A transformer and method of assembling the same

Abstract

The application discloses a transformer and an assembling method thereof. The transformer comprises a core, a coil winding and an adjusting system. The core is made of an insulating material and has a magnetic fluid cavity. The magnetic fluid cavity contains flowable magnetic fluid. The magnetic fluid comprises magnetic particles and a carrier liquid. The coil winding comprises a primary coil winding and a secondary coil winding. The primary coil winding and the secondary coil winding are wound on core columns of the core respectively. The adjusting system is communicated with the magnetic fluid cavity. The adjusting system can adjust the density of the magnetic fluid in the magnetic fluid cavity. The magnetic particles of the magnetic fluid can arrange into a chain structure under the action of a magnetic field. The transformer can effectively inhibit the magnetostriction effect, reduce the magnetic hysteresis loss and the eddy current loss, improve the voltage conversion efficiency, and thus improve the magnetic efficiency of the transformer. The density of the magnetic fluid is adjusted, the magnetic flux in the core is changed, and the stepless voltage regulation function of the transformer is realized.

Description

Technical Field

[0001] This application relates to the field of power transformer technology, and more specifically, to a transformer and its assembly method. Background Technology

[0002] Traditional transformers typically use silicon steel sheets as the core material. While silicon steel sheets have good magnetic permeability, they still have some shortcomings in practical applications. The magnetostrictive effect of silicon steel sheets can cause significant vibration and noise during transformer operation, and its iron losses are relatively high, affecting the transformer's efficiency and performance. Furthermore, the processing performance of silicon steel sheets is limited, making it difficult to achieve complex core structure designs.

[0003] Therefore, how to improve the efficiency of transformers and optimize their performance has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a transformer to improve transformer efficiency and optimize transformer performance.

[0005] Another key aspect of this application is the disclosure of an assembly method for assembling the aforementioned transformer.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A transformer includes an iron core, coil windings, and a regulating system. The iron core is made of an insulating material and has a magnetofluid cavity containing a flowable magnetofluid, the magnetofluid comprising magnetic particles and a carrier fluid.

[0008] The coil winding includes a primary coil winding and a secondary coil winding, which are respectively wound on the core post of the iron core;

[0009] The regulating system is connected to the magnetofluid cavity and is capable of adjusting the density of the magnetofluid within the magnetofluid cavity. The regulating system includes a buffer container for storing the magnetofluid and a delivery pump connected to the buffer container. The delivery pump is connected to the magnetofluid cavity via a delivery pipe.

[0010] The buffer container includes a first buffer container for storing high-concentration magnetic fluid and a second buffer container for storing low-concentration magnetic fluid.

[0011] The delivery pump includes a first delivery pump and a second delivery pump, the first delivery pump being connected to the first buffer container and the second delivery pump being connected to the second buffer container; the delivery pipeline includes a first delivery pipeline and a second delivery pipeline, the first delivery pipeline being connected to the first delivery pump and the magnetohydrodynamic cavity, and the second delivery pipeline being connected to the second delivery pump and the magnetohydrodynamic cavity; or, the delivery pump is connected to the first buffer container and the second buffer container respectively, and a regulating valve is provided on the pipeline connecting the delivery pump to the first buffer container and the second buffer container.

[0012] Optionally, in the above-mentioned transformer, the magnetofluid cavity is connected to a circulation pump through a circulation pipe, so that the magnetofluid can flow within the magnetofluid cavity.

[0013] Optionally, in the above-mentioned transformer, the conveying pipeline is connected to the circulation pipeline, and the connection point between the conveying pipeline and the circulation pipeline is located downstream of the circulation pump.

[0014] Optionally, the transformer described above also includes a heat dissipation system, to which the circulation pipe is connected, and the heat dissipation system includes an air-cooled radiator or a liquid-cooled radiator.

[0015] Optionally, in the above-mentioned transformer, the transformer further includes a magnetofluid parameter detection component, which includes a temperature measuring element and a magnetic flux detection element.

