A transformer

Abstract

The present invention provides a transformer, which relates to the field of electrical technology. The transformer includes a first winding, a second winding, a first iron core, and a second iron core. The first iron core forms a receiving cavity, the second iron core is located in the receiving cavity, and the first iron core and the second iron core rotate relative to each other around a rotation axis. The first winding is wound on the first iron core, and the second winding is wound on the second iron core. During the relative rotation of the first iron core and the second iron core, a target angle formed by a cross section of the second winding and a cross section of the first winding continuously changes. By adjusting the size of the target angle, the size of the magnetic flux passing through the first winding or the second winding can be adjusted, thereby adjusting the size of the output voltage generated in the first winding or the second winding. In the process of adjusting the output voltage, it is only necessary to adjust the position of the adjusting iron yoke, and there is no need to stop the transformer and replace the output coil, so that the output voltage can be adjusted with power.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main function is to convert one level of voltage into another or more different levels of voltage. The transformer mainly includes a double-sided winding and an iron core. The winding on one side connected to the input voltage (AC voltage) generates an alternating magnetic flux in the iron core. Under the action of the alternating magnetic flux, an induced voltage is generated in the other winding, that is, the output voltage, to achieve the conversion from input voltage to output voltage. In a transformer, the ratio of input voltage to output voltage is equal to the ratio of the number of turns of the winding on the input voltage side to the winding on the output voltage side.

[0003] At present, in order to obtain different output voltages, a plurality of windings with different numbers of turns are usually arranged at the output end of the transformer. During the use of the transformer, different output voltages can be obtained by connecting the windings with different numbers of turns at the output end.

[0004] Since different output voltages correspond to output coils with different numbers of turns, when adjusting the output voltage, it is necessary to stop the transformer and replace the output coil to adjust the output voltage. The output voltage cannot be adjusted under power. Summary of the invention

[0005] The invention provides a transformer to solve the problem that the output voltage of the transformer cannot be adjusted live when the output voltage is adjusted.

[0006] In order to solve the above problems, the present invention discloses a transformer, comprising a first winding, a second winding, a first iron core and a second iron core;

[0007] The first iron core forms a receiving cavity, the second iron core is located in the receiving cavity, the first iron core and the second iron core rotate relative to each other around a rotation axis, and the first iron core and the second iron core are spaced apart by a preset distance;

[0008] The first winding surrounds the first central axis and is wound on the first iron core, and the shape of the first winding matches the accommodating cavity; the second winding surrounds the second central axis and is wound on the second iron core; the first central axis and the second central axis are straight lines perpendicular to the rotation axis;

[0009] When the first iron core and the second iron core rotate relative to each other, a cross section of the second winding forms a target angle with a cross section of the first winding.

[0010] Optionally, the first core forms a cylindrical accommodating cavity, and the rotation axis is the axis of the accommodating cavity; the first winding surrounds a first side and a second side in a longitudinal section of the first core and is wound on the first core; the first side and the second side are two sides located on both sides of the axis of the first core and are parallel to each other;

[0011] The second iron core is cylindrical in shape, and is located in the cylindrical accommodating cavity; the second winding surrounds the third side and the fourth side in the longitudinal section of the second iron core and is wound on the second iron core; the third side and the fourth side are two sides located on both sides of the axis of the second iron core and are parallel to each other.

[0012] Optionally, the first iron core forms a circular or polygonal accommodating cavity, and the first winding surrounds the first iron core and is wound on the inner side and / or outer side of the first iron core;

[0013] The second core is a circular or polygonal frame that matches the shape of the first core. The second core is located in the circular or polygonal accommodating cavity. The second winding surrounds the second core and is wound on the inner side and / or outer side of the second core.

[0014] Optionally, the first core and the second core are rectangular frames.

[0015] In order to solve the above problem, the present invention also discloses a transformer, comprising a first winding, a second winding, a first iron core and a second iron core;

[0016] The first iron core comprises a first iron yoke and a first core column, a first end of the first core column is connected to the first iron yoke, and the first winding is wound on the first core column;

[0017] The second iron core comprises a second iron yoke, a second core and a third core, the second core and the third core are arranged in parallel, and the first end of the second core and the first end of the third core are respectively connected to the second iron yoke; the second winding is wound on the second core or the third core;

[0018] The second end of the first core column is respectively arranged opposite to the second end of the second core column and the second end of the third core column; the first iron yoke and the second iron yoke form a first magnetic conductive circuit through the first core column and the second core column, and form a second magnetic conductive circuit through the first core column and the third core column, and the first iron yoke and the second iron yoke are movably cooperated to adjust the relative area between the second end of the first core column and the second end of the second core column and the second end of the third core column.

[0019] Optionally, the first iron yoke and the second iron yoke are bar-shaped iron yokes arranged in parallel, the first core column, the second core column and the third core column are arranged between the first iron yoke and the second iron yoke, and the first iron yoke and the second iron yoke move relative to each other.

