A high frequency transformer

Abstract

The present invention relates to the technical field of transformers, and discloses a high-frequency transformer, including a transformer body and a heat dissipation mechanism, wherein the heat dissipation mechanism includes an air-cooling heat dissipation fan and a cooling pipeline, wherein the air-cooling heat dissipation fan is configured to provide forced air cooling heat dissipation for the transformer body when the temperature of the transformer body reaches a first temperature threshold; the cooling pipeline includes a cooling pipe wound around the outer periphery of the transformer body, and the liquid inlet of the cooling pipe is configured to receive coolant when the temperature of the transformer body reaches a second temperature threshold, thereby providing water cooling heat dissipation for the transformer body. The present invention provides a heat dissipation mechanism capable of providing two heat dissipation modes, namely forced air cooling heat dissipation and water cooling heat dissipation, and can select a reasonable heat dissipation mode according to the workload of the transformer body to dissipate the heat, and on the basis of ensuring good heat dissipation effect of the transformer body under different workloads, the heat dissipation cost required for heat dissipation of the transformer body can be reduced as much as possible, and reasonable use of resources is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a high-frequency transformer. Background Art

[0002] The contents in this section merely provide background information related to the present invention and may not constitute prior art.

[0003] As a highly controllable substation equipment, power electronic transformers can provide multiple AC and DC ports and are key equipment for flexible access to AC and DC sources and loads. High-frequency transformers, as an indispensable core component of power electronic transformers, play a key role in electrical isolation, voltage conversion, power transmission, etc. With the development of power electronic transformers, research on high-frequency transformers has gradually shifted to high voltage and large capacity, and the accompanying heat dissipation problem has become more and more serious.

[0004] Generally speaking, the heat generated by a high-frequency transformer during operation mainly comes from the loss of the iron core and windings. The greater the workload of the high-frequency transformer, the more heat it generates during operation, which causes the temperature of the high-frequency transformer to rise sharply, affecting the normal working performance of the high-frequency transformer and may even cause damage to related components of the high-frequency transformer. Therefore, it is particularly important to dissipate heat for a high-frequency transformer in operation. Summary of the invention

[0005] The inventors of the present application have found that the known heat dissipation methods of high-frequency transformers generally include natural air cooling, forced air cooling and water cooling, and a high-frequency transformer will often only choose one of the heat dissipation methods for heat dissipation according to its own workload. Among them, natural air cooling refers to the method of heat exchange between the high-frequency transformer and the air in the surrounding environment to achieve heat dissipation. This method is generally only applicable to high-frequency transformers working under low workloads, and no additional heat dissipation costs (that is, the operating costs required for heat dissipation) are required. Forced air cooling is a method of using a cooling fan to force the air around the high-frequency transformer to flow quickly to take away the heat generated by the high-frequency transformer. Although this method has a better heat dissipation effect than natural air cooling, this method is greatly affected by the ambient temperature. It is generally only applicable to high-frequency transformers working under medium workloads and in low ambient temperatures, and requires a smaller heat dissipation cost. Water cooling is a method of dissipating heat from a high-frequency transformer by arranging cooling pipes on the transformer. This method is not affected by the surrounding environment and is therefore suitable for high-frequency transformers operating under high workloads. However, this method requires the use of an additional coolant circulation system to reduce the temperature of the used coolant during the heat dissipation process, which results in a higher heat dissipation cost.

[0006] The inventor of the present application further discovered that, with the continuous development of high-frequency transformer technology, the workload of high-frequency transformers during operation may change with the use requirements. On this basis, if only one heat dissipation method is provided for high-frequency transformers, it may lead to poor heat dissipation effect or excessive heat dissipation cost. For example, if only forced air cooling is provided for high-frequency transformers, it will not achieve good heat dissipation effect when the high-frequency transformer is under high workload. If only water cooling is provided for high-frequency transformers, when the high-frequency transformer is under medium workload, water cooling will generate high heat dissipation cost, and it will not achieve reasonable use of resources.

[0007] In view of this, the purpose of the present invention is to provide a high-frequency transformer, in the hope of selecting a reasonable heat dissipation method to dissipate heat according to the working load of the high-frequency transformer, while ensuring that the heat dissipation effect of the high-frequency transformer under different working loads is good, and reducing the heat dissipation cost required for dissipating heat for the high-frequency transformer as much as possible.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] The invention discloses a high-frequency transformer, comprising:

[0010] The transformer body has different temperatures under different working loads;

[0011] A heat dissipation mechanism, including an air-cooled heat dissipation fan and a cooling pipeline;

[0012] The output end of the air-cooling heat dissipation fan is aligned with one side of the transformer body, and the air-cooling heat dissipation fan is configured to provide forced air cooling and heat dissipation for the transformer body when the temperature of the transformer body reaches a first temperature threshold;

[0013] The cooling pipeline includes a cooling pipe having a liquid inlet and a liquid discharge port, wherein the cooling pipe is arranged around the outer circumference of the transformer body and is arranged closely to the outer wall of the transformer body; the liquid inlet is configured to receive coolant when the temperature of the transformer body reaches a second temperature threshold, thereby providing water cooling for the transformer body; the liquid discharge port is configured to discharge the coolant flowing through the cooling pipe; wherein the second temperature threshold is greater than the first temperature threshold.

[0014] Furthermore, the heat dissipation mechanism also includes a coolant circulation unit, and the coolant circulation unit includes:

[0015] A storage tank, suitable for storing coolant;

[0016] a pumping component configured to selectively obtain the coolant stored in the storage tank and provide the obtained coolant to the liquid inlet;

[0017] A heat dissipation radiator having an inlet and an outlet; the inlet of the heat dissipation radiator is connected to the drain port, and the outlet of the heat dissipation radiator is connected to the storage box;

[0018] A radiator cooling fan, wherein the output end of the radiator cooling fan is aligned with the radiator.

[0019] Furthermore, the high-frequency transformer also includes a control component, and the control component includes:

[0020] A trigger component having a trigger portion, wherein the trigger component is configured to enable the trigger portion to reciprocate in sequence between an initial position, a first trigger position, and a second trigger position under the temperature excitation of the transformer body; wherein when the temperature of the transformer body is lower than the first temperature threshold, the trigger portion is in the initial position, when the temperature of the transformer body reaches the first temperature threshold, the trigger portion is in the first trigger position, and when the temperature of the transformer body reaches the second temperature threshold, the trigger portion is in the second trigger position;

[0021] The first signal generating component and the second signal generating component are both arranged on the moving path of the triggering part;

[0022] The first signal generating component is communicatively connected to the air-cooling heat dissipation fan; the first signal generating component is adapted to be triggered by the triggering portion in the first triggering position and the second triggering position to send a first control signal to the air-cooling heat dissipation fan;

[0023] The second signal generating component is communicatively connected to the pumping component; the second signal generating component is adapted to be triggered by the triggering portion in the second triggering position to send a second control signal to the pumping component.

