TW200841364A - High-voltage transformer with adjustable magnetic leakage - Google Patents

Abstract

A high-voltage transformer with adjustable magnetic leakage includes a winding rack unit, a primary coil, a secondary coil and an iron core unit. The winding rack unit includes a primary coil rack on which a primary coil segment is formed, and two secondary coil racks on each of which a secondary coil segment is formed. The winding diameter of the primary coil segment is larger than that of the secondary coil segment by two times. The iron core unit includes a first iron core, a second iron core connected to the first iron core, a primary magnetic flux area close to the primary coil and two secondary magnetic flux areas close to the two secondary coils. The first iron core has a primary segment, two secondary segments extended from the primary segment, two first inner faces, and two first side faces. The second iron core has two secondary terminals, two second inner faces, two second side faces, and two secondary contact faces respectively formed on the two secondary terminals.

Description

200841364 IX. Description of the Invention: [Technical Field] The present invention relates to a transformer, and more particularly to a high-voltage adjustable leakage magnetic flux which can reduce the temperature rise of the primary coil and adjust the magnetic flux leakage of the coil to make the left and right magnetic reluctance symmetrical. transformer. [Prior Art] According to the transformer disclosed in the U.S. Patent No. US Pat. No. 7,150, 785, and the Japanese Patent Application No. 2001-148318, the primary side reluctance is equal to the secondary side reluctance, and the magnetic flux of the magnetic core can be reduced. leakage. To increase the magnetic core of the magnetic core, a control core is added between the human side and the secondary side. However, 'this control core must be adjusted to a very precise machining (usually 〇. 〇1匪 tolerance) to achieve leakage magnetic beam adjustment, and meet the delivery specifications within ±7.5% of the leakage inductance, and then with the classification In this way, the leakage inductance is made of soil 2/〇 as 'class' and then placed on the same drive circuit board to meet the electrical requirements of the final product. The way to control the magnetic flux leakage is achieved by controlling the magnetic flux leakage mode of the iron core to attract the middle pillar iron core. The magnetic flux in the middle pillar magnetic core must reach the control magnetic core through the air gap, and because the air and the iron core The magnetic permeability coefficient (#) is 2000 times different from that of the south, which causes the control core to not easily suck out the magnetic flux in the middle column core to form magnetic flux leakage. Therefore, in the case of manual assembly, as long as there is a slight assembly failure, the product may be defective and cannot meet the stability required for mass production. Since the primary coil drives the two secondary coils at the same time, the winding diameter of the primary coil is equal to the sum of the winding diameters of the secondary coil, so that 5 200841364

The winding cross-sectional area of the primary coil is equal to the sum of the winding cross-sectional areas of the secondary coil. Under this condition, the total magnetic reluctance of the primary side is approximately equal to the sum of the total reluctances of the two secondary sides, that is, the magnetic lines of force are not forced to leak due to the change in magnetoresistance to form a magnetic flux leakage. According to the known formula ^ = , the inductance L is proportional to the cross-sectional area A of the winding. Therefore, by increasing the winding cross-sectional area A of the primary coil, the inductance of the primary coil is increased, thereby increasing the effectiveness of the primary coil. Flux, effectively controlling the rise in temperature of the primary coil.

