Apple Inc.

David M DeMuro

Richard Hung Minh Dinh

Daniel William Jarvis

Richard M Mank

Hongli Dai

Meng Chi Lee

Vijayasekaran Boovaragavan

Soundararajan Manthiri

Rishabh Bhargava

Steven D Sterz

Julian Malinski

Julien Marcil

Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.

Methods for determining and controlling battery expansion

Growing community of inventors

Cupertino, CA, United States of America

David M DeMuro