[0024] Furthermore, the trigger component includes:

[0025] A cylinder body is arranged close to the outer circumference of the transformer body; an active cavity is defined inside the cylinder body;

[0026] A moving part, which is arranged in the movable cavity and can slide freely in the height direction;

[0027] a first memory spring and a second memory spring, wherein one end of the first memory spring is fixedly connected to the inner top wall of the movable cavity, the other end of the first memory spring is fixedly connected to one end of the second memory spring after extending in the height direction, and the other end of the second memory spring is fixedly connected to the moving part after extending in the height direction; the deformation temperature of the first memory spring is equal to the first temperature threshold, and the deformation temperature of the second memory spring is equal to the second temperature threshold;

[0028] The triggering part is located below the moving part and connected to the moving part, and the first signal generating component and the second signal generating component are sequentially arranged on a moving path of the triggering part from bottom to top along a height direction.

[0029] Furthermore, the cylinder body is arranged on the outer wall of the transformer body on a side away from the air-cooling heat dissipation fan, the cylinder body is made of heat-conducting material, and an opening is arranged on a side of the cylinder body facing the transformer body.

[0030] Furthermore, it also includes a substrate, and the transformer body and the air-cooling heat dissipation fan are both arranged on the substrate;

[0031] The coolant circulation unit further comprises a mounting plate, wherein the mounting plate is fixedly disposed below the base plate, and a gap is provided between the mounting plate and the base plate;

[0032] The storage box, the heat dissipation radiator and the heat dissipation fan are all arranged on the mounting plate and located in the gap.

[0033] Furthermore, the substrate is made of heat insulating material.

[0034] Furthermore, the cooling pipe comprises a plurality of cooling branches arranged in sequence along the height direction of the transformer body; the cooling branches extend horizontally around the outer circumference of the transformer body and then close, and opposite sides of the cooling branches are respectively provided with a liquid inlet channel and a liquid outlet channel;

[0035] In two adjacent cooling branches, the liquid inlet flow channels and the liquid outlet flow channels of the two cooling branches are arranged at opposite positions, and the liquid outlet flow channel of the upper cooling branch is connected to the liquid inlet flow channel of the lower cooling branch;

[0036] Among them, the liquid inlet channel of the cooling branch pipe located at the top serves as the liquid inlet, and the liquid outlet channel of the cooling branch pipe located at the bottom serves as the liquid outlet.

[0037] Furthermore, the longitudinal cross-section of the internal flow path of the cooling branch pipe is in the shape of a long waist; and the material of the cooling branch pipe is aluminum.

[0038] Furthermore, the transformer body includes a bottom plate and a top plate located above the bottom plate, two mirror-symmetrical E-shaped iron cores are arranged between the bottom plate and the top plate, a frame is fixedly sleeved on the outer periphery of the central columns of the two E-shaped iron cores, a primary winding is wound around the outer periphery of the frame, and a secondary winding is wound around the outer periphery of the primary winding;

[0039] The cooling circuit also includes a liquid inlet pipe, which is configured to provide cooling liquid to the liquid inlet when the temperature of the transformer body reaches the second temperature threshold. The liquid inlet pipe is arranged on the left side of the transformer body and is connected to the top plate and the bottom plate at the same time.

[0040] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0041] The high-frequency transformer disclosed in the present invention is provided with a heat dissipation mechanism capable of providing two heat dissipation modes of forced air cooling and water cooling. When the transformer body works under a low workload so that its own temperature does not reach a first temperature threshold, the transformer body dissipates heat through natural air cooling; when the transformer body works under a medium workload so that its own temperature reaches a first temperature threshold but is lower than a second temperature threshold, the air cooling fan works to perform forced air cooling and heat dissipation on the transformer body; when the transformer body works under a high workload so that its own temperature reaches or exceeds the second temperature threshold, the air cooling fan and the cooling pipeline work simultaneously to perform combined heat dissipation of forced air cooling and water cooling on the transformer body. In this way, a reasonable heat dissipation mode is selected according to the workload of the transformer body to dissipate heat, and on the basis of ensuring that the heat dissipation effect of the transformer body under different workloads is good, the heat dissipation cost required for heat dissipation of the transformer body is reduced as much as possible, and reasonable use of resources is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the structure of a high-frequency transformer provided by an embodiment of the present invention;

[0043] Figure 2 for Figure 1 A top view of the high frequency transformer shown in FIG.

[0044] Figure 3 for Figure 2 Sectional view along AA direction;

[0045] Figure 4 A schematic diagram of the structure of a transformer body provided by an embodiment of the present invention;

[0046] Figure 5 A schematic diagram of the partial structure of a cooling pipeline and a coolant circulation unit provided in an embodiment of the present invention;

[0047] Figure 6 for Figure 3 A magnified view of the local structure at B in the middle;

[0048] Figure 7 A schematic diagram of the structure of a control component provided by an embodiment of the present invention;

[0049] Figure 8 for Figure 7 FIG. 1 is a schematic diagram of the structure of the control component in a cross-sectional view.

[0050] Icons: 10-base plate, 20-transformer body, 21-bottom plate, 22-top plate, 23-E-type iron core, 24-frame, 25-primary winding, 26-secondary winding, 27-insulation layer, 30-heat dissipation mechanism, 31-air-cooled cooling fan, 32-cooling pipeline, 321-cooling pipe, 3211-cooling branch pipe, 3212-liquid inlet channel, 3213-liquid outlet channel, 322-liquid inlet pipe, 323-liquid discharge pipe, 33-cooling liquid circulation unit Element, 331-mounting plate, 332-storage box, 333-pumping component, 334-heat dissipation radiator, 335-heat dissipation fan, 336-connecting column, 40-control component, 41-trigger component, 411-trigger part, 412-cylinder body, 4121-active cavity, 4122-slide groove, 413-moving part, 414-first memory spring, 415-second memory spring, 42-first signal generating component, 43-second signal generating component. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with specific implementation methods below. The same figure marks in the accompanying drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0053] Example 1

[0054] Embodiment 1 of the present invention discloses a high-frequency transformer, and in particular, a high-frequency transformer capable of selecting a reasonable heat dissipation method for heat dissipation according to its own workload.

