Patent ID: 12193158

BEST MODE

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively combined or substituted between embodiments.

In addition, the terms (including technical and scientific terms) used in the embodiments of the present invention, unless explicitly defined and described, can be interpreted as a meaning that can be generally understood by a person skilled in the art, and commonly used terms such as terms defined in the dictionary may be interpreted in consideration of the meaning of the context of the related technology.

In addition, terms used in the present specification are for describing embodiments and are not intended to limit the present invention.

In the present specification, the singular form may include the plural form unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and B and C”, it may include one or more of all combinations that can be combined with A, B, and C.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are merely intended to distinguish the components from other components, and the terms do not limit the nature, order or sequence of the components.

And, when a component is described as being ‘connected’, ‘coupled’ or ‘interconnected’ to another component, the component is not only directly connected, coupled or interconnected to the other component, but may also include cases of being ‘connected’, ‘coupled’, or ‘interconnected’ due that another component between that other components.

In addition, when described as being formed or arranged in “on (above)” or “below (under)” of each component, “on (above)” or “below (under)” means that it includes not only the case where the two components are directly in contact with, but also the case where one or more other components are formed or arranged between the two components. In addition, when expressed as “on (above)” or “below (under)”, the meaning of not only an upward direction but also a downward direction based on one component may be included.

A converter according to the present embodiment is an electronic device provided in a vehicle, and refers to an electronic circuit device that converts power of a certain voltage to power of another voltage. For example, the converter may be a DC-DC converter. However, the configuration according to the present embodiment is not limited thereto, and the printed circuit board module according to the present embodiment can be applied to various electronic devices.

In addition, the outer appearance of the converter according to the present embodiment can be formed by the housing. An inner space may be formed inside the housing so that the printed circuit board module according to the present embodiment is disposed.

FIG.1is a perspective view of a printed circuit board module according to a first embodiment of the present invention;FIG.2is a cross-sectional view of a printed circuit board module according to a first embodiment of the present invention;FIG.3is an exploded perspective view of a printed circuit board module according to a first embodiment of the present invention; andFIG.4is a plan view of a metal pattern according to a first embodiment of the present invention.

Referring toFIGS.1to4, the printed circuit board module100according to the first embodiment of the present invention may include: a first printed circuit board110, a second printed circuit board120, and a core130.

The first printed circuit board110may be formed in a plate shape. One or more electronic components112for driving may be disposed on an upper surface or a lower surface of the first printed circuit board110. The electronic components112may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board110is comprised of a double-sided printed circuit board, and the second printed circuit boards120and140, the core130and a plurality of electronic components112may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board110. The first metal pattern may be formed in a coil shape on a surface of the first printed circuit board110.

Second printed circuit boards120and140may be disposed on one surface or the other surface of the first printed circuit board110. The second printed circuit boards120and140may include: an upper printed circuit board120disposed on an upper surface of the first printed circuit board110; and a lower printed circuit board140disposed on a lower surface of the first printed circuit board110. The cross-sectional area of the second printed circuit boards120and140may be formed to be smaller than that of the first printed circuit board110.

The upper printed circuit board120is a second printed circuit board120, and the lower printed circuit board140may be referred to as a third printed circuit board140. The second printed circuit board120and the third printed circuit board140may have the same area.

A secondary metal pattern122may be wound on a surface of the second printed circuit boards120and140. The secondary metal pattern may be wound in the form of a coil on a surface of the second printed circuit boards120and140.

In other words, a first coil may be formed on the second printed circuit board120, and a second coil may be formed on the third printed circuit board140. The first coil may include a plurality of first metal patterns. The second coil may include a plurality of second metal patterns.

The first metal pattern may include a primary coil having a first voltage. The second metal pattern may include a secondary coil having a second voltage being separated from the primary coil.

As illustrated inFIG.3, the primary metal pattern or the secondary metal pattern122may be formed in the form of a spiral on the surface of the first printed circuit board110or the second printed circuit boards120and140, respectively.

The second printed circuit boards120and140may be formed in multiple layers. The upper printed circuit board120and the lower printed circuit board140are provided in plurality, respectively, and may be stacked in a vertical direction. More specifically, the upper printed circuit board120disposed on the first printed circuit board110may be implemented in two or more sheets. In addition, the secondary metal pattern122may be disposed on a surface of each of the upper printed circuit boards120.

When the second printed circuit boards120and140are implemented as multiple layers, the metal patterns disposed on a surface of the second printed circuit boards120and140may be connected with a conductor through a through hole.

On the other hand, in the present embodiment, the first metal pattern is disposed on the first printed circuit board110and the second metal pattern is disposed on the second printed circuit boards120and140as an example, but is not limited thereto, and a primary metal pattern may be disposed on the second printed circuit boards120and140, and a secondary metal pattern may be disposed on the first printed circuit board110. In addition, the metal pattern may not be disposed on the first printed circuit board110at all. In this case, both the primary metal pattern and the secondary metal pattern may be disposed on the second printed circuit boards120and140.

