An electronic transformer with high efficiency heat dissipation

Abstract

The present invention relates to an electronic transformer with high efficiency in heat dissipation, comprising a shell, a magnetic core and a winding coil are arranged inside the shell, and the characteristics are as follows: the magnetic core comprises a first core body and a second core body, the first core body and the second core body are suspended and arranged inside the shell, and the inside of the shell is filled with insulating heat-conducting liquid; a first magnet and a second magnet are respectively fixedly mounted on the inner side walls opposite to the first core body and the second core body, a first iron core and a second iron core are arranged between the first magnet and the second magnet, a first magnetic attraction coil is wound on the first iron core, and a second magnetic attraction coil is wound on the second iron core; a temperature sensor is arranged inside the shell. In the present application, when it is detected that the temperature inside the transformer is too high, the first core body and the second core body are controlled to alternately move away from the central area, so that the ends of the first core body and the second core body can enter the edge area with lower temperature, so that the magnetic core and the winding coil can dissipate heat more directly, quickly and effectively.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to an electronic transformer with high-efficiency heat dissipation. Background Art

[0002] An electronic transformer generally consists of a base plate, a transformer assembly and a housing. The transformer assembly consists of a bracket, a magnetic core and two or more winding coils. The transformer assembly is connected and fixed to the base plate, and the housing covers the outside of the transformer assembly and is connected and fixed to the base plate. Currently, the magnetic cores of electronic transformers on the market are mostly made of materials with high magnetic permeability such as silicon steel, and the winding coils are generally insulated enameled wires.

[0003] Electronic transformers will inevitably generate heat during operation, and the heat is mainly generated by the winding coils and the magnetic core, which will cause the internal temperature of the electronic transformer to rise.

[0004] At present, many electronic transformers on the market still use natural heat dissipation to cool down, and the electronic transformer itself radiates heat to the outside and cools down slowly.

[0005] As the operating power and frequency of electronic transformers become higher and higher, the winding coils and magnetic cores are usually concentrated in the central area of ​​the casing. Traditional natural heat dissipation methods are difficult to effectively and quickly dissipate the heat of the winding coils and magnetic cores, resulting in the central area of ​​the electronic transformer often being at a high temperature for a long time, which needs to be improved. Summary of the invention

[0006] Based on the above description, the present invention provides an electronic transformer with efficient heat dissipation, which can dissipate heat from winding coils and magnetic cores more effectively and quickly, thereby improving the overall heat dissipation performance of the electronic transformer.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] An electronic transformer with high efficiency in heat dissipation comprises a shell, wherein a magnetic core and a winding coil are arranged inside the shell, wherein the magnetic core comprises a first core body and a second core body in a square ring shape, wherein the first core body and the second core body are arranged alternately so that the middle sections of the two groups of core bodies have an overlapping portion, wherein the winding coil surrounds the periphery of the overlapping portion and the winding coil does not contact the first core body and the second core body; wherein pins are arranged outside the shell, and the ends of the winding coil are connected and conducted with the pins; wherein the two ends of the first core body are connected to the two inner walls of the shell through springs respectively, and the two ends of the second core body are connected to the two inner walls of the shell through springs respectively, so that the first core body and the second core body are suspended inside the shell, and the inside of the shell is filled with an insulating heat-conducting liquid; wherein a first magnet and a second magnet are respectively mounted and fixed on the inner side walls opposite to the first core body and the second core body, wherein a connecting block is arranged inside the shell and between the first magnet and the second magnet, wherein the connecting block is fixedly connected to the inner wall of the shell, and a connecting block is arranged on a side of the connecting block facing the first magnet. A first iron core is fixedly installed at the position of the first magnet, a first magnetic coil is wound on the first iron core, a second iron core is fixedly installed at the position corresponding to the second magnet on the side of the connecting block facing the second magnet, and a second magnetic coil is wound on the second iron core; a temperature sensor is arranged inside the shell, and the electronic transformer also includes a controller for controlling the first magnetic coil and the second magnetic coil, and the temperature sensor is electrically connected to the controller; the temperature sensor detects the temperature of the thermal fluid in real time and feeds back the temperature detection result to the controller, the controller compares the temperature detection value Tj with the preset temperature value Ty, when the former is greater than the latter, the controller determines that active heat dissipation needs to be started, at this time, the controller alternately outputs driving current to the first magnetic coil and the second magnetic coil, so that the first core body and the second core body are alternately away from the central area in the shell and reset, and when the temperature value detected by the temperature sensor is less than the preset value, the controller stops outputting driving current to the first magnetic coil and the second magnetic coil.