[0020] Optionally, the first iron yoke is annular, and the first end of the first core column is connected to the inner wall of the first iron yoke;

[0021] The second iron yoke is arranged in the first iron yoke and rotates relatively to the first iron yoke. The second core column and the third core column are arranged on one side of the second iron yoke, and the other side cooperates with the inner wall of the first iron yoke to form the first magnetic conductive circuit and the second magnetic conductive circuit.

[0022] In order to solve the above problem, the present invention further discloses a transformer, comprising a three-phase first winding, a three-phase second winding, a first iron core and a second iron core;

[0023] The first iron core comprises a first iron yoke and three-phase first core columns, the first end of each phase of the first core column is respectively connected to one side of the first iron yoke, and one phase of the first winding is wound around the first core column of each phase;

[0024] The second iron core comprises a second iron yoke and a three-phase second core column, the second core column of each phase comprises a first sub-core column and a second sub-core column arranged in parallel, the first end of the first sub-core column and the first end of the second sub-core column are respectively connected to one side of the second iron yoke, and the first sub-core column or the second sub-core column of each phase of the second core column is wound with one phase of the second winding;

[0025] The second end of the first core column of each phase is arranged opposite to the second end of the first sub-core column and the second end of the second sub-core column in the second core column of one phase; the first iron yoke and the second iron yoke move relative to each other to adjust the relative area between the second end of the first core column of each phase and the corresponding second end of the first sub-core column and the second end of the second sub-core column.

[0026] Optionally, the first iron yoke is a circular iron yoke, and the first ends of the three-phase first core columns are respectively connected to the inner wall of the first iron yoke;

[0027] The second iron yoke is a cylindrical iron yoke with the same axial direction as the first iron yoke, and the first end of the first sub-core and the first end of the second sub-core in each phase of the second core are respectively connected to the outer wall of the second iron yoke;

[0028] The second iron yoke is arranged in the first iron yoke, and the first iron yoke and the second iron yoke rotate relatively.

[0029] Optionally, the first iron yoke and the second iron yoke are bar-shaped iron yokes arranged in parallel, the three-phase first core column and the three-phase second core column are arranged between the first iron yoke and the second iron yoke, and the first iron yoke and the second iron yoke move relative to each other.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] In an embodiment of the present invention, the transformer includes a first winding, a second winding, a first core, and a second core. The first core forms a receiving cavity, the second core is located in the receiving cavity, and the first core and the second core rotate relative to each other around the rotation axis. The first winding is wound around a first central axis perpendicular to the rotation axis on the first core, and the second winding is wound around a second central axis perpendicular to the rotation axis on the second core. During the relative rotation of the first core and the second core, the target angle formed by the cross section of the second winding and the cross section of the first winding is constantly changing. By adjusting the size of the target angle, the size of the magnetic flux passing through the first winding or the second winding can be adjusted, thereby adjusting the size of the output voltage generated in the first winding or the second winding. In the process of adjusting the output voltage, it is only necessary to adjust the position of the adjusting iron yoke, and there is no need to stop the transformer and replace the output coil, so that the output voltage can be adjusted with power. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A radial cross-sectional view of a transformer according to the first embodiment of the present invention is shown;

[0033] Figure 2 An axial cross-sectional view of a transformer according to the first embodiment of the present invention is shown;

[0034] Figure 3 A radial cross-sectional view of another transformer according to the first embodiment of the present invention is shown;

[0035] Figure 4 A front view of another transformer according to the first embodiment of the present invention is shown;

[0036] Figure 5 A front view of a transformer according to a second embodiment of the present invention is shown;

[0037] Figure 6 A radial cross-sectional view of another transformer according to the second embodiment of the present invention is shown;

[0038] Figure 7 A radial cross-sectional view of another transformer according to the second embodiment of the present invention is shown;

[0039] Figure 8 A radial cross-sectional view of a transformer according to a third embodiment of the present invention is shown;

[0040] Fig. 9A front view of a transformer according to a third embodiment of the present invention is shown. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Embodiment 1

[0043] Reference Figure 1 , shows a radial cross-sectional view of a transformer according to a first embodiment of the present invention, wherein the transformer includes a first winding 101 , a second winding 102 , a first iron core 103 and a second iron core 104 .

[0044] In this embodiment, the first core 103 is used to form a housing cavity for housing the second core 104 , and the first core 103 and the second core 104 can rotate relative to each other around the same rotation axis 1031 .

[0045] For example, Figure 2 As shown, Figure 2 An axial cross-sectional view of a transformer according to an embodiment of the present invention is shown, wherein the first core 103 may be a cylindrical core to form a cylindrical accommodation cavity. The second core 104 may be a cylindrical core matching the shape of the first core 103, and the radius of the second core 104 is smaller than that of the first core 103, so that the second core 104 may be disposed in the accommodation cavity formed by the first core 103.

[0046] The rotation axis 1031 may be the axis of the first core 103, that is, the axis of the cylindrical accommodation cavity. Figure 2 As shown, a support member 106 may be provided at one end of the first core 103, and a rotating shaft 107 may be provided on the axis (rotating axis 1031) of the first core 103. The support member 106 is fixedly connected to the rotating shaft 107 to fix the rotating shaft 107 at one end of the first core 103. The second core 104 may be provided with the same axial direction as the first core 103, and a preset distance may be provided between the first core 103 and the second core 104, and the rotating shaft 107 is rotatably connected to one end of the second core 104, so that the second core 104 can rotate around the rotating shaft 107 in the accommodating cavity, thereby realizing the relative rotation of the first core 103 and the second core 104.