[0055] like Figure 1 As shown in FIG. 1 , it shows the appearance of an exemplary high-frequency transformer disclosed in an embodiment of the present invention. Figure 1 In the high-frequency transformer shown, the high-frequency transformer may include a substrate 10 , a transformer body 20 and a heat dissipation mechanism 30 .

[0056] In this embodiment, the substrate 10 is mainly used to provide a carrier for installing components such as the transformer body 20 and the heat dissipation mechanism 30 , and the substrate 10 may have a substantially rectangular shape.

[0057] The transformer body 20 is disposed on the substrate 10, for example, on the top of the substrate 10. The transformer body 20 is used to provide the functions of high-frequency transformers known in the prior art, such as voltage conversion and current transmission, and the transformer body 20 has different temperatures when working under different workloads.

[0058] Specifically, Figure 3 and Figure 4 As shown, the transformer body 20 may include a bottom plate 21 and a top plate 22 located above the bottom plate 21. Two mirror-symmetrical E-shaped iron cores 23 are arranged between the bottom plate 21 and the top plate 22. The E-shaped iron core 23 located above can be fixed to the top plate 22, and the E-shaped iron core 23 located below can be fixed to the bottom plate 21. A skeleton 24 is fixedly sleeved on the outer periphery of the central column of the two E-shaped iron cores 23, a primary winding 25 is wound around the outer periphery of the skeleton 24, a secondary winding 26 is wound around the outer periphery of the primary winding 25, and an insulating layer 27 made of insulating material can be laid between the primary winding 25 and the secondary winding 26 to achieve insulation between the primary winding 25 and the secondary winding 26. The bottom plate 21 can be fixedly connected to the top of the substrate 10 by a bracket to achieve fixing the entire transformer body 20 on the substrate 10. At this time, from Figure 2 From the top view shown, the transformer body 20 has a substantially cross shape.

[0059] It is understandable that, based on the present embodiment, the structure of the transformer body 20 is not improved, so the specific structure and working principle of the transformer body 20 can refer to the structure described in the high-frequency transformer known in the prior art, and no further details are given here.

[0060] In this embodiment, the heat dissipation mechanism 30 is used to dissipate heat from the transformer body 20 in working state, especially when working under medium or high working load. In addition, the heat dissipation mechanism 30 provides two heat dissipation modes, namely, forced air cooling and water cooling, so that a reasonable heat dissipation mode can be selected according to the working load of the transformer body 20 to dissipate heat from the transformer body 20.

[0061] Specifically, the heat dissipation mechanism 30 may include an air-cooled heat dissipation fan 31 and a cooling pipeline 32 .

[0062] Combination Figure 1 and Figure 2As shown in the content, the air-cooling heat dissipation fan 31 can be fixedly arranged on the substrate 10 located next to the transformer body 20, and the output end of the air-cooling heat dissipation fan 31 is aligned with one side of the transformer body 20, such as the rear side, so that the air-cooling heat dissipation fan 31 can form an air flow that flows rapidly in the direction of the transformer body 20. When the air flow reaches the rear side of the transformer body 20, the air flow can take away the heat on the rear side of the transformer body 20. At the same time, part of the air flow can pass through the gaps on the transformer body 20, such as between the winding and the iron core, and then flow away from the front side of the transformer body 20, so as to take away as much heat as possible from the inside of the transformer body 20.

[0063] It can be understood that the rear side described in this embodiment may refer to the Figure 1 or Figure 2 In the state shown, the transformer body 20 faces the side of the air-cooling heat dissipation fan 31 , and the front side refers to the side opposite to the rear side.

[0064] Furthermore, in order to achieve rational utilization of resources, the air-cooling heat dissipation fan 31 is further configured to provide forced air cooling and heat dissipation for the transformer body 20 when the temperature of the transformer body 20 reaches a first temperature threshold. The first temperature threshold may be the temperature reached by the transformer body 20 when it works under a medium workload. In other words, only when the workload of the transformer body 20 is at a medium workload, causing its own temperature to reach the first temperature threshold, the air-cooling heat dissipation fan 31 works to perform forced air cooling and heat dissipation on the transformer body 20. Prior to this, that is, when the workload of the transformer body 20 is at a low workload, when the temperature of the transformer body 20 does not reach the first temperature threshold, the air-cooling heat dissipation fan 31 does not work, and at this time, the transformer body 20 dissipates heat by natural air cooling.

[0065] Combination Figure 1 and Figure 3 As shown, the cooling circuit 32 for providing water cooling may include a cooling pipe 321, a liquid inlet pipe 322 and a liquid discharge pipe 323. The cooling pipe 321 has a liquid inlet and a liquid discharge port located below the liquid inlet, and the cooling pipe 321 is wound around the outer periphery of the transformer body 20 and is arranged close to the outer wall of the transformer body 20, and may be specifically wound around the two E-type cores 23 and the outer periphery of the secondary winding 26.

[0066] The liquid inlet pipe 322 can provide low-temperature coolant such as deionized water, and the liquid inlet pipe 322 is connected to the liquid inlet of the cooling pipe 321 to receive the coolant from the liquid inlet pipe 322 through the liquid inlet. The coolant entering the cooling pipe 321 will be discharged from the liquid outlet of the cooling pipe 321 after flowing through the cooling pipe 321. In this process, the coolant can exchange heat with the transformer body 20, thereby realizing water cooling of the transformer body 20. The liquid outlet pipe 323 is connected to the liquid outlet of the cooling pipe 321 to discharge the used coolant through the liquid outlet pipe 323.

[0067] Furthermore, in order to achieve rational utilization of resources, the liquid inlet on the cooling pipe 321 is configured to receive the coolant from the liquid inlet pipe 322 when the temperature of the transformer body 20 reaches the second temperature threshold, thereby providing water cooling for the transformer body 20. The second temperature threshold is greater than the first temperature threshold, and the second temperature threshold may be the temperature reached by the transformer body 20 when working under a high workload. In other words, only when the workload of the transformer body 20 is at a high workload, and the working air-cooled heat dissipation fan 31 alone cannot further suppress the growth of the temperature of the transformer body 20, so that the temperature of the transformer body 20 reaches or exceeds the second temperature threshold, the liquid inlet of the cooling pipe 321 can receive the coolant from the liquid inlet pipe 322 to perform water cooling on the transformer body 20. During this process, the air-cooled heat dissipation fan 31 is still working continuously. Therefore, the transformer body 20 can be quickly cooled by a combined heat dissipation method combining forced air cooling and water cooling, thereby effectively suppressing the continued growth of the temperature of the transformer body 20, and ensuring that the transformer body 20 can operate reliably under a high workload for a long time.

