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Lithium plating detection and mitigation in electric vehicle batteries

A vehicle and lithium-evolution technology, applied in the field of lithium-evolution detection and mitigation in electric vehicle batteries, can solve problems such as lithium-evolution

Pending Publication Date: 2021-05-25
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these charging strategies may cause lithium precipitation, especially when charging at low temperature

Method used

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  • Lithium plating detection and mitigation in electric vehicle batteries
  • Lithium plating detection and mitigation in electric vehicle batteries
  • Lithium plating detection and mitigation in electric vehicle batteries

Examples

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Embodiment Construction

[0010] As required, detailed embodiments are disclosed herein; however, it should be understood that the disclosed embodiments are merely representative of claimed subject matter and may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the embodiments. As will be understood by those of ordinary skill in the art, various features shown and described with reference to any one of the figures may be combined with features shown in one or more other figures to produce the embodiment. The combinations of features shown provide representative embodiments for typical applications. Various combinations and modifications of the features, however, may be desired...

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Abstract

The invention provides lithium plating detection and mitigation in electric vehicle batteries. A vehicle includes a traction battery and a controller. The controller is programmed to, in response to dynamic resistance and capacity of the traction battery for a drive cycle differing from dynamic resistance and capacity of the traction battery for a previous drive cycle by threshold percentages, controlling the traction battery to reduce lithium plating.

Description

technical field [0001] The present disclosure relates to detecting and mitigating lithium evolution in traction batteries. Background technique [0002] Electrified vehicles, such as hybrid, plug-in hybrid, and battery electric vehicles, use electric machines powered by traction batteries to drive the vehicle drivetrain. For example, charging and discharging of a battery results in electrochemical processes that affect the charge available to power the vehicle and may vary with environmental conditions and operating conditions such as battery state of charge (SOC), temperature, cell balance, and charge / discharge rate or current) changes. In lithium-ion (Li-ion) batteries, metallic lithium may deposit on the anode of the battery cell under some operating conditions, which may affect battery performance. Batteries are particularly susceptible to this process, known as lithium evolution, at low operating temperatures and high charge currents, but lithium evolution can also o...

Claims

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Application Information

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IPC IPC(8): B60L58/12
CPCB60L58/12B60L2240/547B60L2240/549H01M10/052H01M10/425H01M2010/4271H01M10/44H01M10/615H01M2220/20Y02T10/70Y02E60/10B60L3/0046B60L2240/54B60L58/10B60L58/14G06F17/18H01M10/625
Inventor 萨蒂什·B·奇卡南纳瓦尔乔纳森·陶马修·艾伦·托迈克里斯汀·爱德华·谢弗凯文·范德拉恩
Owner FORD GLOBAL TECH LLC
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