US 11,936,204 B2
Wireless power transmitter and receiver for vehicle
Jinmoo Park, Seoul (KR); Jeongkyo Seo, Seoul (KR); Beomseok Chae, Seoul (KR); Jaesung Lee, Seoul (KR); and Jihyun Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Mar. 20, 2023, as Appl. No. 18/186,627.
Application 18/186,627 is a continuation of application No. 17/244,562, filed on Apr. 29, 2021, granted, now 11,626,758.
Application 17/244,562 is a continuation of application No. 16/450,263, filed on Jun. 24, 2019, granted, now 11,005,299, issued on May 11, 2021.
Application 16/450,263 is a continuation of application No. 15/541,180, granted, now 10,505,398, issued on Dec. 10, 2019, previously published as PCT/KR2016/012682, filed on Nov. 4, 2016.
Claims priority of provisional application 62/251,118, filed on Nov. 5, 2015.
Prior Publication US 2023/0231419 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/12 (2016.01); B60L 53/122 (2019.01); B60L 53/124 (2019.01); B60L 53/126 (2019.01); B60L 53/38 (2019.01); H01F 38/14 (2006.01); H02J 7/00 (2006.01); H02J 50/90 (2016.01)
CPC H02J 50/12 (2016.02) [B60L 53/122 (2019.02); B60L 53/124 (2019.02); B60L 53/126 (2019.02); B60L 53/38 (2019.02); H01F 38/14 (2013.01); H02J 7/00304 (2020.01); H02J 7/00308 (2020.01); H02J 50/90 (2016.02); H02J 7/00309 (2020.01)] 4 Claims
OG exemplary drawing
 
1. A wireless power transmitter configured to transfer power to a wireless power receiver, comprising:
primary coils comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns;
a shielding; and
a full-bridge inverter,
wherein the first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center,
wherein the top coil lies on a plane surface in the middle between the first and second bottom coils,
wherein a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 21 mm to 25 mm,
wherein the first and second bottom coils have a height of 48 mm to 50 mm and a width of 43 mm to 45 mm, and the through hole in the first and second bottom coils has a height of 25 mm to 27 mm and a width of 21 mm to 23 mm,
wherein the top coil has a height of 45 mm to 47 mm and a width of 48.5 mm to 50.5 mm, and the through hole in the top coil has a height of 20 mm to 22 mm and a width of 24.5 mm to 26.5 mm,
wherein the first and second bottom coils and the top coil have a thickness of 0.9 mm to 1.3 mm,
wherein an amount of power which is transferred is controlled based on an input voltage of the full-bridge inverter,
wherein the input voltage has a range of 1 V to 18 V,
wherein an operating frequency to control the amount of the power is within a range of 140 kHz to 150 kHz,
wherein an assembly of the primary coils and the shielding has a self-inductance value of 11.3 μH,
wherein the full-bridge invertor drives a series capacitance, and
wherein a value of the series capacitance is 139 nF.