[0016] Optionally, in the above-mentioned transformer, the core includes a plurality of core columns, a first end structure connected to the top of each core column, and a second end structure connected to the bottom of each core column. The first end structure has a first cavity, the second end structure has a second cavity, and each core column has a third cavity. Each third cavity is connected to the first cavity and the second cavity to form the magnetohydrodynamic cavity.

[0017] As can be seen from the above scheme, the transformer disclosed in this application uses a flowing magnetic fluid within the magnetic fluid cavity of the iron core for magnetic conduction. Compared to using silicon steel sheets as the magnetic conducting material, the magnetic particles of the magnetic fluid can self-arrange into a chain structure under the influence of a magnetic field, effectively suppressing the magnetostrictive effect, reducing hysteresis loss and eddy current loss, and improving voltage conversion efficiency. It also reduces vibration and noise during transformer operation, providing users with a quieter power environment. The adjustment system can regulate the density of the magnetic fluid, thereby changing the magnetic flux within the iron core and achieving stepless voltage regulation. Furthermore, this transformer reduces the overall weight during transportation, thus lowering transportation costs. The transformer disclosed in this application can be widely used in power transmission, electronic equipment, and many other fields, with a broad application range.

[0018] A transformer assembly method for assembling a transformer as described above includes the following steps:

[0019] To prepare a magnetic fluid, magnetic particles are selected, and the magnetic particles and carrier liquid are mixed in a preset ratio. A surfactant is added to form the magnetic fluid.

[0020] Assemble the iron core by placing the magnetofluid in the magnetofluid cavity to form the iron core;

[0021] Assemble the transformer by arranging the primary coil winding and the secondary coil winding separately around the core post of the iron core.

[0022] Optionally, in the above transformer assembly method, the magnetic particles are iron oxide particles; and / or,

[0023] The surfactant is silicon dioxide; and / or,

[0024] The carrier liquid is water or an organic solvent.

[0025] The transformer assembly method disclosed in this application is simple in steps, easy to implement, and conducive to reducing production costs and improving production efficiency, thus facilitating the promotion and application of this transformer technology in industry. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the transformer disclosed in the embodiments of this application. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of the transformer disclosed in the embodiments of this application. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the transformer structure disclosed in the embodiments of this application (3).

[0030] Figure 4 This is a schematic diagram of the transformer structure disclosed in the embodiments of this application (4th).

[0031] Figure 5 This is a schematic diagram of the transformer structure disclosed in the embodiments of this application (5).

[0032] Figure 6 This is a flowchart of the transformer assembly method disclosed in the embodiments of this application.

[0033] Among them, 10 is the iron core, 101 is the magnetohydrodynamic cavity, 11 is the core column, 111 is the third cavity, 12 is the first end structure, 121 is the first cavity, 13 is the second end structure, and 131 is the second cavity.

[0034] 20 represents the coil winding;

[0035] 30 is the heat dissipation system;

[0036] 40 is a magnetofluid;

[0037] 50 is a circulating pipe;

[0038] 60 is a circulating pump;

[0039] 70 is the regulating system, 71 is the buffer container, 711 is the first buffer container, 712 is the second buffer container, 72 is the delivery pump, 721 is the first delivery pump, 722 is the second delivery pump, 73 is the delivery pipeline, 731 is the first delivery pipeline, and 732 is the second delivery pipeline.

[0040] 80 is a magnetohydrodynamic parameter detection component. Detailed Implementation

[0041] The core of this application is to disclose a transformer that improves transformer efficiency and optimizes transformer performance.

[0042] Another key aspect of this application is the disclosure of an assembly method for assembling the aforementioned transformer.

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] like Figure 1 and Figure 2As shown in the illustration, this application discloses a transformer, including an iron core 10, a coil winding 20, and a regulating system 70. Specifically, the iron core 10 is made of insulating material, preferably a material resistant to high temperature and impact vibration. The iron core 10 has a magnetofluid cavity 101, within which flows a magnetofluid 40, comprising magnetic particles and a carrier fluid, exhibiting excellent rheological and magnetic properties. The coil winding 20 includes a primary coil winding and a secondary coil winding, which are respectively wound on the core post 11 of the iron core 10. The regulating system 70 is connected to the magnetofluid cavity 101 and can adjust the density of the magnetofluid 40, thereby changing the magnetic flux within the iron core 10 and realizing the stepless voltage regulation function of the transformer.

