Pcb core laminate for wireless power charger and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2025374415-A1
Application number	US-202418813388-A
Country	US
Kind code	A1
Filing date	Aug 23, 2024
Priority date	May 29, 2024
Publication date	Dec 4, 2025
Grant date	—

Abstract

An embodiment printed circuit board (PCB) core laminate for a wireless power charger is provided. The PCB core laminate includes a heat-dissipating material and a PCB core embedded in the heat-dissipating material, wherein the PCB core includes a PCB substrate and printed circuit patterns located on surfaces of the PCB substrate.

First claim

What is claimed is:

1 . A printed circuit board (PCB) core laminate for a wireless power charger, the PCB core laminate comprising:
a heat-dissipating material; and a PCB core embedded in the heat-dissipating material, wherein the PCB core comprises a PCB substrate and printed circuit patterns located on surfaces of the PCB substrate.

2 . The PCB core laminate of claim 1 , wherein:
a plurality of PCB cores are embedded in the heat-dissipating material; and the plurality of PCB cores are stacked.

3 . The PCB core laminate of claim 1 , wherein:
a plurality of heat-dissipating materials are present; a plurality of PCB cores are embedded in each of the heat-dissipating materials, respectively; and the plurality of heat-dissipating materials are stacked.

4 . The PCB core laminate of claim 1 , wherein the heat-dissipating material comprises one or more types of resins among an ethylene-based resin, an acrylic-based resin, and an amide-based resin.

5 . The PCB core laminate of claim 4 , wherein the heat-dissipating material further comprises one or more types of inorganic materials that include BN or Al 2 O 3 .

6 . The PCB core laminate of claim 1 , wherein, in the PCB core, the printed circuit patterns are disposed on upper and lower surfaces of the PCB substrate.

7 . The PCB core laminate of claim 6 , wherein, in a cross-section of the PCB core laminate, the printed circuit pattern disposed on the upper surface of the PCB substrate and the printed circuit pattern disposed on the lower surface of the PCB substrate are arranged to correspond to each other.

8 . The PCB core laminate of claim 6 , wherein, in a cross-section of the PCB core laminate, a difference in pattern width between the printed circuit pattern disposed on the upper surface of the PCB substrate and the printed circuit pattern disposed on the lower surface of the PCB substrate is smaller than or equal to 5%.

9 . The PCB core laminate of claim 1 , wherein a cut-out portion penetrating a portion of the PCB substrate is present in the PCB core.

10 . The PCB core laminate of claim 9 , wherein the cut-out portion is present through a central portion of the PCB substrate in the PCB core.

11 . The PCB core laminate of claim 10 , wherein the cut-out portion is filled with the heat-dissipating material.

12 . The PCB core laminate of claim 9 , wherein the cut-out portion is filled with the heat-dissipating material.

13 . The PCB core laminate of claim 1 , wherein, in a cross-section of the PCB core laminate, heat-conducting frames are connected to side end portions of the heat-dissipating material.

14 . The PCB core laminate of claim 1 , wherein a magnetic sheet and a control PCB are stacked on the heat-dissipating material.

15 . The PCB core laminate of claim 14 , wherein a second heat-dissipating material is interposed between the magnetic sheet and the control PCB.

16 . A method of manufacturing a printed circuit board (PCB) core laminate for a wireless power charger, the method comprising:
integrating a PCB core into a heat-dissipating material by insert-injection.

17 . The method of claim 16 , wherein integrating the PCB core is performed by insert-injecting a plurality of PCB cores into the heat-dissipating material in a stacked form.

18 . The method of claim 16 , wherein:
integrating the PCB core is performed two or more times; and integrated heat-dissipating materials are stacked.

19 . The method of claim 16 , wherein:
the PCB core comprises a PCB substrate and printed circuit patterns present on surfaces of the PCB substrate; a cut-out portion penetrating a portion of the PCB substrate is present in the PCB core; the cut-out portion is filled with the heat-dissipating material; and the heat-dissipating material comprises one or more types of resins among an ethylene-based resin, an acrylic-based resin, and an amide-based resin.

20 . The method of claim 19 , wherein the heat-dissipating material further comprises one or more types of inorganic materials between BN and Al 2 O 3 .

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Amosense Co Ltd

Inventors

• Kim Youngmin
• Ko Jae-Jun
• Kim Chol Han
• Kim Kwangyeol

Classifications

• H05K2201/086

  for inductive purposes, e.g. printed inductor with ferrite core · CPC title

• H05K1/185

  associated with components encapsulated in the insulating substrate of the PCBs; associated with components incorporated in internal layers of multilayer circuit boards · CPC title

• H05K3/284

  for encapsulating mounted components (H05K1/185 takes precedence) · CPC title

• H05K1/0233

  Filters, inductors or a magnetic substance · CPC title

• H05K1/0373

  containing additives, e.g. fillers (H05K1/036 takes precedence) · CPC title