WO2016115952A1 - Carte de circuit imprimé comprenant un trou de montage de noyau magnétique, et transformateur - Google Patents

Carte de circuit imprimé comprenant un trou de montage de noyau magnétique, et transformateur Download PDF

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Publication number
WO2016115952A1
WO2016115952A1 PCT/CN2015/097296 CN2015097296W WO2016115952A1 WO 2016115952 A1 WO2016115952 A1 WO 2016115952A1 CN 2015097296 W CN2015097296 W CN 2015097296W WO 2016115952 A1 WO2016115952 A1 WO 2016115952A1
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WO
WIPO (PCT)
Prior art keywords
conductive copper
mounting hole
short
sinks
magnetic core
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Application number
PCT/CN2015/097296
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English (en)
Chinese (zh)
Inventor
袁林
聂富刚
马军华
黄兆平
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016115952A1 publication Critical patent/WO2016115952A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

Definitions

  • the present invention relates to the field of PCB boards, and in particular to a PCB board and a transformer having a core mounting hole.
  • AC-DC and DC-DC module power supplies are widely used in important fields such as communication.
  • the module power supply supplies power to important components such as chips by converting the voltage of -48V on the main board to a low voltage such as 5.5V.
  • the transformer is an indispensable part of the module power supply.
  • Such a transformer is generally formed by the core passing through the primary and secondary coils in the PCB. As shown in Figure 1, the primary and secondary sides of the transformer are shown. The current between the coils is conducted through the metallized holes near the mounting holes. As shown in Figure 2, with the continuous development of communication equipment, the power requirements of the transformer are getting higher and higher, and the current passing through the coil per unit area. It is also required to be larger and larger.
  • the traditional metallized small hole has a large area and a small cross-sectional area, and it is impossible to achieve high-current conduction. At this time, the way of over-current is realized by the copper core of the hole mounting hole. Adopting, as shown in Fig.
  • the main technical problem to be solved by the present invention is to provide a PCB board having a magnetic core mounting hole, which solves the problem of short circuit caused by the existing copper core of the hole wall contacting the different potentials at the same time.
  • the present invention provides a PCB board having a core mounting hole, including at least one core mounting hole; at least one of the core mounting holes includes a mounting hole and at least two conductive copper sinks
  • the inner side of the mounting hole includes at least one insulating segment and/or at least one conductive copper sink; when the magnetic core corresponding to the mounting hole passes through the mounting hole, the magnetic core and the insulating segment and/or conductive A conductive copper sink in the copper sink.
  • the insulating segment includes a short-circuit prevention position, when the inside of the mounting hole includes at least one short-circuit prevention position and at least two conductive copper sinks; in any two adjacent conductive copper sinks
  • the short-circuit prevention position is set; the short-circuit prevention position protrudes toward the hole of the mounting hole; the height of the short-circuit prevention position is larger than the surface where the conductive copper sink is located.
  • both ends of the two conductive copper sinks are on the same semicircular side, in two When the distance between the ends of the conductive copper sinks is small, the short-circuit prevention position is set; or when one end of the two copper sinks exceeds the semi-circular side, the short-circuit prevention positions are respectively disposed between the adjacent ends of the two conductive copper sinks.
  • the inside of the mounting hole includes two conductive copper sinks, and the shape of the mounting hole is square, two conductive copper ends are present on the same side or on adjacent sides.
  • a short-circuit prevention position is provided between the adjacent ends of the two conductive copper sinks.
  • the inner side of the mounting hole includes two conductive copper sinks, and the shape of the mounting hole is elliptical
  • a short-circuit prevention position is provided between the two conductive copper-plated ends; or when one of the two conductive copper sinks exceeds the long-axis or the short-axis side, respectively, an anti-proof is provided between the adjacent ends of the two conductive copper sinks.
  • Short circuit position when the inner side of the mounting hole includes two conductive copper sinks, and the shape of the mounting hole is elliptical, when both ends of the two conductive copper sinks are on the same long axis or short axis side a short-circuit prevention position is provided between the two conductive copper-plated ends; or when one of the two conductive copper sinks exceeds the long-axis or the short-axis side, respectively, an anti-proof is provided between the adjacent ends of the two conductive copper sinks. Short circuit position.