However, after the first core and the second core are assembled, the structure of the core and the configuration of the winding have determined the size of the magnetic flux leakage of the coil, and the structure that can be adjusted can be adjusted. In addition, the iron core is made of powder U, because the sintering size will result in sintering tolerance due to shrinkage of the hot clothes and the upper and lower iron cores will have combined tolerances, and the left and right magnetic reluctances are usually not equal, resulting in the secondary coil entering the resonance work, especially There is a difference in the power transfer between the dead & and the left and right sides of the interest, causing other electrical quality problems to occur. In addition, the transformer disclosed in the U.S. Patent No. US Pat. No. 7,78, sb2, is limited in the design of the second core when the ramie is manufactured by the ramie, and the grinding process is very complicated. The manufacturer is unable to mass produce this transformer. ° [Summary of the content] Temperature rise due to two! The object of the invention is to provide a core structure capable of reducing the large:: magnetic flux leakage of the primary coil to adjust the contact surface of the core; and to change the secondary magnetic resonance symmetry of the secondary side by means of sub-movement At the same time, the side reluctance is symmetrically adjusted so that the left j has a switchable transformer. 200841364 Thus, the transformer of the present invention comprises a bobbin unit, a primary coil, a secondary coil, and a core unit. The bobbin unit includes a primary bobbin forming a primary coil segment, and two secondary bobbins each forming a primary coil segment, the primary coil segment having a winding diameter greater than the winding of the secondary coil segment Double the diameter. The primary coil is wound around the primary coil segment, and the secondary coil is wound around the secondary coil segment. The core unit is assembled on the bobbin unit, and includes a first iron core disposed on the bobbin unit, and a second iron core connected to the first iron core, one formed on the first core a primary magnetic flux region between the iron core and the second core adjacent to the primary coil, and a secondary magnetic flux formed between the first core and the second core and adjacent to the secondary coil a first core having a primary segment disposed on the primary bobbin, two extending from the primary segment and spaced apart from the secondary segment of the secondary coil former, and two formed in the secondary segment a first inner surface opposite to the inner side of the step, and a second inner surface opposite to the first inner surface, the second core has two secondary ends respectively connected to the second stage, and two are respectively formed on the second end a second inner surface opposite to the second secondary end, opposite to the second side of the second inner surface, and two secondary contact surfaces respectively formed at the end of the primary stage and connected to the secondary stage . The invention has the beneficial effects that: because the winding diameter of the primary coil segment is greater than twice the winding diameter of the secondary coil segment, the magnetic flux is forced to leak due to the change of the magnetic resistance of the central pillar core, so that the magnetic flux is forced to leak. The control core controls the size of the leakage inductance (magnetic flux) and increases the inductance of the primary coil, thereby increasing the effective magnetic flux of the primary coil and effectively controlling the rise of the temperature of the primary line 200841364. Further, since the magnetic resistance of the primary side winding region is not equal to the magnetic resistance of the magnetic arm of the secondary winding portion, the magnetic lines of force generated by the primary side coil are forcibly pressed into the air to form a leakage magnetic flux due to the change in magnetic resistance. However, the optimum area for controlling this leakage magnetic flux, i.e., near the region where the magnetoresistance changes, is located between the primary magnetic flux region and the two secondary magnetic flux regions. Therefore, one more is added between the primary magnetic flux region and the two secondary magnetic flux regions.

Leakage magnetic circuit adjustment structure, which can adjust the leakage magnetic flux of the whole transformer according to the characteristics of the final core sintering, thereby controlling the leakage magnetic flux and controlling the leakage inductance, thereby reducing the sintering caused by the core sintering. The post-process classification caused by dimensional changes reduces the cost of mass production. The parts of the upper and lower iron cores are combined in different sizes, and the difference in the magnetic arms is adjusted by the combined magnetic reluctance area, so that the left and right magnetic arms are symmetrical. In addition, by grinding the core depth to control the grinding tolerance to +0.05 to meet the electrical delivery specifications, and the leakage inductance is within ±2% of the conditions, no need to classify can be placed in the same drive On the board to meet the electrical requirements of the final product. Therefore, with the method of forcing the magnetic core of the middle column, and forcing the magnetic flux leakage, the tolerance of the control 放 plus = can be relaxed to a level that can be mass-produced, and meets the strict requirements of the customer. In the current U.S. (4) mechanical grinding processing requirements, this hair = can achieve a large number of manufacturing purposes, and can require 'significantly reduce production costs, while increasing product yield. Moreover, the structure of the second core is simpler than conventional, and the cost of the actual 8 200841364 == fee can be reduced, and the actual large amount of defective rate, shipping cost, and inventory increase can be reduced. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings.

Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. As shown in FIG. 1, a first preferred embodiment of the transformer of the present invention comprises a bobbin unit 1 'a primary coil 2, a secondary coil 3, and a core unit 4 〇5 a primary bobbin 15' forming a primary coil section 11 and a secondary bobbin 16 each forming a primary coil section 12, the winding diameter of the primary coil section 11 being greater than the secondary coil section 丨2 The winding diameter is twice as large. The primary coil 2 is wound around the primary line segment 11, and the secondary coil 3 is wound around the secondary coil segment 12, respectively. The core unit 4 includes a first core 41 that is disposed on the bobbin unit 1 , and a second core 42 that is coupled to the first core 41 , and is formed on the first core 41 . The second core 42 is adjacent to the primary magnetic flux region 43 of the primary coil 2, and is formed between the first core 41 and the second core 42 and adjacent to the secondary magnetic pole of the secondary coil 3. a pass region 44, and a magnetic flux leakage region 45 between the primary coil 2 and the secondary coil 3, the second 9 200841364 core 42 and the first core 41 form a connection between the primary coil 2 and the The magnetic path of the secondary coil 3. The first core 41 has a primary section 411' extending through the primary bobbin 15 and extending from the primary section 4Π and spaced apart from the secondary section 412 of the secondary coil former 16 to form a first inner surface 414 disposed opposite the second stage 412 and opposite to the first side 413 ′ of the two first inner surfaces 414. The second core 42 has two second stages 412 respectively connected to the second stage 412 The second end portion 423 is formed on the inner side of the second-stage end portion 423 and opposite to the second inner surface 425, and opposite to the first side surface 424 ′ of the second second inner surface 425. The magnetically permeable end portions 426, and two are respectively formed on the secondary end portion 423 and connected to the secondary contact portion 422. In addition to the core composition shown in Fig. 1, as shown in Fig. 2, the magnetically permeable end portion 426 may be formed on the first core 41. As shown in FIG. 3, the opening between the primary ends 423 of the whai may also be semi-circular. As shown in Fig. 4, the end of the second core 42 opposite to the secondary end portion 423 can also be reduced inwardly to a primary end portion 427. As shown in Fig. 5, the first core 41 and the second core 42 may also be a γ-type iron core. Moreover, the primary bobbin 15 may be disposed on the first core 41 and the second core in a y-axis perpendicular to the X-axis direction. Between 42. As shown in FIG. 6, the primary segment 411 is disposed along a γ-axis perpendicular to the X-axis direction, and the secondary segment 412 is extended from the end of the secondary terminal 4 423 toward the primary segment 411 in the X-axis direction. . It should be noted that, as shown in FIG. 7( a ), the distance between the two second side faces 424 10 200841364 is greater than the distance between the first side faces 413 , and the area of the second-level contact faces 422 is greater than The effective cross-sectional area of the secondary magnetic flux region 44. As shown in FIG. 7(b), when the second core 42 is moved to the left, the effective cross-sectional area of the secondary magnetic flux region 44 on the left side is constant, and the secondary magnetic flux region 44 on the right side is unchanged. The effective cross-sectional area changes. As shown in FIG. 7(c), when the second core 42 is moved to the right, the effective sectional area of the secondary magnetic flux region 44 on the left side is changed, and the effective sectional area of the secondary magnetic flux region 44 on the right side is changed. constant. Therefore, the user can thereby change the magnetic flux passing through the secondary magnetic flux region 44 to adjust the magnetic flux symmetry of the left and right sides while making the electrical power transfer symmetrical. This adjustment method is to adjust the contact area to achieve the purpose of adjusting the magnetic flux. In use, since the winding diameter of the primary coil segment u is greater than the winding diameter of the secondary coil and the coils 4 and 12, the inductance l of the primary coil 2 can be increased, thereby increasing the primary coil 2 Effective flux to effectively control the rise in temperature. In addition, the leakage inductance is controlled by the structure of the leakage flux, and the difference of the magnetic arms is adjusted by the combined magnetic reluctance area, so that the left and right magnetic arms are symmetrically effective to improve the symmetry unevenness of the left and right magnetic arms. In addition, as shown in FIG. 8(a), a second preferred embodiment of the transformer of the present invention will be further described below. The second preferred embodiment is substantially the same as the first preferred embodiment except that the The distance between the second inner faces 425 is equal to the distance between the two first inner faces 414, and the area of the secondary contact faces 422 is greater than the effective cross-sectional area of the secondary magnetic flux regions 44, respectively. As shown in FIG. 8(b), when the second core 42 is moved to the left, the effective cross-sectional area of the secondary magnetic flux region 44 on the left side is changed, and the secondary portion 11200841364 on the right side is the right of the magnetic flux region 44. i “The area of the political wear is unchanged. As shown in Fig. 8(c), when the second core moves to the right, the area of the secondary magnetic flux area on the left side does not change, and you are m ^ ^ on the right side. The effective wearing area of the secondary magnetic flux region 44 is changed. Therefore, when the user can change the magnetic flux 0 passing through the secondary magnetic flux region 44, the second preferred embodiment has the first preferred embodiment. The same effect of the embodiment can simultaneously reduce the temperature rise of the primary coil and adjust the line (4) leakage flux to make the left and right magnetoresistance symmetrical.

