Patent ID: 9130161
Filing Date: 2015-09-08
Classification: H01L,H02N

Abstract:
1. A mechanical energy harvesting apparatus comprising: a mechanical assembly comprising a moving mass configured to move due to an action of an external source of energy; and a cantilever magnetostrictive energy harvester mechanically coupled to the moving mass, wherein the moving mass is fixed at a free end of the magnetostrictive energy harvester, the magnetostrictive energy harvester comprising: wherein movement of the moving mass, which is directly attached to the at least two magnetostrictive elements, induces force or strain on the magnetostrictive material to change a magnetic property of the magnetostrictive material, wherein the change of the magnetic property of the magnetostrictive material results in a change in magnetic flux within the substantially closed magnetic circuit, and induces electrical energy in the plurality of electrically conductive coils; and wherein the substantially closed magnetic circuit comprises a continuous physical loop along the at least two magnetostrictive elements and between corresponding ends of the at least two magnetostrictive elements.