Meanwhile, the primary metal pattern and the secondary metal pattern may be implemented as metal pattern layers having an inductance component on the first printed circuit board110and the second printed circuit boards120and140, respectively. In addition, the metal pattern layer having an inductance component may be provided with a metal material having high conductivity to efficiently and smoothly output the transformed power signal.

The core130may be coupled to penetrate the first to third printed circuit boards110,120, and140. A first opening118and a hole119may be formed in the first printed circuit board110for being inserted with at least a portion of the core130. A plurality of the holes119may be provided to face each other with respect to the first opening118. The hole119may include a first hole and a second hole. At least a portion of the core130may be inserted into the first hole and the second hole, respectively.

The second printed circuit board120and the third printed circuit board140may be disposed between the first hole and the second hole.

The cross-sectional area of the hole119may be formed to be smaller than the cross-sectional area of the first opening118.

Meanwhile, among the second printed circuit board120and the third printed circuit board140, in an area facing the first opening118in the vertical direction, a second opening129and a third opening149may be formed, respectively. Due to this, at least a portion of the core130may be coupled to penetrate through the first opening118, the second opening129, and the third opening149. The first to third openings118,129, and149may be disposed to face each other in the vertical direction, and may have the same size.

The core130may be disposed on the surfaces of the second printed circuit boards120and140to induce the formation of a magnetic field. The core130may be disposed on an upper surface of the upper printed circuit board120or a lower surface of the lower printed circuit board140. The core130may have a shape that surrounds the first printed circuit board110and the second printed circuit boards120and140that form the primary metal pattern and the secondary metal pattern from the outside. The metal pattern122disposed on the surfaces of the second printed circuit boards120and140may be disposed to surround the core130. For example, the core130may be a ferrite core.

The core130may be provided in plurality. The core130may include a first core and a second core. The first core may be in contact with an upper surface and a side surface of the second printed circuit board120. The second core may in contact with a lower surface and a side surface of the third printed circuit board140.

Each of the first core and the second core may be disposed in plurality (refer toFIG.10).

Meanwhile, the length of the long side of the core130may be formed to be longer than the length of at least one side of the second printed circuit board120or the third printed circuit board130.

According to the above structure, a space for forming a metal pattern can be secured by configuring the second printed circuit board in multiple layers in addition to the main printed circuit board, and there is an advantage in that the manufacturing cost can be lowered when compared to configuring the main printed circuit board to have a multi-layer structure.

FIG.5is a cross-sectional view of a printed circuit board module according to a second embodiment of the present invention.

Referring toFIG.5, a printed circuit board module200according to a second embodiment of the present invention may include a first printed circuit board210, a second printed circuit board220, an upper core230, and a lower core240.

The first printed circuit board210may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board210. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board210is comprised of a double-sided printed circuit board, and the second printed circuit board220, the cores230and240, and a plurality of electronic components may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board210. The first metal pattern may be formed in a coil shape on a surface of the first printed circuit board210.

A second printed circuit board220may be disposed on the upper surface of the first printed circuit board210. The cross-sectional area of the second printed circuit board220may be formed to be smaller than the cross-sectional area of the first printed circuit board210.

A secondary metal pattern may be wound on a surface of the second printed circuit board220. The secondary metal pattern may be wound on a surface of the second printed circuit board220in the form of a coil. The secondary metal pattern may be formed in the form of a spiral on the surface of the second printed circuit board220.

The second printed circuit board220may be formed in multiple layers. The second printed circuit board220disposed on the second printed circuit board220may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards220.

When the second printed circuit board220is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board220through a through hole.

The upper core230may be disposed on an upper surface of the second printed circuit board220. The upper core230may be disposed on a surface of the second printed circuit board220to induce the formation of a magnetic field. The upper core230may be coupled to surround the secondary metal pattern from the outside.

The upper core230may be coupled to penetrate the second printed circuit board220.

The lower core240may be disposed on a lower surface of the first printed circuit board210. The lower core240may be disposed on a lower surface of the first printed circuit board210to induce the formation of a magnetic field. The lower core240may be coupled to surround the primary metal pattern from the outside.

The lower core240may be coupled to penetrate the first printed circuit board110.

The upper core230and the lower core240may be ferrite cores.

The first printed circuit board210and the second printed circuit board220may be rivet-coupled to each other. A hole may be formed in each of the first printed circuit board210and the second printed circuit board220so that a rivet250penetrates therethrough, respectively. On the upper and lower ends of the rivet250, locking portions252and254being formed to have a larger cross-sectional area than that of other areas may be formed so as to be caught on the lower surface of the first printed circuit board210and the upper surface of the second printed circuit board220, respectively. According to the structure as described above, the coupling state of the first printed circuit board210and the second printed circuit board220may be firmly fixed.

In addition, the first printed circuit board210and the second printed circuit board220may be electrically connected through the rivet250. In this case, the upper and lower ends of the rivet250may be mounted on a lower surface of the first printed circuit board210or an upper surface of the second printed circuit board220, respectively.