[0068] It can be seen that the high-frequency transformer disclosed in this embodiment is provided with a heat dissipation mechanism 30 that can provide two heat dissipation modes of forced air cooling and water cooling. When the transformer body 20 works under a low workload so that its own temperature does not reach the first temperature threshold, the transformer body 20 dissipates heat through natural air cooling; when the transformer body 20 works under a medium workload so that its own temperature reaches the first temperature threshold but is lower than the second temperature threshold, the air cooling fan 31 works to perform forced air cooling and heat dissipation on the transformer body 20; when the transformer body 20 works under a high workload so that its own temperature reaches or exceeds the second temperature threshold, the air cooling fan 31 and the cooling pipeline 32 work simultaneously to perform a combined heat dissipation of forced air cooling and water cooling on the transformer body 20. In this way, it is realized that a reasonable heat dissipation mode is selected according to the workload of the transformer body 20 to dissipate heat for it, and on the basis of ensuring that the heat dissipation effect of the transformer body 20 under different workloads is good, the heat dissipation cost required for heat dissipation of the transformer body 20 is reduced as much as possible, and reasonable use of resources is realized.

[0069] In order to further optimize the heat dissipation effect when the transformer body 20 is water-cooled, the present embodiment further improves the structure of the cooling pipe 321 .

[0070] Combination Figure 5 As shown in the content, the cooling pipe 321 may further include a plurality of cooling branches 3211 arranged in sequence along the height direction of the transformer body 20, and a small gap is provided between two adjacent cooling branches 3211. While ensuring a good water cooling heat dissipation effect, it is beneficial that when the transformer body 20 is forced to be cooled by the air cooling fan 31, the air flow provided by the air cooling fan 31 can pass through the gap between the two adjacent cooling branches 3211 and contact the transformer body 20, thereby ensuring the forced air cooling heat dissipation effect as much as possible.

[0071] The single cooling branch pipe 3211 extends horizontally around the outer periphery of the transformer body 20 and then closes. Figure 2 or Figure 5 As shown, the single cooling branch pipe 3211 is a horizontal annular closed structure matching the outer periphery of the transformer body 20. At the same time, the single cooling branch pipe 3211 is provided with a liquid inlet flow channel 3212 and a liquid outlet flow channel 3213 on opposite sides thereof, for example, one of the liquid inlet flow channel 3212 and the liquid outlet flow channel 3213 can be provided on the left side of the single cooling branch pipe 3211, and the other of the liquid inlet flow channel 3212 and the liquid outlet flow channel 3213 can be provided on the right side of the single cooling branch pipe 3211.

[0072] Among them, refer to Figure 6 As shown, in two adjacent cooling branches 3211, the inlet flow channel 3212 and the outlet flow channel 3213 of the two cooling branches 3211 are arranged at opposite positions. For example, when the inlet flow channel 3212 of the upper cooling branch 3211 is located on its left side and the outlet flow channel 3213 is located on its right side, the inlet flow channel 3212 of the lower cooling branch 3211 is located on its right side and the outlet flow channel 3213 is located on its left side. Moreover, in two adjacent cooling branches 3211, the outlet flow channel 3213 of the upper cooling branch 3211 is connected to the inlet flow channel 3212 of the lower cooling branch 3211. At the same time, the liquid inlet channel 3212 of the cooling branch pipe 3211 located at the top serves as the liquid inlet of the entire cooling pipe 321, so as to receive the coolant provided by the liquid inlet pipe 322, and the liquid outlet channel 3213 of the cooling branch pipe 3211 located at the bottom serves as the liquid discharge port of the entire cooling pipe 321, so as to discharge the coolant flowing through the cooling pipe 321.

[0073] In this way, when the cooling pipe 321 is used to provide water cooling for the transformer body 20, the coolant provided by the liquid inlet pipe 322 will first enter the top cooling branch 3211 from the liquid inlet channel 3212 of the cooling branch 3211 located at the top. Since the cooling branch 3211 is a horizontal annular closed structure, the coolant entering the top cooling branch 3211 can be divided into two parts, and flow through the parts of the top cooling branch 3211 that are aligned with the front and rear sides of the transformer body 20 respectively, so as to reach its own liquid outlet channel 3213. In this process, the coolant flowing through the cooling branch 3211 can perform all-round water cooling on the circumference of the transformer body 20. After the coolant flows through the liquid outlet channel 3213 of the top cooling branch pipe 3211, the coolant will flow out from the liquid outlet channel 3213 of the top cooling branch pipe 3211 and enter the next cooling branch pipe 3211 through the liquid inlet channel 3212 of the next cooling branch pipe 3211. By analogy, the coolant will flow through multiple cooling branches 3211 in sequence to achieve comprehensive water cooling of the transformer body 20 along the height direction of the transformer body 20. Finally, the coolant will flow out from the liquid outlet channel 3213 of the bottom cooling branch pipe 3211 and enter the drain pipe 323, so that the used coolant can be discharged through the drain pipe 323.

[0074] It can be understood that, in this embodiment, the cooling tube 321 is constructed in the above manner. Compared with the common method of setting the cooling tube 321 in a spiral shape, by configuring a single cooling branch 3211 into a horizontal annular closed structure, it is beneficial to further delay the time required for the coolant to flow through a single cooling branch 3211. At the same time, by setting the inlet channel 3212 and the outlet channel 3213 of two adjacent cooling branches 3211 in opposite directions, it is possible to further delay the time required for the coolant to flow through the entire cooling tube 321, thereby facilitating improving the water cooling heat dissipation effect. Furthermore, when the cooling pipe 321 in this embodiment performs water cooling on the transformer body 20, the air-cooling fan 31 also performs forced air cooling on the transformer body 20. During this process, the air flow from the air-cooling fan 31, when blowing toward the multiple cooling branches 3211, can also serve the purpose of dissipating the coolant flowing through the cooling branches 3211, thereby further improving the water cooling effect, and is beneficial to reducing the temperature of the coolant discharged from the drain pipe 323, thereby helping to reduce the workload of the coolant circulation unit 33 to be described below when cooling the used coolant.

