Battery fault tolerant architecture for cell failure modes parallel bypass circuit

一种蓄电池、蓄电池模块的技术，应用在电路装置、电池并联转换、电池电路装置等方向，能够解决车辆关闭等问题

Active Publication Date: 2012-05-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since battery cells may be electrically coupled in series, failure of one cell in the series may prevent use of the other cells in the series and may result in a vehicle shutdown

Method used

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  • Battery fault tolerant architecture for cell failure modes parallel bypass circuit
  • Battery fault tolerant architecture for cell failure modes parallel bypass circuit
  • Battery fault tolerant architecture for cell failure modes parallel bypass circuit

Examples

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Embodiment Construction

[0032] The following illustrations of embodiments of the invention that relate to the removal of bypass circuits for units or modules connected in parallel with other units or modules are merely exemplary in nature and are in no way intended to limit the invention or its application or use.

[0033] figure 1 is a block diagram of a vehicle system 10 including a high-voltage battery 12 . The high voltage battery 12 includes a plurality of battery modules 14, each including a plurality of battery cells electrically coupled in series. In one non-limiting example, battery 12 may include 8 modules 14, where each module 14 may include 12 cells, for a total of 96 cells. The total voltage can be in the range of 350-400 volts. Battery 12 is electrically coupled to a high voltage bus represented by lines 16 and 18 . In this non-limiting design, vehicle system 10 is part of a hybrid vehicle that includes a primary power source 20 (eg, internal combustion engine, fuel cell system, etc....

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PUM

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Abstract

A by-pass circuit for a battery system that disconnects parallel connected cells or modules from a battery circuit or controls the current through the parallel connected cells or modules. If a cell has failed or is potentially failing in the system, then the by-pass circuit can disconnect the cell or module from other cells or modules electrically coupled in parallel. If a cell or module has a lower capability than another cell or module, then the by-pass circuit can control the current to the cell or module to maximize the performance of the system and prevent the system from creating a walk-home condition.

Description

technical field [0001] The present invention relates generally to controllable bypass circuits for parallel connection of battery modules or cells, and more particularly to control circuits capable of bypassing connected battery cells or modules of a portion of a larger battery system and controlling discharge and charge currents . Background technique [0002] Electric vehicles are becoming increasingly popular. These vehicles include hybrid vehicles (eg, extended-range electric vehicles (EREVs)) and pure electric vehicles (eg, battery electric vehicles (BEVs)) that combine batteries with a primary power source (eg, internal combustion engines, fuel cell systems, etc.). All of these types of electric vehicles employ high voltage batteries comprising multiple battery cells. These batteries may be of different battery types such as lithium ion, nickel metal hydride, lead acid, etc. A typical high voltage battery system for an electric vehicle may include a large number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0024Y02T10/7011Y02T10/7055B60L11/1855Y02T10/705B60L11/1879Y02T10/7005H02J7/0026B60L58/19B60L50/64Y02T10/70H02J7/0029
Inventor S.J.万斯J.T.格林A.H.罗伊托伊泽尔J.C.门策尔
Owner GM GLOBAL TECH OPERATIONS LLC
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