[0009] As a preferred solution: there are three temperature sensors, namely the first temperature sensor, the second temperature sensor and the third temperature sensor; the first temperature sensor is installed in the central area inside the housing, and the second temperature sensor and the third temperature sensor are respectively installed at both ends inside the housing; the output ends of the first temperature sensor, the second temperature sensor and the third temperature sensor are electrically connected to the controller; during the operation of the electronic transformer, the first temperature sensor detects the temperature inside the housing and feeds back the first temperature detection value Tj1 to the controller, and the second temperature sensor detects the temperature inside the housing and feeds back the second temperature detection value Tj2 to the controller; the third temperature sensor detects the temperature inside the housing and feeds back the third temperature detection value Tj3 to the controller; the controller compares Tj1 with Ty, and when Tj1 is greater than Ty, the controller determines that active heat dissipation needs to be started. When active heat dissipation needs to be started, the controller further compares the magnitudes of Tj1 and Tj2 and calculates the absolute value S of the difference between the two; the corresponding relationship between the S value and the correction coefficient k value is pre-calibrated to obtain the recommended k value for different S value intervals; the formula t' = kt is used to correct the residence time of the first core and the second core at the edge part, where t is the initially default residence time, k is the correction coefficient, and t' is the corrected residence time; when Tj1 < Tj2, when calculating the corrected residence time of the first core at the edge part, first retrieve the corresponding k value according to the S value of the two, and then use this k value to calculate the corrected residence time; when calculating the corrected residence time of the second core at the edge part, directly take k as 1; when Tj1 > Tj2, when calculating the corrected residence time of the first core at the edge part, directly take k as 1; when calculating the residence time of the second core at the edge part, first retrieve the corresponding k value according to the S value of the two, and then use this k value to calculate the corrected residence time; after the corrected residence time of the first core and the second core at the edge part, the controller alternately outputs drive currents of corresponding durations to the first magnetic attraction coil and the second magnetic attraction coil.

[0010] As a preferred solution: guide rods are symmetrically arranged on both sides of the first core and the second core, the guide rods are arranged parallel to the springs, one end of the guide rods is fixedly connected to the inner wall of the housing, and the winding coil is connected and fixed to the other end of the guide rods through a fixing sleeve; sliders are fixed on both sides of the first core and the second core, and the guide rods pass through the sliders so that the sliders can slide back and forth freely along the guide rods.

[0011] As a preferred solution: a stirring piece is fixed on the sliders on both sides of the first core body and the second core body, and the stirring piece extends laterally to the outside of the slider, and a first curved portion and a second curved portion that are curved downward are provided at the ends of the stirring piece, wherein the first curved portion is located above the second curved portion, and the extending length of the first curved portion is greater than that of the second curved portion; there is a spacing between the first curved portion and the second curved portion so that a curved recess is formed below the first curved portion, and a through hole in the up and down directions is provided on the main body of the stirring piece.

[0012] As a preferred solution: radiators are symmetrically arranged on both sides of the end of the shell, and a heat conducting plate is arranged on the inner wall of the end of the shell, the inner side of the heat conducting plate is in contact with the heat conducting liquid in the shell, and the outer side of the heat conducting plate is in contact with the radiator, and the moving range of the agitator is within the coverage area of ​​the heat conducting plate.