FIG.6is a cross-sectional view of a printed circuit board module according to a third embodiment of the present invention.

Referring toFIG.6, the printed circuit board module300according to the third embodiment of the present invention may comprise a first printed circuit board310, a second printed circuit board320, a third printed circuit board330, an upper core340, and a lower core350.

The first printed circuit board310may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board310. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board310is comprised of a double-sided printed circuit board, and a second printed circuit board320, a lower core350, and a plurality of electronic components may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board310. The first metal pattern may be formed in a coil shape on a surface of the first printed circuit board310.

A second printed circuit board320may be disposed on the upper surface of the first printed circuit board310. The cross-sectional area of the second printed circuit board320may be formed to be smaller than the cross-sectional area of the first printed circuit board310.

A secondary metal pattern may be wound on a surface of the second printed circuit board320. The secondary metal pattern may be wound on a surface of the second printed circuit board320in the form of a coil. The secondary metal pattern may be formed in the form of a spiral on the surface of the second printed circuit board320.

The second printed circuit board320may be formed in multiple layers. The second printed circuit board320disposed on the second printed circuit board320may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards320.

When the second printed circuit board320is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board320through a through hole.

A third printed circuit board330may be disposed on an upper surface of the second printed circuit board320. A cross-sectional area of the third printed circuit board330may be formed to be smaller than a cross-sectional area of the first printed circuit board310. A cross-sectional area of the third printed circuit board330may correspond to a cross-sectional area of the second printed circuit board320.

A secondary metal pattern may be wound on a surface of the third printed circuit board330. The secondary metal pattern may be wound on a surface of the third printed circuit board330in the form of a coil. The secondary metal pattern may be formed in the form of a spiral on the surface of the third printed circuit board330.

The third printed circuit board330may be formed in multiple layers. The third printed circuit board330disposed on the third printed circuit board330may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the third printed circuit boards330.

When the third printed circuit board330is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the third printed circuit board330through a through hole.

In addition, the metal pattern of the third printed circuit board330and the metal pattern of the second printed circuit board320may be interconnected by a conductor through a through hole.

The upper core340may be disposed on an upper surface of the third printed circuit board330. The upper core340may be disposed on a surface of the third printed circuit board330to induce the formation of a magnetic field. The upper core340may be coupled to surround the secondary metal pattern from the outside.

The lower core350may be disposed on a lower surface of the first printed circuit board310. The lower core350may be disposed on a lower surface of the first printed circuit board310to induce the formation of a magnetic field. The lower core350may be coupled to surround the primary metal pattern from the outside.

The upper core340and the lower core350may be ferrite cores.

The first printed circuit board310, the second printed circuit board320, and the third printed circuit board330may be rivet-coupled to each other. Holes may be formed in the first printed circuit board310, the second printed circuit board320, and the third printed circuit board330so that a rivet360penetrates therethrough, respectively. On the upper and lower ends of the rivet360, locking portions362and364being formed to have a larger cross-sectional area than that of other areas may be formed so as to be caught on the lower surface of the first printed circuit board310and the upper surface of the third printed circuit board330, respectively. According to the structure as described above, the coupling state of the first printed circuit board310, the second printed circuit board320, and the third printed circuit board330can be firmly fixed.

In addition, the first printed circuit board310and the second printed circuit board320and the third printed circuit board330may be electrically connected through the rivet360. In this case, the upper and lower ends of the rivet360may be mounted on a lower surface of the first printed circuit board310or an upper surface of the third printed circuit board330, respectively.

FIG.7is a cross-sectional view of a printed circuit board module according to a fourth embodiment of the present invention.

Referring toFIG.7, the printed circuit board module400according to a fourth embodiment of the present invention may include a first printed circuit board410, a second printed circuit board420, a third printed circuit board430, and a core440.

The first printed circuit board410may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board410. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board410is comprised of a double-sided printed circuit board, and the second printed circuit board420and the third printed circuit board430may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board410. The primary metal pattern may be formed in a coil shape on a surface of the printed circuit board410.

A second printed circuit board420may be disposed on an upper surface of the first printed circuit board410. The cross-sectional area of the second printed circuit board420may be formed to be smaller than the cross-sectional area of the first printed circuit board410.

A secondary metal pattern may be wound on the surface of the second printed circuit board420. The secondary metal pattern may be wound on a surface of the second printed circuit board420in the form of a coil. The secondary metal pattern may be wound in a spiral form on a surface of the second printed circuit board420.

The second printed circuit board420may be formed in multiple layers. The multi-layered second printed circuit board420may be stacked in a vertical direction. More specifically, the second printed circuit board420disposed on the first printed circuit board410may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards420.

When the second printed circuit board420is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board420through a through hole.

A third printed circuit board430may be disposed on the lower surface of the first printed circuit board410. The third printed circuit board430may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board410.

A secondary metal pattern may be wound on a surface of the third printed circuit board430. The secondary metal pattern may be wound on a surface of the third printed circuit board430in the form of a coil. The secondary metal pattern may be wound in s spiral form on a surface of the third printed circuit board430.

