US 12,484,203 B2
Systems and methods for controlled active discharge for inverter for electric vehicle
Seyed R. Zarabadi, Kokomo, IN (US)
Assigned to BorgWarner US Technologies LLC, Wilmington, DE (US)
Filed by BorgWarner US Technologies LLC, Wilmington, DE (US)
Filed on Apr. 10, 2023, as Appl. No. 18/297,738.
Claims priority of provisional application 63/378,601, filed on Oct. 6, 2022.
Claims priority of provisional application 63/377,486, filed on Sep. 28, 2022.
Claims priority of provisional application 63/377,512, filed on Sep. 28, 2022.
Claims priority of provisional application 63/377,501, filed on Sep. 28, 2022.
Prior Publication US 2024/0106347 A1, Mar. 28, 2024
Int. Cl. H02M 7/5387 (2007.01); B60L 3/00 (2019.01); B60L 15/00 (2006.01); B60L 15/08 (2006.01); B60L 50/40 (2019.01); B60L 50/51 (2019.01); B60L 50/60 (2019.01); B60L 50/64 (2019.01); B60L 53/20 (2019.01); B60L 53/22 (2019.01); B60L 53/62 (2019.01); B60R 16/02 (2006.01); H01L 21/48 (2006.01); H01L 23/00 (2006.01); H01L 23/15 (2006.01); H01L 23/367 (2006.01); H01L 23/373 (2006.01); H01L 23/40 (2006.01); H01L 23/467 (2006.01); H01L 23/495 (2006.01); H01L 23/538 (2006.01); H01L 25/00 (2006.01); H02M 1/00 (2007.01); H02M 1/08 (2006.01); H02M 1/084 (2006.01); H02M 1/088 (2006.01); H02M 1/12 (2006.01); H02M 1/32 (2007.01); H02M 1/42 (2007.01); H02M 1/44 (2007.01); H02M 3/335 (2006.01); H02M 7/00 (2006.01); H02M 7/537 (2006.01); H02M 7/5395 (2006.01); H02P 27/06 (2006.01); H02P 27/08 (2006.01); H02P 29/024 (2016.01); H02P 29/68 (2016.01); H05K 1/14 (2006.01); H05K 1/18 (2006.01); H05K 5/02 (2006.01); H05K 7/20 (2006.01); H10D 64/01 (2025.01); B60L 15/20 (2006.01); G01R 15/20 (2006.01); G06F 1/08 (2006.01); G06F 13/40 (2006.01); H01L 23/473 (2006.01); H01L 25/07 (2006.01); H02J 7/00 (2006.01); H03K 19/20 (2006.01)
CPC H02M 7/5387 (2013.01) [B60L 3/003 (2013.01); B60L 15/007 (2013.01); B60L 15/08 (2013.01); B60L 50/40 (2019.02); B60L 50/51 (2019.02); B60L 50/60 (2019.02); B60L 50/64 (2019.02); B60L 53/20 (2019.02); B60L 53/22 (2019.02); B60L 53/62 (2019.02); B60R 16/02 (2013.01); H01L 21/4882 (2013.01); H01L 23/15 (2013.01); H01L 23/3672 (2013.01); H01L 23/3675 (2013.01); H01L 23/3735 (2013.01); H01L 23/4006 (2013.01); H01L 23/467 (2013.01); H01L 23/49562 (2013.01); H01L 23/5383 (2013.01); H01L 24/32 (2013.01); H01L 24/33 (2013.01); H01L 25/50 (2013.01); H02M 1/0009 (2021.05); H02M 1/0054 (2021.05); H02M 1/08 (2013.01); H02M 1/084 (2013.01); H02M 1/088 (2013.01); H02M 1/123 (2021.05); H02M 1/32 (2013.01); H02M 1/322 (2021.05); H02M 1/327 (2021.05); H02M 1/4258 (2013.01); H02M 1/44 (2013.01); H02M 3/33523 (2013.01); H02M 7/003 (2013.01); H02M 7/537 (2013.01); H02M 7/53871 (2013.01); H02M 7/53875 (2013.01); H02M 7/5395 (2013.01); H02P 27/06 (2013.01); H02P 27/08 (2013.01); H02P 27/085 (2013.01); H02P 29/024 (2013.01); H02P 29/027 (2013.01); H02P 29/68 (2016.02); H05K 1/145 (2013.01); H05K 1/182 (2013.01); H05K 5/0247 (2013.01); H05K 7/20154 (2013.01); H05K 7/2039 (2013.01); H05K 7/2049 (2013.01); H05K 7/20854 (2013.01); H05K 7/209 (2013.01); H10D 64/018 (2025.01); B60L 15/20 (2013.01); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); B60L 2210/42 (2013.01); B60L 2210/44 (2013.01); B60L 2240/36 (2013.01); G01R 15/20 (2013.01); G06F 1/08 (2013.01); G06F 13/4004 (2013.01); G06F 2213/40 (2013.01); H01L 2023/405 (2013.01); H01L 2023/4087 (2013.01); H01L 23/473 (2013.01); H01L 25/072 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/32245 (2013.01); H01L 2224/33181 (2013.01); H02J 7/0063 (2013.01); H02J 2207/20 (2020.01); H02P 2207/05 (2013.01); H03K 19/20 (2013.01); H05K 1/181 (2013.01); H05K 7/20927 (2013.01); H05K 2201/042 (2013.01); H05K 2201/10166 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes:
a power switch including a drain terminal, a source terminal, and a gate terminal; and
one or more controllers configured to:
detect a temperature of the power switch, a rate of change in current of the power switch, and a filtered current of the power switch,
control a pulse width of a gate control signal to the gate terminal based on the detected temperature of the power switch, the detected rate of change in current of the power switch, and the detected filtered current of the power switch, and
perform an N average determination, wherein the N average determination includes:
applying N pulses with a first pulse width and a period to the power switch,
storing, during each period of the applied N pulses, the detected temperature of the power switch, the detected rate of change in current of the power switch, and the detected filtered current of the power switch, and
determining an average of the N stored temperatures, an average of the N stored rates of change in current, and an average of the N stored filtered currents.