Invention Grant
- Patent Title: Methods for fast-charging and detecting lithium plating in lithium ion batteries
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Application No.: US15664704Application Date: 2017-07-31
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Publication No.: US10700376B2Publication Date: 2020-06-30
- Inventor: Brian J. Koch
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: H01M10/0525
- IPC: H01M10/0525 ; B60L53/00 ; B60L58/10 ; H01M10/48 ; H02J7/00 ; H01M10/44 ; H01M10/052 ; H01M10/42

Abstract:
Methods for fast-charging batteries while minimizing lithium plating (LP) comprise charging the battery in a first phase at a near-maximum charging current, subsequently charging the battery in a second phase by decreasing the charging current while charging in order to maintain the anode potential equal to or above an anode potential threshold, and subsequently charging the battery in a third phase at constant cell potential such that the cathode potential remains below a cathode potential threshold. LP can be detected by determining the derivative of the charging current and examining the derivative for smooth curves or local discontinuities, wherein a smooth curve indicates the absence of LP and a curve with a local discontinuity indicates the presence of LP. A fast-charging profile can be defined by plotting the cell potential vs. the charging current from the first phase, the second phase, and the third phase to define a fast-charging profile.
Public/Granted literature
- US20190031035A1 METHODS FOR FAST-CHARGING AND DETECTING LITHIUM PLATING IN LITHIUM ION BATTERIES Public/Granted day:2019-01-31
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