[0045] In practical use, after alternating current is applied to the primary coil winding, an alternating magnetic field is generated. Under the influence of the magnetic field, the magnetofluid 40 can form a magnetic circuit with high permeability, effectively guiding the magnetic flux through the iron core 10. The secondary winding induces an electromotive force through magnetic coupling. The magnetofluid 40 can flow within the magnetofluid cavity 101, ensuring that the magnetic particles in the magnetofluid 40 remain suspended and uniformly distributed. Under the influence of the magnetic field, the magnetic particles can arrange themselves into a chain-like structure, effectively suppressing the magnetostrictive effect. The regulating system 70 can adjust the density of the magnetofluid within the magnetofluid cavity 101, realizing the stepless voltage regulation function of the transformer.

[0046] The transformer disclosed in this application uses a flowing magnetic fluid 40 within the magnetofluid cavity 101 of the iron core 10 for magnetic conduction. Compared to using silicon steel sheets as the magnetic material, the magnetic particles of the magnetic fluid 40 can self-align into a chain structure under the influence of a magnetic field, effectively suppressing magnetostriction, reducing hysteresis and eddy current losses, and improving voltage conversion efficiency. It also reduces vibration and noise during transformer operation, providing a quieter power environment for users. The adjustment system 70 can regulate the density of the magnetic fluid 40, thereby changing the magnetic flux within the iron core 10 and achieving stepless voltage regulation. Furthermore, this transformer reduces overall transport weight, thus lowering transportation costs. The transformer disclosed in this application can be widely used in power transmission, electronic equipment, and many other fields, with a broad range of applications.

[0047] It should be noted that the magnetofluid 40 can flow within the magnetofluid cavity 101. Specifically, this can be achieved by installing a stirring mechanism within the magnetofluid cavity 101 or by using an external power device to facilitate the flow of the magnetofluid 40; the specific method is not limited. The shape of the iron core 10 is not limited to... Figure 1 The rectangular shape shown can also be elliptical, circular, etc. The shape shown in the figure is just an example, and the specific shape can be determined according to actual needs.

[0048] Furthermore, such as Figure 1 and Figure 2 As shown, the regulating system 70 includes a buffer container 71 for storing magnetofluid 40 and a delivery pump 72 connected to the buffer container 71. The delivery pump 72 is connected to the magnetofluid cavity 101 via a delivery pipe 73. Preferably, the density of the magnetofluid 40 stored in the buffer container 71 is different from the density of the magnetofluid 40 in the magnetofluid cavity 101, so that magnetofluid 40 of different densities is delivered to the magnetofluid cavity 101 by the delivery pump 72, thereby changing the density of the magnetofluid 40 in the magnetofluid cavity 101, thereby changing the magnetic flux of the iron core 10 and realizing stepless voltage regulation of the transformer.

[0049] Furthermore, in some specific embodiments, such as Figure 3 As shown, the buffer container 71 includes a first buffer container 711 for storing high-concentration magnetic fluid 40 and a second buffer container 712 for storing low-concentration magnetic fluid 40. It should be noted that high concentration and low concentration here refer to the density of magnetic fluid 40 relative to the density of magnetic fluid 40 in the magnetic fluid cavity 101. The delivery pump 72 includes a first delivery pump 721 for delivering high-concentration magnetic fluid 40 and a second delivery pump 722 for delivering low-concentration magnetic fluid 40. Specifically, the first delivery pump 721 is connected to the first buffer container 711, and the second delivery pump 722 is connected to the second buffer container 712. The delivery pipe 73 includes a first delivery pipe 731 and a second delivery pipe 732. The first delivery pipe 731 connects the first delivery pump 721 and the magnetic fluid cavity 101, and the second delivery pipe 732 connects the second delivery pump 722 and the magnetic fluid cavity 101.

