Apple Inc.

David M Demuro

Richard Hung Minh Dinh

Daniel William Jarvis

Richard M Mank

Cyril De La Cropte De Chanterac

Hongli Dai

Meng Chi Lee

Michael Eng

Vijayasekaran Boovaragavan

Alessandro Pelosi

Nicholas W Ruhter

Stephen D Sterz

Rishabh Bhargava

Karen Eckert

Julian Malinski

Julien Marcil

Steven D Sterz

John Meron Ananny

Karthik Kadirvel

Soundararajan Manthiri

Ankur Gupta

Hua Chen

Soundarajan Manthiri

Christopher C Branson

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

A method of an electronic device that includes a power source is disclosed. The method determines a health of the power source, a temperature of the power source, and a state of charge of the power source. The method then sets a performance state cap for the electronic device based on at least the health of the power source.

Battery health-based power management

A method is disclosed. The method can include receiving a command to shut down an electronic device based on a measurement of power delivery to the electronic device. After receiving the command to shut down, the method can determine whether an indication of remaining power capacity at the electronic device exceeds a threshold value. The method can shut down the electronic device and, after shutting down the electronic device, in accordance with a determination that the indication of remaining power capacity exceeds the threshold value, automatically reboot the electronic device. In accordance with a determination that the indication of the remaining power capacity does not exceed the threshold value, automatically rebooting the electronic device can be foregone.

Systems and methods for power management at device shutdown

Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.

Dynamic battery cell impedance monitoring

Growing community of inventors

San Jose, CA, United States of America

David M Demuro