US 11,784,574 B2
Automotive power converter
Yantao Song, Northville, MI (US); Baoming Ge, Okemos, MI (US); Lihua Chen, Farmington Hills, MI (US); and Serdar Hakki Yonak, Ann Arbor, MI (US)
Assigned to FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Nov. 30, 2021, as Appl. No. 17/537,629.
Prior Publication US 2023/0170811 A1, Jun. 1, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 7/219 (2006.01); H02M 7/5387 (2007.01); H02J 7/34 (2006.01); B60L 50/60 (2019.01); B60R 16/033 (2006.01); B60L 53/53 (2019.01); B60L 53/24 (2019.01); B60L 50/40 (2019.01)
CPC H02M 3/33573 (2021.05) [B60L 50/40 (2019.02); B60L 50/60 (2019.02); B60L 53/24 (2019.02); B60L 53/53 (2019.02); B60R 16/033 (2013.01); H02J 7/342 (2020.01); H02M 3/33576 (2013.01); H02M 7/219 (2013.01); H02M 7/5387 (2013.01); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); H02J 2207/20 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A power system for a vehicle comprising:
a traction battery having an output voltage;
a transformer including a coil having a terminal; and
a power converter, electrically connected between the traction battery and transformer, including a plurality of capacitors and a plurality of switches arranged such that
four of the switches are in series,
first and second of the capacitors are in series,
the terminal is directly connected between the first and second of the capacitors and directly connected between two upper of the four of the switches and two lower of the four of the switches,
when a first subset of the switches are ON, two of the capacitors are in parallel, an AC voltage across the coil is in a positive half cycle, and a voltage across each of the two of the capacitors is half the output voltage, and
when a second subset of the switches are ON, one of the two capacitors and another of the capacitors are in parallel, the AC voltage across the coil is in a negative half cycle, and a voltage across each of the one of the of two capacitors and the another of the capacitors is half the output voltage.