[0050] When it is necessary to increase the density of the magnetic fluid 40 in the magnetofluid cavity 101, a high-concentration magnetic fluid 40 from the first buffer container 711 can be delivered to the magnetofluid cavity 101 via the first delivery pump 721; when it is necessary to decrease the density of the magnetic fluid 40 in the magnetofluid cavity 101, a low-concentration magnetic fluid 40 from the second buffer container 712 can be delivered to the magnetofluid cavity 101 via the second delivery pump 722. By changing the density of the magnetic fluid 40 in the magnetofluid cavity 101, the magnetic flux in the iron core 10 is changed, thereby affecting the induced electromotive force of the secondary coil and realizing the function of stepless voltage regulation.

[0051] In other specific embodiments, such as Figure 4 As shown, the delivery pump 72 can be connected to the first buffer container 711 and the second buffer container 712 respectively. Valves (not shown in the figure) are respectively installed on the pipes connecting the delivery pump 72 to the first buffer container 711 and the second buffer container 712. By switching the valves, the delivery pump 72 can be used to deliver the high-concentration magnetic fluid 40 in the first buffer container 711 or the low-concentration magnetic fluid 40 in the second buffer container 712 respectively.

[0052] In some other specific embodiments, the buffer container 71 can be used to store magnetic particles, and the delivery pump 72 is used to deliver the magnetic particles to the magnetofluid cavity 101. When it is necessary to increase the density of the magnetofluid, the magnetic particles can be delivered to the magnetofluid cavity 101 through the delivery pipe 73 under the action of the delivery pump 72.

[0053] Furthermore, such as Figure 1 As shown, in order to enable the magnetofluid 40 to flow within the magnetofluid cavity 101, in some specific embodiments, the magnetofluid cavity 101 is connected to a circulation pump 60 via a circulation pipe 50, thereby allowing the magnetofluid 40 to flow within the magnetofluid cavity 101. Specifically, both ends of the circulation pipe 50 are connected to the magnetofluid cavity 101, and the circulation pump 60 is disposed on the circulation pipe 50 to provide power for the circulation flow of the magnetofluid 40. The arrangement of the circulation pump 60 and the circulation pipe 50 can maintain the uniform distribution of the suspended magnetic particles, enhance the magnetic permeability, and suppress the magnetostrictive effect. Furthermore, the connection between the circulation pipe 50 and the magnetofluid cavity 101 is sealed with a sealing structure, so that the magnetofluid cavity 101 is a closed structure. The circulation pump 60 is preferably a variable frequency pump, which can adjust the circulation flow speed of the magnetofluid 40 by adjusting the frequency of the circulation pump 60.

[0054] Furthermore, such as Figure 1 As shown, in some specific embodiments, the delivery pipe 73 is connected to the circulation pipe 50, and the connection point is located downstream of the circulation pump 60. The buffer container 71 is used to store a high concentration (compared to the density of the magnetic fluid 40 in the magnetic fluid cavity 101) of magnetic fluid 40. The delivery pump 72 is preferably a bidirectional hydraulic pump, which can deliver the high concentration of magnetic fluid 40 stored in the buffer container 71 to the magnetic fluid cavity 101; or, the delivery pump 72 cooperates with the circulation pump 60 to extract the magnetic fluid 40 in the magnetic fluid cavity 101 and deliver it to the buffer container 71, and then deliver the magnetic fluid 40 in the buffer container 71 to the magnetic fluid cavity 101, so as to change the density of the magnetic fluid 40 in the magnetic fluid cavity 101, thereby changing the magnetic flux in the iron core 10, and thus affecting the induced electromotive force of the secondary coil, realizing the function of stepless voltage regulation.

[0055] Furthermore, such as Figure 5 As shown, based on the above embodiment, the buffer container 71 includes a first buffer container 711 and a second buffer container 712. The delivery pump 72 is connected to both the first buffer container 711 and the second buffer container 712, and is also connected to the circulation pipe 50. Valves (not shown in the figure) are respectively installed on the pipes connecting the delivery pump 72 to the first buffer container 711 and the second buffer container 712. By switching the valves, the delivery pump 72 can be used to deliver either a high concentration of magnetic fluid 40 from the first buffer container 711 or a low concentration of magnetic fluid 40 from the second buffer container 712 to the circulation pipe 50.