- As shown in Fig. 9, a third preferred embodiment of the present invention will be described hereinafter. In order to enable the necessary features to be clearly presented, the primary bobbin and the human-stage bobbin and the primary and secondary coils wound thereon are

The imaginary line indicates that the third preferred embodiment is substantially the same as the first preferred embodiment, except that the bobbin unit $i includes two primary bobbins 15 forming the primary coil segment U, and four Each of the secondary bobbins 16 forming the secondary coil section 12 is formed. The core unit 4 includes two first cores 41 disposed opposite to the bobbin unit 1 , a second iron anger 42 connected to the two first cores 41 , and two formed on the first iron a primary magnetic flux region 43 between the core 41 and the second core 42 adjacent to the primary bobbin 15, and two formed between the two first cores 41 and the second core 42 and adjacent to the secondary coil The magnetic flux leakage region 45 of the shelf 16. The second core 42 has two magnetically permeable ends 426 respectively corresponding to the two magnetic flux barriers. Alternatively, the secondary bobbins 16 may be integrally formed to reduce the original four secondary bobbins 16 to two. Further, the primary bobbin 15 12 200841364 is the same as the first preferred embodiment, and may be disposed between the first core 41 and the second core 42 along a Y axis perpendicular to the X-axis direction. In use, the third preferred embodiment has the same effect as the first preferred embodiment, and can simultaneously lower the temperature rise of the primary coil and adjust the bubble bubble of the coil to make the left and right magnetoresistances symmetrical. Further, by adjusting the contact area of the magnetically permeable end portion with the magnetic flux leakage region 45, the leakage magnetic flux can be adjusted to achieve a desired inductance value. As shown in Figs. 11, the fourth embodiment of the present invention will be further described, including a bobbin unit 1, a primary coil 2, a primary coil 3 and a core unit 4. The bobbin unit 1 includes a primary coil section 11 and a primary coil section 12, the primary coil section u having a winding diameter greater than the winding diameter of the secondary coil section 12. The core unit 4 is assembled to the bobbin unit 1 and includes a first core 41 ′, which is connected to the bobbin unit i, and a second core 42 connected to the first core ο. a primary magnetic flux region 43 formed between the first core 41 and the second core 42 and adjacent to the primary coil 2, and a gap between the first core 41 and the second core 42 In addition, the second magnetic core 42/, "the young iron 41" forms a magnetic path connecting the primary coil 2 and the secondary coil 3. Only the embodiment is the same as the first preferred embodiment, the winding diameter of the primary coil segment 11 is greater than the winding implant of the secondary coil segment 12, so that it can be the same as the first preferred embodiment. The cooling effect is as shown in FIG. 12, and the fifth preferred embodiment of the present invention will be further described below. The fifth preferred embodiment is the same as the above-mentioned fourth preferred embodiment 13200841364, the difference being that The bobbin unit i further includes a through hole i3, and an air gap 14°. The first core 41 is disposed through the through hole, and the diameter of the first iron 41 is smaller than The air gap 14 is formed between the diameter of the through hole 13 and the through hole. In the embodiment, the ratio of the cross-sectional area of the first core 41 to the cross-sectional area of the through hole 13 is 1.6. The air