US 12,319,152 B2
Switchable battery disconnect unit for electrified vehicles using protection devices including contractors and integrated circuit breaks
William Mu, Troy, MI (US); Timothy Mrosewske, Berkley, MI (US); Karina K Morley, New Hudson, MI (US); and Qingyuan Tan, LaSalle (CA)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Oct. 31, 2023, as Appl. No. 18/498,444.
Prior Publication US 2025/0135894 A1, May 1, 2025
Int. Cl. B60L 3/00 (2019.01); B60L 3/04 (2006.01); H02H 5/04 (2006.01)
CPC B60L 3/0046 (2013.01) [B60L 3/04 (2013.01); H02H 5/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A switchable battery disconnect unit (BDU) system for an electrified vehicle, the switchable BDU system comprising:
a switchable BDU for a high voltage battery system of the electrified vehicle, the switchable BDU including one or more protection devices that each include both a contactor and an integrated circuit breaker; and
a controller configured to:
control the switchable BDU to switch between 400 Volts (400V) and 800 V direct current (DC) modes for powering an electrified powertrain of the electrified vehicle and for recharging the high voltage battery system; and
monitor and reset the protection device in response to an actuation of the integrated circuit breaker,
wherein each protection device does not include a replaceable thermal fuse.