[0056] Furthermore, to dissipate heat from the magnetofluid 40, the transformer also includes a heat dissipation system 30. Specifically, the circulation pipe 50 is connected to the heat dissipation system 30, which is located upstream or downstream of the circulation pump 60. Powered by the circulation pump 60, the magnetofluid 40 dissipates heat at the heat dissipation system 30 and then flows back into the magnetofluid cavity 101. The heat dissipation system 30 includes air-cooled or liquid-cooled radiators. For example, finned or corrugated tube radiators can be used to cool the magnetofluid 40 with air, or a fan can be installed to cool the magnetofluid 40 through forced convection. Alternatively, the heat dissipation system 30 includes a liquid-cooled radiator, a coolant circulation pump, and a coolant storage container. The coolant circulation pump connects the coolant storage container and the liquid-cooled radiator. The liquid-cooled radiator uses a plate heat exchanger or a shell-and-tube radiator, allowing the magnetofluid 40 to exchange heat with the coolant, thus cooling the magnetofluid 40. The specific structure of the heat dissipation system 30 can be selected according to actual conditions, as long as it effectively cools the magnetofluid 40. The cooling system 30 ensures stable operation of the transformer under different operating conditions, reduces the impact of overheating on the performance of the magnetofluid 40, and extends the service life of the transformer.

[0057] Furthermore, in order to detect the temperature and magnetic flux of the magnetofluid 40, in some specific embodiments, the transformer also includes a magnetofluid parameter detection component 80. Specifically, the magnetofluid parameter detection component 80 includes a temperature sensing element and a magnetic flux detection element. Specifically, the temperature sensing element can be disposed on the circulation pipe 50, preferably downstream of the heat dissipation system 30, to detect the temperature of the magnetofluid 40 flowing back to the magnetofluid cavity 101 after being cooled by the heat dissipation system 30; alternatively, the temperature sensing element can be disposed within the magnetofluid cavity 101. The magnetic flux detection element can be disposed on the core column 11, or at other locations, depending on actual needs. The specific types of the temperature sensing element and the magnetic flux detection element can be selected according to actual needs. The placement of the temperature sensing element and the magnetic flux detection element facilitates timely monitoring of the transformer's operating status, enabling precise control and fault early warning.

[0058] Further, as shown in Figure 2, the iron core 10 includes a plurality of core posts 11, a first end structure 12 connected to the top of each core post 11, and a second end structure 13 connected to the bottom of each core post 11. The first end structure 12 has a first cavity 121, the second end structure 13 has a second cavity 131, and each core post 11 has a third cavity 111. Each third cavity 111 is connected to the first cavity 121 and the second cavity 131 to form a magnetofluid cavity 101, which is an annular closed structure.

[0059] Furthermore, in practical applications, parameters such as the amount of magnetofluid 40, the number of turns of the coil winding 20, and the diameter of the coil can be determined according to the specifications and performance requirements of the transformer.

[0060] Furthermore, such as Figure 6 As shown in the embodiments, this application also discloses a transformer assembly method for assembling the transformer as described above, including the following steps:

[0061] S1. Preparation of magnetic fluid 40;

[0062] Specifically, magnetic nanoparticles are selected, and the magnetic particles and carrier liquid are mixed in a preset ratio. A surfactant is added to form a magnetic fluid 40.

[0063] S2, Assemble iron core 10;

[0064] Specifically, the magnetic fluid 40 is placed in the magnetic fluid cavity 101 to form an iron core 10, and a structure that enables the magnetic fluid 40 to flow is connected, so that the magnetic fluid 40 can flow in the magnetic fluid cavity 101.

[0065] S3. Assemble the transformer;

[0066] The primary coil winding and the secondary coil winding are arranged around the core post 11 of the iron core 10, respectively.