[0013] As a preferred solution: the controller includes a main control module, a first drive module, a second drive module and a power supply module; the input end of the first drive module is connected to the control signal output end of the main control module, the drive signal output end of the first drive module is connected to the first magnetic attraction coil, and the first drive module is used to output a DC drive signal to the first magnetic attraction coil; the input end of the second drive module is connected to the control signal output end of the main control module, the drive signal output end of the second drive module is connected to the second magnetic attraction coil, and the second drive module is used to output a DC drive signal to the second magnetic attraction coil; the power supply module is connected to each module for power supply.

[0014] As a preferred solution: the controller also includes an alarm module, which is connected to the control signal output end of the main control module. During the operation of the electronic transformer, when Tj1 is greater than Ty, the main control module starts timing. When the timing reaches a preset time, the main control module sends a control signal to the alarm module, causing the alarm module to send an alarm signal.

[0015] As a preferred solution: the controller further includes a communication module, and the communication module is connected to the transceiver end of the main control module.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: for the electronic transformer, since the winding coils and the magnetic core are concentrated in the central area of ​​the shell, and the heat is mainly generated by the winding coils and the magnetic core, the temperature of the central area will be higher than that of the edge area. Through the above solution, the electronic transformer is changed from the original integral magnetic core to a split and movable first core and second core. When it is detected that the internal temperature of the transformer is too high, the first core and the second core are controlled to alternately move away from the central area, so that the ends of the first core and the second core can enter the edge part with lower temperature, which is more conducive to the rapid heat dissipation of the first core and the second core, and can make the magnetic core and the winding coil dissipate heat more directly, quickly and effectively, prevent the magnetic core and the winding coil from being in a high temperature state for a long time, and better protect the electronic transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the internal structure of the electronic transformer in this embodiment;

[0018] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0019] Figure 3 for Figure 1 A magnified view of part B in FIG.

[0020] Figure 4 Schematic diagram of the control principle in this embodiment.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Shell; 2. First core; 3. Second core; 4. Guide rod; 5. Slider; 6. Winding coil; 7. Pin; 8. Spring; 9. Second temperature sensor; 10. Third temperature sensor; 11. Agitator; 1101. First bending portion; 1102. Notch; 1103. Second bending portion; 1104. Through hole; 12. Heat sink; 13. Heat conducting plate; 14. First magnet; 15. Second magnet; 16. Connecting block; 17. First iron core; 18. First magnetic coil; 19. Second iron core; 20. Second magnetic coil; 21. Fixing sleeve; 22. First temperature sensor. DETAILED DESCRIPTION

[0023] Reference Figure 1 and Figure 2 An electronic transformer with high efficiency in heat dissipation comprises a shell 1, a magnetic core and a winding coil 6 are arranged inside the shell 1, wherein the magnetic core comprises a first core body 2 and a second core body 3 in a square ring shape, the first core body 2 and the second core body 3 are alternately arranged so that the middle sections of the two groups of core bodies have an overlapping part, the winding coil 6 surrounds the periphery of the overlapping part and the winding coil 6 does not contact the first core body 2 and the second core body 3.

[0024] A pin 7 is provided outside the housing 1 , and an end of the winding coil 6 is connected to the pin 7 for conduction.

[0025] The two ends of the first core 2 are connected to the two inner walls of the shell 1 through springs 8, and the two ends of the second core 3 are connected to the two inner walls of the shell 1 through springs 8, so that the first core 2 and the second core 3 are suspended inside the shell 1. The inside of the shell 1 is filled with insulating thermal conductive liquid (not shown in the figure). The shell 1 in this embodiment is made of a high thermal conductive material, such as copper or aluminum.

[0026] Since both ends of the first core 2 and the second core 3 are pulled and supported by the spring 8 , the first core 2 and the second core 3 can move back and forth along their respective ends.

