US 11,850,950 B2
High voltage powered solid state fuse with battery power control
Muhammad Hussain Alvi, Troy, MI (US); Chandra S. Namuduri, Troy, MI (US); and Renato Amorim Torres, Madison, WI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jan. 19, 2022, as Appl. No. 17/578,950.
Prior Publication US 2023/0226915 A1, Jul. 20, 2023
Int. Cl. B60L 3/00 (2019.01); H02J 7/00 (2006.01); H02M 7/537 (2006.01)
CPC B60L 3/0046 (2013.01) [H02J 7/0031 (2013.01); H02J 7/00712 (2020.01); H02M 7/537 (2013.01); B60L 2210/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power control system for an electric vehicle, comprising:
a power inverter comprising a first side, a second side, and a plurality of power switches, wherein the second side is configured to connect to an electric machine; and
a solid state fuse including:
a power switch including a first terminal in communication with the first terminal of a rechargeable energy storage system (RESS) of the electric vehicle and a second terminal in communication with the first side of the power inverter;
a DC-DC converter configured to convert a first voltage output by the RESS of the electric vehicle to a second voltage;
one or more sensors including a voltage sensor configured to sense voltage output by the RESS; and
a fuse controller configured to receive power from the DC-DC converter, communicate with the voltage sensor, calculate voltage ripple based on the sensed voltage, compare the voltage ripple to a predetermined voltage ripple threshold, and cause the power switch to selectively open when the voltage ripple is greater than the predetermined voltage ripple threshold.