Electrochemical device monitoring
AssigneeUniversity of Newcastle Upon Tyne
InventorsMohamed MAMLOUK, Keith SCOTT
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Abstract
A system is disclosed, the system comprising: an electrochemical device generating a magnetic field; and a sensing device comprising: a magneto-optical medium; an electromagnetic radiation source configured to emit polarized electromagnetic radiation through the magneto-optical medium; and a sensor configured to receive polarized electromagnetic radiation which has passed through the magneto-optical medium. The sensing device is arranged relative to the electrochemical device such that the magnetic field of the electrochemical device passes through the magneto-optical medium.
Claims31
A system comprising:
- an electrochemical device generating a magnetic field;
- and
- a sensing device comprising:
- a magneto-optical medium;
- an electromagnetic radiation source configured to emit polarized electromagnetic radiation through the magneto-optical medium;
- and
- a sensor configured to receive polarized electromagnetic radiation which has passed through the magneto-optical medium;
- wherein the sensing device is arranged relative to the electrochemical device such that the magnetic field of the electrochemical device passes through the magneto-optical medium.
The system as claimed in any preceding claim, wherein the magneto-optical medium is integral with the electromagnetic radiation source;
- or
- wherein the magneto-optical medium is a layer coupled to the electrochemical device.
The system as claimed in any preceding claim, wherein the magneto-optical medium comprises thin film magneto-optical crystals.
The system as claimed in any proceeding claim, wherein the magneto-optical crystals have a high Verdet constant or low optical adsorption;
- or
- wherein the magneto-optical crystals comprise at least one of barium hexaferrites, terbium gallium garnet, bismuth doped rare earth iron garnet, Na2Ce(MoO4)2 or CeAlO3.
The system as claimed in any preceding claim, wherein the electrochemical device generating a magnetic field is a battery comprising a plurality of cells;
- wherein the system comprises a plurality of electromagnetic radiation sources, each associated with one of the plurality of cells;
- and
- wherein the system further comprises a plurality of magneto-optical mediums, each associated with one of the plurality of cells.
The system as claimed in any preceding claim, wherein the system comprises a control module configured to:
- determine a first polarization plane of the emitted electromagnetic radiation, or store a predetermined polarization plane of the emitted electromagnetic radiation;
- determine a second polarization plane of the electromagnetic radiation which has passed through the magneto-optical medium;
- determine an angle of rotation between the first and second polarization planes;
- determine a magnetic field strength of the electrochemical device based on the determined angle of rotation;
- and
- determine the current distribution of the electrochemical device based on the determined magnetic field.
A method of sensing comprising:
- providing the system of any preceding claim;
- emitting, from the electromagnetic radiation source, a polarized electromagnetic radiation through the magneto-optical medium;
- receiving, with the sensor, the polarized electromagnetic radiation which has passed through the magneto-optical medium.
A sensing device comprising:
- a magneto-optical medium;
- an electromagnetic radiation source configured to emit polarized electromagnetic radiation through the magneto-optical medium;
- and
- a sensor configured to receive polarized electromagnetic radiation reflected from the electromagnetic radiation source through the magneto-optical medium,
- wherein the electromagnetic radiation source comprises a first plurality of fibre optic cables, or wherein the sensor comprises a second plurality of fibre optic cables.
A sensing device comprising:
- an electromagnetic radiation source comprising a first plurality of fibre optic cables for emitting polarized electromagnetic radiation;
- and
- a sensor configured to receive polarized electromagnetic radiation, wherein the sensor comprises the magneto-optical medium such that the polarized electromagnetic radiation from the electromagnetic radiation source passes through magneto-optical medium.
Dependencies are inferred from the claim text.