Invention Application
- Patent Title: DIFFUSION-LIMITED ADAPTIVE BATTERY CHARGING
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Application No.: US14746665Application Date: 2015-06-22
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Publication No.: US20160087461A1Publication Date: 2016-03-24
- Inventor: Thomas C. Greening , P. Jeffrey Ungar , William C. Athas
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Main IPC: H02J7/00
- IPC: H02J7/00

Abstract:
Some embodiments of the present invention provide a system that adaptively charges a battery, wherein the battery is a lithium-ion battery which includes a transport-limiting electrode governed by diffusion, an electrolyte separator and a non-transport-limiting electrode. During operation, the system determines a lithium surface concentration at an interface between the transport-limiting electrode and the electrolyte separator based on a diffusion time for lithium in the transport-limiting electrode. Next, the system calculates a charging current or a charging voltage for the battery based on the determined lithium surface concentration. Finally, the system applies the charging current or the charging voltage to the battery.
Public/Granted literature
- US10044210B2 Diffusion-limited adaptive battery charging Public/Granted day:2018-08-07
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