Apparatus and method for detection of deformation in battery cells

Control circuitry configured for inclusion in a deformation detection apparatus for a battery cell, the control circuitry being communicatively configured to control movement of the battery cell, wherein the control circuitry is configured to:

• obtain a specification for the battery cell, wherein the specification indicates, at least, an initial outer diameter value, a first position, and a second position;
• control displacement of the battery cell along one or more axes for a particular number of movement cycles, wherein the displacement is controlled between the first position and the second position;
• receive, based on the displacement, a plurality of outer diameter values of the battery cell for a plurality of positions;
• and
• determine, for individual charge states, a plurality of strain values for the plurality of positions, the determination being based on the initial outer diameter value and the outer diameter values.

Control circuitry configured for inclusion a deformation detection apparatus for a battery cell, the control circuitry being communicatively configured to control movement of the battery cell, wherein the control circuitry is configured to:

• obtain a specification for the battery cell, wherein the specification indicates, at least, an initial outer diameter value, a first position, and a second position;
• control displacement of the battery cell along one or more axes for a particular number of movement cycles, wherein the displacement is controlled between the first position and the second position;
• receive, based on the displacement, a plurality of outer diameter values of the battery cell for a plurality of positions;
• and
• determine, for individual charge states, a change in a geometrical shape of the battery cell for the plurality of positions, the determination being based on the initial outer diameter value and the outer diameter values.

A method of detecting deformation of a battery cell, the method being implemented by control circuitry of a deformation detection apparatus and comprising:

• obtaining a specification for the battery cell, wherein the specification indicates, at least, an initial outer diameter value, a first position, and a second position;
• displacing the battery cell along one or more axes for a particular number of movement cycles, wherein the displacement is controlled between the first position and the second position;
• receiving, based on the displacement, a plurality of outer diameter values of the battery cell for a plurality of positions, and the outer diameter values being measured via a digital micrometer;
• and
• determining, for individual charge states, a change in a geometrical shape of the battery cell for the plurality of positions, the determination being based on the initial outer diameter value and the outer diameter values.