[0047] In this embodiment, the second winding 102 is wound on the second core 104, the first winding 101 is wound on the first core 103, and the shape of the first winding 101 matches the shape of the accommodating cavity, so that the second winding 102 can be located inside the first winding 101. The first central axis 1011 is the axis of the first winding, and the first winding 101 is wound around the first central axis 1011 on the first core 103. The second central axis 1021 is the axis of the second winding 102, and the second winding 102 is wound around the second central axis 1021 on the second core 104. Since the first central axis 1011 and the second central axis 1021 are both perpendicular to the rotation axis 1031, the cross section of the first winding 101 and the cross section of the second winding 102 form a target angle 105 (the shaded part in the figure shows the target angle).

[0048] Example, combined Figure 1 and Figure 2 The first winding 101 surrounds the first side 1032 and the second side 1033 in the longitudinal section of the cylindrical first core 103, and is wound on the inner wall and / or outer wall (inner wall in the figure) of the first core 103. The first side 1032 and the second side 1033 are two sides located on both sides of the axis (rotation axis) of the first core 103 and parallel to each other. The first winding 101 is wound on the inner wall and / or outer wall of the first core 103, so that the shape of the first winding 101 matches the cylindrical accommodation cavity.

[0049] The second winding 102 surrounds the third side 1041 and the fourth side 1042 in the longitudinal section of the cylindrical second core 104 and is wound on the second core 104. The third side 1041 and the fourth side 1042 are two sides located on both sides of the axis (rotation axis 1031) of the second core 104 and are parallel to each other.

[0050] In this embodiment, the first winding 101 and the second winding 102 can be wound by copper wire or aluminum wire with high conductivity, the first winding 101 can be connected to an AC input voltage, and an alternating magnetic field is generated under the action of the AC input voltage, and the second winding 102 is located inside the first winding 101, that is, the second winding 102 is located in the alternating magnetic field generated by the first winding 101, so that the second winding 102 generates an output voltage under the action of the alternating magnetic field. Alternatively, the second winding 102 is connected to an AC input voltage, and an alternating magnetic field is generated under the action of the AC input voltage, and the first winding 101 generates an output voltage under the action of the alternating magnetic field, thereby realizing the conversion from input voltage to output voltage.

[0051] Taking the case where the first winding 101 is connected to the AC input voltage as an example, when the first iron core 103 and the second iron core 104 rotate relative to each other, since the first central axis 1011 and the second central axis 1021 are both perpendicular to the rotation axis 1031, the target angle 105 changes continuously. When the target angle 105 increases, the projected area of ​​the cross section of the second winding 102 on the cross section of the first winding 101 decreases (or increases), the magnetic flux passing through the second winding 102 decreases (or increases), and the output voltage generated by the second winding 102 decreases (or increases). On the contrary, when the target angle 105 decreases, the projected area of ​​the cross section of the second winding 102 on the cross section of the first winding 101 increases (or decreases), the magnetic flux passing through the second winding 102 increases (or decreases), and the output voltage generated by the second winding 102 increases (or decreases). The target angle 105 can be adjusted by relative rotation of the first iron core 103 and the second iron core 104, so that the magnetic flux passing through the second winding 102 can be adjusted, and further the output voltage generated by the second winding 102 can be adjusted. When adjusting the target angle 102, the magnetic flux passing through the second winding 102 can be gradually adjusted from large to small or from small to large, so that the output voltage can gradually change from large to small or from small to large, and the output voltage can be adjusted steplessly. In addition, when adjusting the target angle 105, it is not necessary to stop the transformer or replace the winding, and the output voltage can be adjusted with power on.

[0052] In an embodiment of the present invention, the transformer includes a first winding, a second winding, a first core, and a second core. The first core forms a receiving cavity, the second core is located in the receiving cavity, and the first core and the second core rotate relative to each other around the rotation axis. The first winding is wound around a first central axis perpendicular to the rotation axis on the first core, and the second winding is wound around a second central axis perpendicular to the rotation axis on the second core. During the relative rotation of the first core and the second core, the target angle formed by the cross section of the second winding and the cross section of the first winding is constantly changing. By adjusting the size of the target angle, the size of the magnetic flux passing through the first winding or the second winding can be adjusted, thereby adjusting the size of the output voltage generated in the first winding or the second winding. In the process of adjusting the output voltage, it is only necessary to adjust the position of the adjusting iron yoke, and there is no need to stop the transformer and replace the output coil, so that the output voltage can be adjusted with power.

[0053] Optionally, the first core forms a circular or polygonal accommodating cavity, and the first winding surrounds the first core and is wound on the inner side and / or outer side of the first core. The second core is a circular or polygonal frame matching the shape of the first core, the second core is located in the circular or polygonal accommodating cavity, and the second winding surrounds the second core and is wound on the inner side and / or outer side of the second core.