gap 14 is available. The third core 45 is pierced, thereby obtaining a better magnetic permeability. The use of the embodiment is the same as the first preferred embodiment, and the winding diameter of the primary coil segment 11 is larger than the secondary coil. The winding diameter of the segment 12, so that the same cooling effect as that of the first preferred embodiment can be obtained. - As shown in Fig. 14, the following will describe the sixth preferred embodiment of the present invention. The sixth preferred embodiment is different from the fourth preferred embodiment described above in that the second core 42 has two primary portions respectively formed at opposite ends of the first core and in contact with the first iron & 41 The contact surface 42 is a secondary contact surface 422. The area of the primary contact surface 421 and the secondary contact surface is not less than the effective sectional area of the primary magnetic flux region 43 and the secondary magnetic flux region 44. In this embodiment, the embodiment In contrast to the first preferred embodiment, the winding diameter of the primary coil segment 11 is greater than that of the secondary coil segment 12. The wire diameter can be obtained, so that the temperature effect of the first preferred embodiment can be obtained. When the second core 41 is laterally moved relative to the second core 42, the primary magnetic flux region 43 can be changed. The effective cross-sectional area of the level magnetic flux region 44, thereby controlling the magnetic flux passing through the primary magnetic flux region 43 and the secondary magnetic flux region 44, is known from the above several embodiments, and the present invention can not only reduce the primary coil 14 200841364 Temperature rise, and by a structure that can control the leakage magnetic flux to make the left and right magnetic reluctance symmetrical, while reducing the cost required in actual manufacturing, and increasing mass productivity. However, the above is only a few of the present invention. The scope of the present invention is not limited by the scope of the invention, and the simple equivalent changes and modifications made by the present invention are still within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a first preferred embodiment of the present invention; FIG. 2 is an exploded perspective view of a first core and a second core illustrating the first core and the second core FIG. 3 is an exploded perspective view of the first core and the second core, illustrating different shapes of the first core and the second core; FIG. 4 is an exploded view of the first core and the second core 3 is a perspective view showing a different composition of the first core and the second core; FIG. 5 is an exploded perspective view of the first core and the second core, illustrating different shapes of the first core and the second core; An exploded perspective view of the first core and the second core, illustrating different shapes of the first core and the second core; FIG. 7 is a combined side view of the first preferred embodiment, illustrating moving the second Figure 8 is a side view of a second preferred embodiment of the transformer of the present invention, illustrating the state after moving the second core; 15 200841364 Figure 9 is a third preferred embodiment of the present invention. FIG. 10 is an exploded perspective view of a fourth preferred embodiment of the present invention; FIG. 11 is a combined top view of the fourth preferred embodiment; FIG. A side view of a fifth preferred embodiment, FIG. 13 is an exploded perspective view of the fifth preferred embodiment; and FIG. 14 is an exploded perspective view of a sixth preferred embodiment of the novel transformer.