  • a short-circuit prevention position is respectively disposed between adjacent ends of the conductive copper sinks.
  • the short circuit protection bit is formed by cutting the PCB board itself.
  • the surface of the conductive copper sink when the inner side of the mounting hole includes a conductive copper sink, the surface of the conductive copper sinks a surface of the hole of the mounting hole or a hole recessed in the mounting hole.
  • the wall is on the surface.
  • the insulating segment includes a mounting hole wall, when the inside of the mounting hole includes at most one conductive copper sink; and other conductive copper sinks are disposed outside the mounting hole;
  • the copper is insulated by the PCB material.
  • a conductive copper sink is disposed on the inner hole wall of the mounting hole; another conductive copper sink is disposed at The outer side of the mounting hole; or two conductive copper sinks are disposed outside the mounting hole, and the two hole walls are insulated by the PCB material.
  • the present invention also provides a transformer comprising the PCB board and the magnetic core as described above, the magnetic core passing through a core mounting hole of the PCB board.
  • the present invention provides a PCB board having a magnetic core mounting hole and a transformer, the PCB board including at least one magnetic core mounting hole; at least one of the magnetic core mounting holes includes a mounting hole and at least two conductive copper sinks The inner side of the mounting hole includes at least one insulating segment and/or at least one conductive copper sink; when the magnetic core corresponding to the mounting hole passes through the mounting hole, one of the magnetic core and the insulating segment and/or one of the conductive copper sinks contact.
  • the existing two holes of the copper are disposed inside the mounting hole, and the magnetic core can simultaneously contact the two holes to form a copper, thereby causing a short circuit, thereby requiring insulation of the magnetic core, resulting in an increase in material cost, and the present invention enables the magnetic core Contact with at most one conductive copper sink prevents the short circuit from being contacted by the magnetic core with different potential conductive copper sinks.
  • This core mounting hole is easy to process and does not require additional processing of the magnetic core, which has a cost advantage.
  • FIG. 1 is a schematic view showing a transformer in which a magnetic core passes through a PCB coil in the prior art
  • FIG. 2 is a schematic view of a prior art utilizing metal vias for overcurrent
  • FIG. 3 is a schematic view showing a short circuit caused by a magnetic core contacting a different potential hole wall at the same time in the prior art
  • FIG. 4 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic view showing another magnetic core mounting hole of a PCB board according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 6 of the present invention.
  • FIG. 11 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 7 of the present invention.
  • FIG. 12 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 8 of the present invention.
  • FIG. 13 is a schematic view showing a magnetic core mounting hole of a PCB board according to Embodiment 9 of the present invention.
  • Figure 14 is a schematic view showing a magnetic core mounting hole of a PCB board in the tenth embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the PCB board with magnetic core mounting holes includes at least one magnetic core mounting hole; at least one of the magnetic core mounting holes includes a mounting hole and at least two conductive copper sinks; the inner side of the mounting hole includes At least one insulating segment and/or at least one conductive copper sink; when the magnetic core corresponding to the mounting hole passes through the mounting hole, the magnetic core is in contact with one of the insulating segment and/or one of the conductive copper sinks.
  • the insulation section here can be the short-circuit proof or the hole wall of the mounting hole, that is, the insulation material of the PCB itself. It should be understood that the magnetic core passes through the mounting hole, and the non-conductive parts of the magnetic core contact are Insulation section.
  • the conductive copper sink here should be understood to include copper sinking in the hole wall, of course, not only limited to copper sinking in the hole wall, but also capable of conducting copper for the transformer.
  • the insulating segment includes a short-circuit prevention position, and the inner side of the mounting hole includes at least one short-circuit prevention position and at least When two conductive copper sinks; an anti-short-circuit position is provided between any two adjacent conductive copper sinks; the short-circuit prevention position protrudes toward the hole of the mounting hole; the height of the short-circuit prevention position is larger than the surface where the conductive copper sink is located.
  • the mounting hole is circular, and two conductive copper sinks are taken as an example, and the arcs of the two conductive copper sinks are small.
  • the core mounting hole includes a mounting hole 11, two conductive copper sinks 121 and 122, and a short-circuit prevention position 13.
  • the conductive copper sink 121 and the conductive copper sink 122 have different potentials; the short-circuit prevention bit 13 is in a conductive sink.