[0054] For example, the first core 103 and the second core 104 may be polygonal frames with matching shapes. Figure 3 and Figure 4 As shown, Figure 3 FIG. 2 shows a radial cross-sectional view of another transformer according to the first embodiment of the present invention. Figure 4 The front view of another transformer of the first embodiment of the present invention is shown, the first iron core 103 and the second iron core 104 can be a rectangular frame, the first iron core 103 forms a rectangular accommodating cavity, and the second iron core 104 is arranged in the rectangular accommodating cavity. The first winding 101 surrounds the first iron core 103 and is wound on the inner side and / or outer side of the first iron core 103 (the inner side in the figure), and the second winding 102 surrounds the second iron core 104 and is wound on the inner side and / or outer side of the second iron core 104 (the inner side in the figure). A rotating shaft 107 can be arranged on the inner wall of the first iron core 103, one end of the rotating shaft 107 is fixedly connected to the inner wall of the first iron core 103, and the other end is rotatably connected to the outer wall of the second iron core 104, and the second iron core 104 can rotate around the rotating shaft 107 inside the first iron core 103 to realize the relative rotation of the first iron core 103 and the second iron core 104.

[0055] In practical applications, the first core can be a circular frame, or a polygonal frame such as a pentagon or hexagon. The shape of the second core matches the shape of the first core and is arranged inside the first core. The specific structures of the first core and the second core can be set according to requirements, and this embodiment does not limit this. The first core and the second core are circular or polygonal frames, which can reduce the volume of the first core and the second core, thereby reducing the volume of the entire transformer.

[0056] Embodiment 2

[0057] Reference Figure 5 , shows a front view of a transformer according to a second embodiment of the present invention, the transformer comprising a first winding 201, a second winding 202, a first iron core and a second iron core.

[0058] The first core includes a first iron yoke 203 and a first core 204, the first end of the first core 204 is connected to the first iron yoke 203, and the first winding 201 is wound on the first core 204. The second core includes a second iron yoke 205, a second core 206 and a third core 207, the second core 206 and the third core 207 are arranged in parallel, and the first end of the second core 206 and the first end of the third core 207 are respectively connected to the second iron yoke 205, and the second winding 202 is wound on the second core 206 or the third core 207. The second end of the first core 204 is arranged opposite to the second end of the second core 206 and the second end of the third core 207. The first iron yoke 203 and the second iron yoke 205 form a first magnetic conductive loop through the first core 204 and the second core 206, and form a second magnetic conductive loop through the first core 204 and the third core 207. The first iron yoke 203 and the second iron yoke 205 are movably matched to adjust the relative areas of the second end of the first core 204 and the second end of the second core 206 and the second end of the third core 207. In the first core, the second core and the third core, the first end and the second end are opposite ends.

[0059] In this embodiment, the first winding 201 and the second winding 202 can be wound by copper wire or aluminum wire with high conductivity, and the first iron yoke 203 and the first core 204 can be stacked by silicon steel sheets. The second end of the first core 204 is respectively arranged opposite to the second end of the second core 206 and the second end of the third core 207, and the first iron yoke and the second iron yoke move relative to each other to achieve active cooperation, so as to adjust the relative area between the second end of the first core 204 and the second end of the second core 206 and the second end of the third core 207.

[0060] For example, the first iron yoke 203 and the second iron yoke 205 are bar iron yokes arranged in parallel, the first core column 204, the second core column 206 and the third core column 207 are arranged between the first iron yoke 203 and the second iron yoke 205, and the first iron yoke 203 and the second iron yoke 205 move relatively.

[0061] like Figure 5 As shown, the first iron yoke 203 and the second iron yoke 205 are parallel strip iron yokes, the first core column 204 is arranged on a side close to the second iron yoke 205, and the first end of the first core column 204 is fixedly connected to the first iron yoke 203. The second core column 206 and the third core column 207 are arranged on a side close to the first iron yoke 203, the first end of the second core column 206 is fixedly connected to the second iron yoke 205, and the first end of the third core column 207 is fixedly connected to the second iron yoke 205, so that the second end of the first core column 204 is arranged opposite to the second end of the second core column 206 and the second end of the third core column 207 respectively.

[0062] A guide rail 208 is fixedly installed on one side of the first iron yoke 203 close to the second iron yoke 205, and a slider 209 is fixedly installed on one side of the second iron yoke 205 close to the first iron yoke 203. The guide rail 208 and the slider 209 are slidably matched to realize the sliding connection between the first iron yoke 203 and the second iron yoke 205. At the same time, the guide rail 208 and the slider 209 can be made of stacked silicon steel sheets with high magnetic conductivity. When the sliding connection between the first iron yoke 203 and the second iron yoke 205 is realized, the magnetic connection between the first iron yoke 203 and the second iron yoke 205 can be realized. The first iron yoke 203, the first core column 204, the second core column 206, the second iron yoke 205, the slider 209 and the guide rail 208 constitute a first magnetic conductive circuit. Similarly, the first iron yoke 203, the first core column 204, the third core column 207, the second iron yoke 205, the slider 209 and the guide rail 208 constitute a second magnetic conductive circuit.