[0027] In order to increase the stability of the first core 2 and the second core 3 when they are moving, in this embodiment, guide rods 4 are symmetrically arranged on both sides of the first core 2 and the second core 3, and the guide rods 4 are arranged parallel to the spring 8. One end of the guide rod 4 is fixedly connected to the inner wall of the housing 1, and the winding coil 6 is connected and fixed to the other end of the guide rod 4 through the fixing sleeve 21. Slide blocks 5 are fixed to both sides of the first core 2 and the second core 3, and the guide rods 4 pass through the slide blocks 5, so that the slide blocks 5 can slide freely back and forth along the guide rods 4.

[0028] Reference Figure 1 and Figure 2 In this embodiment, a first magnet 14 and a second magnet 15 are respectively mounted and fixed on the inner side walls of the first core 2 and the second core 3 that are opposite to each other.

[0029] A connecting block 16 is provided inside the housing 1 and between the first magnet 14 and the second magnet 15, and the connecting block 16 is fixedly connected to the inner wall of the housing 1. A first iron core 17 is fixedly installed on a surface of the connecting block 16 facing the first magnet 14 at a position corresponding to the first magnet 14, and a first magnetic attraction coil 18 is wound around the first iron core 17. A second iron core 19 is fixedly installed on a surface of the connecting block 16 facing the second magnet 15 at a position corresponding to the second magnet 15, and a second magnetic attraction coil 20 is wound around the second iron core 19.

[0030] By passing direct current through the first magnetic coil 18, the first iron core 17 and the first magnet 14 can be attracted to each other. The magnetic attraction force can drive the first core 2 to move outward. During this process, the springs 8 connected at both ends of the first core 2 are deformed accordingly. When the direct current is removed, the elastic force of the springs 8 drives the first core 2 to reset.

[0031] Similarly, by passing direct current through the second magnetic coil 20, the second iron core 19 and the second magnet 15 can be attracted to each other, and the magnetic attraction force can drive the second core 3 to move outward. During this process, the springs 8 connected at both ends of the second core 3 are deformed accordingly. When the direct current is removed, the elastic force of the spring 8 drives the second core 3 to reset.

[0032] The electronic transformer in this embodiment further includes a controller for controlling the first magnetic attraction coil 18 and the second magnetic attraction coil 20 .

[0033] The controller includes a main control module, a first drive module, a second drive module and a power supply module.

[0034] The input end of the first driving module is connected to the control signal output end of the main control module, the drive signal output end of the first driving module is connected to the first magnetic attraction coil 18, and the first driving module is used to output a DC drive signal to the first magnetic attraction coil 18; the input end of the second driving module is connected to the control signal output end of the main control module, the drive signal output end of the second driving module is connected to the second magnetic attraction coil 20, and the second driving module is used to output a DC drive signal to the second magnetic attraction coil 20.

[0035] The power module is connected to each module for power supply. The power module can obtain AC power from the winding coil 6, and then output DC regulated power after rectification and voltage stabilization.

[0036] In this embodiment, a temperature sensor is further installed in the housing 1, and the output end of the temperature sensor is connected to the sampling signal input end of the main control module.

[0037] The heat dissipation principle of the electronic transformer is:

[0038] During the operation of the electronic transformer, the winding coil 6 and the first core body 2 and the second core body 3 of the magnetic core generate a large amount of heat, which increases the temperature of the heat transfer fluid inside the housing 1. The temperature sensor detects the temperature of the heat transfer fluid in real time and feeds back the temperature detection result to the main control module. The main control module compares the temperature detection value Tj with the preset temperature value Ty. When the former is greater than the latter, the main control module determines that active heat dissipation needs to be started. At this time, the main control module alternately controls the first drive module and the second drive module to output drive current to the first magnetic attraction coil 18 and the second magnetic attraction coil 20, so that the first core body 2 and the second core body 3 are alternately away from the central area in the housing 1 and reset. That is, the main control module first sends a control signal to the first drive module, so that the first drive module outputs direct current to the first magnetic attraction coil 18, and the first iron core 17 generates magnetic force, which repel each other with the first magnet 14, so that the first core 2 starts to move outward, that is, away from the central area in the shell 1; after a period of time (this time is defined as the time when the first core 2 stays at the edge), the main control module controls the first drive module to stop outputting the drive current and at the same time controls the second drive module to start outputting rectified power to the second magnetic attraction coil 20. At this time, the repulsive force of the first iron core 17 on the first magnet 14 disappears, and the spring 8 starts to drive the first core 2 to move to the central area in the shell 1 until it is reset; at the same time, the second iron core 19 generates magnetic force, which repel each other with the second magnet 15, so that the second core 3 starts to move outward, that is, away from the central area in the shell 1; after a period of time (this time is defined as the time when the second core 3 stays at the edge), the main control module controls the first drive module to output direct current again and controls the second drive module to stop outputting direct current, so that the first core 2 moves outward again and the second core 3 is reset. When the temperature value detected by the temperature sensor is less than the preset value, the main control module stops outputting control signals to the first drive module and the second drive module, the first magnetic coil 18 and the second magnetic coil 20 are both de-energized, and the electronic transformer returns to the initial state.

[0039] In a default state, the stay time of the first core 2 and the second core 3 is the same.

[0040] Since the winding coil 6 and the magnetic core are concentrated in the central area of ​​the housing 1, and the heat is mainly generated by the winding coil 6 and the magnetic core, the temperature of the central area will be higher than that of the edge area. Through the above scheme, the electronic transformer is changed from the original integral magnetic core to a split and movable first core 2 and second core 3. When it is detected that the internal temperature of the transformer is too high, the first core 2 and the second core 3 are controlled to alternately move away from the central area, so that the ends of the first core 2 and the second core 3 can enter the edge part with lower temperature, which is more conducive to the rapid heat dissipation of the first core 2 and the second core 3, and can make the magnetic core and the winding coil 6 dissipate heat more directly, quickly and effectively, prevent the magnetic core and the winding coil 6 from being in a high temperature state for a long time, and better protect the electronic transformer.

[0041] This embodiment can also be optimized and improved as follows:

[0042] Reference Figure 1 , Figure 2 and Figure 4 In this embodiment, there are three groups of temperature sensors, namely, a first temperature sensor 22, a second temperature sensor 9 and a third temperature sensor 10. The first temperature sensor 22 is installed in the central area of ​​the housing 1, and the second temperature sensor 9 and the third temperature sensor 10 are installed at two ends of the housing 1 respectively; the output ends of the first temperature sensor 22, the second temperature sensor 9 and the third temperature sensor 10 are connected to the sampling signal input end of the main control module.

[0043] During the operation of the electronic transformer, the first temperature sensor 22 detects the temperature inside the housing 1 and feeds back the first temperature detection value Tj1 to the main control module, the second temperature sensor 9 detects the temperature inside the housing 1 and feeds back the second temperature detection value Tj2 to the main control module; the third temperature sensor 10 detects the temperature inside the housing 1 and feeds back the third temperature detection value Tj3 to the main control module; the main control module compares Tj1 with Ty, and when Tj1 is greater than Ty, the main control module determines that active heat dissipation needs to be started. When active heat dissipation needs to be started, the main control module further compares the size of Tj1 and Tj2 and calculates the absolute value S of the difference between the two, that is, S= |Tj1-Tj2|.

[0044] In this embodiment, the correction coefficient is defined as k, so that the corresponding relationship between the S value and the k value is calibrated through actual experiments or simulation experiments to obtain the recommended k values ​​for different S value intervals.

[0045] For example, when the S value falls within the interval [S1, S2], the corresponding correction coefficient is k1; when the S value falls within the interval [S2, S3], the corresponding correction coefficient is k2; when the S value falls within the interval [S3, S4], the corresponding correction coefficient is k3... and so on.