[0067] Furthermore, the magnetic particles are preferably made of iron oxide; and / or the surfactant is made of silicon dioxide; and / or the carrier liquid is water or an organic solvent.

[0068] The transformer assembly method disclosed in this application is simple and easy to implement, which helps to reduce production costs and improve production efficiency, and facilitates the promotion and application of this transformer technology in industry.

[0069] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0071] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0072] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A transformer, characterized in that, It includes an iron core (10), a coil winding (20) and an adjustment system (70), the iron core (10) being made of an insulating material, the iron core (10) having a magnetofluid cavity (101) containing a flowable magnetofluid (40) comprising magnetic particles and a carrier liquid; The coil winding (20) includes a primary coil winding and a secondary coil winding, which are respectively wound on the core post (11) of the iron core (10). The regulating system (70) is connected to the magnetofluid cavity (101), and the regulating system (70) is capable of regulating the density of the magnetofluid (40) in the magnetofluid cavity (101); the regulating system (70) includes a buffer container (71) for storing the magnetofluid (40) and a delivery pump (72) connected to the buffer container (71), and the delivery pump (72) is connected to the magnetofluid cavity (101) through a delivery pipe (73). The buffer container (71) includes a first buffer container (711) for storing high-concentration magnetic fluid (40) and a second buffer container (712) for storing low-concentration magnetic fluid (40). The delivery pump (72) includes a first delivery pump (721) and a second delivery pump (722), the first delivery pump (721) being connected to the first buffer container (711) and the second delivery pump (722) being connected to the second buffer container (712); the delivery pipe (73) includes a first delivery pipe (731) and a second delivery pipe (732), the first delivery pipe (731) being connected to the first delivery pump (721) and the magnetohydrodynamic cavity (101), and the second delivery pipe (732) being connected to the second delivery pump (722) and the magnetohydrodynamic cavity (101); or, the delivery pump (72) is connected to the first buffer container (711) and the second buffer container (712) respectively, and a regulating valve is provided on the pipe connecting the delivery pump (72) to the first buffer container (711) and the second buffer container (712).

2. The transformer as described in claim 1, characterized in that, The magnetofluid cavity (101) is connected to the circulation pump (60) through the circulation pipe (50) so that the magnetofluid (40) can flow within the magnetofluid cavity (101).

3. The transformer as described in claim 2, characterized in that, The delivery pipe (73) is connected to the circulation pipe (50), and the connection point between the delivery pipe (73) and the circulation pipe (50) is located downstream of the circulation pump (60).

4. The transformer as described in claim 3, characterized in that, It also includes a heat dissipation system (30), to which the circulation pipe (50) is connected, and the heat dissipation system (30) includes an air-cooled radiator or a liquid-cooled radiator.

5. The transformer as described in claim 4, characterized in that, The transformer also includes a magnetofluid parameter detection component (80), which includes a temperature measuring element and a magnetic flux detection element.

6. The transformer as described in any one of claims 1-5, characterized in that, The core (10) includes a plurality of core posts (11), a first end structure (12) connected to the top of each core post (11) and a second end structure (13) connected to the bottom of each core post (11). The first end structure (12) has a first cavity (121), the second end structure (13) has a second cavity (131), and each core post (11) has a third cavity (111). Each third cavity (111) is connected to the first cavity (121) and the second cavity (131) to form the magnetohydrodynamic cavity (101).

7. A method for assembling a transformer, used to assemble a transformer as described in any one of claims 1-6, characterized in that, Including the following steps: To prepare the magnetic fluid (40), magnetic particles are selected, the magnetic particles and the carrier liquid are mixed in a preset ratio, and a surfactant is added to form the magnetic fluid (40). Assemble the iron core (10) and place the magnetic fluid (40) in the magnetic fluid cavity (101) to form the iron core (10). Assemble the transformer by arranging the primary coil winding and the secondary coil winding around the core post (11) of the iron core (10).

8. The transformer assembly method as described in claim 7, characterized in that, The magnetic particles are made of iron oxide (Fe3O4) particles; and / or, The surfactant is silicon dioxide; and / or, The carrier liquid is water or an organic solvent.

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