[0063] The first iron yoke 203 and the second iron yoke 205 are slidably matched under the action of the guide rail 208 and the slider 209. When the first iron yoke 203 and the second iron yoke 205 slide relative to each other, the relative area between the second end of the first core column 204 and the second end of the second core column 206 and the second end of the third core column 207 can be adjusted. The relative position of the first core column and the first iron yoke, as well as the relative position of the second core column, the third core column and the second iron yoke can be set according to demand, and it is only necessary to make the second end of the first core column relative to the second end of the second core column and the second end of the third core column. It should be noted that the first iron yoke and the second iron yoke can also form the first magnetic conductive circuit and the second magnetic conductive circuit in other ways, and this embodiment does not limit this.

[0064] In practical applications, the first winding 201 wound on the first stem 204 can be connected to an input voltage, and an alternating magnetic field is generated under the action of the input voltage. Since the second end of the second stem 206 and the second end of the third stem 207 are respectively arranged opposite to the second end of the first stem 204, the second winding 202 wound on the second stem 206 or the third stem 207 is located in the alternating magnetic field generated by the first winding 201. Under the action of the alternating magnetic field, the second winding 202 generates an output voltage, realizing the conversion from the input voltage to the output voltage.

[0065] like Figure 5As shown, the second winding 202 is wound on the second core 206. When the first iron yoke 203 slides to the left, the relative area between the second end of the first core 204 and the second end of the second core 206 gradually increases, and the relative area between the second end of the first core 204 and the second end of the third core 207 gradually decreases, so that the magnetic resistance of the first magnetic conductive circuit decreases, the magnetic flux passing through the first magnetic conductive circuit increases, the magnetic resistance of the second magnetic conductive circuit increases, the magnetic flux passing through the second magnetic conductive circuit decreases, and the output voltage generated in the second winding 202 located in the first magnetic conductive circuit increases. On the contrary, when the first iron yoke 203 slides to the right, the magnetic resistance of the first magnetic conductive circuit increases, the magnetic flux passing through the first magnetic conductive circuit decreases, the magnetic resistance of the second magnetic conductive circuit decreases, the magnetic flux passing through the second magnetic conductive circuit increases, and the output voltage generated in the second winding 202 located in the first magnetic conductive circuit decreases. When the first iron yoke and the second iron yoke move relative to each other, the magnetic flux in the first magnetic conductive circuit can be gradually adjusted from large to small or from small to large, so that the output voltage can gradually change from large to small or from small to large, thereby realizing stepless regulation of the output voltage. Moreover, when adjusting the output voltage, there is no need to stop the transformer or replace the winding, and the output voltage can be adjusted under power.

[0066] In an embodiment of the present invention, the transformer includes a first winding, a second winding, a first iron core and a second iron core, the first iron core includes a first iron yoke and a first core, the first end of the first core is connected to the first iron yoke, and the first winding is wound on the first core. The second iron core includes a second iron yoke, a second core and a third core, the second core and the third core are arranged in parallel, and the first end of the second core and the first end of the third core are respectively connected to the second iron yoke, and the second winding is wound on the second core or the third core. The second end of the first core is respectively arranged opposite to the second end of the second core and the second end of the third core, the first iron yoke and the second iron yoke form a first magnetic conductive loop through the first core and the second core, and form a second magnetic conductive loop through the first core and the third core, and the first iron yoke and the second iron yoke are movably matched to adjust the relative area of ​​the second end of the first core with the second end of the second core and the second end of the third core. In the process of adjusting the output voltage, it is only necessary to adjust the position of the adjustment iron yoke, and it is not necessary to stop the transformer and replace the output coil, so that the output voltage can be adjusted with electricity.

[0067] Optionally, the first iron yoke 203 is annular, and the first end of the first core column 204 is connected to the inner wall of the first iron yoke 203. The second iron yoke 205 is arranged in the first iron yoke 203, and one side of the second iron yoke 205 cooperates with the inner wall of the first iron yoke 203 to form a first magnetic conductive loop and a second magnetic conductive loop.

[0068] In this embodiment, the first iron yoke 203 and the second iron yoke 205 can rotate relative to each other. Figure 6 As shown, Figure 6The radial cross-sectional view of another transformer of the second embodiment of the present invention is shown, the first iron yoke 203 is a circular iron yoke, the second iron yoke 205 is a block-shaped or cylindrical iron yoke, and the second iron yoke 205 is arranged inside the first iron yoke 203. The first end of the first core column 204 is fixedly connected to the inner wall of the first iron yoke 203, the second core column 206 and the third core column 207 are arranged side by side on a side close to the first core column 204, and the first end of the second core column 206 and the first end of the third core column 207 are fixedly connected to the outer wall of the second iron yoke 205, so that the second end of the first core column 204 is arranged opposite to the second end of the second core column 206 and the second end of the third core column 207 respectively. The third iron yoke 210 ( Figure 6 The first core column and the third iron yoke are arranged opposite to each other), so that the second iron yoke 205 can cooperate with the inner wall of the first iron yoke 203 through the third iron yoke 210, so that the first iron yoke 203, the first core column 204, the second core column 206, the second iron yoke 205 and the third iron yoke 210 form a first magnetic conductive loop, and the first iron yoke 203, the first core column 204, the third core column 207, the second iron yoke 205 and the third iron yoke 210 form a second magnetic conductive loop. Among them, the third iron yoke 210 and the first iron yoke 203 can be integrally formed, or the third iron yoke 210 can be a part of the second iron yoke 205. The specific structure of the second iron yoke cooperating with the inner wall of the first iron yoke can be set according to needs, and this embodiment does not limit this.