  • the position between the copper 121 and the conductive copper sink 122, the short-circuit prevention position 13 is beyond the surface of the conductive copper sink 121 and the surface of the conductive copper sink 122.
  • the surface of the conductive copper plate 121 and the surface of the conductive copper sink 122 it is impossible to contact the surface of the conductive copper plate 121 and the surface of the conductive copper sink 122 at the same time, thereby avoiding the occurrence of a short circuit. And the surface of the conductive copper sink 121 and the surface of the conductive copper sink 122 on which the mounting hole 11 is located.
  • the surface of the conductive copper sink 121 and the surface of the conductive copper sink 122 may also be recessed on the surface where the mounting hole 11 is located, as shown in FIG.
  • the surface of the conductive copper plate 121 and the surface of the conductive copper sink 122 may also be on the surface where the mounting hole 11 is located.
  • the inner side of the short-circuit prevention position 13 is of a circular arc shape to facilitate better contact with the magnetic core 14.
  • the short-circuit prevention position 13 may also have a shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. It should be understood that the short circuit prevention 13 is only required to protrude from the conductive copper sink, and the specific shape is not limited.
  • the material of the short-circuit prevention position 13 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bit 13 is part of the PCB and retains the raised portion during processing. It is only necessary to drill the magnetic core hole, that is, the mounting hole 11 according to the normal processing procedure of the PCB after the copper is deposited on the sidewall of the PCB, and the predetermined short-circuit prevention position 13 is left, the processing is simple, and no additional material and process cost are increased.
  • a short circuit preventing position is set between the distance between the two conductive copper sink ends, that is, if the arc of the conductive copper sink is small, the magnetic core It is only possible to contact the two conductive copper sinks on the side of the semicircle, such that at least one of the short-circuit prevention positions between the two is prevented from simultaneously contacting the two conductive copper sinks.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the mounting hole is circular and has two conductive copper sinks as an example for description. And the two conductive copper sinks have a large curvature, which facilitates the passage of a larger current.
  • the core mounting hole includes a mounting hole 21, two conductive copper sinks 221 and 222, two short-circuit prevention positions 231 and 232, and the conductive copper sink 221 and the conductive copper sink 222 have different potentials; 231 and 232 are located between the conductive copper 221 and the conductive copper 222, and the short-circuit prevention positions 231 and 232 are beyond the surface of the conductive copper 221 and the conductive copper 222.
  • the magnetic core 24 When the magnetic core 24 passes through the mounting hole 21, due to the short-circuit prevention position With the isolation of 231 and 232, the magnetic core 24 will not be able to simultaneously contact the conductive copper 221 surface and the conductive copper 222 surface, thereby avoiding the occurrence of a short circuit.
  • the inner sides of the short-circuit prevention positions 231 and 232 are of a circular arc shape to facilitate better contact with the magnetic core 24.
  • the short-circuit prevention positions 231 and 232 may also be in the shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like.
  • the short-circuit preventions 231 and 232 are only required to protrude beyond the conductive copper, and the specific shape is not limited.
  • the material of the short-circuit prevention positions 231 and 232 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bits 231 and 232 are part of the PCB and are retained during processing. It is only necessary to drill the core hole, that is, the mounting hole 21, according to the normal processing of the PCB after the copper sidewall of the PCB is deposited, and leave the predetermined short-circuit prevention positions 231 and 232, which is simple in processing, without additional material and process cost increase.
  • a short-circuit prevention position is respectively set between the distances between the two conductive copper-plated ends, that is, if the arc of the conductive copper sink is large, the magnetic core
  • the at least one short-circuit prevention position between the two is prevented from simultaneously contacting the two conductive copper sinks.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the mounting hole is square and has two conductive copper sinks as an example, and the arcs of the two conductive copper sinks are small.
  • the core mounting hole includes a mounting hole 31, two conductive copper sinks 321 and 322, and a short-circuit prevention position 33.
  • the conductive copper sink 321 and the conductive copper sink 322 have different potentials; the short-circuit prevention bit 33 is in a conductive sink. Position between copper 321 and conductive copper 322 The short-circuiting position 33 is beyond the surface of the conductive copper sink 321 and the surface of the conductive copper sink 322.
