Invention Grant
- Patent Title: Diffusion-limited adaptive battery charging
- Patent Title (中): 扩散限制自适应电池充电
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Application No.: US14202918Application Date: 2014-03-10
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Publication No.: US09071071B2Publication Date: 2015-06-30
- 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
- Agency: Park, Vaughan, Fleming & Dowler LLP
- Agent A. Richard Park
- Main IPC: H02J7/00
- IPC: H02J7/00 ; G01P3/56 ; G01P15/00 ; H01M10/0525 ; H01M10/44 ; H01M10/48 ; H01M2/00

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
- US20140197805A1 DIFFUSION-LIMITED ADAPTIVE BATTERY CHARGING Public/Granted day:2014-07-17
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