Drive systems including transmissions and magnetic coupling devices for electric and hybrid electric vehicles

A vehicle drive system including a transmission having a plurality of operating modes, the system comprising:

• a transmission output shaft;
• a stationary member;
• a first electric powerplant having a first rotary drive shaft connecting with the transmission output shaft;
• a second electric powerplant having a second rotary drive shaft connecting with the transmission output shaft;
• a group of gears including first and second elements connecting with the transmission output shaft;
• a first non-friction controllable coupling assembly having a coupling state for coupling the first electric powerplant to the transmission output shaft and an uncoupling state for uncoupling the transmission output shaft from the electric powerplant, the first coupling assembly being non-hydraulically controlled to change state;
• a second non-friction controllable coupling assembly having a first coupling state for coupling the first element to the transmission output shaft, a second coupling state for coupling the second element to the transmission output shaft and an uncoupling state for uncoupling the transmission output shaft from the first and second elements, the second coupling assembly being non-hydraulically controlled to change state;
• and
• a magnetic coupling device to magnetically transfer a portion of rotating mechanical energy of the second electric powerplant to the transmission output shaft in response to an electrical signal to synchronize angular velocities of the transmission output shaft and the second rotary drive shaft during a change in state of the second coupling assembly.

A vehicle drive system including a transmission having a plurality of operating modes, the system comprising:

• a transmission output shaft;
• a stationary member;
• a first electric powerplant having a first rotary drive shaft connecting with the transmission output shaft;
• a second electric powerplant having a second rotary drive shaft connecting with the transmission output shaft;
• a group of gears including first and second elements connecting with the transmission output shaft;
• a first non-friction controllable coupling assembly having a coupling state for coupling the first electric powerplant to the transmission output shaft and an uncoupling state for uncoupling the transmission output shaft from the first electric powerplant, the first coupling assembly being non-hydraulically controlled to change state;
• a second non-friction controllable coupling assembly having a first coupling state for coupling the first element to the transmission output shaft, a second coupling state for coupling the second element to the transmission output shaft and an uncoupling state for uncoupling the transmission output shaft from the first and second elements, the second coupling assembly being non-hydraulically controlled to change state;
• a non-electric powerplant having an output shaft connecting with the transmission output shaft;
• a third non-friction, controllable coupling assembly having a first coupling state coupling the non-electric powerplant to the transmission output shaft and an uncoupling state for uncoupling the non-electric powerplant from the transmission output shaft, the third coupling assembly being non-hydraulically controlled to change state;
• a magnetic coupling device to magnetically transfer a portion of rotating mechanical energy of the second electric powerplant to the transmission output shaft in response to an electrical signal to synchronize angular velocities of the second rotary drive shaft and the transmission output shaft during a change in state of the second coupling assembly.