Electrically variable transmission with modular construction

An electrically-variable transmission comprising:

• an input member having an axis of rotation;
• an output member coaxial with the axis of rotation;
• a transmission casing;
• first and second substantially identical motor modules within the transmission casing operatively connecting the input member and the output member and coaxially arranged about the axis of rotation;
• wherein each motor module includes a respective
• motor/generator with a rotor rotatable about the axis of rotation and defining a rotor cavity;
• a planetary gear set packaged within the cavity and having a first, a second, and a third member;
• a rotor hub supporting the rotor and having first and second annular end portions at opposing ends of the rotor hub and an annular midportion connected for common rotation with the first member of the planetary gear set;
• and
• a selectively engagable rotating-type clutch packaged within the cavity and connected with the rotor hub;
• wherein the planetary gear set is packaged axially between the first annular end portion and the annular midportion;
• and wherein the rotating-type clutch is packaged between the midportion and the second annular end portion.

An electrically-variable transmission comprising:

• an input member and an output member;
• a transmission casing;
• first and second substantially identical motor modules packaged within the transmission casing and operatively connected with the input member and the output member;
• wherein each motor module has a respective motor/generator with a rotor supported on a rotor hub that has annular end portions and an annular midportion extending radially-inward therefrom, a respective planetary gear set, a respective rotating-type clutch, a respective first and second stationary support member connected to the transmission casing, and a respective stationary-type clutch selectively grounding a member of the respective planetary gear set to the respective second stationary support member;
• an input brake selectively engagable to connect the input member to the first stationary support member of the first motor module to allow both motor/generators to be operated as motors to provide torque to the output member;
• and
• wherein the motor modules are arranged axially along the transmission axis from the input brake to the output member in order of the first stationary support member of the first motor module, the first annular end portion of the first motor module, the planetary gear set of the first motor module, the annular midportion of the first motor module, the rotating-type clutch of the first motor module, the second annular end portion of the first motor module, the second annular support of the first motor module, the stationary-type clutch of the first motor module, the first stationary support member of the second motor module, the first annular end portion of the second motor module, the planetary gear set of the second motor module, the annular midportion of the second motor module, the rotating-type clutch of the second motor module, the second annular end portion of the second motor module, the second annular support of the second motor module, and the stationary-type clutch of the second motor module.