16 200841364 [Description of main component symbols] 1 ······The bobbin unit 413... •-...The younger side 11... The primary coil section 414... ••...The inner surface 12... •...Secondary coil Segment 42"...the second core 13...•...perforation 42b...the primary bottom surface 14 air gap 422...•...·secondary contact surface 15... primary coil frame 423··· ••... Secondary end portion 16·"·" .... secondary bobbin 424... ••...second side 2.......* •...primary coil 425... ..... second inner surface 3*... ·...·Secondary coil 426... ••...Magnetizing end 4 •...core unit 427...···primary end 41.........··First core 43"··. £ 411 ------ Primary section 44·.···•...·Second flux zone 412... Secondary section 45·* ... •...·Leakage magnet

17

Claims (1)

200841364 X. Patent application scope: 1. A high-voltage adjustable leakage magnetic transformer, comprising: a bobbin early element, comprising a primary bobbin forming a primary coil segment, and two secondary coils forming a primary coil segment a primary coil segment having a winding diameter greater than twice the winding diameter of the secondary coil segment, a primary coil wound around the primary coil segment, and two secondary coils respectively wound around the primary coil segment a second core segment; and a Φ iron core unit, comprising a first iron core disposed on the winder unit, a second iron core connected to the first iron core, and a first iron core formed on the first iron core a primary magnetic flux region between the core and the second core adjacent to the primary coil, and a secondary magnetic flux region formed between the first core and the second core and adjacent to the secondary coil, The second core and the first core form a magnetic path connecting the primary coil and the secondary coil; the first core has a primary section that is disposed through the primary coil, and two from the primary section Extending and spacing through the secondary section of the secondary coil former a first inner surface formed on the inner side of the second stage and oppositely disposed, and a first side opposite to the first inner surface, the second core has a second end connected to the secondary stage a second inner surface formed on the inner side of the second-stage end and oppositely disposed, two opposite to the second side surface of the second inner surface, and two formed on the second-stage end brigade and the second The difference between the distance between the second side faces and the distance between the second inner faces of the secondary contact faces connected by the segments is not equal to the distance between the first first sides and the distance between the two first inner faces The difference. The invention relates to a high-voltage adjustable leakage magnetic transformer according to claim 1, wherein the distance between the second side faces is equal to the distance between the two first side faces, and the area of the secondary contact surface is They are respectively larger than the effective cross-sectional area of the secondary magnetic flux region. 3. The high-voltage adjustable leakage magnetic transformer according to claim 1, wherein the distance between the second inner faces is equal to the distance between the two first inner faces, and the area of the secondary contact faces is greater than The effective cross-sectional area of the secondary magnetic flux zone. _ 4 · ^ A pressure-adjustable leakage magnetic transformer comprising: a bobbin unit comprising two primary coils each forming a primary coil section, and four secondary bobbins each forming a primary coil section, the second The winding diameter of the primary coil segment is greater than the winding diameter of the secondary coil segments; a primary coil 'is wound around the two primary coil segments respectively; and four secondary coils are respectively wound around the secondary coils a coil segment; and a core unit 'including two first cores disposed opposite to the bobbin unit, and a second core connected to the two first cores a primary magnetic flux region between the iron core and the second core adjacent to the primary coil, and a drain formed between the first core and the second core and adjacent to the secondary coil a magnetic region, the two second cores and the first core form a magnetic path connecting the two primary coils and the secondary coils, the two first cores respectively have a primary section that is disposed through the primary coil former ' extending from the primary section and spaced apart from the secondary section of the secondary stage bobbin The second core having two end portions corresponding to the magnetic modulation of the two 19200841364 leakage magnetic domain respectively. 5 _ — A high-voltage adjustable leakage magnetic transformer comprising: a bobbin unit comprising a primary coil segment and a primary coil segment, the primary coil segment having a winding diameter greater than a winding diameter of the secondary coil segment a primary coil wound around the primary coil segment; a secondary coil wound around the secondary coil segment; and a core unit including a threaded unit a first iron core, a second iron core connected to the first iron core, a primary magnetic flux region formed between the first iron core and the second iron core and adjacent to the primary coil, and a a first magnetic flux between the first core and the second core and adjacent to a secondary magnetic flux region of the secondary coil, the second core and the first core forming a magnetic connection between the primary coil and the secondary coil path. The high-voltage adjustable leakage magnetic transformer according to the invention of claim 2, wherein the winding frame unit further comprises a through hole, the first iron core is disposed through the through hole, and the first iron core is The diameter is smaller than the diameter of the perforation and forms an air gap with the perforation. 7. According to the high-voltage adjustable leakage magnetic transformer described in item 7 of the patent scope, the ratio of the cross-sectional area of the first core to the cross-sectional area of the perforation is 1:) 6 Ο 8. According to the scope of the towel The high voltage adjustable leakage magnetic transformer of item 7 further comprising a second iron core disposed in the air gap. 9. According to the high-voltage adjustable magnetic leakage transformer described in item 5 of the patent scope, the second iron core has two opposite ends formed at the opposite ends of the second iron core 20 200841364 and The primary and secondary contact surfaces of the first core contact, the area of the primary and secondary contact surfaces is not less than the effective sectional area of the primary and secondary magnetic flux regions. twenty one