The third printed circuit board430may be formed in multiple layers. The multi-layered third printed circuit board430may be stacked in a vertical direction. More specifically, the third printed circuit board420disposed on a lower surface of the first printed circuit board410may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the third printed circuit boards430.

When the third printed circuit board430is implemented as a multi-layer, the metal patterns disposed on a surface of the third printed circuit board430may be connected with a conductor through a through hole.

The second printed circuit board420and the third printed circuit board430may be disposed to face each other with respect to the first printed circuit board410.

The core440may include an upper core and a lower core.

The upper core may be disposed on an upper surface of the second printed circuit board420. The upper core may be disposed on a surface of the second printed circuit board420to induce the formation of a magnetic field. The upper core may be coupled to surround the secondary metal pattern from the outside.

The lower core may be disposed on a lower surface of the third printed circuit board430. The lower core may be disposed on a lower surface of the third printed circuit board430to induce the formation of a magnetic field. The lower core may be coupled to surround the secondary metal pattern from the outside.

The upper core and the lower core may be ferrite cores.

The first printed circuit board410, the second printed circuit board420, and the third printed circuit board430may be coupled through a coupling means. In addition, the second printed circuit board420and the third printed circuit board430may include a coupling portion coupled to the coupling means.

In detail, the first printed circuit board410, the second printed circuit board420, and the third printed circuit board430may be rivet-coupled to each other. Holes may be formed in the first printed circuit board410, the second printed circuit board420, and the third printed circuit board430so that a rivet450penetrates therethrough, respectively. At an upper end and a lower end of the rivet450, locking portions452and454being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the second printed circuit board420and the lower surface of the third printed circuit board430, respectively. According to the structure as described above, the coupling state of the first printed circuit board410, the second printed circuit board420, and the third printed circuit board430can be firmly fixed.

In addition, the first printed circuit board410and the second printed circuit board420and the third printed circuit board430may be electrically connected through the rivets450. In this case, an upper end and a lower end of the rivet450may be mounted on a lower surface of the third printed circuit board430or an upper surface of the second printed circuit board420, respectively.

FIG.8is a cross-sectional view of a printed circuit board module according to a fifth embodiment of the present invention.

Referring toFIG.8, the printed circuit board module500according to the fifth embodiment of the present invention may comprise a first printed circuit board510, a second printed circuit board520, a third printed circuit board530, and a core560.

The first printed circuit board510may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board510. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board510is comprised of a double-sided printed circuit board, and the second printed circuit board520and the third printed circuit board530may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board510. The primary metal pattern may be formed in a coil shape on a surface of the printed circuit board510.

A second printed circuit board520may be disposed on an upper surface of the first printed circuit board510. The cross-sectional area of the second printed circuit board520may be formed to be smaller than the cross-sectional area of the first printed circuit board510.

A secondary metal pattern may be wound on the surface of the second printed circuit board520. The secondary metal pattern may be wound on a surface of the second printed circuit board520in the form of a coil. The secondary metal pattern may be wound in a spiral form on a surface of the second printed circuit board520.

The second printed circuit board520may be formed in multiple layers. The multi-layered second printed circuit board520may be stacked in a vertical direction. More specifically, the second printed circuit board520disposed on the first printed circuit board510may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards520. The second printed circuit board520may include a second-first printed circuit board522disposed on an upper surface of the first printed circuit board510and a second-second printed circuit board524disposed on an upper surface of the second-first printed circuit board522.

When the second printed circuit board520is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board520through a through hole.

A third printed circuit board530may be disposed on the lower surface of the first printed circuit board510. The third printed circuit board530may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board510.

A secondary metal pattern may be wound on a surface of the third printed circuit board530. The secondary metal pattern may be wound on a surface of the third printed circuit board530in the form of a coil. The secondary metal pattern may be wound in a spiral form on a surface of the third printed circuit board530.

The third printed circuit board530may be formed in multiple layers. The multi-layered third printed circuit board530may be stacked in a vertical direction. More specifically, the third printed circuit board530disposed on the first printed circuit board510may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the third printed circuit boards530. The third printed circuit board530may include a third-first printed circuit board532disposed on an upper surface of the first printed circuit board510and a third-second printed circuit board534disposed on an upper surface of the third-first printed circuit board532.

When the third printed circuit board530is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the third printed circuit board530through a through hole.

The second printed circuit board520and the third printed circuit board530may be disposed to face each other with respect to the first printed circuit board510.

The core560may include an upper core and a lower core.

The upper core may be disposed on an upper surface of the second printed circuit board520. The upper core may be disposed on a surface of the second printed circuit board520to induce the formation of a magnetic field. The upper core may be coupled to surround the secondary metal pattern from the outside.

The lower core may be disposed on a lower surface of the third printed circuit board530. The lower core may be disposed on a lower surface of the third printed circuit board530to induce the formation of a magnetic field. The lower core may be coupled to surround the secondary metal pattern from the outside.

