US 12,337,823 B2
Preventing electric vehicle brake torque
Xuemei Sun, Canton, MI (US); David Michael Bevan, Northville, MI (US); Jonathan Andrew Butcher, Farmington, MI (US); Carol Louise Okubo, Dearborn, MI (US); and Russell Michael Charles, Grosse Pointe Woods, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed on Mar. 17, 2023, as Appl. No. 18/123,048.
Prior Publication US 2024/0308498 A1, Sep. 19, 2024
Int. Cl. B60W 20/50 (2016.01); B60K 6/00 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01)
CPC B60W 20/50 (2013.01) [B60K 6/00 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 2510/08 (2013.01); B60W 2710/081 (2013.01); B60W 2710/083 (2013.01); B60W 2720/10 (2013.01); B60Y 2200/92 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a drivetrain including an engine, a traction battery, a motor, and an inverter system controller connected between the traction battery and motor, and including an inverter and variable voltage control circuitry configured to boost an input voltage to the inverter; and
a controller programmed to, responsive to detecting a predefined condition,
turn the inverter off to deactivate the motor and enable the engine for propulsion of the vehicle such that the motor rotates at a speed due to the propulsion, and
command the variable voltage control circuitry to generate a target input voltage for the inverter that is based on a speed limit for the vehicle such that the speed of the motor corresponding to the vehicle travelling does not result in charging current flow to the traction battery.