[0046] After the main control module compares the magnitudes of Tj1 and Tj2 and calculates the absolute value S of the difference between the two, it is also necessary to correct the residence time of the first core 2 and the second core 3 at the edge portion.

[0047] The correction calculation formula is t' = kt, where t is the initially default residence time and t' is the corrected residence time. When Tj1 < Tj2, when calculating the corrected residence time of the first core 2 at the edge portion, first retrieve the corresponding k value according to the S value of the two, and then use this k value to calculate the corrected time; when calculating the corrected residence time of the second core 3 at the edge portion, directly set k to 1. That is, the residence time of the second core 3 at the edge portion each time is the default time, while the residence time of the first core 2 at the edge portion is the corrected time. Because at this time the temperature of the end portion of the heat-conducting liquid corresponding to the first core 2 in the housing 1 is lower, keeping the first core 2 at this edge portion for a longer time is more conducive to dissipating the heat of the magnetic core and the winding coil 6.

[0048] When Tj1 > Tj2, when calculating the corrected residence time of the first core 2 at the edge portion, directly set k to 1; when calculating the residence time of the second core 3 at the edge portion, first retrieve the corresponding k value according to the S value of the two, and then use this k value to calculate the corrected time. That is, the residence time of the first core 2 at the edge portion each time is the default time, while the residence time of the second core 3 at the edge portion is the corrected time. Because at this time the temperature of the end portion of the heat-conducting liquid corresponding to the second core 3 in the housing 1 is lower, keeping the second core 3 at this edge portion for a longer time is more conducive to dissipating the heat of the magnetic core and the winding coil 6.

[0049] The residence time is the duration for which the main control module outputs a driving current to the driving module. After calculating the corrected residence times of the two groups of cores, the main control module alternately controls the first driving module and the second driving module to output DC driving signals of corresponding durations to the first magnetic attraction coil 18 and the second magnetic attraction coil 20.

[0050] Refer to Figure 1 and Figure 3 , in this embodiment, stirring members 11 are fixedly arranged on the sliders 5 on both sides of the first core 2 and the second core 3. As Figure 3As shown, the stirring member 11 extends horizontally to the outside of the slider 5, and a first curved portion 1101 and a second curved portion 1103 are provided at the end of the stirring member 11, wherein the first curved portion is located above the second curved portion 1103 and the length of the first curved portion 1101 extending outward is greater than the second curved portion 1103; there is a spacing between the first curved portion 1101 and the second curved portion 1103 so that a curved curved recess 1102 is formed below the first curved portion 1101, and a through hole 1104 in the up-and-down direction is provided on the main body of the stirring member 11. In addition, a radiator 12 is symmetrically provided on both sides of the end of the housing 1, and a heat conducting plate 13 is provided on the inner wall of the end of the housing 1, the inner side of the heat conducting plate 13 contacts the heat conducting liquid in the housing 1, and the outer side of the heat conducting plate 13 contacts the radiator 12, so that the heat of the heat conducting liquid can be directly transferred to the heat conducting plate 13, and then transferred to the radiator 12 by the heat conducting plate 13, so as to improve the heat dissipation efficiency. The heat conducting plate 13 and the heat sink 12 have relatively high thermal conductivity.

[0051] The moving range of the stirring member 11 is within the coverage area of ​​the heat conducting plate 13 .

[0052] like Figure 3 As shown by the dotted arrow, when the core moves toward the edge, the slider 5 drives the stirring member 11 to move upward, and the heat transfer liquid flows downward relative to the stirring member 11. The heat transfer liquid first contacts the first curved portion 1101. When passing through the end of the first curved portion 1101, the heat transfer liquid is divided into two paths, one path continues to flow downward, and the other path forms a vortex at the notch 1102. After the vortex is accelerated, it passes through the second curved portion 1103. When the heat transfer liquid passes through the end of the second curved portion 1103, a vortex is formed again and accelerated. Finally, after acceleration, a part of the heat transfer liquid flows from bottom to top through the through hole 1104 and returns to the top of the stirring member 11. That is, the stirring member 11 can make part of the heat transfer liquid circulate and accelerate its flow rate, so that the heat transfer liquid and the heat conducting plate 13 can achieve better heat conduction efficiency, and the heat transfer liquid in different parts can be stirred and mixed, so that the temperature of the heat transfer liquid at the inner end of the housing 1 is more uniform, and the overall heat dissipation performance of the electronic transformer is further improved.

