US 12,291,115 B2
On-board charging device for electric vehicle, system, and methods for wirelessly charging electric vehicle
Daniel Gaona, Duesseldorf (DE)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 28, 2023, as Appl. No. 18/175,850.
Application 18/175,850 is a continuation of application No. PCT/EP2021/067343, filed on Jun. 24, 2021.
Prior Publication US 2023/0202319 A1, Jun. 29, 2023
Int. Cl. B60L 53/22 (2019.01); B60L 53/12 (2019.01); H01M 10/44 (2006.01); H02J 50/00 (2016.01); H02J 50/12 (2016.01); H02J 50/40 (2016.01); H02M 1/42 (2007.01); H02M 3/335 (2006.01)
CPC B60L 53/22 (2019.02) [B60L 53/12 (2019.02); H01M 10/44 (2013.01); H02J 50/005 (2020.01); H02J 50/12 (2016.02); H02J 50/40 (2016.02); H02M 1/42 (2013.01); H02M 3/33573 (2021.05); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); H01M 2220/20 (2013.01); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An on-board charging (OBC) device for an electric vehicle and comprising:
a mains input circuit comprising a power factor correction (PFC) converter;
a mains-side direct current-to-alternating current (DC/AC) converter;
a transformer comprising a mains-side coil and a battery-side coil, wherein the mains-side coil comprises a first center point, wherein the battery-side coil comprises a second center point, wherein the mains-side coil is arranged at an offset overlap to the battery-side coil with the first center point being displaced from the second center point, and wherein the transformer is configured to:
magnetically couple to a transmitter (TX) pad of an external wireless power transmitter (WPT); and
receive first power at the mains-side coil and the battery-side coil from the WPT;
a battery-side alternating current-to-direct current (AC/DC) converter;
a battery connector; and
at least one bypass switch configured to selectively close for galvanically connecting the DC/AC converter to the AC/DC converter,
wherein the OBC device is configured to send second power to the battery connector via the AC/DC converter and the mains-side converter when the at least one bypass switch is closed and the transformer is magnetically coupled to the WPT.