PCB design for electrically-actuated turbochargers

• US 10,462,937 B1
• Filed: 04/11/2019
• Issued: 10/29/2019
• Est. Priority Date: 04/11/2019
• Status: Active Grant

• Current Assignee: BorgWarner Incorporated
• Original Assignee: BorgWarner Incorporated
• Inventors: Louco, Lathom, Carter, Jeffrey
• Primary Examiner(s): Aychillhum, Andargie M
• Application Number:
  US16/381,476
• Time in Patent Office: 201 Days
• Field of Search: 361760, 361761
• CPC Class Codes: F02B 37/12 Control of the pumps
• CPC Class Codes: H05K 1/0207 using internal conductor planes parallel to the surface for thermal conduction, e.g. power planes
• CPC Class Codes: H05K 1/0209 External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
• CPC Class Codes: H05K 1/183 Components mounted in and supported by recessed areas of the printed circuit board
• CPC Class Codes: H05K 2201/064 Fluid cooling, e.g. by integral pipes
• CPC Class Codes: H05K 2201/10166 Transistor
• CPC Class Codes: H05K 3/0061 onto a metallic substrate, e.g. a heat sink heat sinks for electric apparatus H05K7/20
• CPC Class Codes: H05K 7/209 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20909 takes precedence
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A printed circuit board (PCB), including electrical components for controlling electrically-actuated turbochargers, having a switching device configured to be electrically connected to an electrical power source and electrically connected to an electric motor of an electrically-actuated turbocharger, wherein the switching device is physically attached to a side of the PCB within a cavity formed in the side of the PCB such that at least a portion of the switching device is below the side of the PCB.

Claims

1. A printed circuit board (PCB) including electrical components for controlling electrically-actuated turbochargers, comprising:

a switching device configured to be electrically connected to an electrical power source and electrically connected to an electric motor of an electrically-actuated turbocharger, wherein the switching device is physically attached to a side of the PCB within a cavity formed in the side of the PCB such that at least a portion of the switching device is below the side of the PCB.

2. The PCB recited in claim 1, wherein a gate driver is positioned on the PCB to overlap at least a portion of the switching device along the Z-axis.

3. The PCB recited in claim 1, wherein an exposed surface of the switching device contacts a heat sink or thermal grease of the heat sink.

4. The PCB recited in claim 2, wherein at least a portion of a body of the switching device coincides with a portion of a body of the gate driver along a Z-axis.

5. The PCB recited in claim 1, wherein a top surface of the switching device is substantially flush with the side of the PCB.

6. The PCB recited in claim 5, wherein the top surface of the switching device contacts a heat sink or thermal grease of the heat sink.

7. The PCB recited in claim 1, wherein a top surface of the switching device is substantially flush with the side of the PCB.

8. A printed circuit board (PCB) including electrical components for controlling electrically-actuated turbochargers, comprising:

a first switching device configured to be electrically connected to an electrical power source and electrically connected to an electric motor of an electrically-actuated turbocharger, wherein the switching device is physically attached to a first side of the PCB;

a second switching device configured to be electrically connected to the electrical power source and electrically connected to the electric motor of the electrically-actuated turbocharger, wherein the switching device is physically attached to a second side of the PCB within a cavity formed in a second side of the PCB such that at least a portion of the second switching device is below the second side of the PCB.

9. The PCB recited in claim 8, wherein the first switching device is physically attached to the first side of the PCB within a cavity formed in the first side of the PCB such that at least a portion of the first switching device is below the surface of the PCB.

10. The PCB recited in claim 8, wherein a portion of a body of a gate driver is attached to the PCB to coincide with a portion of a body of the second switching device along the Z-axis.

11. The PCB recited in claim 10, wherein at least a portion of a body of the second switching device coincides with a portion of a body of the gate driver along a Z-axis.

12. The PCB recited in claim 8, wherein a portion of a body of the first switching device is positioned on the PCB to coincide with a portion of a body of the second switching device along the Z-axis.

13. The PCB recited in claim 8, wherein an exposed surface of the second switching device contacts a heat sink or thermal grease of the heat sink.

14. The PCB recited in claim 8, wherein a top surface of the second switching device is substantially flush with the second side of the PCB.

15. The PCB recited in claim 14, wherein the top surface of the second switching device contacts a heat sink or thermal grease of the heat sink.

16. The PCB recited in claim 15, wherein a top surface of the first switching device is substantially flush with the first side of the PCB.

17. A printed circuit board (PCB) including electrical components for controlling electrically-actuated turbochargers, comprising:

a first switching device configured to be electrically connected to an electrical power source and electrically connected to an electric motor of an electrically-actuated turbocharger, wherein the switching device is physically attached to a first side of the PCB within a first cavity formed in the first side of the PCB such that at least a portion of the first switching device is below the first side of the PCB; and

a second switching device configured to be electrically connected to the electrical power source and electrically connected to the electric motor of the electrically-actuated turbocharger, wherein the switching device is physically attached to the first side of the PCB within a second cavity formed in the first side of the PCB such that at least a portion of the second switching device is below the first surface of the PCB.

18. The PCB recited in claim 17, wherein a portion of a body of a gate driver is positioned on the second side of the PCB to coincide with a portion of a body of the first switching device or the second switching device along the Z-axis.

19. The PCB recited in claim 17, wherein a top surface of the first switching device is substantially flush with the first side of the PCB and the second switching device is substantially flush with the second side of the PCB.

20. The PCB recited in claim 19, further comprising a first heat sink abutting the top surface of the first switching device and a second heat sink abutting the top surface of the second switching device.