Indigo Technologies, Inc.

Scott T Purchase

Ian W Hunter

Timothy A Fofonoff

Dean Ljubicic

Thomas Moriarty

Peter G Madden

Peter Madden

Rachel A Dias Carlson

An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.

Multi-bar linkage electric drive system

Conventional axial flux motors typically include multiple rotors and stators resulting in a larger and heavier motor. Additionally, conventional axial flux motors include a housing to protect the rotors and stators, but the housing is often difficult to seal from the environment leading to risks of contaminants (e.g., dirt, water) infiltrating the motor and causing failure over time. The present invention overcomes these limitations by disclosing an axial flux motor with a single rotor and two stators. The use of a single rotor reduces the size and weight of the motor. An inboard housing and an outboard housing mechanically support the two stators and are joined together to define an interior cavity. A ring seal is disposed between the two housings to ensure the interior cavity is sealed. Additionally, the two stators may actuate multiple degrees of freedom (DOF) including the rotation of a wheel and actuation of a suspension.

Sealed axial flux motor with integrated cooling

An electric motor including: a first and second subsystems, one of which is a magnetic rotor assembly and the other of which is a coil stator assembly; a hub assembly supporting the magnetic rotor assembly and the coil stator assembly and defining an axis of rotation; and a bearing assembly supporting at least one of the first and second subsystems on the hub assembly, wherein the first subsystem has an array of lift-generating elements for generating axially directed magnetic fields, the second subsystem has an electrically conductive region aligned with and opposite to the array of lift-generating elements of the first subsystem, and wherein the bearing assembly enables the magnetic rotor assembly to rotate about the rotational axis of the hub assembly and enables the separation distance of the magnetic rotor assembly from the coil stator assembly to change.

Permanent magnet motor with passively controlled variable rotor/stator alignment

A magnetic rotor including: a support structure with a rotational axis, with a front side having a first annular region encircling the rotational axis, and with a back side having a second annular region encircling the rotational axis, the support structure having a first array of pockets formed in the front side within the first annular region and encircling the rotational axis, and a second array of pockets formed in the back side within the second annular region and encircling the rotational axis, and wherein the pockets of the first array of pockets are interleaved with the pockets of the second array of pockets; a first plurality of magnets contained within the pockets of the first array of pockets on the first side of the support structure; and a second plurality of magnets contained within the pockets of the second array of pockets on the second side of the support structure, wherein the pockets of the first and second arrays of pockets have obstructions against which the magnets contained within the pockets rest.

Magnetic rotor assembly

An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a mechanical guide system supporting the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis; and a multi-bar linkage mechanism connecting to each of the first and third rotating assemblies and connecting the hub assembly to the mechanical guide system, wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and third rotating assembly with respect to each other.

Guided multi-bar linkage electric drive system

An electric motor including: a hub assembly defining a rotational axis; a magnetic rotor assembly; a first coil stator assembly; a second coil stator assembly; and a system of rotor bearings rotatably supporting each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly on the hub assembly so that each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly are rotatable about the rotational axis independently of each other.

Growing community of inventors

Cambridge, MA, United States of America

Scott T Purchase