[0053] The controller in this embodiment also includes an alarm module, which is connected to the control signal output terminal of the main control module. When Tj1 is greater than Ty during the operation of the electronic transformer, the main control module starts timing, and when the timing reaches a preset time, the main control module sends a control signal to the alarm module, so that the alarm module sends an alarm signal. The alarm in this embodiment is a buzzer.

[0054] The controller in this embodiment further includes a communication module, which is connected to the transceiver of the main control module. The communication module is used for communication and data transmission between the main control module and external devices, so as to remotely monitor the working status of the electronic transformer.

[0055] The communication module in this embodiment is a Bluetooth module or a WIFI module.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic transformer with high efficiency heat dissipation, comprising a housing, a magnetic core and a winding coil arranged inside the housing, characterized in that: The magnetic core comprises a first core body and a second core body in a square ring shape, the first core body and the second core body are staggered so that the middle sections of the two groups of core bodies have an overlapping part, the winding coil is surrounded by the periphery of the overlapping part and the winding coil is not in contact with the first core body and the second core body; a pin is arranged on the outside of the shell, and the end of the winding coil is connected to the pin for conduction; the two ends of the first core body are connected to the two inner walls of the shell through springs respectively, and the two ends of the second core body are connected to the two inner walls of the shell through springs respectively, so that the first core body and the second core body are suspended inside the shell, and the inside of the shell is filled with insulating thermal conductive liquid; the first magnet and the second magnet are respectively installed and fixed on the opposite inner side walls of the first core body and the second core body, and a connecting block is arranged inside the shell and between the first magnet and the second magnet, and the connecting block is fixedly connected to the inner wall of the shell, and the first iron is installed and fixed on the side of the connecting block facing the first magnet at the position corresponding to the first magnet The electronic transformer comprises a core, a first magnetic coil is wound on the first core, a second core is fixedly installed on a surface of the connecting block facing the second magnet at a position corresponding to the second magnet, and a second magnetic coil is wound on the second core; a temperature sensor is arranged inside the shell, and the electronic transformer also comprises a controller for controlling the first magnetic coil and the second magnetic coil, and the temperature sensor is electrically connected to the controller; the temperature sensor detects the temperature of the thermal fluid in real time and feeds back the temperature detection result to the controller, and the controller compares the temperature detection value Tj with the preset temperature value Ty, and when the former is greater than the latter, the controller determines that active heat dissipation needs to be started, and at this time, the controller alternately outputs driving current to the first magnetic coil and the second magnetic coil, so that the first core body and the second core body are alternately away from the central area in the shell and reset, and when the temperature value detected by the temperature sensor is less than the preset value, the controller stops outputting driving current to the first magnetic coil and the second magnetic coil.

