公开(公告)号：US20220158527A1

公开(公告)日：2022-05-19

申请号：US17600838

申请日：2020-04-01

Applicant: UNIVERSITY OF EXETER

Inventor： Meiling ZHU ,  Yang KUANG

IPC: H02K7/18

Abstract: An electrical generation apparatus is described comprising a magnetic mass (18) magnetically attracted to a guide member (14) such that the mass (18) is moveable, in use, along a path defined by the shape of the outer periphery of the guide member (14), the mass (18) being moveable past a coil (20), and at least one repulsion magnet (16a, 16b) of the same polarity as the mass (18) and positioned to repel the mass (18) such that the mass (18) undertakes a pendulum-like reciprocating motion, repeatedly passing the coil.

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.