The upper core and the lower core may be ferrite cores.

The first printed circuit board510, the second printed circuit board520, and the third printed circuit board530may be rivet-coupled to each other. Holes may be formed in the first printed circuit board510, the second printed circuit board520, and the third printed circuit board530so that a rivet550penetrates therethrough, respectively. At the upper and lower ends of the rivet550, locking portions552and554being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the second printed circuit board520and the lower surface of the third printed circuit board530, respectively. According to the structure as described above, the coupling state of the first printed circuit board510, the second printed circuit board520, and the third printed circuit board530can be firmly fixed.

The rivets550may be provided in plurality and disposed to be spaced apart from each other.

In addition, the first printed circuit board510and the second printed circuit board520and the third printed circuit board530may be electrically connected through the rivets550. In this case, the upper end and lower end of the rivet550may be mounted on a lower surface of the third printed circuit board530or an upper surface of the second printed circuit board520, respectively.

FIG.9is a cross-sectional view of a printed circuit board module according to a sixth embodiment of the present invention.

Referring toFIG.9, the printed circuit board module600according to the sixth embodiment of the present invention may comprise a first printed circuit board610, a second printed circuit board620, a third printed circuit board630, and a core640.

The first printed circuit board610may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board610. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board610is comprised of a double-sided printed circuit board, and the second printed circuit board620and the third printed circuit board630may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board610. The primary metal pattern may be formed in a coil shape on a surface of the printed circuit board610.

A second printed circuit board620may be disposed on an upper surface of the first printed circuit board610. The cross-sectional area of the second printed circuit board620may be formed to be smaller than the cross-sectional area of the first printed circuit board610.

A secondary metal pattern may be wound on a surface of the second printed circuit board620. The secondary metal pattern may be wound on a surface of the second printed circuit board620in the form of a coil. The secondary metal pattern may be wound in a spiral form on a surface of the second printed circuit board620.

The second printed circuit board620may be formed in multiple layers. The multi-layered second printed circuit board620may be stacked in a vertical direction. More specifically, the second printed circuit board620disposed on the first printed circuit board610may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards620. The second printed circuit board620may include a second-first printed circuit board622disposed on an upper surface of the first printed circuit board610and a second-second printed circuit board624disposed on an upper surface of the second-first printed circuit board622.

When the second printed circuit board620is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board620through a through hole.

A third printed circuit board630may be disposed on the lower surface of the first printed circuit board610. The third printed circuit board630may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board610.

A secondary metal pattern may be wound on a surface of the third printed circuit board630. The secondary metal pattern may be wound on a surface of the third printed circuit board630in the form of a coil. The secondary metal pattern may be wound in a spiral form on a surface of the third printed circuit board630.

The third printed circuit board630may be formed in multiple layers. The multi-layered third printed circuit board630may be stacked in a vertical direction. More specifically, the third printed circuit board630disposed on the first printed circuit board610may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the third printed circuit boards630. The number of layers of the third printed circuit board630may be smaller than the number of layers of the second printed circuit board620. For example, the second printed circuit board620may be implemented as two sheets, and the third printed circuit board630may be implemented as one sheet.

The core640may include an upper core and a lower core.

The upper core may be disposed on an upper surface of the second printed circuit board620. The upper core may be disposed on a surface of the second printed circuit board620to induce the formation of a magnetic field. The upper core may be coupled to surround the secondary metal pattern from the outside.

The lower core may be disposed on a lower surface of the third printed circuit board630. The lower core may be disposed on a lower surface of the third printed circuit board630to induce the formation of a magnetic field. The lower core may be coupled to surround the secondary metal pattern from the outside.

The upper core and the lower core may be ferrite cores.

The first printed circuit board610, the second printed circuit board620, and the third printed circuit board630may be rivet-coupled to each other. Holes may be formed in the first printed circuit board610, the second printed circuit board620, and the third printed circuit board630so that a rivet650penetrates therethrough, respectively. At the upper and lower ends of the rivet650, locking portions652and654being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the second printed circuit board620and the lower surface of the third printed circuit board630, respectively. According to the structure as described above, the coupling state of the first printed circuit board610, the second printed circuit board620, and the third printed circuit board630can be firmly fixed.

The rivets650may be provided in plurality and disposed to be spaced apart from each other.

In addition, the first printed circuit board610and the second printed circuit board620and the third printed circuit board630may be electrically connected through the rivets650. In this case, the upper end and lower end of the rivet650may be mounted on a lower surface of the third printed circuit board630or an upper surface of the second printed circuit board620, respectively.

FIG.10is a cross-sectional view of a printed circuit board module according to a seventh embodiment of the present invention.

Referring toFIG.10, the printed circuit board module700according to the seventh embodiment of the present invention may comprise a first printed circuit board710, a second printed circuit board720, a third printed circuit board730, an upper core740, and a lower core750.

The first printed circuit board710may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board710. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board710is comprised of a double-sided printed circuit board, and the second printed circuit board720and the third printed circuit board730may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board710. The primary metal pattern may be formed in a coil shape on a surface of the printed circuit board710.