[0069] The second iron yoke 205 can rotate around the axis of the annular second iron yoke 203 to adjust the relative area between the second end of the first core column 204 and the second end of the second core column 206 and the second end of the third core column 207. Figure 2 Alternatively, the second iron yoke 205 can also move within the second iron yoke 203 to adjust the relative area between the second end of the first core column 204 and the second end of the second core column 206 and the second end of the third core column 207. The specific principle of realizing the active cooperation between the first iron yoke and the second iron yoke can be set according to needs, and this embodiment does not limit this.

[0070] like Figure 7 As shown, Figure 7 A radial cross-sectional view of another transformer according to the second embodiment of the present invention is shown. Figure 7 As shown, the first core column may be composed of a first sub-core column 2041 and a second sub-core column 2042 , and the first sub-core column 2041 and the second sub-core column 2042 are arranged on the inner wall of the first iron yoke 203 opposite to each other.

[0071] Similarly, the second stem may be composed of a third sub-stem 2061 and a fourth sub-stem 2062, which are respectively arranged on both sides of the second iron yoke 205. And the third stem may be composed of a fifth sub-stem 2071 and a sixth sub-stem 2072, which are respectively arranged on both sides of the second iron yoke 205, the third sub-stem 2061 and the fifth sub-stem 2071 are arranged in parallel, and the fourth sub-stem 2062 and the sixth sub-stem 2072 are arranged in parallel. In practical applications, the specific structures of the first stem, the second stem, the third stem, the first iron yoke and the second iron yoke can be set according to requirements, and this embodiment does not limit this.

[0072] Embodiment 3

[0073] Reference Figure 8 , shows a radial cross-sectional view of a transformer according to a third embodiment of the present invention, wherein the transformer comprises a three-phase first winding, a three-phase second winding, a first iron core and a second iron core.

[0074] The first iron core includes a first iron yoke 301 and a three-phase first core 302, the first end of each phase first core 302 is respectively connected to one side of the first iron yoke 301, and a first winding 305 of one phase is wound on each phase first core 302. The second iron core includes a second iron yoke 303 and a three-phase second core, each phase second core includes a first sub-core 3041 and a second sub-core 3042 arranged in parallel, the first end of the first sub-core 3041 and the first end of the second sub-core 3042 are respectively connected to one side of the second iron yoke 303, and a second winding 306 of one phase is wound on the first sub-core 3041 or the second sub-core 3042 of each phase second core. The second end of each phase first core 302 is arranged opposite to the second end of the first sub-core 3041 and the second end of the second sub-core 3042 of one phase second core. The first iron yoke 301 and the second iron yoke 303 move relative to each other to adjust the relative area between the second end of the first core 302 of each phase and the second end of the corresponding first sub-core 3041 and the second end of the second sub-core 3042. In the first core, the first sub-core and the second sub-core, the first end and the second end are opposite ends, and the first iron core and the second iron core can be stacked by silicon steel sheets.

[0075] For example, the first iron yoke 301 is an annular iron yoke, and the first ends of the three-phase first core columns 302 are respectively connected to the inner wall of the first iron yoke 301. The second iron yoke 303 is a cylindrical iron yoke with the same axial direction as the first iron yoke 301, and the first end of the first sub-core column 3041 and the first end of the second sub-core column 3042 in each phase of the second core column are respectively connected to the outer wall of the second iron yoke 303. The second iron yoke 303 is arranged in the first iron yoke, and the first iron yoke 301 and the second iron yoke 302 rotate relative to each other.

[0076] In this embodiment, the first iron yoke 301 may be a circular annular iron yoke, and the second iron yoke 303 may be a cylindrical iron yoke that matches the shape of the first iron yoke 301. The diameter of the second iron yoke 303 is smaller than the inner diameter of the first iron yoke 301, so that the second iron yoke 303 can be located on the inner side of the first iron yoke 301, and the axial direction of the second iron yoke 303 and the first iron yoke 301 can be the same, so that the second iron yoke 303 can be rotated inside the first iron yoke 301, or the first iron yoke 301 can be rotated around the second iron yoke 303. The structure for realizing the relative rotation of the first iron yoke and the second iron yoke can refer to the structure in the first embodiment. Figure 2 It should be noted that in practical applications, the first iron yoke and the second iron yoke can be in other shapes, such as the first iron yoke is a triangular iron yoke and the second iron yoke is a block iron yoke, as long as the second end of the first core column is arranged relative to the second end of the first sub-core column and the second end of the second sub-core column.