  • the magnetic core 34 When the magnetic core 34 passes through the mounting hole 31, the magnetic core 34 cannot simultaneously contact the conductive copper sink 321 surface and the conductive sink due to the isolation of the short-circuit preventing position 33. Copper 322 faces to avoid short circuits.
  • the inner side of the short-circuit prevention position 33 is a flat surface for facilitating better contact with the magnetic core 34.
  • the shape of the short-circuit prevention position 33 may also be a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. It should be understood that the short circuit prevention 33 is only required to protrude from the conductive copper sink, and the specific shape is not limited.
  • the material of the short-circuit prevention position 33 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bit 33 is part of the PCB and retains the raised portion during processing. It is only necessary to drill the magnetic core hole, that is, the mounting hole 31, according to the normal processing of the PCB after the copper sidewall of the PCB is deposited, and the predetermined short-circuit prevention position 33 is left, the processing is simple, and no additional material and process cost are increased.
  • a short-circuit prevention position is provided between the adjacent ends of the two conductive copper sinks, that is, if When the arc of the conductive copper sink is small, the magnetic core may only be in contact with the two conductive copper sinks on the same side thereof, and the at least one short-circuit prevention position between the two is prevented from simultaneously simultaneously with the two conductive copper sinks. contact.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the mounting hole is square and has two conductive copper sinks as an example for description. And the two conductive copper sinks have a large curvature, which facilitates the passage of a larger current.
  • the core mounting hole includes a mounting hole 41, two conductive copper sinks 421 and 422, two short-circuit prevention positions 431 and 432, and the conductive copper sink 421 and the conductive copper sink 422 have different potentials; 431 and 432 are located between the conductive copper 421 and the conductive copper 422, and the short-circuit prevention positions 431 and 432 are beyond the surface of the conductive copper 421 and the conductive copper 422.
  • the magnetic core 44 When the magnetic core 44 passes through the mounting hole 41, due to the short-circuit prevention position With the isolation of 431 and 432, the magnetic core 44 will not be able to simultaneously contact the conductive copper 421 surface and the conductive copper 422 surface, thereby avoiding the occurrence of a short circuit.
  • the inner sides of the short-circuit prevention positions 431 and 432 are planar, facilitating better contact with the magnetic core 44.
  • the short-circuit prevention positions 431 and 432 may also be in the shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. Should understand In order to prevent the short circuits 431 and 432 from protruding beyond the conductive copper, the specific shape is not limited.
  • the material of the short-circuit prevention positions 431 and 432 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bits 431 and 432 are part of the PCB and are retained during processing. It is only necessary to drill the magnetic core hole, that is, the mounting hole 41, according to the normal processing procedure of the PCB after the copper sidewall of the PCB is deposited, and the predetermined short-circuit prevention positions 431 and 432 are left, the processing is simple, and no additional material and process cost are increased.
  • a short-circuit prevention position is set between the distances between the two conductive copper-plated ends, that is, if the arc of the conductive copper sink is large, the magnetic core
  • the at least one short-circuit prevention position between the two is prevented from simultaneously contacting the two conductive copper sinks. It should be understood that there are two sides on the same side. When the ends of the conductive copper sinks or the ends of the two conductive copper sinks are present on the adjacent side edges, a short-circuit prevention position is provided between the adjacent ends of the two conductive copper sinks.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the mounting hole is elliptical and has two conductive copper sinks as an example, and the two conductive copper sinks are small in curvature and are on the long axis side.
  • the core mounting hole includes a mounting hole 51, two conductive copper sinks 521 and 522, and a short-circuit prevention position 53.
  • the conductive copper sink 521 and the conductive copper sink 522 have different potentials; the short-circuit prevention terminal 53 is in a conductive sink.
  • the position between the copper 521 and the conductive copper sink 522, the short circuit preventing position 53 is beyond the surface of the conductive copper 521 and the conductive copper 522.
  • the magnetic core 54 When the magnetic core 54 passes through the mounting hole 51, the magnetic core 54 will be separated due to the short circuit 53 It is impossible to contact the conductive copper 521 surface and the conductive copper 522 surface at the same time, thereby avoiding the occurrence of a short circuit.
  • the inner side of the short-circuit prevention preventing portion 53 is of a circular arc shape to facilitate better contact with the magnetic core 54.
