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Methods and systems for adjusting battery voltage limits

A voltage limit, storage battery technology, applied to battery circuit devices, multiple synchronous battery arrangements, battery/fuel cell control devices, etc., can solve problems such as not using voltage changes

Active Publication Date: 2015-02-11
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, these voltage limits typically do not utilize information about voltage variations from cell to cell or junction to junction

Method used

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  • Methods and systems for adjusting battery voltage limits
  • Methods and systems for adjusting battery voltage limits
  • Methods and systems for adjusting battery voltage limits

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Embodiment Construction

[0062] A detailed description of systems and methods according to various embodiments of the invention is provided below. While several embodiments have been described, it should be understood that the invention is not limited to any one specific embodiment disclosed herein, but encompasses numerous alternatives, modifications and equivalents. Furthermore, although numerous specific details are set forth in the following description in order to provide a thorough understanding of the embodiments disclosed herein, some embodiments can be practiced without some or all of these details. Also, for the purpose of clarity, certain technical material that is known in the related art has not been described in detail so as not to unnecessarily obscure the present invention.

[0063] Embodiments of the present invention will be best understood by reference to the drawings, wherein like parts are designated by like numerals. The components of the disclosed embodiments, as generally desc...

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Abstract

Methods and systems for adjusting the voltage limits of a battery. In some implementations, voltage data may be received from each of a plurality of battery sections of a vehicle battery. A voltage offset for the vehicle battery may be calculated using the voltage data. The voltage offset may be calculated by determining a difference between an average voltage taken from each of the plurality of battery sections and at least one of a minimum voltage of all of the battery cells and an average cell voltage from a battery section having the lowest average cell voltage. The voltage offset may be applied to dynamically adjust a voltage limit associated with the vehicle battery so as to prevent any of the battery cells in the vehicle battery from exceeding the voltage limit.

Description

technical field [0001] The invention relates to a method and a system for adjusting the voltage limit of a battery, such as a vehicle battery. For example, in some embodiments and implementations, the present invention relates to methods and systems for dynamically adjusting one or more voltage limits of a high voltage electric vehicle battery. Background technique [0002] Passenger cars often include batteries that operate the vehicle's electrical system and drivetrain. For example, vehicles typically include a 12V lead-acid vehicle battery configured to supply electrical power to a vehicle 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 may be used to provide electrical power to the vehicle's electric drive components (eg, electric motors, etc.). [0003] In some designs, a battery system included in a vehicle may include one or more sections. For exa...

Claims

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Application Information

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IPC IPC(8): H01M10/42B60L11/18
CPCH02J7/00H01M10/42H01M2010/4271B60L3/12B60L2240/547B60L58/22G01N27/416H02J7/0014H02J2310/48Y02E60/10Y02T10/70Y02T10/92Y02T10/7072Y02T10/72H02J7/04H02J7/14H02J9/00
Inventor K.M.约翰逊R.C.巴拉苏Z.D.拜尔斯马A.麦卡利斯特G.罗比森
Owner GM GLOBAL TECH OPERATIONS LLC