an N pole and an S pole at one end in the same direction, respectively, and an S pole and an N pole at the other end in the same direction, respectively, as shown in FIG. Figure 1 shown.

[0057] refer to Fig.12As shown, the magnet 7 of the present invention is in the shape of a rectangular parallelepiped, and can be designed with rounded corners to prevent damage to the system housing or other components. Along its long side, one end is an N pole and the other end is an S pole, so the direction of its internal magnetic flux lines is also the direction of its long side. The magnet 7 is arranged at the same end in the same direction of two adjacent magnetic stirrers 4. The N pole of the magnet 7 interacts with the S pole of one magnetic stirrer 4, and the S pole interacts with the N pole of the other magnetic stirrer 4. The interaction here refers to the position, length and magnetic setting of the magnet 7 and the magnetic stirrer 4, so that when the magnet 7 swings, it can drive the movement of the magnetic stirrer 4. The magnetic setting of the present invention mainly refers to the magnetization intensity.

[0058] In a further embodiment, magnets 7 may be arranged at both ends of the immersion cooling system 1, specifically, magnets 7 are arranged at both ends of the N pole and the S pole of the magnetic stirrer 4, and the internal magnetic flux lines of the magnets 7 at both ends are ensured to be in opposite directions, and the N pole of the magnet 7 at each end interacts with the S pole of the magnetic stirrer 4, and the S pole interacts with the N pole of the magnetic stirrer 4, thereby acting on the same magnetic stirrer 4 synchronously, improving the effect of the action on the magnetic stirrer 4. This embodiment is suitable for scenes where the magnetic stirrer 4 is relatively long.

[0059] In a further embodiment, the directions of the internal magnetic flux lines of the magnet 7 and the magnetic stirrer 4 of the present invention are both horizontal and perpendicular to each other. Therefore, the reciprocating swing of the magnet 7 is an "up and down swing" along an axis parallel to the direction of the internal magnetic flux lines of the magnetic stirrer 4, and the swinging of the magnetic stirrer 4 is an "up and down swing" along an axis parallel to the direction of the internal magnetic flux lines of the magnet 7. When the present invention sets the swinging, the angle between the direction of the internal magnetic flux lines and the horizontal direction is 45°±10°.

[0060] The present invention Figure 1 In the embodiment shown, the device unit 3 is divided into four cooled device groups 2. Each cooled device group 2 is equipped with a temperature sensor to measure its temperature, and transmits the measured temperature signal to the controller 10, which executes an instruction on whether to start the motor 9 according to different real-time temperature measurement values.

[0061] When the temperature sensor monitors that the temperature of a certain device unit 3 does not reach the secondary temperature threshold, the controller 10 sends a shutdown or stop signal to the motor 9, and the motor 9 does not work.

[0062] When the temperature sensor monitors that the temperature of a device unit 3 does not reach the secondary temperature threshold, the controller 10 sends a start signal to the motor 9, and the motor 9 rotates, driving the magnet 7 to swing periodically, thereby driving the magnetic stirrer 4 located inside the immersion cooling system 1 to swing up and down and perform periodic motion.

[0063] When the temperature sensor monitors that the temperature of a device unit 3 does not reach the first-level temperature threshold, the controller 10 sends an acceleration signal to the motor 9 to increase the rotation speed of the motor 9, thereby increasing the swing frequency of the magnet 7.

[0064] By controlling the motor, switching between different temperature modes can be achieved, including secondary heat dissipation and primary heat dissipation of the cooled equipment. By enhancing the heat exchange between the coolant and the cooled equipment, the ability of the thermal management system to operate efficiently is further improved, thereby improving the use efficiency and overall safety of the equipment.

Claims

1. An electromagnetically driven submerged enhanced heat exchange device, characterized in that: It comprises a magnetic stirrer (4), a magnet (7), a controller (10) and a driving device; The magnetic stirrer (4) is distributed between the cooled equipment groups (2) and is movably mounted on a bracket (6); the cooled equipment groups (2) are obtained by grouping equipment units (3) that need to be cooled in the immersion cooling system (1); each equipment unit (3) is immersed in a cooling liquid (5); The magnet (7) is located outside the immersion cooling system (1) and is connected to the driving device, and the direction of the internal magnetic flux lines of the magnet (7) is perpendicular to the direction of the internal magnetic flux lines of the magnetic stirrer (4); The controller (10) is used to control the driving device to drive the magnet (7) to swing back and forth. The magnetic stirrer (4) is within the magnetic force range of one or more magnets (7), and its position and magnetic force are configured to enable it to swing synchronously with the one or more magnets (7) to achieve turbulence on the cooling liquid (5).