[0075] Further, see Figure 6As shown, the longitudinal cross-section of the internal flow path of a single cooling branch 3211 can be in the shape of a long waist, so that the longitudinal cross-section of the internal flow path of the single cooling branch 3211 contains two arc-shaped edges. In this way, it is not only beneficial to increase the amount of coolant flowing through the single cooling branch 3211 to improve the water cooling heat dissipation effect, but also can effectively improve the pressure resistance of the cooling branch 3211, avoid deformation of the cooling branch 3211 during long-term service as much as possible, and increase the service life of the cooling branch 3211. At the same time, the thickness of the single cooling branch 3211 in the height direction can be reduced as much as possible, so as to optimize the structural design of the cooling branch 3211 as much as possible, thereby providing the possibility for compact and miniaturized design of high-frequency transformers.

[0076] Furthermore, the inventors of the present application have further studied and found that, since the cooling branch pipe 3211 is generally a component with a thinner wall, the cooling branch pipe 3211 itself has little effect on the temperature of the transformer body 20. Therefore, it is possible to consider increasing the thermal conductivity of the cooling branch pipe 3211 as much as possible to further improve the water cooling heat dissipation effect. For example, it is possible to consider setting the material of the cooling branch pipe 3211 to aluminum so that the cooling branch pipe 3211 has a good thermal conductivity to further improve the water cooling heat dissipation effect.

[0077] In order to further optimize the structural design of the cooling pipeline 32, combined with Figure 1 As shown in the content, the liquid inlet pipe 322 can be a component arranged on the left side of the transformer body 20 and connected to the top plate 22 and the bottom plate 21 of the transformer body 20 at the same time, and one end of the liquid inlet pipe 322 connected to the liquid inlet of the cooling pipe 321 (that is, the liquid inlet channel 3212 of the uppermost cooling branch pipe 3211) can pass through the top plate 22 and then be connected to the liquid inlet.

[0078] On this basis, in order to cool down the used coolant and realize the recycling of the coolant, the heat dissipation mechanism 30 may further include a coolant circulation unit 33 .

[0079] Combination Figure 1 , Figure 3 and Figure 5 As shown, the coolant circulation unit 33 may include a mounting plate 331 , a storage tank 332 , a pumping component 333 , a heat sink 334 , and a heat sink fan 335 .

[0080] The mounting plate 331 can be fixedly disposed below the substrate 10. For example, the mounting plate 331 and the substrate 10 can be connected by Figure 1The connecting posts 336 are connected, and there is a gap between the mounting plate 331 and the base plate 10. The mounting plate 331 is used to provide a carrier for the installation of components such as the storage box 332, the heat dissipation radiator 334, and the heat dissipation fan 335, and the storage box 332, the heat dissipation radiator 334, and the heat dissipation fan 335 can be installed in the gap between the mounting plate 331 and the base plate 10, thereby optimizing the structural design of the entire high-frequency transformer as much as possible.

[0081] The storage tank 332 may be disposed on the mounting plate 331 , and the storage tank 332 is suitable for storing coolant. The pumping component 333 is configured to selectively obtain the coolant stored in the storage tank 332 , and provide the obtained coolant to the liquid inlet of the cooling pipe 321 .

[0082] The pumping component 333 may be a pump. For example, when the coolant is deionized water, the pumping component 333 may be a waterproof water pump. The pumping component 333 may be arranged inside the storage box 332, and the input end of the pumping component 333 is immersed in the coolant in the storage box 332 to optimize the structural design of the coolant circulation unit 33; one end of the liquid inlet pipe 322 is connected to the liquid inlet of the cooling pipe 321, and the other end of the liquid inlet pipe 322 is connected to the output end of the pumping component 333 after extending along the height direction of the transformer body 20. In this way, in combination with the above, when the transformer body 20 works under a high workload so that its own temperature reaches the second temperature threshold, the pumping component 333 can work to pump the coolant in the storage box 332 to the liquid inlet pipe 322, so that the coolant enters the cooling pipe 321 after flowing through the liquid inlet pipe 322, thereby providing water cooling for the transformer body 20.

[0083] Reference Figure 3 As shown, the heat dissipation radiator 334 can be arranged on the mounting plate 331 located beside the storage box 332. The heat dissipation radiator 334 has an inlet and an outlet. The outlet of the heat dissipation radiator 334 is connected to the storage box 332, and the inlet of the heat dissipation radiator 334 can be connected to the drain port of the cooling tube 321 through the drain pipe 323. The function of the heat dissipation radiator 334 is to receive the coolant from the cooling tube 321 and cool the coolant, and allow the cooled coolant to flow back into the storage box 332, thereby realizing the recycling of the coolant.

[0084] Reference Figure 5 As shown, the radiator cooling fan 335 can be arranged on the mounting plate 331 located beside the radiator 334 , and the output end of the radiator cooling fan 335 is aligned with the radiator 334 .

[0085] Thus, when the coolant from the cooling pipe 321 enters the heat dissipation radiator 334, so that the heat dissipation radiator 334 and the coolant exchange heat, thereby cooling the coolant, the radiator cooling fan 335 can be started to form an air flow that flows rapidly toward the heat dissipation radiator 334, thereby taking away the heat from the coolant acquired by the heat dissipation radiator 334. At the same time, since the radiator cooling fan 335 is installed in the gap between the mounting plate 331 and the substrate 10, which is open all around, it is beneficial to make the air in the gap between the mounting plate 331 and the substrate 10 flow rapidly, so as to improve the cooling effect when cooling the coolant.

[0086] It can be understood that, in combination with the foregoing, when the coolant flows through the cooling pipe 321 to water-cool the transformer body 20, the air-cooled cooling fan 31 has already preliminarily cooled the coolant flowing through the cooling pipe 321. Therefore, the temperature of the coolant actually reaching the heat dissipation radiator 334 will not be too high. At this time, the radiator cooling fan 335 only needs to work at a lower power to fully cool the coolant after use, which is beneficial to reduce the workload of the radiator cooling fan 335.

[0087] Among them, the aforementioned substrate 10 can be an insulation board made of insulation material to avoid as much as possible the heat generated by the transformer body 20 during operation from being transferred to components of the coolant circulation unit 33 below the substrate 10, such as the storage box 332 and the heat dissipation radiator 334, thereby affecting the cooling effect of the coolant.

