US 12,479,313 B2
Runaway prevention systems and methods for electric vehicles
Gabriel Bernatchez, Montreal (CA); and Amin Zabihinejad, Montreal (CA)
Assigned to TAIGA MOTORS INC., Lasalle (CA)
Filed by TAIGA MOTORS INC., Lasalle (CA)
Filed on Apr. 27, 2022, as Appl. No. 17/730,332.
Claims priority of provisional application 63/183,887, filed on May 4, 2021.
Prior Publication US 2022/0355676 A1, Nov. 10, 2022
Int. Cl. B60L 15/20 (2006.01); B60K 28/00 (2006.01); B60W 20/20 (2016.01); B60W 20/40 (2016.01); H02P 3/22 (2006.01)
CPC B60L 15/2009 (2013.01) [B60W 20/20 (2013.01); B60W 20/40 (2013.01); H02P 3/22 (2013.01); B60K 28/00 (2013.01); B60L 2200/00 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60W 2300/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of stopping propulsion of an electric powersport vehicle in an emergency situation, the method comprising:
causing an electric motor of the electric powersport vehicle to propel the electric powersport vehicle;
receiving, via an emergency shutoff switch of the electric powersport vehicle or via a tether switch of the electric powersport vehicle, a command to stop propulsion of the electric powersport vehicle while the electric powersport vehicle is in motion;
in response to the command, attempting to regulate an operation of the electric motor toward a no-load operating state of the electric motor while the electric powersport vehicle is in motion and as a speed of the electric powersport vehicle is decreasing, wherein in the no-load operating state, the electric motor is controlled so that substantially no torque is output from the electric motor or is input into the electric motor operating as a generator; and
when the operation of the electric motor is outside a prescribed range of the no-load operating state after attempting to regulate the operation of the electric motor toward the no-load operating state, causing braking of the electric motor via a power inverter while the electric powersport vehicle is in motion.