  • the short-circuit prevention position 53 may also have a shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. It should be understood that the short circuit prevention 53 is only required to protrude beyond the conductive copper, and the specific shape is not limited.
  • the material of the short-circuit prevention position 53 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bit 53 is part of the PCB and retains the raised portion during processing. It is only necessary to drill the core hole, that is, the mounting hole 51, according to the normal processing of the PCB after the copper sidewall of the PCB is sun-baked. And the predetermined anti-short circuit position 53 can be left, the processing is simple, and no additional materials and process costs are increased.
  • a short circuit prevention position is set between the distances between the two conductive copper sink ends, that is, if the arc of the conductive copper sink is small, the magnetic
  • the core is only in contact with the two conductive cups of copper on the side of the half shaft, the at least one short circuit preventing position between the two is prevented from simultaneously contacting the two conductive copper sinks.
  • the mounting hole is elliptical and has two conductive copper sinks as an example, and the two conductive copper sinks are small in curvature and are on the short axis side.
  • the core mounting hole includes a mounting hole 61, two conductive copper sinks 621 and 622, and a short-circuit prevention position 63.
  • the conductive copper sink 621 and the conductive copper sink 622 have different potentials; the short-circuit prevention portion 63 is in a conductive sink.
  • the position between the copper 621 and the conductive copper sink 622, the short-circuit prevention position 63 exceeds the surface of the conductive copper sink 621 and the surface of the conductive copper sink 622.
  • the magnetic core 64 When the magnetic core 64 passes through the mounting hole 61, the magnetic core 64 will be separated by the short-circuit prevention position 63. It is impossible to contact the conductive copper 621 surface and the conductive copper 622 surface at the same time, thereby avoiding the occurrence of a short circuit.
  • the inner side of the short-circuit prevention position 63 is of a circular arc shape to facilitate better contact with the magnetic core 64.
  • the shape of the short-circuit prevention position 63 may also be a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. It should be understood that the short circuit prevention 63 is only required to protrude from the conductive copper sink, and the specific shape is not limited.
  • the material of the short-circuit prevention position 63 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bit 63 is part of the PCB and retains the raised portion during processing. It is only necessary to drill the magnetic core hole, that is, the mounting hole 61, according to the normal processing procedure of the PCB after the copper is deposited on the sidewall of the PCB, and the predetermined short-circuit prevention position 63 is left, the processing is simple, and no additional material and process cost are increased.
  • a short-circuit prevention position is set between the distances between the two conductive copper-plated ends, that is, if the arc of the conductive copper sink is small, the magnetic
  • the core is only in contact with the two conductive cups of copper on the side of the half shaft, the at least one short circuit preventing position between the two is prevented from simultaneously contacting the two conductive copper sinks.
  • the mounting hole is elliptical and has two conductive copper sinks as an example for description. And the two conductive copper sinks have a large curvature, which facilitates the passage of a larger current.
  • the core mounting hole includes a mounting hole 71, two conductive copper sinks 721 and 722, two short circuit prevention positions 731 and 732, and the conductive copper sink 721 and the conductive copper sink 722 have different potentials; 731 and 732 are located between the conductive copper sink 721 and the conductive sink copper 722, and the short-circuit prevention positions 731 and 732 are beyond the conductive copper sink 721 surface and the conductive copper sink 722 surface.
  • the magnetic core 74 When the magnetic core 74 passes through the mounting hole 71, due to the short-circuit prevention position With the isolation of 731 and 732, the magnetic core 74 will not be able to simultaneously contact the conductive copper 721 surface and the conductive copper 722 surface, thereby avoiding the occurrence of a short circuit.
  • the inner sides of the short-circuit prevention positions 731 and 732 are of a circular arc shape to facilitate better contact with the magnetic core 74.
  • the short-circuit prevention positions 731 and 732 may also be in the shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like.
  • the short-circuit prevention 731 and 732 are only required to protrude from the conductive copper sink, and the specific shape is not limited.
  • the material of the short-circuit prevention positions 731 and 732 may also be an insulating material such as plastic, oxide or resin.
  • the short-circuit proof bits 731 and 732 are part of the PCB and are retained during processing. It is only necessary to drill the magnetic core hole, that is, the mounting hole 71, according to the normal processing of the PCB after the copper sidewall of the PCB is deposited, and leave the predetermined short-circuit prevention positions 731 and 732, and the processing is simple, and no additional material and process cost are increased.