A second printed circuit board720may be disposed on an upper surface of the first printed circuit board710. The cross-sectional area of the second printed circuit board720may be formed to be smaller than the cross-sectional area of the first printed circuit board710.

A secondary metal pattern may be wound on a surface of the second printed circuit board720. The secondary metal pattern may be wound on a surface of the second printed circuit board720in the form of a coil.

The second printed circuit board720may be formed in multiple layers. The second printed circuit board720disposed on the second printed circuit board720may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards720.

When the second printed circuit board720is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board720through a through hole.

A third printed circuit board730may be disposed on the lower surface of the first printed circuit board710. The third printed circuit board730may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board710.

A secondary metal pattern may be wound on a surface of the third printed circuit board730. The secondary metal pattern may be wound on a surface of the third printed circuit board730in the form of a coil.

The second printed circuit board730may be formed in multiple layers. The multi-layered second printed circuit board730may be stacked in a vertical direction. More specifically, the second printed circuit board730disposed on the first printed circuit board710may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards730.

When the third printed circuit board730is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the third printed circuit board730through a through hole.

The core750may include an upper core and a lower core.

The upper core may be disposed on an upper surface of the second printed circuit board720. The upper core may be disposed on a surface of the second printed circuit board720to induce the formation of a magnetic field. The upper core may be coupled to surround the secondary metal pattern from the outside.

The lower core may be disposed on a lower surface of the third printed circuit board730. The lower core may be disposed on a lower surface of the third printed circuit board730to induce the formation of a magnetic field. The lower core may be coupled to surround the secondary metal pattern from the outside.

The upper core and the lower core may be ferrite cores.

The upper core and the lower core may be provided in plurality, respectively, and may be disposed to be spaced apart from each other. For example, a first upper core752and a second upper core754may be disposed on an upper surface of the second printed circuit board720. In addition, a first lower core752and a second lower core754may be disposed on a lower surface of the third printed circuit board730.

FIG.11is a cross-sectional view of a printed circuit board module according to an eighth embodiment of the present invention.

Referring toFIG.11, the printed circuit board module800according to the eighth embodiment of the present invention may comprise a first printed circuit board810, a second printed circuit board820, a third printed circuit board830, insulation layer860, and a core750.

The first printed circuit board810may be formed in a plate shape. One or more electronic components for driving may be disposed on an upper surface or a lower surface of the first printed circuit board810. The electronic components may be provided in plurality and disposed to be spaced apart from each other.

The first printed circuit board810is composed of a double-sided printed circuit board, and the second printed circuit board820and the third printed circuit board830may be disposed on an upper surface and a lower surface, respectively.

A primary metal pattern (not shown) may be wound on an upper surface or a lower surface of the first printed circuit board810. The first metal pattern may be formed in a coil shape on the surface of the first printed circuit board810.

A second printed circuit board820may be disposed on the lower surface of the first printed circuit board810. The second printed circuit board820may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board810.

A secondary metal pattern may be wound on a surface of the second printed circuit board820. The secondary metal pattern may be wound on a surface of the second printed circuit board820in the form of a coil.

The second printed circuit board820may be formed in multiple layers. The multi-layered second printed circuit board820may be stacked in a vertical direction. More specifically, the second printed circuit board820disposed on the first printed circuit board810may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit board820.

When the second printed circuit board820is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the second printed circuit board820through a through hole.

A third printed circuit board830may be disposed on the lower surface of the first printed circuit board810. The third printed circuit board830may be formed to have a cross-sectional area smaller than the cross-sectional area of the first printed circuit board810.

A secondary metal pattern may be wound on the surface of the third printed circuit board830. The secondary metal pattern may be wound on the surface of the second printed circuit board830in the form of a coil.

The second printed circuit board830may be formed in multiple layers. The multi-layered second printed circuit board830may be stacked in a vertical direction. More specifically, the second printed circuit board830disposed on the first printed circuit board810may be implemented in two or more sheets. In addition, the secondary metal pattern may be disposed on a surface of each of the second printed circuit boards830.

When the third printed circuit board830is implemented as a multi-layer, a conductor may be connected between the metal patterns disposed on a surface of the third printed circuit board830through a through hole.

The core750may include an upper core and a lower core.

The upper core may be disposed on an upper surface of the second printed circuit board820. The upper core may be disposed on a surface of the second printed circuit board820to induce the formation of a magnetic field. The upper core may be coupled to surround the secondary metal pattern from the outside.

The lower core may be disposed on a lower surface of the third printed circuit board830. The lower core may be disposed on a lower surface of the third printed circuit board830to induce the formation of a magnetic field. The lower core may be coupled to surround the secondary metal pattern from the outside.

The upper core and the lower core may be ferrite cores.

The insulation layer860can be disposed between the first printed circuit board810and the second printed circuit board820or between the first printed circuit board810and the third printed circuit board820. The insulation layer860may be formed of an insulating material. For example, the insulation layer810may be made of a resin or plastic material. Due to this, it is possible to insulate the plurality of printed circuit boards from each other.

