Battery state estimation system and method using nonlinear resistive elements

A technology of nonlinear components and battery systems, applied in the direction of electrical components, alkaline storage batteries, batteries, etc., can solve the problems of inability to use the propulsion system, acceleration, etc., and achieve the effect of large battery weight and/or cost flexibility

Active Publication Date: 2020-04-28
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Slight over-forecasting of power capacity may result in failed attempts to accelerate a crankshaft engine or unstable vehicle, while similarly under-estimation of power capacity may temporarily disable the propulsion system

Method used

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  • Battery state estimation system and method using nonlinear resistive elements
  • Battery state estimation system and method using nonlinear resistive elements
  • Battery state estimation system and method using nonlinear resistive elements

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Embodiment Construction

[0022] Specific descriptions of systems and methods according to embodiments of the present invention are provided below. Although only a few embodiments have been described, it should be understood that the present invention is not limited to any one embodiment, but encompasses numerous alternatives, modifications, and equivalents. Furthermore, while the following description sets forth numerous specific details to provide a thorough understanding of the embodiments disclosed herein, some embodiments may also be practiced without some or all of these details. Furthermore, for the purpose of clarity, certain technical material that is known in the art has not been described in detail so as not to unnecessarily obscure the present invention.

[0023] Embodiments of the present invention will be best understood with reference to the accompanying drawings, wherein like parts may be designated by like reference numerals. The components of the disclosed embodiments, which are gene...

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Abstract

Systems and methods are disclosed for estimating states of a battery system, such as a current-limited state of power and / or a voltage-limited state of power, using a battery system model incorporating a non-linear resistive element. The parameters of the elements included in the cell model associated with the non-linear resistance of the cell can be directly parameterized and used in conjunction with the state estimation method. By accounting for non-linear effects, embodiments of the disclosed systems and methods may increase available battery power utilized in conjunction with battery system control and / or management decisions under more operating conditions.

Description

technical field [0001] The present disclosure relates to systems and methods for estimating battery system states. More specifically, but not exclusively, the systems and methods disclosed herein relate to estimating the state of a battery system using a battery system model incorporating non-linear resistive elements. Background technique [0002] Passenger cars typically include batteries for the operating features of the vehicle's electrical and powertrain systems. For example, vehicles typically include a 12V lead-acid automotive battery configured to provide electrical power to the vehicle's starter system (eg, starter motor), lighting system, and / or ignition system. In electric, fuel cell ("FC") and / or hybrid vehicles, high voltage ("HV") battery systems (eg, 360V high voltage battery systems) may be used to power the vehicle's electric powertrain components (eg, electric drive motors, etc.) ) to provide power. For example, a high voltage rechargeable energy storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/367G01R31/3842G01R31/388B60L58/12B60L58/10B60R16/033
CPCG01R31/387G01R31/3842B60L58/10B60R16/033G01R31/3648H01M10/482H01M10/0525H01M10/06H01M10/30H01M10/425H01M12/06H01M2010/4271H01M2010/4278H01M2220/20G01R31/388G01R31/367Y02E60/10Y02T10/70
Inventor C·W·温普勒M·W·维尔布鲁格B·J·科赫P·M·拉斯科夫斯基
Owner GM GLOBAL TECH OPERATIONS LLC
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