[0088] Example 2

[0089] Based on the first embodiment, the present embodiment provides another high frequency transformer. The difference from the first embodiment is that the high frequency transformer provided by the present embodiment further includes: Figure 1 The control component 40 shown is expected to automatically operate the air-cooling fan 31 to perform forced air cooling and heat dissipation on the transformer body 20 when the temperature of the transformer body 20 reaches a first temperature threshold, and to automatically operate the pumping component 333 to achieve combined heat dissipation of the transformer body 20 by combining forced air cooling and water cooling while keeping the air-cooling fan 31 working when the temperature of the transformer body 20 reaches a second temperature threshold.

[0090] Specifically, combined Figure 7As shown, the control component 40 may include a trigger component 41, a first signal generating component 42, and a second signal generating component 43. The trigger component 41 has a trigger portion 411, which is configured to enable the trigger portion 411 to reciprocate between an initial position, a first trigger position, and a second trigger position in sequence under the temperature excitation of the transformer body 20. When the temperature of the transformer body 20 is lower than the first temperature threshold, the trigger portion 411 is in the initial position, when the temperature of the transformer body 20 reaches the first temperature threshold, the trigger portion 411 is in the first trigger position, and when the temperature of the transformer body 20 reaches the second temperature threshold, the trigger portion 411 is in the second trigger position.

[0091] The first signal generating component 42 and the second signal generating component 43 are both arranged on the moving path of the triggering part 411. The first signal generating component 42 is communicatively connected to the air-cooling heat dissipation fan 31, and the first signal generating component 42 is suitable for being triggered by the triggering part 411 at the first triggering position and the second triggering position, that is, the triggering part 411 at the first triggering position and the triggering part 411 at the second triggering position can both trigger the first signal generating component 42 to send a first control signal to the air-cooling heat dissipation fan 31, so that the air-cooling heat dissipation fan 31 works.

[0092] The second signal generating component 43 is communicatively connected to the pumping component 333, and is adapted to be triggered by the triggering portion 411 in the second triggering position to send a second control signal to the pumping component 333, thereby operating the pumping component 333. The first signal generating component 42 and the second signal generating component 43 may both be micro switches capable of sending control signals in a triggered state.

[0093] Based on the above arrangement, during the actual operation of the high-frequency transformer, if the transformer body 20 operates under a low workload, the temperature of the transformer body 20 does not reach the first temperature threshold, at this time, the trigger unit 411 is in the initial position, and the trigger unit 411 does not trigger any one of the first signal generating component 42 and the second signal generating component 43, the air-cooled heat dissipation fan 31 and the pumping component 333 are not working, and the transformer body 20 dissipates heat by natural air cooling; correspondingly, if the transformer body 20 operates under a medium workload so that the temperature of the transformer body 20 reaches the first temperature threshold, the trigger component 41 can move the trigger unit 411 from the initial position to the first trigger position under the temperature excitation of the transformer body 20, thereby triggering the first signal generating component 42 through the trigger unit 411 to send the first control signal to the air-cooled heat dissipation fan 31. signal, so that the air-cooling heat dissipation fan 31 starts working, and then the transformer body 20 is forced to be cooled by air; correspondingly, if the transformer body 20 works under a high workload, so that the temperature of the transformer body 20 rises from the first temperature threshold to the second temperature threshold, the trigger component 41 can make the trigger part 411 move from the first trigger position to the second trigger position under the temperature excitation of the transformer body 20. At this time, the trigger part 411 will simultaneously trigger the first signal generating component 42 and the second signal generating component 43, so as to send the first control signal and the second control signal to the air-cooling heat dissipation fan 31 and the pumping component 333 respectively through the first signal generating component 42 and the second signal generating component 43, so that the air-cooling heat dissipation fan 31 and the pumping component 333 work at the same time, and then the transformer body 20 is forced to be cooled by a combination of air cooling and water cooling.

[0094] On the contrary, when the temperature of the transformer body 20 drops below the second temperature threshold, the trigger part 411 will move from the second trigger position to the first trigger position. At this time, the trigger part 411 only triggers the first signal generating component 42, the pumping component 333 will stop working, and the air-cooling heat dissipation fan 31 continues to work to force air cooling and heat dissipation of the transformer body 20; when the temperature of the transformer body 20 drops below the first temperature threshold, the trigger part 411 will move from the first trigger position to the initial position. At this time, the trigger part 411 no longer triggers any one of the first signal generating component 42 and the second signal generating component 43, and the air-cooling heat dissipation fan 31 and the pumping component 333 will stop working until the temperature of the transformer body 20 rises again, and then repeat the above process to provide a reasonable heat dissipation method for the transformer body 20 to dissipate heat.

[0095] It can be understood that by providing a trigger component 41 that can be stimulated by the temperature of the transformer body 20, and cooperating with the first signal generating component 42 and the second signal generating component 43, one or both of the air-cooling heat dissipation fan 31 and the pumping component 333 can be automatically turned on according to the temperature of the transformer body 20, so as to automatically select a reasonable heat dissipation method according to the temperature of the transformer body 20 to dissipate the heat of the transformer body 20. Compared with the common method of controlling related components by cooperating with a temperature sensor and a controller, it is beneficial to reduce the manufacturing and use costs of the high-frequency transformer and to further optimize the structural design of the high-frequency transformer.

[0096] Furthermore, the trigger component 41 can be constructed in the manner described below, so that the trigger component 41 can make the trigger part 411 move back and forth in sequence between the initial position, the first trigger position and the second trigger position under the temperature excitation of the transformer body 20, and improve the sensitivity of the trigger component 41 to temperature, thereby achieving more accurate selection of a reasonable heat dissipation method according to the temperature of the transformer body 20 to dissipate heat for the transformer body 20.

[0097] Combination Figure 8 As shown, the trigger component 41 may include a cylinder 412, a moving part 413, a first memory spring 414, and a second memory spring 415. The cylinder 412 may be arranged close to the outer wall of the transformer body 20. For example, the cylinder 412 may be arranged on the outer wall of the transformer body 20 on the side (i.e., the front side) away from the air-cooling heat dissipation fan 31 to avoid the air flow from being directly blown toward the cylinder 412 when the air-cooling heat dissipation fan 31 is working, and to avoid the air-cooling heat dissipation fan 31 indirectly cooling the cylinder 412 as much as possible, resulting in a situation where the temperature inside the cylinder 412 differs too much from the actual temperature of the transformer body 20. At the same time, the cylinder 412 may be made of a heat-conducting material to make the temperature inside the cylinder 412 as close as possible to the actual temperature of the transformer body 20.