Unlike this, the insulation layer860may be an air gap that separates the first printed circuit board810and the second printed circuit board820or the first printed circuit board810and the third printed circuit board820.

FIG.12is a cross-sectional view of a printed circuit board module according to a ninth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board, the second printed circuit board, the core, and the insulation layer will be referred to the previous embodiment.

Referring toFIG.12, the printed circuit board module900according to the present embodiment may comprise: a first printed circuit board910, a second printed circuit board920disposed on the first printed circuit board910, an insulation layer930disposed between the first printed circuit board910and the second printed circuit board920; and a core940disposed on a lower surface of the first printed circuit board910.

In the present embodiment, the first printed circuit board910, the insulation layer930and the second printed circuit board920may be coupled to each other through a rivet950.

The first printed circuit board910, the second printed circuit board920, and the third printed circuit board930may be rivet-coupled to each other. Holes may be formed in the first printed circuit board910, the second printed circuit board920, and the third printed circuit board930so that a rivet950penetrates therethrough, respectively. At the upper and lower ends of the rivet950, locking portions952and954being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the second printed circuit board920and the lower surface of the third printed circuit board930, respectively. According to the structure as described above, the coupling state of the first printed circuit board910, the second printed circuit board920, and the third printed circuit board930can be firmly fixed.

The rivets950may be provided in plurality and disposed to be spaced apart from each other.

In addition, the first printed circuit board910and the second printed circuit board920and the third printed circuit board930may be electrically connected through the rivets950. In this case, the upper end and lower end of the rivet950may be mounted on a lower surface of the first printed circuit board910or an upper surface of the second printed circuit board920, respectively.

FIG.13is a cross-sectional view of a printed circuit board module according to a tenth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board, the second printed circuit board, the core, and the insulation layer will be referred to the previous embodiment.

Referring toFIG.13, the printed circuit board module1000according to the present embodiment may comprise: a first printed circuit board1010, a second printed circuit board1020disposed on the first printed circuit board1010, an upper core1050disposed at an upper portion of the second printed circuit board1020; a lower core1060disposed at a lower portion of the first printed circuit board1010; a first insulation layer1030disposed between the upper core1050and the second printed circuit board1020; and a second insulation layer1040disposed between the first printed circuit board1010and the lower core1060.

The first insulation layer1030may be disposed on an upper surface of the second printed circuit board1020. A cross-sectional shape of the first insulation layer1030may correspond to a cross-sectional shape of the second printed circuit board1020. A cross-sectional shape of the second insulation layer1040may correspond to a cross-sectional shape of the first insulation layer1030.

In the present embodiment, the first printed circuit board1010, the first insulation layer1030, the second insulation layer1040, and the second printed circuit board1020may be coupled to each other through a rivet1070.

Holes may be formed in the first printed circuit board1010, the second printed circuit board1020, and the first insulation layer1030so that a rivet1070penetrates therethrough, respectively. At the upper and lower ends of the rivet1070, locking portions1072and1074being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the first insulation layer1030and the lower surface of the second insulation layer1040, respectively.

FIG.14is a cross-sectional view of a printed circuit board module according to an eleventh embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board, the second printed circuit board, the core, and the insulation layer will be referred to the previous embodiment.

Referring toFIG.14, the printed circuit board module1100according to the present embodiment may comprise: a first printed circuit board1110; a second printed circuit board1120disposed at an upper portion of the first printed circuit board1110; an upper core1160disposed at a lower portion of the second printed circuit board1120; a lower core1170disposed at a lower portion of the first printed circuit board1110; a first insulation layer1130disposed between the first printed circuit board1110and the second printed circuit board1020; a second insulation layer1140disposed between the upper core1160and the second printed circuit board1120; and a third insulation layer1150disposed between the first printed circuit board1110and the lower core1170.

The first insulation layer1130may be disposed on an upper surface of the first printed circuit board1110. A cross-sectional shape of the first insulation layer1130may correspond to a cross-sectional shape of the second printed circuit board1120.

The second insulation layer1140may be disposed on an upper surface of the second printed circuit board1120. A cross-sectional shape of the second insulation layer1140may correspond to a cross-sectional shape of the first insulation layer1130.

The third insulation layer1150may be disposed on a lower surface of the first printed circuit board1110. A cross-sectional shape of the third insulation layer1150may correspond to a cross-sectional shape of the first insulation layer1130or the second insulation layer1140.

In the present embodiment, the first printed circuit board1110, the first insulation layer1130, the second insulation layer1140, the third insulation layer1150, and the second printed circuit board1120may be coupled to each other through a rivet1070.

Holes may be formed in the first printed circuit board1110, the first insulation layer1130, the second insulation layer1140, the third insulation layer1150, and the second printed circuit board1120so that a rivet1180penetrates therethrough, respectively. At the upper and lower ends of the rivet1180, locking portions1182and1184being formed to have a larger cross-sectional area than other areas may be formed so as to be caught on the upper surface of the second insulation layer1140and the lower surface of the third insulation layer1150, respectively.

