US 12,065,100 B2
Motor/controller authentication system
Subodh Vikram Shukla, Greater Noida (IN); and Saurabh Sona, Greater Noida (IN)
Assigned to STMicroelectronics International N.V., Geneva (CH)
Filed by STMicroelectronics International N.V., Geneva (CH)
Filed on Jul. 23, 2021, as Appl. No. 17/383,547.
Prior Publication US 2023/0022608 A1, Jan. 26, 2023
Int. Cl. B60R 25/04 (2013.01); G06F 21/44 (2013.01); G06F 21/60 (2013.01); H02P 27/06 (2006.01); H03K 17/94 (2006.01); H04B 10/80 (2013.01)
CPC B60R 25/04 (2013.01) [G06F 21/44 (2013.01); G06F 21/602 (2013.01); H02P 27/06 (2013.01); H04B 10/802 (2013.01); H03K 17/943 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An electric motor drive system, comprising:
at least one power phase line;
an external controller, the external controller comprising:
a source of DC electric power;
a microcontroller; and
an inverter configured to convert the DC electric power to a drive signal and provide the drive signal to the at least one power phase line, under control of the microcontroller; and
an electric motor unit, the electric motor unit comprising:
an electric motor;
a microcontroller configured for communication with the microcontroller of the external controller; and
at least one switch coupled between the at least one power phase line and the electric motor, the at least one switch being under control of the microcontroller of the electric motor unit;
wherein the microcontroller of the external controller and the microcontroller of the electric motor unit are configured to perform an authentication process therebetween; and
wherein the microcontroller of the external controller is configured to instruct the microcontroller of the electric motor unit to cause the at least one switch to electrically couple the at least one power phase line to the electric motor in response to success of the authentication process.