[0098] The cylinder body 412 defines an active cavity 4121 inside, and the moving member 413 is slidably disposed in the active cavity 4121, so that the moving member 413 can slide freely in the height direction. For example, a slide groove 4122 extending in the height direction can be provided in the active cavity 4121, and the moving member 413 is slidably disposed in the slide groove 4122, so that the moving member 413 can slide freely in the active cavity 4121 in the height direction.

[0099] The first memory spring 414 and the second memory spring 415 are arranged between the moving part 413 and the inner top wall of the active cavity 4121. One end of the first memory spring 414 is fixedly connected to the inner top wall of the active cavity 4121, and the other end of the first memory spring 414 is fixedly connected to one end of the second memory spring 415 after extending in the height direction, and the other end of the second memory spring 415 is fixedly connected to the moving part 413 after extending in the height direction. Among them, the deformation temperature of the first memory spring 414 is equal to the first temperature threshold, and the deformation temperature of the second memory spring 415 is equal to the second temperature threshold. The trigger part 411 is located below the moving part 413 and is connected to the moving part 413.

[0100] At this time, the first signal generating component 42 and the second signal generating component 43 are sequentially arranged on the moving path of the triggering portion 411 from bottom to top along the height direction.

[0101] It is worth noting that the first memory spring 414 and the second memory spring 415 described in this embodiment are both made of a two-way shape memory alloy, especially a two-way shape memory alloy that can be stretched to the longest length at low temperature and can be shortened to the shortest length at high temperature. Shape memory alloy generally refers to a metal material that is sensitive to temperature and can be restored to a previously set shape when stimulated by a suitable temperature. Generally speaking, for a memory spring made of a two-way shape memory alloy, at low temperature, the memory spring can be in an extreme elongation state (i.e., a state in which it cannot be further extended) and has the longest length. As the temperature rises, when the temperature rises to the deformation temperature of the memory spring, the memory spring can be shortened to an extreme contraction state (i.e., a state in which it cannot be further shortened) and has the shortest length; accordingly, when the temperature drops again, the memory spring can be extended from the extreme contraction state to the extreme elongation state again.

[0102] Thus, in the present embodiment, by setting the first memory spring 414 and the second memory spring 415 with different deformation temperatures, when the transformer body 20 works under a low workload, since the temperature of the transformer body 20 does not reach the first temperature threshold, that is, does not reach the deformation temperature of the first memory spring 414 and the second memory spring 415, the first memory spring 414 and the second memory spring 415 will be in an extreme elongation state. At this time, the moving part 413 is located at the lowest extreme position in the active cavity 4121, and the trigger part 411 connected to the moving part 413 is in the initial position; accordingly, when the transformer body 20 is working under a low workload, since the temperature of the transformer body 20 does not reach the first temperature threshold, that is, does not reach the deformation temperature of the first memory spring 414 and the second memory spring 415, the first memory spring 414 and the second memory spring 415 will be in an extreme elongation state. At this time, the moving part 413 is located at the lowest extreme position in the active cavity 4121, and the trigger part 411 connected to the moving part 413 is in the initial position; accordingly, when the transformer body When the transformer body 20 works under a medium workload, the temperature of the transformer body 20 will reach a first temperature threshold, that is, the deformation temperature of the first memory spring 414. At this time, the first memory spring 414 will be shortened from the extreme elongated state to the extreme contracted state, so as to drive the second memory spring 415 together with the moving member 413 to move upward in the active cavity 4121, thereby causing the trigger portion 411 to move upward toward the first trigger position, and the contracted length of the first memory spring 414 is equal to the distance the trigger portion 411 moves from the initial position to the first trigger position, so that when the first memory spring 414 is shortened to the extreme contracted state, the trigger portion 411 is triggered. The triggering part 411 just moves from the initial position to the first triggering position, thereby triggering the first signal generating component 42 through the triggering part 411 to realize forced air cooling of the transformer body 20; accordingly, when the transformer body 20 works under a high workload, the temperature of the transformer body 20 will reach the second temperature threshold, that is, the deformation temperature of the second memory spring 415, and the temperature is higher than the deformation temperature of the first memory spring 414. At this time, the first memory spring 414 will remain in the extreme contraction state, and the second memory spring 415 can be shortened from the extreme extension state to the extreme contraction state to achieve the forced air cooling of the transformer body 20 through the second memory spring 414. The spring 415 drives the moving part 413 to move upward in the active cavity 4121, thereby causing the trigger part 411 to move upward toward the second trigger position, and the length of the second memory spring 415 after contraction is equal to the distance the trigger part 411 moves from the first trigger position to the second trigger position, so that when the second memory spring 415 is shortened to the ultimate contraction state, the trigger part 411 just moves from the first trigger position to the second trigger position, thereby simultaneously triggering the first signal generating component 42 and the second signal generating component 43 through the trigger part 411, so as to realize the combined heat dissipation of the transformer body 20 by forced air cooling and water cooling.

[0103] On the contrary, when the temperature of the transformer body 20 is reduced to below the second temperature threshold, the second memory spring 415 will be extended from the extreme contraction state to the extreme extension state, thereby driving the trigger part 411 from the second trigger position to the first trigger position through the moving part 413; correspondingly, when the temperature of the transformer body 20 is reduced to below the first temperature threshold, the first memory spring 414 will be extended from the extreme contraction state to the extreme extension state, thereby driving the trigger part 411 from the first trigger position to the second trigger position through the moving part 413. By analogy, the first memory spring 414 and the second memory spring 415 can cooperate to achieve the reciprocating movement of the trigger part 411 between the initial position, the first trigger position and the second trigger position according to the temperature of the transformer body 20.

[0104] It can be understood that this embodiment adopts the first memory spring 414 and the second memory spring 415 as temperature sensing components. Compared with conventional temperature sensors, since the use of memory springs does not require electricity, it can effectively reduce costs and reduce unnecessary wiring in high-frequency transformers. This method is conducive to more sensitive perception of temperature changes in the transformer body 20, thereby facilitating improved accuracy in controlling the operation of the air-cooled heat dissipation fan 31 and / or the pumping component 333, so that when the temperature of the transformer body 20 reaches the first temperature threshold or the second temperature threshold, a reasonable heat dissipation method can be automatically selected at the first time to dissipate the heat of the transformer body 20.

[0105] Among them, refer to Figure 1 As shown, the cylinder body 412 can be arranged on the front side of the transformer body 20 near the bottom of the transformer body 20, so that the first signal generating component 42 and the second signal generating component 43 mentioned above can be directly installed on the top of the substrate 10 through the bracket, which is beneficial to optimize the structural design of the entire high-frequency transformer.

