公开(公告)号：US20240079973A1

公开(公告)日：2024-03-07

申请号：US18262446

申请日：2022-02-11

Applicant: UNIVERSITY OF EXETER

Inventor： Zheng Jun CHEW ,  Yang KUANG ,  Tingwen RUAN ,  Meiling ZHU

IPC: H02N2/18

CPC classification number: H02N2/186 ,  H02N2/181

Abstract: An energy harvesting device is described comprising a piezoelectric material element (22), a proof mass (18) moveable relative to the piezoelectric material element (22) and coupled to the piezoelectric material element (22) by a coupling arrangement such that movement of the proof mass (18) causes compression of the piezoelectric material element (22), wherein the proof mass (18) defines a cavity (20), the piezoelectric material element (22) being located, at least in part, within the cavity (20). A power management circuit (50) suitable for use therewith is also described, the circuit (50) comprising a configurable voltage amplification and rectification circuit and a mode control circuit operable to configure the configurable circuit to operate in a voltage amplification mode or in a rectification mode, the mode control circuit selecting the operating mode depending upon the input or output of the configurable circuit.

公开(公告)号：US20240322597A1

公开(公告)日：2024-09-26

申请号：US18262470

申请日：2022-01-21

Applicant: UNIVERSITY OF EXETER

Inventor： Zheng Jun CHEW ,  Yang KUANG ,  Tingwen RUAN ,  Meiling ZHU

IPC: H02J50/00 ,  B61L23/04 ,  H02J50/10

CPC classification number: H02J50/001 ,  B61L23/042 ,  H02J50/10

Abstract: Disclosed is an energy harvesting arrangement for use in the harvesting of magnetic field energy from a source in the form of a rail of a railway network, the energy harvesting arrangement comprising an energy harvester arranged in proximity to the rail or a component electrically connected to the rail, and the energy harvester is electrically connected, via a power management circuit, to an electrical storage device.