Detection diagnostics for loss of communication with multiple battery cell sense boards

A technology of battery cells and sensing boards, which is applied to batteries, secondary batteries, electrical components, etc., and can solve problems such as loss of communication

Inactive Publication Date: 2018-02-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the CSBs are arranged in a series chain, if one of the CSBs fails, it is no longer able to communicate with the BSM controller, then the BSM controller will lose communication with all CSBs

Method used

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  • Detection diagnostics for loss of communication with multiple battery cell sense boards
  • Detection diagnostics for loss of communication with multiple battery cell sense boards
  • Detection diagnostics for loss of communication with multiple battery cell sense boards

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Embodiment Construction

[0046] Those skilled in the art will recognize that terms such as "above," "above," "up," "down," "top," "bottom," etc. Limitation of Scope The scope of the invention is defined by the appended claims. Furthermore, the invention is described herein in terms of functional and / or logical block components and / or various processing steps. It should be appreciated that such block components may be comprised of any number of hardware, software, and / or firmware components configured to perform the specified functions.

[0047] Referring to the drawings, wherein like reference numerals refer to like parts throughout the several views, a battery system for a hybrid vehicle is shown generally at 20 . refer to figure 1 , the battery system 20 includes a battery pack 22 having a plurality of individual battery cells 24 or modules connected together. Each battery cell 24 may include a cell sense board (CSB) 26 that is connected to the corresponding battery cell 24 and senses information...

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Abstract

The present invention discloses detection and diagnosis of loss of communication with multiple battery cell sense boards. A method of identifying a non-communicating battery CSB in a plurality of cell sense boards (CSBs) arranged in a serial chain includes sequentially reconfiguring the series chain of battery CSBs to sequentially define each of the plurality of battery CSBs as a temporary test series The last battery CSB in the chain. Using the loopback feature of the battery CSBs, communication is sequentially established with the last battery CSB of each temporary test series chain. When a communication interruption between the battery system manager controller and the last battery CSB of the current temporary test series chain is detected, the current temporary test last battery CSB of the series chain is identified as a non-communicating battery CSB.

Description

technical field [0001] The present invention generally relates to a method of identifying non-communicating battery cell sense boards among a plurality of identically configured battery cell sense boards arranged in a series chain and connected to a battery system manager controller of a hybrid vehicle. Background technique [0002] Hybrid vehicles typically include an electric motor powered by a battery pack. A battery pack includes a number of individual battery cells or modules connected together. Each battery cell may include a cell sense board (CSB) connected to the corresponding battery cell and sensing information related to its corresponding battery cell. A hybrid vehicle would then include a plurality of CSBs, one of the CSBs being associated with and / or connected to a respective one of the battery cells. Each CSB is connected to a battery system manager (BSM) controller. The BSM controller communicates with and receives information from each CSB to control the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42
CPCH01M10/4207H01M2220/20H01M10/482G01R35/00H01M10/4257H01M2010/4278G01R31/396Y02E60/10H01M10/42
Inventor V.A.诺瓦克V.施里帕西D.P.格伦A.C.鲍曼
Owner GM GLOBAL TECH OPERATIONS LLC
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