FIG.15is a cross-sectional view of a printed circuit board module according to a twelfth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board and the second printed circuit board will be referred to the previous embodiments.

The printed circuit board module1300according to the present embodiment may comprise: a first printed circuit board1310; a second printed circuit board1320disposed on an upper surface of the first printed circuit board1310; an upper core1330disposed on an upper surface of the second printed circuit board1320; and a lower core1340disposed on a lower surface of the first printed circuit board1310.

The first printed circuit board1310and the second printed circuit board1320may be rivet-coupled through a rivet1350.

In the present embodiment, at least one or more electronic components1322for driving may be disposed on the second printed circuit board1320. The electronic components1322may be disposed in an edge region spaced apart from the metal pattern among the outer surface of the second printed circuit board1320.

FIG.16is a cross-sectional view of a printed circuit board module according to a thirteenth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board and the second printed circuit board will be referred to the previous embodiments.

The printed circuit board module1400according to the present embodiment may comprise: a first printed circuit board1410; a second printed circuit board1420disposed at an upper portion of the first printed circuit board1410; an upper core1430disposed on an upper surface of the second printed circuit board1420; and a lower core1440disposed on a lower surface of the first printed circuit board1410.

In addition, the printed circuit board module1400according to the present embodiment being disposed between the first printed circuit board1410and the second printed circuit board1420may include an insulation layer1430for insulating the first printed circuit board1410and the second printed circuit board1420from each other.

The first printed circuit board1410, the second printed circuit board1420, and the insulation layer1430may be rivet-coupled through a rivet1460.

In the present embodiment, at least one or more electronic components1422for driving may be disposed on the second printed circuit board1420. The electronic components1422may be disposed in an edge region being spaced apart from the metal pattern on an outer surface of the second printed circuit board1420.

FIG.17is a cross-sectional view of a printed circuit board module according to a fourteenth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board and the second printed circuit board will be referred to the previous embodiments.

The printed circuit board1500according to the present embodiment may include a first printed circuit board1510and a second printed circuit board1520disposed on an upper surface of the first printed circuit board1510. An upper core1530and a lower core1540may be respectively disposed on an upper surface of the second printed circuit board1520and a lower surface of the first printed circuit board1510.

The first printed circuit board1510may be a double-sided printed circuit board. Accordingly, first electronic components1512and second electronic components1514may be respectively disposed on an upper surface and a lower surface of the first printed circuit board1510.

The printed circuit board module1500according to the present embodiment may be disposed inside the housing.

A protruded portion1620for supporting at least a portion of a lower surface of the first printed circuit board1510may be formed on an inner surface of the housing. The protruded portion1620may be disposed to be protruded inward than other regions of the inner surface of the housing. For example, the upper surface of the protruded portion1620may support a lower surface of the first printed circuit board1510. An upper surface of the protruded portion1620may be in contact with a lower surface of the first printed circuit board1510.

In addition, a heat dissipation pad1610may be disposed between the inner surface of the housing and the first electronic components1512or between the inner surface of the housing and the second electronic components1514. One surface of the heat dissipation pad1610is in contact with the first electronic components1512or the second electronic components1514, and the other surface is in contact with the inner surface of the housing, so that the heat generated from the first electronic components1512or the second electronic components1514can be delivered to the housing.

The first printed circuit board1510and the second printed circuit board1520may be coupled to each other through a rivet. In addition, the first printed circuit board1510and the housing may be coupled to each other through a rivet. At this time, at least a portion of the rivet may be disposed to penetrate through the first printed circuit board1510, and at least another portion of the rivet may penetrate through the housing and protrude to the outside.

FIG.18is a cross-sectional view of a printed circuit board module according to a fifteenth embodiment of the present invention.

In the present embodiment, the configuration and functions related to the first printed circuit board, the second printed circuit board, the upper core, and the lower core will be referred to the previous embodiment.

Referring toFIG.18, a printed circuit board module1700according to the present embodiment may comprise: a first printed circuit board1710, a second printed circuit board1720on which the first printed circuit board1710is disposed on an upper surface thereof; a lower core1740disposed on a lower surface of the first printed circuit board1710; and an upper core1730disposed on an upper surface of the second printed circuit board1730.

The first printed circuit board1710and the second printed circuit board1720may be coupled to each other through a rivet1750. Holes may be formed in the first printed circuit board1710and the second printed circuit board1720so that the rivet1750penetrates therethrough.

The rivets1750may be provided in plurality, and may be disposed to be spaced apart from each other. For example, four rivets1750may be provided to be spaced apart from each other. As the amount of the rivet1750increases, heat generated from the first printed circuit board1710and the second printed circuit board1720may be easily discharged to the outside.

In the above description, it is described that all the components constituting the embodiments of the present invention are combined or operated in one, but the present invention is not necessarily limited to these embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, the terms “comprise”, “include” or “having” described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus it should be construed that it does not exclude other components, but further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.