Solid State Spin Sensor for Battery Inspection
OwnerDavid Glenn, Cole Meisenhelderinventors
Life of this patent
Estimating the term…
Abstract
A solid-state spin sensor system for battery inspection is disclosed for detecting magnetic fields generated by currents within a battery. The system comprises a solid-state substrate, typically diamond, embedded with an ensemble of color centers such as a nitrogen-vacancy centers. It includes a magnetic field generator to provide a bias magnetic field, an optical driving system to optically excite the defect, and an optical sensor to measure the fluorescence intensity. The control system controls the current flowing between the battery terminals and generates a spatially resolved map of the magnetic field produced by this current, allowing for the identification of defects.
Claims20
A system for detecting defects in a battery comprising:
- a test circuit configured to control a current passing between the cathode and anode of a battery;
- a solid state substrate;
- a defect embedded in the solid state substrate;
- a magnetic field generator configured to produce a bias magnetic field at the defect;
- an optical driving system configured to optically excite the defect;
- an optical sensor configured to measure a fluorescence intensity of the defect;
- and
- a control system configured to:
- receive signals from the optical sensor indicative of the fluorescence intensity,
- generate, based on the received signals, a spatially resolved map of a magnetic field produced by the current, and
- identify, based on characteristics of the spatially resolved map, defects in the battery.
A method for detecting defects in a battery using a quantum sensor, comprising:
- controlling a current between a cathode and an anode of the battery using a test circuit;
- generating a bias magnetic field at a defect embedded in a solid state substrate using a magnetic field generator;
- optically exciting the defect with an optical driving system;
- measuring a fluorescence intensity of the defect with an optical sensor;
- receiving signals from the optical sensor indicative of the fluorescence intensity;
- generating, based on the received signals, a spatially resolved map of a magnetic field produced by the current;
- and
- identifying defects in the battery based on characteristics of the spatially resolved map.
A method for evaluating structural integrity of a battery using a quantum sensor, comprising:
- mounting the battery on a actuator with one or more axes;
- positioning a surface of the battery proximate to a defect embedded in a solid state substrate;
- controlling a current between a cathode and an anode of the battery using a test circuit;
- generating a bias magnetic field at the defect using a magnetic field generator;
- optically exciting the defect by illuminating the defect with light from an optical driving system;
- measuring a fluorescence intensity of the defect using an optical sensor;
- generating a spatially resolved map of a magnetic field produced by the current;
- and
- analyzing the spatially resolved map to identify defects in the battery.
Dependencies are inferred from the claim text.