  • a short circuit prevention position is set between the distances between the two conductive copper ends, that is, if the arc of the conductive copper sink is large, that is, two
  • the at least one short-circuit prevention position between the two is prevented. It is in contact with two conductive copper sinks at the same time.
  • the mounting hole is circular and has three conductive copper sinks as an example for description. And the two conductive copper sinks have a large curvature, which facilitates the passage of a larger current.
  • the core mounting hole includes a mounting hole 81, three conductive copper sinks 821, 822, and 823, and three short-circuit prevention positions.
  • the short-circuit prevention positions 831, 832 and 833 are located between the conductive copper 821, the conductive copper 822 and the conductive copper 823 With each other, the short-circuit prevention positions 831, 832, and 833 are beyond the surface of the conductive copper 821, the conductive copper 822, and the conductive copper sink 823.
  • the magnetic core 84 passes through the mounting hole 81, the isolation of the short-circuit prevention positions 831, 832, and 833 is caused.
  • the magnetic core 84 will not be able to simultaneously contact the conductive copper 821, the conductive copper 822 and the conductive copper 823 surface, thereby avoiding the occurrence of a short circuit.
  • the inner sides of the short-circuit prevention positions 831, 832, and 833 are of a circular arc shape to facilitate better contact with the magnetic core 84.
  • the short-circuit prevention positions 831, 832, and 833 may also be in the shape of a flat shape, an arc shape, a dot shape, a square shape, a pointed shape, or the like. It should be understood that the short-circuit preventions 231 and 232 are only required to protrude beyond the conductive copper, and the specific shape is not limited.
  • the material of the short-circuit prevention positions 831, 832, and 833 may also be an insulating material such as plastic, oxide, or resin.
  • the short-circuit proof bits 831, 832, and 833 are part of the PCB that remain in the process while being processed. It is only necessary to drill the core hole, that is, the mounting hole 81, according to the normal processing of the PCB after the copper sidewall of the PCB is sun-baked, and leave the predetermined short-circuit prevention positions 831, 832 and 833, and the processing is simple, without additional material and process cost increase. .
  • a short-circuit prevention position is respectively disposed between adjacent ends of the respective conductive copper sinks to prevent them from simultaneously contacting the two conductive copper sinks.
  • the conductive copper sink in the present embodiment is not limited to three, and more than three may be used.
  • the shape of the specific mounting hole is not limited to a circular shape, and other shapes such as an ellipse and a square may be used, and the specific conditions may be specific. And set.
  • the mounting hole is circular and has two conductive copper sinks as an example for description. And one of the conductive sinking copper is outside the mounting hole and the other is inside the mounting hole.
  • the core mounting hole includes a mounting hole 91, two conductive copper sinks 921 and 922, and the conductive copper sink 921 and the conductive copper sink 922 have different potentials; since the conductive copper sink 921 is outside the mounting hole 91 In the middle, there is an insulating PCB board material, the magnetic core 94 cannot contact the conductive copper sink 921, and the conductive copper sink 922 is inside the mounting hole 91, and the magnetic core 94 can be in contact therewith.
  • the magnetic core 94 can only be in contact with the conductive copper sink 922, and no short circuit occurs.
  • the conductive copper sink in this embodiment is not limited to two, three or more, and preferably, only one of the conductive copper sinks is disposed inside the mounting hole, and the rest of the mounting holes are provided on the outside of the mounting hole.
  • the material of the board itself is isolated, and the shape of the specific mounting hole is not limited to a circular shape, and other shapes such as an ellipse and a square may be used, and the specific shape may be determined according to specific conditions.
  • the mounting hole is circular and has two conductive copper sinks as an example for description. And two conductive copper sinks are on the outside of the mounting hole.
  • the core mounting hole includes a mounting hole 101, two conductive copper sinks 1021 and 1022, and the conductive copper sink 1021 and the conductive copper sink 1022 have different potentials; since the conductive copper sinks 1021 and 1022 are in the mounting hole 91
  • the outer side has an insulating PCB material in the middle, and the magnetic core 94 cannot contact the conductive copper sinks 1021 and 1022 without short circuit. It should be understood that the conductive copper sink in this embodiment is not limited to two, three or more.
