US 12,240,332 B2
Torque-equalizing fault response for loss of low voltage DC electrical power in electric vehicle
Steven E. Schulz, Torrance, CA (US); David Tang, Rancho Cucamonga, CA (US); Silva Hiti, Redondo Beach, CA (US); and Richard M. Breese, Los Angeles, CA (US)
Assigned to Rivian IP Holdings, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Plymouth, MI (US)
Filed on May 10, 2023, as Appl. No. 18/195,568.
Application 18/195,568 is a continuation of application No. 17/389,072, filed on Jul. 29, 2021, granted, now 11,673,473.
Prior Publication US 2023/0271503 A1, Aug. 31, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B60L 3/00 (2019.01); B60L 15/04 (2006.01); B60L 15/20 (2006.01)
CPC B60L 3/003 (2013.01) [B60L 3/0092 (2013.01); B60L 15/04 (2013.01); B60L 15/20 (2013.01); B60L 2210/10 (2013.01); B60L 2240/527 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dual power inverter module comprising:
a detection circuit configured to detect loss of low voltage direct current (DC) electrical power supplied to a controller for a first power inverter and a second power inverter of a drive unit for an electric vehicle;
a first backup power circuit associated with the first power inverter and a second backup power circuit associated with the second power inverter, each backup power circuit being configured to convert high voltage DC electrical power to the low voltage DC electrical power responsive to detection of the loss of the low voltage DC electrical power supplied to the controller; and
three-phase short circuitry configured to apply a same fault action to the first power inverter and the second power inverter responsive to detection of the loss of the low voltage DC electrical power supplied to the controller, wherein the same fault action is based on a speed of a first motor and a speed of a second motor.