Various powered mobility systems, such as scooters and wheeled boards, are disclosed. The powered mobility system can be a drive assembly, which can include a motor, transmission assembly, driving wheel, and power supply. The drive assembly can be detachable from the rest of the personal mobility vehicle.

A roller board has axles provided with castors and secured at the front and rear ends of a board deck such that a steering movement is transferrable to the axles by a person on the board deck by lateral shifting of weight. Steerability and problem-free operation are improved. Substantially rigid booms, one directed to the front and one directed to the rear, are provided at the front and rear ends of the board deck, respectively. A support arm pointing in the direction of the central axis of the board deck is rigidly fastened to each boom. The support arms are pivotable on the two sides about a pivot axis inclined in the direction of travel by 40° to 50° relative to the plane of the board deck. The axle of a single castor is mounted rotatably in or on each hub, with the pivot joint inside the castor.

A roller board has axles provided with castors and secured at the front and rear ends of a board deck such that a steering movement is transferrable to the axles by a person on the board deck by lateral shifting of weight. Steerability and problem-free operation are improved. Substantially rigid booms, one directed to the front and one directed to the rear, are provided at the front and rear ends of the board deck, respectively. A support arm pointing in the direction of the central axis of the board deck is rigidly fastened to each boom. The support arms are pivotable on the two sides about a pivot axis inclined in the direction of travel by 40° to 50° relative to the plane of the board deck. The axle of a single castor is mounted rotatably in or on each hub, with the pivot joint inside the castor.

A self-propelled, one-wheeled vehicle may include a board having two deck portions each having a concave front footpad configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. The concave front footpad has a rider detection sensor in the form of a membrane switch conforming to the shape of the footpad (e.g., facilitated by one or more slots formed in the membrane switch). A motor assembly drives the vehicle in response to board orientation and rider detection information.

A self-propelled, one-wheeled vehicle may include a board having two deck portions each having a concave front footpad configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. The concave front footpad has a rider detection sensor in the form of a membrane switch conforming to the shape of the footpad (e.g., facilitated by one or more slots formed in the membrane switch). A motor assembly drives the vehicle in response to board orientation and rider detection information.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

Various implementations include a wheel hub configured to be used with an electric vehicle. The wheel hub includes a hollow cylindrical body, a direct drive motor, a hollow axle, a battery, and a tire. The hollow cylindrical body includes a first end surface and a second end surface that is axially opposite and spaced apart from the first end surface. The direct drive motor is disposed within the hollow cylindrical body and is configured to rotate the cylindrical body about a central axis of the motor. The hollow axle has a central axis that is coaxial with the motor central axis and is at least partially disposed within the cylindrical body. The battery is disposed within the hollow cylindrical body and is in electrical communication with the direct drive motor. The tire is fixedly coupled and disposed on an external surface of the hollow cylindrical body.