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Vehicle and battery degradation accumulation methods

A technology of vehicle and attenuation value, applied in the direction of battery/battery traction, battery, electric device, etc.

Active Publication Date: 2015-06-24
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, measuring the remaining life of the battery pack may be helpful in terms of maintenance

Method used

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  • Vehicle and battery degradation accumulation methods
  • Vehicle and battery degradation accumulation methods
  • Vehicle and battery degradation accumulation methods

Examples

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Embodiment Construction

[0015] Embodiments of the disclosure are described herein. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments 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 present invention. As will be understood by those of ordinary skill in the art, various features shown and described with reference to any one figure may be combined with features shown in one or more other figures to produce Examples described. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of the features consistent with the teach...

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Abstract

A vehicle includes a traction battery subject to alternating cycling and storage modes and a controller. The controller is programmed to calculate an accumulated degradation for the traction battery based on a degradation profile for the traction battery. The degradation profile defines degradation accumulated over time and may differ based on the mode and temperature. The initial degradation value includes the accumulated degradation for the present mode and at least a portion of the accumulated degradation for the other mode. Degradation is then accumulated according to the degradation profile starting from the initial degradation value. The amount of accumulated degradation from the other mode that is included may vary based on the mode and the accumulated degradation.

Description

technical field [0001] The present disclosure generally relates to the estimation of decay and service life of batteries. Background technique [0002] Modern hybrid and electric vehicles rely heavily on high-voltage batteries to supply energy to and store energy from the electric motor. Battery pack performance may degrade over time. This reduction in performance can cause irreversible physical and chemical changes in the battery and may be a function of how the battery is handled and stored. These reductions in performance result in the battery having less energy storage capacity and power than it would have had when the battery was new. Degradation of battery performance and loss of power due to aging and handling can affect vehicle performance. [0003] It may be desirable to estimate the remaining amount of useful life of the battery pack. Prediction of the degradation that the battery pack has experienced may allow the controller to modify the battery pack operatin...

Claims

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Application Information

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IPC IPC(8): B60L11/18G01R31/36B60L50/16
CPCH01M10/42H01M10/48H01M10/486H01M2220/20B60L1/003B60L1/06B60L3/12B60L7/14B60L7/26B60L2210/10B60L2210/30B60L2210/40B60L2240/545B60L2240/547B60L2240/549B60L2240/80B60L2260/44B60L2260/50Y02T10/7072Y02T10/70Y02T90/14B60L53/14B60L50/16B60L58/16B60L58/12B60L58/21B60L58/20B60L50/66Y02T10/72Y02E60/10H01M10/488Y02T90/12H01M10/425H01M2010/4271
Inventor 段晓宏
Owner FORD GLOBAL TECH LLC
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