[0077] The three-phase first core pillars 302 are arranged at intervals on the inner wall of the first iron yoke 301, and the first ends of the three-phase first core pillars 302 are respectively fixedly connected to the inner wall of the first iron yoke 301. One of the first windings 305 of each phase is wound on the first core pillar 302 of each phase. In the second core pillar of each phase, the first sub-core pillar 3041 and the second sub-core pillar 3042 are arranged in parallel, and the first end of the first sub-core pillar 3041 and the first end of the second sub-core pillar 3042 are respectively connected to the outer wall of the second iron yoke 303. Among them, the first core pillar 302 of each phase is arranged opposite to the second core pillar of one phase of the three-phase second core pillars, so that the second end of the first core pillar 302 of each phase is arranged opposite to the second end of the first sub-core pillar 3041 and the second end of the second sub-core pillar 3042 of one of the second core pillars of one phase.

[0078] like Figure 8 As shown, when the second iron yoke 303 is cylindrical, the second iron yoke 303 and the three-phase second core column can be integrally formed, and the first sub-core column 3041 and the second sub-core column 3042 of each phase second core column are formed on the outer wall of the second iron yoke 303. In practical applications, the three-phase second core column can also be arranged on the outer wall of the second iron yoke in other ways, and the specific structure of the second core can be set according to requirements, which is not limited in this embodiment.

[0079] In this embodiment, the second end of the first core column 302 is arranged opposite to the second end of the first sub-core column 3041 and the second end of the second sub-core column 3042, and the first iron yoke 301 and the second iron yoke 303 can pass through the three-phase first core column and the first sub-core column and the second sub-core column of each phase to form a magnetic conductive circuit. In actual use, the three-phase first winding 305 is connected to the three-phase input voltage respectively, and the three-phase second winding 306 is connected to the three-phase output voltage respectively. The first winding 305 generates an alternating magnetic field under the action of the input voltage, and the second end of the first core column 302 is arranged opposite to the second end of the first sub-core column 3041 and / or the second end of the second sub-core column 3042. When the second winding 306 wound on the first sub-core column 3041 or the second sub-core column 3042 is located in the alternating magnetic field, an induced voltage is generated under the action of the alternating magnetic field to achieve the conversion from the input voltage to the output voltage. The specific principle of adjusting the voltage can be referred to the second embodiment, and this embodiment will not be repeated.

[0080] In an embodiment of the present invention, the transformer includes a three-phase first winding, a three-phase second winding, a first iron core and a second iron core. The first iron core includes a first iron yoke and a three-phase first core, the first ends of the three-phase first cores are respectively connected to one side of the first iron yoke, and the first winding of each phase is wound on one of the first cores. The second iron core includes a second iron yoke and a three-phase second core, each phase second core includes a first sub-core and a second sub-core arranged in parallel, the first end of the first sub-core and the first end of the second sub-core are respectively connected to one side of the second iron yoke, and the second winding of each phase is wound on the first sub-core or the second sub-core in one of the second cores. The second end of each phase first core is arranged relative to the second end of the first sub-core and the second end of the second sub-core of one of the phases. The first iron yoke and the second iron yoke move relative to each other to adjust the relative area between the second end of each phase first core and the second end of the corresponding first sub-core and the second end of the second sub-core. In the process of adjusting the output voltage, it is only necessary to adjust the position of the adjusting iron yoke, and there is no need to stop the transformer and replace the output coil, so that the output voltage can be adjusted under power.

[0081] Optionally, the first iron yoke and the second iron yoke are strip iron yokes arranged in parallel, the three-phase first core column and the three-phase second core column are arranged between the first iron yoke and the second iron yoke, and the first iron yoke and the second iron yoke move relative to each other.

[0082] For example, Fig. 9 As shown, Fig. 9The front view of a transformer of the third embodiment of the present invention is shown, wherein the first iron yoke 301 and the second iron yoke 303 are parallel strip iron yokes, the three-phase first core pillars 302 are arranged at intervals on the side close to the second iron yoke 303, and the three-phase second core pillars are arranged at intervals on the side close to the first iron yoke 301. The first iron yoke 301 and the second iron yoke 303 form a magnetic conductive circuit through the three-phase first core pillars 302 and the first sub-core pillars 3041 and the second sub-core pillars 3042 in each phase second core pillar. The first core pillar 302 of each phase is arranged opposite to the second core pillar of one phase, so that the second end of the first core pillar 302 of each phase is arranged opposite to the second end of the first sub-core pillar 3041 and the second end of the second sub-core pillar 3042 of one phase second core pillar. The second winding 305 of each phase corresponds to one phase second core pillar and is wound on the corresponding first sub-core pillar 3041 or second sub-core pillar 3042.

[0083] In this embodiment, the first iron yoke and the second iron yoke are parallel strip iron yokes, and when the first iron yoke and the second iron yoke slide relative to each other, the magnitude of the output voltage generated by the second winding of each phase can be adjusted. The specific principle of adjusting the voltage can be referred to in Example 2, and the structure for realizing the relative sliding of the first iron yoke and the second iron yoke can be referred to in Example 2, and this embodiment does not limit this.