  • the conductive copper is disposed outside the mounting hole, and each conductive copper is insulated by the material of the PCB itself. That is, the shape of the specific mounting hole is not limited to a circular shape, and other shapes such as an ellipse and a square may be used, and the specific shape may be determined according to specific conditions.
  • the present invention also provides a transformer comprising the PCB board and the magnetic core of all of the above embodiments, the magnetic core passing through the core mounting hole of the PCB board.
  • the embodiment provides a PCB board and a transformer having a core mounting hole, and the PCB board includes At least one magnetic core mounting hole; at least one of the magnetic core mounting holes includes a mounting hole and at least two conductive copper sinks; the inner side of the mounting hole includes at least one insulating segment and/or at least one conductive copper sink; When the magnetic core corresponding to the mounting hole passes through the mounting hole, the magnetic core is in contact with one of the insulating segment and/or one of the conductive copper sinks; thus, the embodiment makes the magnetic core contact with at most one of the conductive copper sinks, thereby preventing The short circuit occurs when the magnetic core contacts different potential conductive copper sinks.
  • the core mounting hole is simple to process and does not require additional processing of the magnetic core, which has a cost advantage.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)

Abstract

Cette invention concerne une carte de circuit imprimé comprenant un trou de montage de noyau magnétique, et un transformateur. Ladite carte de circuit imprimé comprend au moins un trou de montage de noyau magnétique. Au moins l'un des trous de montage de noyau magnétique comprend un trou de montage (11) et au moins deux pièces de cuivre conducteur de dépôt autocatalytique (121, 122). Le côté interne du trou de montage (11) comprend au moins un segment d'isolation et/ou au moins une pièce de cuivre conducteur de dépôt autocatalytique (121, 122). Lorsqu'un noyau magnétique (14) correspondant au trou de montage de noyau (11) pénètre à travers le trou de montage (11), le noyau magnétique (14) est mis en contact avec le segment d'isolation et/ou une pièce du cuivre conducteur de dépôt autocatalytique (121, 122).
PCT/CN2015/097296 2015-01-19 2015-12-14 Carte de circuit imprimé comprenant un trou de montage de noyau magnétique, et transformateur WO2016115952A1 (fr)

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CN201520033815.XU CN204377248U (zh) 2015-01-19 2015-01-19 一种具有磁芯安装孔的pcb板和变压器

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Publication number Priority date Publication date Assignee Title
CN204377248U (zh) * 2015-01-19 2015-06-03 中兴通讯股份有限公司 一种具有磁芯安装孔的pcb板和变压器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040118605A1 (en) * 2002-12-20 2004-06-24 Van Der Laan Ruud Circuit board having a multi-functional hole
CN201278297Y (zh) * 2008-09-19 2009-07-22 四川长虹电器股份有限公司 液晶显示屏背光灯变压器
CN102291934A (zh) * 2011-08-05 2011-12-21 华为技术有限公司 电镀通孔、印刷电路板以及制造电镀通孔的方法
CN103854825A (zh) * 2012-12-07 2014-06-11 台达电子（郴州）有限公司 一种磁性被动元件及其制造方法
CN104064329A (zh) * 2013-03-22 2014-09-24 王勇 平板磁芯高频脉冲变压器
CN204377248U (zh) * 2015-01-19 2015-06-03 中兴通讯股份有限公司 一种具有磁芯安装孔的pcb板和变压器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040118605A1 (en) * 2002-12-20 2004-06-24 Van Der Laan Ruud Circuit board having a multi-functional hole
CN201278297Y (zh) * 2008-09-19 2009-07-22 四川长虹电器股份有限公司 液晶显示屏背光灯变压器
CN102291934A (zh) * 2011-08-05 2011-12-21 华为技术有限公司 电镀通孔、印刷电路板以及制造电镀通孔的方法
CN103854825A (zh) * 2012-12-07 2014-06-11 台达电子（郴州）有限公司 一种磁性被动元件及其制造方法
CN104064329A (zh) * 2013-03-22 2014-09-24 王勇 平板磁芯高频脉冲变压器
CN204377248U (zh) * 2015-01-19 2015-06-03 中兴通讯股份有限公司 一种具有磁芯安装孔的pcb板和变压器

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