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Low charge acceptance mitigation using traction battery

A traction battery and acceptance technology, applied in battery/fuel cell control devices, batteries, secondary batteries, etc., can solve problems such as low charging acceptance and fossil fuel consumption

Active Publication Date: 2018-05-22
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, low charge acceptance can lead to unnecessary consumption of fossil fuels

Method used

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  • Low charge acceptance mitigation using traction battery
  • Low charge acceptance mitigation using traction battery
  • Low charge acceptance mitigation using traction battery

Examples

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Embodiment Construction

[0021] Embodiments of the disclosure are described herein. However, it should be understood that the disclosed embodiments are merely examples and that other embodiments may take 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 persons 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 Example. The combinations of features shown provide representative embodiments for typical applications. Various combinations and modifications of the features consistent with the teachings of this disclosure, how...

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Abstract

The invention relates to low charge acceptance mitigation using a traction battery. A controller may include input channels configured to receive charge acceptance values of an auxiliary battery and astate of charge (SOC) of the traction battery. The controller may also include output channels configured to provide threshold signals to set a voltage threshold of an auxiliary bus coupled with theauxiliary battery and deriving power from the traction battery. The controller may include control logic configured to generate the threshold signals such that during a next charging event, a voltageof the auxiliary battery achieves a desulfation value. The controller logic may generate the threshold signals in response to the acceptance falling below a predetermined sulfation value and the SOC being above an SOC threshold.

Description

technical field [0001] The present disclosure relates to mitigation of low charge acceptance with traction batteries. Background technique [0002] Charge acceptance is the ratio of the charge a battery receives over time to the charge the battery holds. Charge acceptance is synonymous with battery charge efficiency. Low charge acceptance can significantly reduce the fuel economy of hybrid and electric vehicles because more energy is required to maintain the battery state of charge (SOC). Batteries with low charge acceptance may also take longer to charge. Therefore, low charge acceptance can lead to unnecessary fossil fuel consumption. Contents of the invention [0003] A controller may include an input channel configured to receive a charge acceptance value (CAV) of an auxiliary battery and a state of charge (SOC) of a traction battery. The controller also includes an output channel configured to provide a threshold signal to set a voltage threshold of an auxiliary b...

Claims

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Application Information

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IPC IPC(8): B60R16/033
CPCB60R16/033H01M2220/00H01M16/00B60L58/13B60L58/21H01M10/425Y10S903/907H01M2220/20H01M2010/4271Y02T10/70Y02E60/10
Inventor 大卫·安东尼·赛曼尼
Owner FORD GLOBAL TECH LLC