[0084] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0085] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0086] The transformer and method provided by the present invention, as well as an electronic device, are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A transformer, characterized in that: comprising a first winding, a second winding, a first iron core and a second iron core; The first iron core forms a receiving cavity, the second iron core is located in the receiving cavity, the first iron core and the second iron core rotate relative to each other around a rotation axis, and the first iron core and the second iron core are spaced apart by a preset distance; The first winding surrounds the first central axis and is wound on the first iron core, and the shape of the first winding matches the accommodating cavity; the second winding surrounds the second central axis and is wound on the second iron core; the first central axis and the second central axis are straight lines perpendicular to the rotation axis; The first iron core forms a cylindrical accommodating cavity, and the rotation axis is the axis of the accommodating cavity; the first winding surrounds the first side and the second side in the longitudinal section of the first iron core and is wound on the first iron core; the first side and the second side are two sides located on both sides of the axis of the first iron core and are parallel to each other; The second core is cylindrical in shape, and is located in the cylindrical accommodation cavity; the second winding surrounds the third side and the fourth side in the longitudinal section of the second core and is wound on the second core; the third side and the fourth side are two sides located on both sides of the axis of the second core and are parallel to each other; When the first iron core and the second iron core rotate relative to each other, the cross section of the second winding forms a target angle with the cross section of the first winding; The first core forms a circular or polygonal accommodating cavity, and the second core is a circular or polygonal frame matching the shape of the first core.

2. The transformer according to claim 1, characterized in that: The first winding surrounds the first iron core and is wound on the inner side and / or the outer side of the first iron core; The second iron core is located in the circular or polygonal accommodating cavity, and the second winding surrounds the second iron core and is wound on the inner side and / or the outer side of the second iron core.

3. The transformer according to claim 2, characterized in that: The first core and the second core are rectangular frames.

4. A transformer, characterized in that: comprising a first winding, a second winding, a first iron core and a second iron core; The first iron core comprises a first iron yoke and a first core column, a first end of the first core column is connected to the first iron yoke, and the first winding is wound on the first core column; The second iron core comprises a second iron yoke, a second core and a third core, the second core and the third core are arranged in parallel, and the first end of the second core and the first end of the third core are respectively connected to the second iron yoke; the second winding is wound on the second core or the third core; The second end of the first core is respectively arranged opposite to the second end of the second core and the second end of the third core; the first iron yoke and the second iron yoke form a first magnetic conductive loop through the first core and the second core, and form a second magnetic conductive loop through the first core and the third core, and the first iron yoke and the second iron yoke are movably matched to adjust the relative areas of the second end of the first core and the second end of the second core and the second end of the third core; The first iron yoke and the second iron yoke are bar-shaped iron yokes arranged in parallel; or the first iron yoke is in a circular ring shape.

5. The transformer according to claim 4, characterized in that: The first core column, the second core column and the third core column are arranged between the first iron yoke and the second iron yoke, and the first iron yoke and the second iron yoke move relatively.

6. The transformer according to claim 4, characterized in that: The first end of the first core column is connected to the inner wall of the first iron yoke; The second iron yoke is arranged in the first iron yoke and rotates relatively to the first iron yoke. The second core column and the third core column are arranged on one side of the second iron yoke, and the other side cooperates with the inner wall of the first iron yoke to form the first magnetic conductive circuit and the second magnetic conductive circuit.

7. A transformer, characterized in that: It includes a three-phase first winding, a three-phase second winding, a first iron core and a second iron core; The first iron core comprises a first iron yoke and three-phase first core columns, the first end of each phase of the first core column is respectively connected to one side of the first iron yoke, and one phase of the first winding is wound around the first core column of each phase; The second iron core comprises a second iron yoke and a three-phase second core column, the second core column of each phase comprises a first sub-core column and a second sub-core column arranged in parallel, the first end of the first sub-core column and the first end of the second sub-core column are respectively connected to one side of the second iron yoke, and the first sub-core column or the second sub-core column of each phase of the second core column is wound with one phase of the second winding; The second end of the first core column of each phase is arranged opposite to the second end of the first sub-core column and the second end of the second sub-core column of the second core column of one phase; the first iron yoke and the second iron yoke move relative to each other to adjust the relative area between the second end of the first core column of each phase and the second end of the corresponding first sub-core column and the second end of the second sub-core column; The first iron yoke is a circular ring-shaped iron yoke, and the second iron yoke is a cylindrical iron yoke with the same axial direction as the first iron yoke; or the first iron yoke and the second iron yoke are bar-shaped iron yokes arranged in parallel.

8. The transformer according to claim 7, characterized in that: The first ends of the three-phase first core columns are respectively connected to the inner walls of the first iron yoke; The first end of the first sub-core and the first end of the second sub-core of each phase are respectively connected to the outer wall of the second iron yoke; The second iron yoke is arranged in the first iron yoke, and the first iron yoke and the second iron yoke rotate relatively.

9. The transformer according to claim 7, characterized in that: The three-phase first core and the three-phase second core are arranged between the first iron yoke and the second iron yoke, and the first iron yoke moves relatively to the second iron yoke.

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