公开(公告)号：US20180159183A1

公开(公告)日：2018-06-07

申请号：US15880371

申请日：2018-01-25

Applicant: Apple Inc.

Inventor： Daniel W. Jarvis ,  David M. DeMuro ,  Hongli Dai ,  Julian Malinski ,  Julien Marcil ,  Meng Chi Lee ,  Richard Hung Minh Dinh ,  Rishabh Bhargava ,  Steven D. Sterz ,  Richard M. Mank ,  Soundarajan Manthiri ,  Vijayasekaran Boovaragavan

IPC: H01M10/42 ,  H01M10/48 ,  G01R31/36 ,  H01M10/44

CPC classification number: H01M10/4257 ,  G01R31/382 ,  H01M10/44 ,  H01M10/445 ,  H01M10/48 ,  H01M2010/4271 ,  H01M2220/30

Abstract: 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.