PROPULSION WHEEL MOTOR FOR AN ELECTRIC VEHICLE

• Main Authors: HERRERA EDUARDO, WINN ROSS BRIANT, LEE CHUNHAO J, WEBER STEVEN J, ROGERS JAMES JONATHAN, GUO RAYMOND, EGGLESTON, IV RAYMOND EDWARD, FIGUERED JOSHUA M, FARRELL LOGAN CHRISTOPHER, WALIGORA THOMAS M, BLUETHMANN WILLIAM J, VITALE ROBERT L, JUNKIN LUCIEN Q
• Format: Patent
• Language: English
• Published: 23.04.2015
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; AXLES FOR WHEELS OR CASTORS; CASTORS; INCREASING WHEEL ADHESION; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLE WHEELS; VEHICLES IN GENERAL

A wheel assembly for an electric vehicle includes a wheel rim that is concentrically disposed about a central axis. A propulsion-braking module is disposed within an interior region of the wheel rim. The propulsion-braking module rotatably supports the wheel rim for rotation about the central axis. The propulsion-braking module includes a liquid cooled electric motor having a rotor rotatable about the central axis, and a stator disposed radially inside the rotor relative to the central axis. A motor-wheel interface hub is fixedly attached to the wheel rim, and is directly attached to the rotor for rotation with the rotor. The motor-wheel interface hub directly transmits torque from the electric motor to the wheel rim at a 1:1 ratio. The propulsion-braking module includes a drum brake system having an electric motor that rotates a cam device, which actuates the brake shoes.