US 2015/0084482 A1 · POWER GENERATION DEVICE

Abstract

A device able to generate electrical power through relative rotational motion of first (370, 380) and second (200, 230) principal components around an axis of rotation (220); wherein: the first and second principal components comprise an arrangement of piezoelectric elements (380) and permanent magnets (230, 370) such that the interaction between these magnets and piezoelectric elements, in use, makes it possible to generate electricity; and wherein: the second principal component (200, 230) comprises a centre of mass offset from the axis of relative rotation (220) such that the response of the second principal component (200, 230) to either gravitational or inertial forces is a relative rotation of the second principal component (200, 230) in relation to the first principal component (370, 380); the first principal component (370, 380) being fixedly attached to the moving host structure (100).

Claims20

Dependent claims

A device for generating electricity by acceleration of and/or changes in orientation of the device, the device comprising first and second principle components, wherein:

the first principle component is mounted relative to the housing for resilient deformation and to generate electricity when so deformed;
the second principle component is rotationally mounted relative to the housing for rotation relative to the housing and the first component, the center of mass of the second component being offset from its axis of rotation;
and
the two components are arranged to interact with each other during at least part of the rotational path of the second component to deform the first component and thereby generate electricity.

1 more element

A device operable to generate electrical energy by means of first and second principal components, the device being able to generate electrical power through relative rotational motion around a rotational axis of the first and second principal component, wherein:

the first principal component is fixedly attached to a body of the device;
the second principal component is rotatable in relation to the first principal component in use;
and
the center of mass of the second principal component is offset with respect to the axis of relative rotation such that the action of either inertia or gravity or a combination thereof on the second principal component creates relative rotational motion between the first and second principal component.

1 more element

Dependencies are inferred from the claim text.

Power generation device

Life of this patent

Power generation device

Life of this patent

Abstract

Claims20