[0106] And, refer to Figure 8 As shown, an opening is provided on one side of the cylinder 412 close to the transformer body 20, so that the heat generated by the transformer body 20 when working can smoothly enter the cylinder 412, thereby further improving the consistency between the internal temperature of the cylinder 412 and the temperature of the transformer body 20, which is conducive to the first memory spring 414 and the second memory spring 415 to more accurately sense the temperature change of the transformer body 20, so as to ensure as much as possible that when the temperature of the transformer body 20 reaches the first temperature threshold, the first memory spring 414 can be shortened from the extreme elongation state to the extreme contraction state, and when the temperature of the transformer body 20 reaches the second temperature threshold, the second memory spring 415 can be shortened from the extreme elongation state to the extreme contraction state.

[0107] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high frequency transformer, characterized in that: include: The transformer body has different temperatures under different working loads; A heat dissipation mechanism, including an air-cooled heat dissipation fan and a cooling pipeline; The output end of the air-cooling heat dissipation fan is aligned with one side of the transformer body, and the air-cooling heat dissipation fan is configured to provide forced air cooling and heat dissipation for the transformer body when the temperature of the transformer body reaches a first temperature threshold; The cooling pipeline includes a cooling pipe having a liquid inlet and a liquid outlet, the cooling pipe is arranged around the outer circumference of the transformer body and is arranged close to the outer wall of the transformer body; the liquid inlet is configured to receive cooling liquid when the temperature of the transformer body reaches a second temperature threshold, thereby providing water cooling for the transformer body; the liquid outlet is configured to discharge the cooling liquid flowing through the cooling pipe; wherein the second temperature threshold is greater than the first temperature threshold; The heat dissipation mechanism further includes a coolant circulation unit, and the coolant circulation unit includes: A storage tank, suitable for storing coolant; a pumping component configured to selectively obtain the coolant stored in the storage tank and provide the obtained coolant to the liquid inlet; A heat dissipation radiator having an inlet and an outlet; the inlet of the heat dissipation radiator is connected to the drain port, and the outlet of the heat dissipation radiator is connected to the storage box; A radiator cooling fan, wherein the output end of the radiator cooling fan is aligned with the radiator; Also included is a control component, the control component comprising: A trigger component having a trigger portion, wherein the trigger component is configured to enable the trigger portion to reciprocate in sequence between an initial position, a first trigger position, and a second trigger position under the temperature excitation of the transformer body; wherein when the temperature of the transformer body is lower than the first temperature threshold, the trigger portion is in the initial position, when the temperature of the transformer body reaches the first temperature threshold, the trigger portion is in the first trigger position, and when the temperature of the transformer body reaches the second temperature threshold, the trigger portion is in the second trigger position; The first signal generating component and the second signal generating component are both arranged on the moving path of the triggering part; The first signal generating component is communicatively connected to the air-cooling heat dissipation fan; the first signal generating component is adapted to be triggered by the triggering portion in the first triggering position and the second triggering position to send a first control signal to the air-cooling heat dissipation fan; The second signal generating component is communicatively connected to the pumping component; the second signal generating component is adapted to be triggered by the triggering portion in the second triggering position to send a second control signal to the pumping component.

2. The high frequency transformer according to claim 1, characterized in that: The trigger component comprises: A cylinder body is arranged close to the outer circumference of the transformer body; an active cavity is defined inside the cylinder body; A moving part, which is arranged in the movable cavity and can slide freely in the height direction; a first memory spring and a second memory spring, wherein one end of the first memory spring is fixedly connected to the inner top wall of the movable cavity, the other end of the first memory spring is fixedly connected to one end of the second memory spring after extending in the height direction, and the other end of the second memory spring is fixedly connected to the moving part after extending in the height direction; the deformation temperature of the first memory spring is equal to the first temperature threshold, and the deformation temperature of the second memory spring is equal to the second temperature threshold; The triggering part is located below the moving part and connected to the moving part, and the first signal generating component and the second signal generating component are sequentially arranged on a moving path of the triggering part from bottom to top along a height direction.

3. The high frequency transformer according to claim 2, characterized in that: The cylinder body is arranged on the outer wall of the transformer body on the side away from the air-cooling heat dissipation fan, the cylinder body is made of heat-conducting material, and an opening is arranged on the side of the cylinder body facing the transformer body.

4. The high frequency transformer according to claim 1, characterized in that: It also includes a substrate, on which the transformer body and the air-cooling heat dissipation fan are both arranged; The coolant circulation unit further comprises a mounting plate, wherein the mounting plate is fixedly disposed below the base plate, and a gap is provided between the mounting plate and the base plate; The storage box, the heat dissipation radiator and the heat dissipation fan are all arranged on the mounting plate and located in the gap.

5. The high frequency transformer according to claim 4, characterized in that: The substrate is made of heat-insulating material.

6. The high frequency transformer according to claim 1, characterized in that: The cooling pipe comprises a plurality of cooling branches arranged in sequence along the height direction of the transformer body; the cooling branches extend horizontally around the outer circumference of the transformer body and then close, and opposite sides of the cooling branches are respectively provided with a liquid inlet channel and a liquid outlet channel; In two adjacent cooling branches, the liquid inlet flow channels and the liquid outlet flow channels of the two cooling branches are arranged at opposite positions, and the liquid outlet flow channel of the upper cooling branch is connected to the liquid inlet flow channel of the lower cooling branch; Among them, the liquid inlet channel of the cooling branch pipe located at the top serves as the liquid inlet, and the liquid outlet channel of the cooling branch pipe located at the bottom serves as the liquid outlet.

7. The high frequency transformer according to claim 6, characterized in that: The longitudinal cross section of the internal flow path of the cooling branch pipe is in a long waist shape; the material of the cooling branch pipe is aluminum.

8. The high frequency transformer according to claim 1, characterized in that: The transformer body comprises a bottom plate and a top plate located above the bottom plate, two mirror-symmetrical E-shaped iron cores are arranged between the bottom plate and the top plate, a frame is fixedly sleeved around the outer periphery of the central columns of the two E-shaped iron cores, a primary winding is wound around the outer periphery of the frame, and a secondary winding is wound around the outer periphery of the primary winding; The cooling circuit also includes a liquid inlet pipe, which is configured to provide cooling liquid to the liquid inlet when the temperature of the transformer body reaches the second temperature threshold. The liquid inlet pipe is arranged on the left side of the transformer body and is connected to the top plate and the bottom plate at the same time.

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