2. The electronic transformer with high efficiency heat dissipation according to claim 1 is characterized in that: The temperature sensors are divided into three groups, namely a first temperature sensor, a second temperature sensor and a third temperature sensor; The first temperature sensor is installed in the central area of ​​the shell, and the second temperature sensor and the third temperature sensor are installed at both ends of the shell respectively; the output ends of the first temperature sensor, the second temperature sensor and the third temperature sensor are electrically connected to the controller; during the operation of the electronic transformer, the first temperature sensor detects the temperature in the shell and feeds back a first temperature detection value Tj1 to the controller, the second temperature sensor detects the temperature in the shell and feeds back a second temperature detection value Tj2 to the controller; the third temperature sensor detects the temperature in the shell and feeds back a third temperature detection value Tj3 to the controller; the controller compares Tj1 with Ty, and when Tj1 is greater than Ty, the controller determines that active heat dissipation needs to be started, and when active heat dissipation needs to be started, the controller further compares the sizes of Tj1 and Tj2 and calculates the absolute value S of the difference between the two; Pre-calibrate the corresponding relationship between the S value and the correction coefficient k value to obtain the recommended k values for different S value intervals; use the formula t' = kt to correct the residence time of the first core body and the second core body at the edge part, where t is the initially default residence time, k is the correction coefficient, and t' is the corrected residence time. When Tj1 < Tj2, when calculating the corrected residence time of the first core body at the edge part, first retrieve the corresponding k value according to the S values of the two, and then use this k value to calculate the corrected residence time; when calculating the corrected residence time of the second core body at the edge part, directly take k as 1; when Tj1 > Tj2, when calculating the corrected residence time of the first core body at the edge part, directly take k as 1; when calculating the residence time of the second core body at the edge part, first retrieve the corresponding k value according to the S values of the two, and then use this k value to calculate the corrected residence time; after the corrected residence time of the first core body and the second core body at the edge part, the controller alternately outputs drive currents of corresponding durations to the first magnetic attraction coil and the second magnetic attraction coil.

3. The electronic transformer with high efficiency heat dissipation according to claim 1 is characterized in that: Guide rods are symmetrically arranged on both sides of the first core body and the second core body. The guide rods are arranged parallel to the springs. One end of the guide rod is fixedly connected to the inner wall of the housing, and the winding coil is connected and fixed to the other end of the guide rod through a fixing sleeve; sliders are fixed on both sides of the first core body and the second core body, and the guide rod passes through the sliders so that the sliders can slide back and forth freely along the guide rod.

4. The electronic transformer with high efficiency heat dissipation according to claim 3 is characterized in that: Stirring members are fixed on the sliders on both sides of the first core body and the second core body. The stirring members extend horizontally to the outside of the sliders. At the end of the stirring member, a first bending portion and a second bending portion that are curved and bent downward are provided. The first bending portion is located above the second bending portion, and the extending length of the first bending portion is greater than that of the second bending portion; there is a spacing between the first bending portion and the second bending portion so that a curved notch is formed below the first bending portion, and through holes in the up and down directions are provided on the main body of the stirring member.

5. The electronic transformer with high efficiency heat dissipation according to claim 4 is characterized in that: Radiators are symmetrically arranged on both sides of the end of the housing. A heat conducting plate is arranged on the inner wall of the end of the housing. The inner side of the heat conducting plate is in contact with the heat conducting liquid in the housing, and the outer side of the heat conducting plate is in contact with the radiator. The moving range of the stirring member is within the coverage area of the heat conducting plate.

6. The electronic transformer with high efficiency heat dissipation according to claim 1 is characterized in that: The controller includes a main control module, a first driving module, a second driving module, and a power supply module; the input end of the first driving module is connected to the control signal output end of the main control module, and the driving signal output end of the first driving module is connected to the first magnetic attraction coil. The first driving module is used to output a DC driving signal to the first magnetic attraction coil. The input end of the second driving module is connected to the control signal output end of the main control module, and the driving signal output end of the second driving module is connected to the second magnetic attraction coil. The second driving module is used to output a DC driving signal to the second magnetic attraction coil. The power supply module is connected to each module for power supply.

7. The electronic transformer with high efficiency heat dissipation according to claim 6 is characterized in that: The controller also includes an alarm module, which is connected to the control signal output end of the main control module. During the operation of the electronic transformer, when Tj1 is greater than Ty, the main control module starts timing. When the timing reaches a preset time, the main control module sends a control signal to the alarm module, causing the alarm module to send an alarm signal.

8. The electronic transformer with high efficiency heat dissipation according to claim 6 is characterized in that: The controller also includes a communication module, and the communication module is connected to the transceiver end of the main control module.

Images