2. The electromagnetically driven immersed enhanced heat exchange device according to claim 1 is characterized in that: The equipment units (3) that need to be cooled are grouped in the following manner: The units (3) are grouped into rows and columns, wherein m rows or m columns of units (3) are defined as a cooled device group (2). The magnetic stirrers (4) are distributed between adjacent cooled device groups (2) and between the cooling device groups (2) and the inner wall of the outer shell of the immersion cooling system (1), and the magnetic stirrers (4) are parallel to each other.

3. The electromagnetically driven immersed enhanced heat exchange device according to claim 1 is characterized in that: The magnetic stirrer (4) is movably mounted on the bracket (6) in the following manner: The magnetic stirrer (4) is mounted on the bracket (6) via a rotating assembly, and the rotating axis of the rotating assembly is perpendicular to the direction of the internal magnetic flux lines of the magnetic stirrer (4).

4. The electromagnetically driven immersed enhanced heat exchange device according to claim 1 is characterized in that: The driving device comprises a motor (9); The magnet (7) is directly connected to the transmission shaft (13) of the motor (9), the transmission shaft (13) is perpendicular to the direction of the internal magnetic flux lines of the magnet (7), and the reciprocating swing of the magnet (7) is achieved through the reciprocating rotation of the motor (9); or, The magnet (7) is connected to a swing arm (8), and the swing arm (8) is connected to an eccentric wheel (14) on a transmission shaft (13) of a motor (9). The motor (9) drives the eccentric wheel (14) to rotate, thereby realizing the reciprocating swing of the magnet (7).

5. The electromagnetically driven immersed enhanced heat exchange device according to claim 4 is characterized in that: According to the temperature threshold required for cooling, the frequency of the reciprocating oscillation is adjusted by controlling the rotation speed of the motor (9), and the temperature threshold is set to two levels. When the temperature threshold is the second level, the rotation speed of the motor (9) is N1, and the corresponding frequency of the reciprocating oscillation is F1; when the temperature threshold is the first level, the rotation speed of the motor (9) is N2, and the corresponding frequency of the reciprocating oscillation is F2, N2 = n × N1, n∈(2, 4).

6. The electromagnetically driven immersed enhanced heat exchange device according to claim 4 is characterized in that: When the magnet (7) is directly connected to the transmission shaft (13) of the motor (9), the reciprocating rotation amplitude of the motor (9) is designed to limit the reciprocating swing angle; When the magnet (7) is connected to the swing arm (8), a limit device is provided at the connection to prevent the swing angle from exceeding a preset value.

7. The electromagnetically driven immersed enhanced heat exchange device according to claim 1, characterized in that: A temperature sensor is installed on the surface of the equipment unit (3), and a temperature signal measured by the temperature sensor is transmitted to a controller (10). When the temperature exceeds a threshold value, a driving device of a magnet (7) corresponding to a magnetic stirrer (4) on one side or both sides of a cooled equipment group (2) where the corresponding equipment unit (3) is located is started.

8. The electromagnetically driven immersed enhanced heat exchange device according to claim 1, characterized in that: One end of the magnetic stirrer (4) is an N pole, and the other end is an S pole. Two adjacent magnetic stirrers (4) are arranged in parallel, and the magnetic poles of the two adjacent magnetic stirrers (4) are opposite. The magnet (7) is arranged at the same end of two adjacent magnetic stirrers (4), one end of the magnet (7) is an N pole and the other end is an S pole, and its length and magnetic force are set so that its N pole and the S pole of one of the two adjacent magnetic stirrers (4) are within an attraction range, and its S pole and the N pole of the other of the two adjacent magnetic stirrers (4) are within an attraction range.

9. The electromagnetically driven immersed enhanced heat exchange device according to claim 1 or 8, characterized in that: The magnets (7) are arranged at two ends of the immersion cooling system (1), and the directions of the internal magnetic flux lines are opposite so as to synchronously act on the same magnetic stirrer (4).

10. The electromagnetically driven immersed enhanced heat exchange device according to claim 1, characterized in that: In the non-swinging state, the directions of the internal magnetic flux lines of the magnet (7) and the magnetic stirrer (4) are both horizontal; in the reciprocating swinging state, the angle between the internal magnetic flux lines of the magnet (7) and the horizontal direction is 45°±10°.

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